EP2422883B1 - Method for producing a high pressure nozzle - Google Patents
Method for producing a high pressure nozzle Download PDFInfo
- Publication number
- EP2422883B1 EP2422883B1 EP11188268.4A EP11188268A EP2422883B1 EP 2422883 B1 EP2422883 B1 EP 2422883B1 EP 11188268 A EP11188268 A EP 11188268A EP 2422883 B1 EP2422883 B1 EP 2422883B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- section
- longitudinal axis
- jet
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 26
- 238000001746 injection moulding Methods 0.000 claims description 24
- 239000011230 binding agent Substances 0.000 claims description 16
- 238000005245 sintering Methods 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000013067 intermediate product Substances 0.000 claims 3
- 239000002243 precursor Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 9
- 238000011144 upstream manufacturing Methods 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001914 calming effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/40—Filters located upstream of the spraying outlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
- B22F5/106—Tube or ring forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49428—Gas and water specific plumbing component making
- Y10T29/49432—Nozzle making
- Y10T29/49433—Sprayer
Definitions
- a high-pressure nozzle for descaling steel products which has a jet funnel within a feed channel to an outlet opening.
- the jet straightener is constructed as a star-like component in cross-section and has a cylindrical central part, from which radially flow guide surfaces extend.
- the cylindrical central part is extended both in the upstream direction and in the downstream direction in the form of a conical tip.
- a filter is arranged, which is formed from a pipe section with a spherical cap-shaped end and is provided with radial cuts for the entry of liquid. The radial cuts extend into the spherical section cap of the filter.
- a gradual taper of the flow channel is provided, which decreases as the taper angle decreases
- Exit chamber extends in a mouthpiece.
- the mouthpiece has the outlet chamber and the outlet opening adjoining the outlet chamber. Due to the very high liquid pressures with which high-pressure nozzles are operated for descaling steel products and which can be several 100 bar to 600 bar, a low flow resistance is crucial because pressure losses within the high-pressure nozzle either to a lower removal or to the requirement of a higher pressure Feed the supply line. In addition, the shape of the flat jet generated is crucial, which should have the smallest possible width to achieve the best possible removal effect. Finally, the high-pressure nozzle is exposed to considerable mechanical loads, since, for example, pressure surges in the supply line can lead to collapse of the filter of the high-pressure nozzle.
- the patent US 4,848,672 describes a high-pressure nozzle for descaling steel products, in which a nozzle tip can be made of sintered cemented carbide.
- the nozzle mouthpiece is surrounded at its radially outer periphery by a nozzle housing.
- the high-pressure nozzle has a filter and a jet funnel upstream of the nozzle tip.
- the filter and the jet straightener are designed as separate components, the filter component being connected by means of a screw connection to a tubular nozzle housing into which the jet straightener is then also inserted concentrically.
- an improved method for producing a high-pressure nozzle is to be provided.
- the problem underlying the invention is solved by a method for producing a high-pressure nozzle for descaling steel products, in which the following steps are provided: mixing metal powder with plastic binder, Injection molding the resulting mixture into a mold Removal of the binder by chemical and / or thermal processes and Sintering the pre-product obtained after removal of the binder, the high-pressure nozzle having at least one filter and a jet director in a combined filter and jet straightener component composed of at least two separate parts, whereby the individual parts are intimately connected together by co-sintering.
- Sintered components are realized by the metal powder injection molding and it is to be expected at first that sintered components have a rather brittle character and therefore for loads with extreme pressure peaks, as they occur in the operation of Entzu mattersdüsen, are not suitable. Experiments have surprisingly shown that obtained by metal powder injection molding sintered parts with appropriate design can withstand these stresses and also offer new opportunities for flow optimization of high-pressure nozzles.
- individual parts present as precursors are assembled after removal of the binder, and then the assembled primary products are sintered.
- components can be produced in one piece, for example, a combined Strahlrichter- and filter component including filter cap, since after sintering, the assembled precursors are permanently connected to each other. This results in even more options for the simultaneous stable and aerodynamic design of high-pressure nozzles.
- a combined Strahlrichter- and filter component including filter cap since after sintering, the assembled precursors are permanently connected to each other.
- the metal powder contains at least partially hard metal powder.
- the high-pressure nozzle in particular for descaling steel products, can be provided with a jet straightener within a feed channel to an outlet opening, wherein the jet straightener has a free flow cross-section in a region directly surrounding the central longitudinal axis of the feed channel.
- the jet straightener therefore has a flow channel immediately surrounding the central longitudinal axis without internals.
- the jet straightener according to the invention has a significantly reduced flow resistance, as the flow channel immediately surrounding the central longitudinal axis of the feed channel remains free and can be used for unimpeded flow. Since the free cross-section available for the flow is considerably larger, a significant reduction of the flow resistance is achieved.
- the free flow cross section may, for example, have a radius which is about 1/5 of the inner radius of the jet director.
- the jet straightener can have flow guide surfaces which extend parallel to the central longitudinal axis of the feed channel and onto the central longitudinal axis.
- the flow guide surfaces may extend radially in the direction of the central longitudinal axis.
- planar flow guide can be realized, which have a very good alignment effect with low flow resistance.
- a taper of the feed channel Downstream of the jet director, a taper of the feed channel can be provided.
- the flow can be concentrated and the flow channel can be brought together in a short path to the cross section of the outlet chamber.
- a short taper is provided and the tapered portion of the feed channel has only about half to one third of the length of the beam director.
- the taper can be followed downstream of the jet director by a section of constant cross-section which merges into a tapered discharge chamber.
- the section of constant cross section is advantageously longer than the taper after the jet director. It has proven to be advantageous make the section of constant cross-section at least twice as long as the taper after the jet director and in particular seven times as long as the taper.
- the outlet chamber merges into the outlet opening, from which the spray jet then emerges.
- a filter Upstream of the jet straightener, a filter may be arranged, which has radially aligned with the central longitudinal axis entry slots.
- the entry slots advantageously extend parallel to the central longitudinal axis.
- the filter may have a spherical segment-shaped filter cap which has inlet openings which extend parallel to the central longitudinal axis.
- the inlet openings in the spherical segment-shaped filter cap are separated from the inlet slots of the filter, so that the spherical segment-shaped filter cap can be made very stable and in particular can withstand any pressure surges occurring in the supply lines.
- the filter cap has a circumferential collar, which ensures high mechanical strength.
- the inlet slots in the filter thus end in front of the spherical segment-shaped filter cap.
- Endbegrenzungs vom the entry slots which are on the side of the beam director, may be rounded or obliquely inwardly leading formed, the rounded Endbegrenzungs vom are formed to be convex in the direction of the central longitudinal axis.
- the respective slot bottom of the entry slots which, viewed in the direction of flow, lies on the side of the beam director, is thus arched outwardly or convexly in the direction of the central longitudinal axis.
- the slot base is inclined inwards and, in particular, has a cone-shaped jacket-shaped section, with the cone then tapering in the direction of flow.
- the flow through the inlet slots gradually in the region of the slot bottom in the direction the center longitudinal axis deflected.
- a vortex formation in the region of the slot bottom is considerably reduced and a low flow resistance and a flow oriented substantially parallel to the central longitudinal axis downstream of the jet director are achieved.
- the filter can be formed by means of a filter cap and a filter main part, wherein the filter cap and the main body are made as individual parts and then connected to each other inextricably.
- the filter cap and filter body may be made by metal powder injection molding and then sintered together.
- Metal powder injection molding can also be used to realize geometrically complicated shapes which could not be realized by mechanical machining or only with considerable effort. This includes, for example, aligned with the central longitudinal axis, convex formation of the end faces of the inlet slots of the filter. Typically, such entry slots are formed by dipping a mill or saw blade into a tubular member. This then usually results in an outwardly directed, concave configuration of the end faces, which is unfavorable in terms of flow.
- the main filter part has the jet straightener.
- the soulless beam director according to the invention and a streamlined design of the entry slots on the filter can be realized and produced in a series production.
- the jet straightener can also be designed as a separate flow channel component or be integrated into another component of the nozzle as the filter.
- the filter cap may have a circumferential collar with radially inwardly extending projections, wherein the projections engage in matching recesses of the filter body.
- the filter body may be provided with a circumferential collar having radially inwardly or outwardly extending projections, the projections then engaging mating recesses of the filter cap. Regardless of whether the circumferential collar is provided with radially extending projections on the filter cap or the main filter part, the advantages of the invention a very stable and aerodynamic design of the connection between the filter cap and filter main part can be realized.
- the filter main part may have at its, the filter cap adjacent end parallel to the central longitudinal axis extending webs, between which the recesses are formed.
- the entry slots are formed between the webs of the main filter part.
- the filter body can accordingly distributed over its circumference, a plurality of extending in the upstream direction of the fingers or webs, between which the entry slots are formed. The ends of these webs are received and fixed by the filter cap. After this permanent connection of filter main body and filter cap creates a stable component.
- Particularly advantageous filter cap and filter body can be made by means of metal injection molding and then sintered together.
- the perspective, cut view of the Fig. 1 shows a high-pressure nozzle 10 according to the invention for the descaling of steel products.
- the high-pressure nozzle 10 is installed in a tubular connection nipple 12 and secured in this tubular connection nipple 12 by means of a union nut 14.
- the high-pressure nozzle 10 itself has a combined filter and Strahlrichterbauteil 16 which is screwed into a nozzle housing 18.
- a mouthpiece 20 is inserted, which defines an outlet opening 22 at its downstream end.
- the tubular connection nipple 12 is connected to a nozzle bar, not shown, in which a filter 24 of the high-pressure nozzle 10 projects.
- the mouthpiece 20 is sealed against the nozzle housing 18 by means of a circumferential metal solder seam 28.
- the jet straightener 26 leaves open a flow channel directly surrounding a central longitudinal axis 30 of the high-pressure nozzle 10. In the area of the beam director 26, a flow channel immediately surrounding the central longitudinal axis 30 is thus present without any internals.
- the jet straightener 26 has a plurality of flow guide surfaces extending radially in the direction of the central longitudinal axis 30, which are planar and aligned parallel to the central longitudinal axis 30.
- the liquid entering the filter 24 can be aligned parallel to the central longitudinal axis 30.
- the plurality of flow guide of the jet director 26 are only attached to the outer periphery of the jet director and protrude freely in the direction of the central longitudinal axis 30 surrounding the flow channel.
- Fig. 2 In the sectional view of Fig. 2 can be seen two opposing flow control of the beam director 26 through which the cutting plane is laid.
- the filter 24 Upstream of the jet director 26, the filter 24 is arranged, which is formed from a circular cylindrical tube section with radially extending to the central longitudinal axis 30 entry slots and which is provided with a spherical segment-shaped filter cap.
- a conically tapered section 32 connects, which merges into a circular cylindrical section 34 with a constant diameter.
- the tapered section 32 is shorter than the beam straightener 26 and has about 1/3 to 1/2 of the length of the beam director 26.
- the section 34 with constant In contrast, the cross-section downstream of the tapered portion 32 is both significantly longer than the beam director 26 and significantly longer than the tapered portion 32.
- the constant cross-section 34 is about three times as long as the jet director 26 and has about seven times the length of the tapered section 32. It has been found that such a dimensioning of the lengths of jet straightener 26, the taper 32 and the section 34 with constant cross-section can set flow conditions that favor an exact formation of an exiting flat jet 36.
- the outlet chamber 38 Downstream of the constant diameter section 34 is an exit chamber 38 in the mouthpiece 20.
- the outlet chamber 38 tapers conically and ends at the outlet opening.
- the length of the exit chamber 38 is about half the length of the jet director 26 and significantly less than the length of the section 34 of constant cross section.
- the length of the outlet chamber 38 is approximately on the order of the taper 32 immediately downstream of the Strahlrichters 26th
- a free flow channel available to the flow is thus tapered in a relatively short path in two stages, namely once through the tapered section 32 immediately downstream of the jet director 26 and then also in a comparatively short way by means of the tapering exit chamber 38. It has been found that such a two-stage, respectively relatively strong constriction of the flow channel in a short way flow is cheaper than a very gradual taper over a long way.
- the available free cross-section is relatively strongly constricted by means of the section 32 in the short path, but in the course of the long section 34 with constant cross-section, the flow can calm down again, and then very evenly enter the outlet chamber 38.
- the largest free flow cross section is in the region of the filter 24 and is determined by the sum of the free cross sections of the elongate filter slots and the other filter slots in the filter cap.
- An already significantly reduced flow cross-section is present in the region of the jet director 26, wherein the free flow cross-section there results from the cross section of the total channel minus the end faces of the star-shaped flow guide surfaces.
- a ratio of the free flow cross-sectional area on the jet straightener 26 to the free flow cross-sectional area of the filter 24 is advantageously 1: 6 or greater.
- a further narrowing of the flow cross-section takes place after the jet straightener 26 on the cross section of the channel 27, which is guided with a constant cross section to the mouthpiece 12.
- a ratio of the free flow cross-sectional area in the channel 37 to the free flow cross-sectional area on the jet straightener 26 is advantageously 1: 1.23 or greater.
- a ratio of the free flow cross-sectional area in the channel 37 to the free flow cross-sectional area of the filter 24 is advantageously 1: 7.44 or greater.
- the free flow cross-sectional area in the channel 37 is, for example, 95 mm 2
- the free flow cross-sectional area on the filter 24 is for example 707 mm 2 .
- a Metalllotnaht 28 is provided between an inner edge of the nozzle housing 14 and an annular end face of the mouthpiece 12, which seals the mouthpiece 12 against the nozzle housing 14.
- FIG. 3 shows the combined Strahlrichter- and filter component 16 of the high-pressure nozzle 10 of Fig. 1 .
- the component 16 consists of a total of three individual parts which are permanently connected to each other, namely a filter cap 40, a filter main part 42, which also has the jet funnel 26, and a conduit part 44, the tapered portion 32 downstream of the Strahlrichters 26 and the section 34 having a constant cross section 34.
- the conduit part 44 is provided with an external thread 46 with which the conduit part 44 is screwed into the nozzle housing 18.
- the filter cap 40 is designed in the form of a spherical segment and has inlet openings 48 extending parallel to the central longitudinal axis 30.
- the inlet openings 48 are arranged in a star shape on the filter cap 40.
- the filter main part 42 has a plurality of webs 50 extending parallel to the central longitudinal axis 30 and spaced uniformly around their circumference. Between the webs 50 remain entry slots through which liquid can enter the filter 24.
- downstream end faces 52 of the entry slots are rounded and curved in the direction of the central longitudinal axis 30 to be convex. Liquid entering through the entry slots is thereby gradually deflected in the direction of the central longitudinal axis 30 in the area of the downstream end faces of the entry slots. As a result, a vortex formation in the region of the end faces 52 is kept low and a low flow resistance with uniform flow can be achieved.
- the filter cap 40, the main filter part 42 with the jet straightener 26 and the conduit part 44 are manufactured as individual parts by means of metal injection molding and then put together after removal of a thermoplastic binder, as individual precursors and then sintered. After sintering, the filter cap 40, the main filter part 42 and the conduit part 44 are permanently connected to each other and form the heavy-duty combined Strahlrichter- and filter component 16.
- the preparation by means of metal powder injection molding will be explained in detail.
- Fig. 4 shows in a perspective view the main filter part 42 of Fig. 3 , Dashed lines indicate details that are not recognizable in and of themselves, such as the radially directed flow guide surfaces 54 and concealed entry slots between the webs 50.
- the webs 50 are formed at their upstream end with reduced thickness so that each web 50 has a step 58, which serves as a stop when sliding the filter cap 40, as well as in the side view of Fig. 5 can be seen.
- FIG. 6 The view of Fig. 6 in the direction of the arrow VI Fig. 5 shows the radially extending in the direction of the central longitudinal axis flow guide surfaces 54 of the jet director, which leave the flow channel 56 around the central longitudinal axis 30 around.
- the flow guide surfaces 54 are only connected at their radially outer end to the inner wall of the main filter part 42 and protrude freely in the direction of the central longitudinal axis.
- the flow guide surfaces 54 are comparative leave the same large cross-section and cause only a small flow resistance despite very good alignment effect. All, projecting into the flow edges of the flow guide 54 are rounded.
- the presentation of the Fig. 7 shows a view of the filter main part 42 in the direction of arrow VII of Fig. 5 , Good to see the free ends of the webs 50, each with a paragraph 58.
- the webs 50 leave between them entry slots free to extend radially in the direction of the central longitudinal axis and can enter through the liquid in the interior of the filter body 42.
- the number of slots between the webs 50 is greater than the number of flow baffles.
- there are eight flow guide surfaces 54 and fourteen inlet slots which are distributed uniformly over the circumference of the main filter part 42.
- the sectional view of the filter main part 42 in FIG Fig. 8 on the cutting plane VIII-VIII of the Fig. 5 allows the rounded formation of the end faces 52 of the entry slots between the webs 50 of the filter 24 to recognize.
- the end faces 52 of the entry slots are curved and, in particular, the sectional view of Fig. 11 on the cutting plane XI-XI the Fig. 10 can be seen, viewed in the direction of the central longitudinal axis 30 convex.
- the transitions between the end faces 52 and the lateral boundaries of the webs 50, which define the entry slots, rounded, as well especially in the enlarged detail of the Fig. 9 can be seen.
- the liquid entering through the entry slots is thereby deflected in the direction of the central longitudinal axis 30 with little vortex formation and thus low flow losses.
- the free edges of the flow guide surfaces 54 of the Strahlrichters 26, such as Fig. 11 and also 6 and 7 can be seen.
- the presentation of the Fig. 12 shows the filter cap 40 in a side view.
- the filter cap 40 is substantially spherical segment-shaped and has star-shaped around the central longitudinal axis 30 arranged inlet openings 48, which extend parallel to the central longitudinal axis 30. Liquid can enter through the inlet openings 48 into the interior of the filter and is already aligned with the inlet approximately parallel to the central longitudinal axis 30.
- the filter cap 40 has an indexing slot 60, which facilitates the correct angle placing the filter cap 40 on the main filter part 42.
- the presentation of the Fig. 13 shows a view of the filter cap 40 along the arrow XIII of Fig. 12 ,
- the filter cap 40 has a circumferential collar 62 with a plurality of projections 64 extending radially in the direction of the central longitudinal axis 30.
- Recesses 66 which are provided for receiving the free ends of the webs 50 of the main filter part 42, are respectively formed between the projections 64.
- the thickness of the webs 50 corresponds to the wall thickness of the filter cap 40 and thus the radial dimension of the projections 64 plus the thickness of the collar 62, so the length of the outer wall of the filter cap 40 to the inner wall in the region of a projection 64.
- the free ends of the webs 50 are reduced in thickness.
- the filter cap 40 When placing the filter cap 40 therefore engage the free ends 59 in the recesses 66 and the free ends 59 are matched to the dimensions of the recesses 66, that an inner wall of the webs 50 in the pushed state of the cap 40 in alignment with the inner wall of the filter cap 40th runs.
- the filter cap 40 is pushed so far until the peripheral collar 62 rests with its lower edge on the shoulder 58 of the filter body 42.
- both the filter cap 40 and the main filter part 42 are produced by metal injection molding and sintered after debindering in the assembled state.
- the filter cap 40 and the main filter part 42 connect inextricably and also after the plugging still existing narrow joints are filled, so that after sintering a one-piece and substantially seamless component is obtained.
- FIG. 14 represents a sectional view on the cutting plane XIV-XIV of Fig. 13 and Fig. 15 represents a sectional view on the section plane XV-XV of Fig. 13 represents.
- FIGS. 14 and 15 It can be seen that the wall thickness of the filter cap 40 gradually decreases from the collar 62 in the direction of its vertex, ie the intersection of the central longitudinal axis 30 with the wall of the filter cap 40.
- the length of the entry slots 48 parallel to the central longitudinal axis 30 are kept as short as possible, which benefits a low flow resistance, and at the same time the filter cap 40 can be made extremely stable, so that it withstands strong pressure surges during operation of the high-pressure nozzle according to the invention.
- metal powder is mixed with a thermoplastic plastic binder.
- a metal powder for example, hard metal powder can be used.
- the mixture thus obtained is also referred to as a feedstock.
- a second step 72 the mixture thus obtained is then shaped by means of injection molding.
- the precursor obtained after the injection molding is called a green component or green component.
- a subsequent step 74 is referred to as debinding, and in the course of this step 74 the thermoplastic binder is removed from the precursor by suitable processes. These can be, for example, thermal or chemical processes. After debindering, there is a precursor having a comparatively porous structure in which there are interstices between the individual metal powder particles which were originally filled by the thermoplastic binder.
- the precursor obtained after debindering is also referred to as Braunling or brown component.
- the filter cap 40, the main body part 42 with the jet straightener 26 and the pipe part 44 are separately manufactured by metal powder injection molding and assembled after debindering.
- the conduit member 44 may also be manufactured as a conventional rotary member and then assembled with the debindered precursors, namely the filter cap 40 and the filter body 42.
- the assembled state of the precursors they are sintered in a step 78.
- the sintering is carried out by a heat treatment process. After sintering, the material properties of the resulting end product are comparable to those of solid materials.
- the assembled items, especially the filter cap 40, the filter body 42 and the lead portion 44, are inextricably linked by the step 78 of sintering and any existing joints between these items disappear. Outer wall and inner wall of the combined Strahlrichter- and filter component 16 thereby extend smoothly and without noticeable joints. This benefits a low flow resistance.
- the components sintered together that is to say the combined jet straightener and filter component 16 can still be post-processed or surface-treated.
- the accessible surfaces can be polished in order to reduce the flow resistance even further.
- the combined Strahlrichter- and filter component 16 produced by metal powder injection molding can be designed aerodynamic and high-strength at the same time.
- the use of metal powder injection molding thereby allows surprising improvements to conventional high-pressure nozzles.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Nozzles (AREA)
- Formation And Processing Of Food Products (AREA)
- Powder Metallurgy (AREA)
- Filtering Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Fuel-Injection Apparatus (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Aus der europäischen Patentschrift
Aus der Übersetzung der europäischen Patentschrift
Die Patentschrift
Mit der Erfindung soll ein verbessertes Verfahren zum Herstellen einer Hochdruckdüse bereitgestellt werden.With the invention, an improved method for producing a high-pressure nozzle is to be provided.
Das der Erfindung zugrundeliegende Problem wird durch ein Verfahren zum Herstellen einer einer Hochdruckdüse zum Entzundern von Stahlerzeugnissen, gelöst, bei dem folgende Schritte vorgesehen sind: Mischen von Metallpulver mit Kunststoffbinder,
Spritzgießen der erhaltenen Mischung in eine Form,
Entfernen des Binders durch chemische und/oder thermische Prozesse und
Sintern des nach dem Entfernen des Binders erhaltenen Vorprodukts, wobei die Hochdruckdüse wenigstens einen Filter und einen Strahlrichter in einem kombinierten Filter- und Strahlrichterbauteil aufweist, das aus wenigstens zwei Einzelteilen zusammengesetzt ist, wobei die Einzelteile mittels Zusammensintern unlösbar miteinander verbunden werden.The problem underlying the invention is solved by a method for producing a high-pressure nozzle for descaling steel products, in which the following steps are provided: mixing metal powder with plastic binder,
Injection molding the resulting mixture into a mold
Removal of the binder by chemical and / or thermal processes and
Sintering the pre-product obtained after removal of the binder, the high-pressure nozzle having at least one filter and a jet director in a combined filter and jet straightener component composed of at least two separate parts, whereby the individual parts are intimately connected together by co-sintering.
Mittels eines solchen Metallpulverspritzgießverfahrens lassen sich auch sehr komplizierte geometrische Formen realisieren, die mittels einer konventionellen mechanischen Bearbeitung nicht oder nur mit erheblichem Aufwand hergestellt werden könnten. Das Verwenden von Spritzgussmaschinen erlaubt dabei die vergleichsweise kostengünstige Herstellung in Serienstückzahlen, kostengünstig beispielsweise im Vergleich zu Feinguss. Überraschenderweise hat sich gezeigt, dass die durch Metallpulverspritzgießen erhaltene Bauteile stabil genug sind, um den erheblichen Betriebsdrücken von mehreren 100 bar bei Hochdruckdüsen zum Entzundern von Stahlerzeugnissen standzuhalten. Über die ohnehin hohen Betriebsdrücke hinaus können in Rohrleitungen zur Versorgung von Entzunderungsdüsen Druckstöße auftreten, die ein Vielfaches der Betriebsdrücke betragen. Durch das Metallpulverspritzgießen werden Sinterbauteile realisiert und es ist zunächst zu erwarten, dass Sinterbauteile eher spröden Charakter aufweisen und daher für Belastungen mit extremen Druckspitzen, wie sie beim Betrieb von Entzunderungsdüsen auftreten, nicht geeignet sind. Versuche habe aber überraschenderweise gezeigt, dass mittels Metallpulverspritzgießen erhaltene Sinterteile bei entsprechender Auslegung diesen Belastungen standhalten können und darüber hinaus neue Möglichkeiten zur Strömungsoptimierung von Hochdruckdüsen bieten.By means of such a metal powder injection molding process, it is also possible to realize very complicated geometrical shapes which could not or only with considerable effort be produced by means of conventional mechanical processing. The use of injection molding machines allows the comparatively cost-effective production in serial numbers, cost, for example, compared to precision casting. Surprisingly, it has been found that the components obtained by metal powder injection molding are stable enough to withstand the considerable operating pressures of several 100 bar at high-pressure nozzles for descaling steel products. In addition to the already high operating pressures, pressure surges can occur in pipelines for the supply of descaling nozzles, which amounts to a multiple of the operating pressures. Sintered components are realized by the metal powder injection molding and it is to be expected at first that sintered components have a rather brittle character and therefore for loads with extreme pressure peaks, as they occur in the operation of Entzunderungsdüsen, are not suitable. Experiments have surprisingly shown that obtained by metal powder injection molding sintered parts with appropriate design can withstand these stresses and also offer new opportunities for flow optimization of high-pressure nozzles.
Erfindungsgemäß werden als Vorprodukte vorliegende Einzelteile nach dem Entfernen des Binders zusammengebaut und dann werden die zusammengebauten Vorprodukte gesintert.According to the invention, individual parts present as precursors are assembled after removal of the binder, and then the assembled primary products are sintered.
Auf diese Weise können Bauteile einstückig hergestellt werden, beispielsweise ein kombiniertes Strahlrichter- und Filterbauteil einschließlich Filterkappe, da nach dem Sintern die zusammengebauten Vorprodukte unlösbar miteinander verbunden sind. Dadurch ergeben sich noch weitere Möglichkeiten zur gleichzeitig stabilen und strömungsgünstigen Gestaltung von Hochdruckdüsen. Nach dem Entfernen des Binders liegt ein Vorprodukt mit einer vergleichsweise fragilen Struktur vor, da das Metallpulver nach Entfernen des Binders eine poröse Struktur ausbildet. Erst während des Sinterns wird das Vorprodukt verdichtet und ist danach mechanisch hoch belastbar.In this way, components can be produced in one piece, for example, a combined Strahlrichter- and filter component including filter cap, since after sintering, the assembled precursors are permanently connected to each other. This results in even more options for the simultaneous stable and aerodynamic design of high-pressure nozzles. After removal of the binder there is a precursor with a comparatively fragile structure, since the metal powder forms a porous structure after removal of the binder. Only during sintering is the precursor compacted and thereafter mechanically highly loadable.
In Weiterbildung der Erfindung enthält das Metallpulver wenigstens teilweise Hartmetallpulver.In a further development of the invention, the metal powder contains at least partially hard metal powder.
Überraschenderweise hat sich gezeigt, dass sogar Hartmetallteile mittels Metallpulverspritzguss hergestellt werden können. Dies ist speziell für die Herstellung von Mundstücken von Hochdruckentzunderungsdüsen von Vorteil. Auch im Mundstückbereich und speziell im Bereich der Austrittskammer und Austrittsöffnung lassen sich dadurch auch komplizierte geometrische Formen realisieren, die durch mechanische Bearbeitung nicht oder nicht mit vertretbarem Aufwand realisiert werden können. Nach dem Sintern des Vorprodukts aus Hartmetallpulver erhält man ein Hartmetallbauteil, das sich hervorragend für den Einsatz als Mundstück einer Hochdruckentzunderungsdüse eignet und insbesondere eine hohe Standzeit aufweist.Surprisingly, it has been found that even hard metal parts can be produced by means of metal powder injection molding. This is especially advantageous for the manufacture of mouthpieces of high pressure descaling nozzles. Even in the mouthpiece area and especially in the area of the outlet chamber and outlet opening, complicated geometrical shapes can thus be realized which can not be realized by mechanical processing or can not be realized with reasonable effort. After sintering of the precursor of hard metal powder to obtain a hard metal component, which is ideal for use as a mouthpiece of a Hochdruckentzunderungsdüse and in particular has a long service life.
Die Hochdruckdüse, insbesondere zum Entzundern von Stahlerzeugnissen, kann mit einem Strahlrichter innerhalb einer Zuführkanals zu einer Austrittsöffnung versehen sein, bei der der Strahlrichter in einem die Mittellängsachse des Zuführkanals unmittelbar umgebenden Bereich einen freien Strömungsquerschnitt aufweist.The high-pressure nozzle, in particular for descaling steel products, can be provided with a jet straightener within a feed channel to an outlet opening, wherein the jet straightener has a free flow cross-section in a region directly surrounding the central longitudinal axis of the feed channel.
Auf diese Weise ist ein sogenannter seelenloser Strahlrichter realisiert, der sich einerseits durch einen geringen Strömungswiderstand und andererseits durch eine sehr gute Ausrichtungswirkung auszeichnet. Der Strahlrichter weist also einen die Mittelängsachse unmittelbar umgebenden Strömungskanal ohne Einbauten auf. Gegenüber konventionellen Strahlrichtern, die ein mittiges zylindrisches Bauteil aufweisen, von dem aus Strömungsleitflächen radial ausgehen, weist der erfindungsgemäße Strahlrichter einen deutlich verringerten Strömungswiderstand auf, da der die Mittellängsachse des Zuführkanals unmittelbar umgebende Strömungskanal frei bleibt und für das ungehinderte Durchströmen genutzt werden kann. Da der für die Strömung zur Verfügung stehende freie Querschnitt erheblich größer ist, wird eine deutliche Verringerung des Strömungswiderstandes erzielt. Der freie Strömungsquerschnitt kann beispielsweise einen Radius aufweisen, der etwa 1/5 des Innenradius des Strahlrichter beträgt.In this way, a so-called soulless beam judge is realized, which is characterized on the one hand by a low flow resistance and on the other hand by a very good alignment effect. The jet straightener therefore has a flow channel immediately surrounding the central longitudinal axis without internals. Compared to conventional jet straighteners, which have a central cylindrical component, from which radially outward flow guide, the jet straightener according to the invention has a significantly reduced flow resistance, as the flow channel immediately surrounding the central longitudinal axis of the feed channel remains free and can be used for unimpeded flow. Since the free cross-section available for the flow is considerably larger, a significant reduction of the flow resistance is achieved. The free flow cross section may, for example, have a radius which is about 1/5 of the inner radius of the jet director.
Der Strahlrichter kann Strömungsleitflächen aufweisen, die sich parallel zur Mittellängsachse des Zuführkanals und auf die Mittellängsachse zu erstrecken.The jet straightener can have flow guide surfaces which extend parallel to the central longitudinal axis of the feed channel and onto the central longitudinal axis.
Mittels solcher parallel zur Mittellängsachse des Zuführkanals ausgerichteter Strömungsleitflächen lässt sich eine gute Dichtwirkung des Strahlrichters erzielen und eine Strömung, die den Strahlrichter passiert hat, ist stromabwärts des Strahlrichters im Wesentlichen vollständig parallel zur Mittellängsachse ausgerichtet.By means of such parallel to the central longitudinal axis of the feed channel aligned flow guide can be achieved a good sealing effect of the jet director and a flow that has passed the jet director is downstream of the beam director substantially completely aligned parallel to the central longitudinal axis.
Die Strömungsleitflächen können sich radial in Richtung auf die Mittellängsachse zu erstrecken.The flow guide surfaces may extend radially in the direction of the central longitudinal axis.
Auf diese Weise können ebene Strömungsleitflächen realisiert werden, die eine sehr gute Ausrichtungswirkung bei geringem Strömungswiderstand aufweisen.In this way, planar flow guide can be realized, which have a very good alignment effect with low flow resistance.
Stromabwärts des Strahlrichters kann eine Verjüngung des Zuführkanals vorgesehen sein.Downstream of the jet director, a taper of the feed channel can be provided.
Mittels einer solchen Verjüngung kann die Strömung konzentriert werden und auf kurzem Weg kann der Strömungskanal auf den Querschnitt der Austrittskammer zusammengeführt werden. Erfindungsgemäß ist dabei eine kurze Verjüngung vorgesehen und der sich verjüngende Abschnitt des Zuführkanals weist nur etwa die Hälfte bis ein Drittel der Länge des Strahlrichters auf.By means of such a taper, the flow can be concentrated and the flow channel can be brought together in a short path to the cross section of the outlet chamber. According to the invention, a short taper is provided and the tapered portion of the feed channel has only about half to one third of the length of the beam director.
An die Verjüngung kann sich stromabwärts des Strahlrichters ein Abschnitt mit konstantem Querschnitt anschließen, der in eine sich verjüngende Austrittskammer übergeht.The taper can be followed downstream of the jet director by a section of constant cross-section which merges into a tapered discharge chamber.
Mittels eines solchen Abschnitts mit konstantem Querschnitt kann eine Strömungsberuhigung erzielt werden, die sich in einer sehr guten Strahlqualität bei geringem Strömungswiderstand auswirkt. Der Abschnitt mit konstantem Querschnitt ist vorteilhafterweise länger als die Verjüngung nach dem Strahlrichter. Es hat sich als vorteilhaft erwiesen, den Abschnitt mit konstantem Querschnitt mindestens doppelt so lang wie die Verjüngung nach dem Strahlrichter und insbesondere sieben Mal so lang wie die Verjüngung auszubilden. Die Austrittskammer geht in die Austrittsöffnung über, aus der dann der Sprühstrahl austritt.By means of such a section with a constant cross-section, a flow calming can be achieved, which results in a very good beam quality with low flow resistance. The section of constant cross section is advantageously longer than the taper after the jet director. It has proven to be advantageous make the section of constant cross-section at least twice as long as the taper after the jet director and in particular seven times as long as the taper. The outlet chamber merges into the outlet opening, from which the spray jet then emerges.
Stromaufwärts des Strahlrichters kann ein Filter angeordnet sein, der radial zur Mittellängsachse ausgerichtete Eintrittsschlitze aufweist. Die Eintrittsschlitze erstrecken sich vorteilhafterweise parallel zur Mittellängsachse. Der Filter kann eine kugelabschnittsförmige Filterkappe aufweisen, die Eintrittsöffnungen aufweist, die sich parallel zur Mittellängsachse erstrecken.Upstream of the jet straightener, a filter may be arranged, which has radially aligned with the central longitudinal axis entry slots. The entry slots advantageously extend parallel to the central longitudinal axis. The filter may have a spherical segment-shaped filter cap which has inlet openings which extend parallel to the central longitudinal axis.
Die Eintrittsöffnungen in der kugelabschnittsförmigen Filterkappe sind dabei getrennt von den Eintrittsschlitzen des Filters, so dass die kugelabschnittsförmige Filterkappe sehr stabil ausgeführt werden kann und insbesondere eventuell in den Zuführleitungen auftretenden Druckstößen standhalten kann. Beispielsweise weist die Filterkappe einen umlaufenden Bund auf, der für eine hohe mechanische Festigkeit sorgt. Die Eintrittsschlitze im Filter enden somit vor der kugelabschnittsförmigen Filterkappe.The inlet openings in the spherical segment-shaped filter cap are separated from the inlet slots of the filter, so that the spherical segment-shaped filter cap can be made very stable and in particular can withstand any pressure surges occurring in the supply lines. For example, the filter cap has a circumferential collar, which ensures high mechanical strength. The inlet slots in the filter thus end in front of the spherical segment-shaped filter cap.
Endbegrenzungsflächen der Eintrittsschlitze, die auf der Seite des Strahlrichters liegen, können abgerundet oder schräg nach innen führend ausgebildet sein, wobei die abgerundeten Endbegrenzungsflächen in Richtung auf die Mittellängsachse zu konvex ausgebildet sind. Der jeweilige Schlitzgrund der Eintrittsschlitze, der in Strömungsrichtung gesehen auf der Seite des Strahlrichters liegt, ist somit in Richtung auf die Mittellängsachse zu nach außen gewölbt oder konvex ausgebildet. Alternativ ist der Schlitzgrund nach innen geneigt und insbesondere kegelmantelabschnittsförmig ausgebildet, wobei sich der Kegel dann in Strömungsrichtung verjüngt. Dadurch wird die Strömung durch die Eintrittsschlitze hindurch im Bereich des Schlitzgrundes allmählich in Richtung der Mittellängsachse umgelenkt. Dadurch wird eine Wirbelbildung im Bereich des Schlitzgrundes erheblich vermindert und es wird ein geringer Strömungswiderstand und eine im Wesentlichen parallel zur Mittellängsachse ausgerichtete Strömung stromabwärts des Strahlrichters erzielt.Endbegrenzungsflächen the entry slots, which are on the side of the beam director, may be rounded or obliquely inwardly leading formed, the rounded Endbegrenzungsflächen are formed to be convex in the direction of the central longitudinal axis. The respective slot bottom of the entry slots, which, viewed in the direction of flow, lies on the side of the beam director, is thus arched outwardly or convexly in the direction of the central longitudinal axis. Alternatively, the slot base is inclined inwards and, in particular, has a cone-shaped jacket-shaped section, with the cone then tapering in the direction of flow. As a result, the flow through the inlet slots gradually in the region of the slot bottom in the direction the center longitudinal axis deflected. As a result, a vortex formation in the region of the slot bottom is considerably reduced and a low flow resistance and a flow oriented substantially parallel to the central longitudinal axis downstream of the jet director are achieved.
Der Filter kann mittels einer Filterkappe und eines Filterhauptteils gebildet sein, wobei die Filterkappe und das Filterhauptteil als Einzelteile hergestellt und dann unlösbar miteinander verbunden sind.The filter can be formed by means of a filter cap and a filter main part, wherein the filter cap and the main body are made as individual parts and then connected to each other inextricably.
Auf diese Weise wird die Herstellung auch geometrisch komplizierter Formen im Bereich von Filterkappe und Filterhauptteil erleichtert. Nach dem unlösbaren Verbinden von Filterkappe und Filterhauptteil steht eine stabile und strömungsgünstige Filtereinheit zur Verfügung.In this way, the production of geometrically complicated shapes in the range of filter cap and filter body is facilitated. After the non-detachable connection of the filter cap and main filter part, a stable and streamlined filter unit is available.
Die Filterkappe und das Filterhauptteil können durch Metallpulverspritzguss hergestellt und dann zusammengesintert sein.The filter cap and filter body may be made by metal powder injection molding and then sintered together.
Durch Metallpulverspritzguss lassen sich auch geometrisch komplizierte Formen realisieren, die durch eine mechanische Bearbeitung nicht oder nur mit erheblichem Aufwand realisiert werden könnten. Hierzu zählt beispielsweise die zur Mittellängsachse ausgerichtete, konvexe Ausbildung der Stirnflächen der Eintrittsschlitze des Filters. Üblicherweise werden solche Eintrittsschlitze durch Eintauchen eines Fräsers oder eines Sägeblatts in ein rohrförmiges Bauteil ausgebildet. Dabei ergibt sich dann in der Regel eine nach außen gerichtete, konkave Ausbildung der Stirnflächen, die strömungstechnisch ungünstig ist.Metal powder injection molding can also be used to realize geometrically complicated shapes which could not be realized by mechanical machining or only with considerable effort. This includes, for example, aligned with the central longitudinal axis, convex formation of the end faces of the inlet slots of the filter. Typically, such entry slots are formed by dipping a mill or saw blade into a tubular member. This then usually results in an outwardly directed, concave configuration of the end faces, which is unfavorable in terms of flow.
Das Filterhauptteil weist den Strahlrichter auf.The main filter part has the jet straightener.
Auf diese Weise lässt sich ein strömungsgünstiges kombiniertes Strahlrichter- und Filterbauteil realisieren. Bei Herstellung dieses kombinierten Strahlrichter- und Filterbauteils mittels Metallpulverspritzgießen lassen sich der erfindungsgemäße seelenlose Strahlrichter und eine strömungsgünstige Ausbildung der Eintrittsschlitze am Filter realisieren und im Rahmen einer Serienproduktion herstellen. Alternativ kann der Strahlrichter auch als separates Strömungskanalbauteil ausgebildet sein oder in ein anderes Bauteil der Düse als den Filter integriert sein.In this way, a streamlined combined Strahlrichter- and filter component can be realized. When making this combined Strahlrichter- and filter component by means of metal powder injection molding, the soulless beam director according to the invention and a streamlined design of the entry slots on the filter can be realized and produced in a series production. Alternatively, the jet straightener can also be designed as a separate flow channel component or be integrated into another component of the nozzle as the filter.
Die Filterkappe kann einen umlaufenden Bund mit sich radial nach innen erstreckenden Vorsprüngen aufweisen, wobei die Vorsprünge in passende Ausnehmungen des Filterhauptteils eingreifen.The filter cap may have a circumferential collar with radially inwardly extending projections, wherein the projections engage in matching recesses of the filter body.
Auf diese Weise lässt sich eine sehr stabile Anbindung der Filterkappe an das Filterhauptteil realisieren, die darüber hinaus eine sehr strömungsgünstige Ausbildung erlaubt. Alternativ kann das Filterhauptteil mit einem umlaufenden Bund mit sich radial nach innen oder außen erstreckenden Vorsprüngen versehen sein, wobei die Vorsprünge dann in passende Ausnehmungen der Filterkappe eingreifen. Unabhängig davon, ob der umlaufende Bund mit sich radial erstreckenden Vorsprüngen an der Filterkappe oder dem Filterhauptteil vorgesehen ist, lassen sich die erfindungsgemäßen Vorteile einer sehr stabilen und dabei strömungsgünstigen Ausbildung der Verbindung zwischen Filterkappe und Filterhauptteil realisieren.In this way, a very stable connection of the filter cap to the filter body can be realized, which also allows a very aerodynamic training. Alternatively, the filter body may be provided with a circumferential collar having radially inwardly or outwardly extending projections, the projections then engaging mating recesses of the filter cap. Regardless of whether the circumferential collar is provided with radially extending projections on the filter cap or the main filter part, the advantages of the invention a very stable and aerodynamic design of the connection between the filter cap and filter main part can be realized.
Das Filterhauptteil kann an seinem, der Filterkappe benachbarten Ende sich parallel zur Mittellängsachse erstreckende Stege aufweisen, zwischen denen die Ausnehmungen gebildet sind. Vorteilhafterweise sind zwischen den Stegen des Filterhauptteils die Eintrittsschlitze gebildet.The filter main part may have at its, the filter cap adjacent end parallel to the central longitudinal axis extending webs, between which the recesses are formed. Advantageously, the entry slots are formed between the webs of the main filter part.
Das Filterhauptteil kann demgemäß über seinen Umfang verteilt mehrere, sich in Stromaufwärtsrichtung erstreckende Finger oder Stege auf, zwischen denen die Eintrittsschlitze gebildet sind. Die Enden dieser Stege werden durch die Filterkappe aufgenommen und fixiert. Nach dem unlösbaren Verbinden von Filterhauptteil und Filterkappe entsteht dadurch ein stabiles Bauteil. Besonders vorteilhaft können Filterkappe und Filterhauptteil mittels Metallpulverspritzguss hergestellt und dann zusammengesintert werden.The filter body can accordingly distributed over its circumference, a plurality of extending in the upstream direction of the fingers or webs, between which the entry slots are formed. The ends of these webs are received and fixed by the filter cap. After this permanent connection of filter main body and filter cap creates a stable component. Particularly advantageous filter cap and filter body can be made by means of metal injection molding and then sintered together.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung einer bevorzugten Ausführungsform der Erfindung. In den Zeichnungen zeigen:
- Fig. 1
- eine perspektivische, aufgeschnittene Ansicht einer erfindungsgemäßen Hochdruckdüse,
- Fig. 2
- eine Schnittansicht der Hochdruckdüse der
Fig. 1 , - Fig. 3
- eine Schnittansicht eines kombinierten Strahlrichter- und Filterbauteils der Hochdruckdüse der
Fig. 1 , - Fig. 4
- eine perspektivische Ansicht eines Filterhauptteils mit integriertem Strahlrichter des Bauteils der
Fig. 3 , - Fig. 5
- eine Seitenansicht des Filterhauptteils der
Fig. 4 , - Fig. 6
- eine Ansicht des Filterhauptteils der
Fig. 5 in Richtung des Pfeiles VI, - Fig. 7
- eine Ansicht des Filterhauptteils der
Fig. 5 entlang dem Pfeil VII, - Fig. 8
- eine Ansicht des Filterhauptteils der
Fig. 5 auf die Schnittebene VIII-VIII, - Fig. 9
- eine vergrößerte Darstellung einer Einzelheit des Filterhauptteils der
Fig. 8 , - Fig. 10
- eine weitere Seitenansicht des Filterhauptteils der
Fig. 4 , - Fig. 11
- eine Schnittansicht des Filterhauptteils der
Fig. 10 auf die Schnittebene XI-XI, - Fig. 12
- eine Seitenansicht einer Filterkappe des Bauteils der
Fig. 3 , - Fig. 13
- eine Ansicht der Filterkappe der
Fig. 12 in Richtung des Pfeiles XIII, - Fig. 14
- eine Schnittansicht auf die Schnittebene XIV-XIV der
Fig. 13 , - Fig. 15
- eine Schnittansicht auf die Schnittebene XV-XV der
Fig. 13 und - Fig. 16
- eine schematische Darstellung zur Verdeutlichung des erfindungsgemäßen Verfahrens.
- Fig. 1
- a perspective, cutaway view of a high-pressure nozzle according to the invention,
- Fig. 2
- a sectional view of the high pressure nozzle of
Fig. 1 . - Fig. 3
- a sectional view of a combined Strahlrichter- and filter component of the high pressure nozzle of
Fig. 1 . - Fig. 4
- a perspective view of a filter main part with integrated beam funnel of the component of
Fig. 3 . - Fig. 5
- a side view of the main filter part of
Fig. 4 . - Fig. 6
- a view of the filter body of the
Fig. 5 in the direction of the arrow VI, - Fig. 7
- a view of the filter body of the
Fig. 5 along the arrow VII, - Fig. 8
- a view of the filter body of the
Fig. 5 on the cutting plane VIII-VIII, - Fig. 9
- an enlarged view of a detail of the main filter part of
Fig. 8 . - Fig. 10
- another side view of the main filter part of
Fig. 4 . - Fig. 11
- a sectional view of the filter main part of
Fig. 10 on the cutting plane XI-XI, - Fig. 12
- a side view of a filter cap of the component of
Fig. 3 . - Fig. 13
- a view of the filter cap the
Fig. 12 in the direction of the arrow XIII, - Fig. 14
- a sectional view on the cutting plane XIV-XIV of
Fig. 13 . - Fig. 15
- a sectional view on the section plane XV-XV of
Fig. 13 and - Fig. 16
- a schematic representation to illustrate the method according to the invention.
Die perspektivische, geschnittene Ansicht der
Anhand der
In der Schnittansicht der
Stromabwärts des Strahlrichters 26 schließt sich ein kegelförmig verjüngender Abschnitt 32 an, der in einen kreiszylindrischen Abschnitt 34 mit konstantem Durchmesser übergeht. Der sich verjüngende Abschnitt 32 ist dabei kürzer als der Strahlrichter 26 ausgebildet und weist etwa 1/3 bis 1/2 der Länge des Strahlrichters 26 auf. Der Abschnitt 34 mit konstantem Querschnitt stromabwärts des sich verjüngenden Abschnitts 32 ist dahingegen sowohl deutlich länger als der Strahlrichter 26 als auch deutlich länger als der sich verjüngende Abschnitt 32. Bei der dargestellten Ausführungsform ist der Abschnitt 34 mit konstantem Querschnitt etwas dreimal so lang wie der Strahlrichter 26 und hat etwa die siebenfache Länge des sich verjüngenden Abschnitts 32. Es hat sich herausgestellt, dass sich durch eine solche Bemessung der Längen von Strahlrichter 26, der Verjüngung 32 und des Abschnitts 34 mit konstantem Querschnitt Strömungsverhältnisse einstellen lassen, die eine exakte Ausformung eines austretenden Flachstrahls 36 begünstigen. Stromabwärts des Abschnitts 34 mit konstantem Durchmesser schließt sich eine Austrittskammer 38 im Mundstück 20 an. Die Austrittskammer 38 verjüngt sich kegelförmig und endet an der Austrittsöffnung. Die Länge der Austrittskammer 38 ist etwa halb so groß wie die Länge des Strahlrichters 26 und deutlich geringer als die Länge des Abschnitts 34 mit konstantem Querschnitt. Die Länge der Austrittskammer 38 liegt etwa in der Größenordnung der Verjüngung 32 unmittelbar stromabwärts des Strahlrichters 26.Downstream of the
Bei der erfindungsgemäßen Hochdruckdüse wird ein freier, der Strömung zur Verfügung stehender Strömungskanal somit zweistufig auf relativ kurzem Weg verjüngt, nämlich einmal durch den sich verjüngenden Abschnitt 32 unmittelbar stromabwärts des Strahlrichters 26 und dann, ebenfalls auf vergleichsweise kurzem Weg mittels der sich verjüngenden Austrittskammer 38. Es hat sich herausgestellt, dass eine solche zweistufige, jeweils relativ starke Einschnürung des Strömungskanals auf kurzem Weg strömungstechnisch günstiger ist als eine sehr allmähliche Verjüngung über einen großen Weg. Speziell wird der zur Verfügung stehende freie Querschnitt mittels des Abschnitts 32 auf kurzem Weg relativ stark eingeschnürt, im Verlauf des langen Abschnitts 34 mit konstanten Querschnitt kann sich die Strömung aber wieder beruhigen, um dann sehr gleichmäßig in die Austrittskammer 38 einzutreten.In the high-pressure nozzle according to the invention, a free flow channel available to the flow is thus tapered in a relatively short path in two stages, namely once through the tapered
Der größte freie Strömungsquerschnitt liegt im Bereich des Filters 24 vor und wird durch die Summe der freien Querschnitte der länglichen Filterschlitze sowie der weiteren Filterschlitze in der Filterkappe bestimmt. Ein bereits deutlich verringerter Strömungsquerschnitt liegt im Bereich des Strahlrichters 26 vor, wobei sich der freie Strömungsquerschnitt dort aus dem Querschnitt des Gesamtkanals abzüglich der Stirnflächen der sternförmig angeordneten Strömungsleitflächen ergibt. Ein Verhältnis der freien Strömungsquerschnittsfläche am Strahlrichter 26 zu der freien Strömungsquerschnittsfläche des Filters 24 liegt vorteilhafterweise bei 1:6 oder größer.The largest free flow cross section is in the region of the
Eine weitere Einengung des Strömungsquerschnitts erfolgt nach dem Strahlrichter 26 auf den Querschnitt des Kanals 27, der mit konstantem Querschnitt bis vor das Mundstück 12 geführt ist. Ein Verhältnis der freien Strömungsquerschnittsfläche im Kanal 37 zur freien Strömungsquerschnittsfläche am Strahlrichter 26 liegt vorteilhafterweise bei 1:1,23 oder größer.A further narrowing of the flow cross-section takes place after the
Ein Verhältnis der freien Strömungsquerschnittsfläche im Kanal 37 zur freien Strömungsquerschnittsfläche des Filters 24 liegt vorteilhafterweise bei 1 :7,44 oder größer.A ratio of the free flow cross-sectional area in the channel 37 to the free flow cross-sectional area of the
Die freie Strömungsquerschnittsfläche im Kanal 37 beträgt beispielsweise 95 mm2, die freie Strömungsquerschnittsfläche im Strahlrichter 26 betrifft beispielsweise 117 mm2 und die freie Strömungsquerschnittsfläche am Filter 24 beträgt beispielsweise 707 mm2.The free flow cross-sectional area in the channel 37 is, for example, 95 mm 2 , the free flow cross-sectional area in the
Am stromaufwärtsgelegenen Ende des Mundstücks 12 ist zwischen einer Innenrand des Düsengehäuses 14 und einer ringförmigen Stirnfläche des Mundstücks 12 eine Metalllotnaht 28 vorgesehen, die das Mundstück 12 gegen das Düsengehäuse 14 abdichtet.At the upstream end of the
Die Schnittansicht der
Die Filterkappe 40 ist kugelabschnittsförmig ausgebildet und weist sich parallel zur Mittellängsachse 30 erstreckende Eintrittsöffnungen 48 auf. Die Eintrittsöffnungen 48 sind sternförmig auf der Filterkappe 40 angeordnet. Das Filterhauptteil 42 weist mehrere, sich parallel zur Mittellängsachse 30 erstreckende Stege 50 auf, die gleichmäßig voneinander beabstandet um seinen Umfang herum angeordnet sind. Zwischen den Stegen 50 verbleiben Eintrittsschlitze, durch die Flüssigkeit in den Filter 24 eintreten kann.The
Anhand der
Gut zu erkennen ist in
Die Filterkappe 40, das Filterhauptteil 42 mit dem Strahlrichter 26 und das Leitungsteil 44 werden als Einzelteile mittels Metallpulverspritzguss hergestellt und dann nach dem Entfernen eines thermoplastischen Binders, als einzelne Vorprodukte zusammengesteckt und dann gesintert. Nach dem Sintern sind die Filterkappe 40, das Filterhauptteil 42 und das Leitungsteil 44 unlösbar miteinander verbunden und bilden das hochbelastbare kombinierte Strahlrichter- und Filterbauteil 16. Die Herstellung mittels Metallpulverspritzgießen wird nachfolgend noch eingehend erläutert.The
Die Darstellung der
Die Ansicht der
Die Darstellung der
Die Schnittansicht des Filterhauptteils 42 in
Die Stirnflächen 52 der Eintrittsschlitze sind gekrümmt ausgebildet und, wie vor allem der Schnittansicht der
Die Darstellung der
Die Darstellung der
Vorteilhafterweise werden sowohl die Filterkappe 40 als auch das Filterhauptteil 42 durch Metallpulverspritzguss hergestellt und nach dem Entbindern in zusammengesteckten Zustand gesintert. Durch das Sintern verbinden sich die Filterkappe 40 und das Filterhauptteil 42 unlösbar und auch die nach dem Zusammenstecken noch vorhandenen schmalen Fugen werden aufgefüllt, so dass nach dem Sintern ein einstückiges und im Wesentlichen fugenloses Bauteil erhalten wird.Advantageously, both the
Anhand der schematischen Darstellung der
In einem ersten Verfahrensschritt 70 wird Metallpulver mit einem thermoplastischen Kunststoffbinder vermischt. Als Metallpulver kann beispielsweise auch Hartmetallpulver verwendet werden. Die so erhaltene Mischung wird auch als Feedstock bezeichnet.In a
In einem zweiten Schritt 72 wird die so erhaltene Mischung dann mittels Spritzgießen in Form gebracht. Verwendet werden können im Wesentlichen herkömmliche Spritzgießmaschinen, da die Mischung ja aufgrund des thermoplastischen Kunststoffbinders kunststoffähnliche Eigenschaften aufweist und für das Spritzgießen geeignet ist. Das nach dem Spritzgießen erhaltene Vorprodukt wird als Grünling oder green component bezeichnet.In a
Ein darauffolgender Schritt 74 wird als Entbindern bezeichnet und im Verlauf dieses Schritts 74 wird der thermoplastische Kunststoffbinder durch geeignete Prozesse aus dem Vorprodukt entfernt. Dies können beispielsweise thermische oder chemische Prozesse sein. Nach dem Entbindern liegt ein Vorprodukt mit einer vergleichsweise porösen Struktur vor, in dem zwischen den einzelnen Metallpulverteilchen Zwischenräume vorhanden sind, die ursprünglich durch den thermoplastischen Kunststoffbinder ausgefüllt waren. Das nach dem Entbindern erhaltene Vorprodukt wird auch als Bräunling oder brown component bezeichnet.A
Nach dem Entbindern können Einzelteile in einem Schritt 76 zusammengebaut werden. Wie beschrieben wurde, werden die Filterkappe 40, das Filterhauptteil 42 mit dem Strahlrichter 26 und das Leitungsteil 44 getrennt mittels Metallpulverspritzgießen hergestellt und nach dem Entbindern zusammengesetzt. Das Leitungsteil 44 kann auch als konventionelles Drehteil hergestellt werden und dann mit den entbinderten Vorprodukten, nämlich der Filterkappe 40 und dem Filterhauptteil 42 zusammengesetzt werden.After debindering, individual parts may be assembled in a
Im zusammengebauten Zustand der Vorprodukte werden diese in einem Schritt 78 gesintert. Das Sintern erfolgt durch einen Wärmebehandlungsprozess. Nach dem Sintern sind die Materialeigenschaften des entstandenen Endproduktes vergleichbar mit denen massiver Materialien. Die zusammengebauten Einzelteile, speziell die Filterkappe 40, das Filterhauptteil 42 und das Zuleitungsteil 44, werden durch den Schritt 78 des Sinterns unlösbar miteinander verbunden und eventuell vorhandene Trennfugen zwischen diesen Einzelteilen verschwinden. Außenwandung und Innenwandung des kombinierten Strahlrichter- und Filterbauteils 16 verlaufen dadurch glattflächig und ohne spürbare Trennfugen. Dies kommt einem geringen Strömungswiderstand zugute.In the assembled state of the precursors they are sintered in a
In einem abschließenden Schritt 80 können die zusammengesinterten Bauteile, also das kombinierte Strahlrichter- und Filterbauteil 16 noch nachbearbeitet oder oberflächenbehandelt werden. Beispielsweise können die zugänglichen Oberflächen strichpoliert werden, um den Strömungswiderstand noch weiter herabzusetzen.In a concluding
Das mittels Metallpulverspritzgießen hergestellte kombinierte Strahlrichter- und Filterbauteil 16 kann strömungsgünstig und gleichzeitig hochfest gestaltet werden. Der Einsatz des Metallpulverspritzgießens ermöglicht dadurch überraschende Verbesserungen an konventionellen Hochdruckdüsen.The combined Strahlrichter- and
Claims (3)
- A method for manufacturing a high pressure nozzle for descaling steel products, characterized by the following steps:- mixing metal powder with plastic binder,- injection moulding of the obtained mixture into a mould,- removing the binder by chemical and/or thermal processes, and- sintering the intermediate product obtained after binder removal,wherein the high pressure nozzle has at least one filter (24) and a jet director (26) forming a filter and jet director component (16), which is composed of at least two individual components which are permanently interconnected by sintering together.
- The method according to claim 1, characterized by assembling of individual components in the form of intermediate products following binder removal and sintering of the assembled intermediate products.
- The method according to claim 1 or 2, characterized in that the metal powder at least partly contains hard metal powder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11188268T PL2422883T3 (en) | 2007-05-15 | 2008-05-15 | Method for producing a high pressure nozzle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007024247A DE102007024247B3 (en) | 2007-05-15 | 2007-05-15 | High pressure nozzle and method of making a high pressure nozzle |
EP08008919A EP1992415B1 (en) | 2007-05-15 | 2008-05-15 | High pressure nozzle and method for producing a high pressure nozzle |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08008919A Division EP1992415B1 (en) | 2007-05-15 | 2008-05-15 | High pressure nozzle and method for producing a high pressure nozzle |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2422883A2 EP2422883A2 (en) | 2012-02-29 |
EP2422883A3 EP2422883A3 (en) | 2013-04-24 |
EP2422883B1 true EP2422883B1 (en) | 2014-03-19 |
Family
ID=39650949
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08008919A Not-in-force EP1992415B1 (en) | 2007-05-15 | 2008-05-15 | High pressure nozzle and method for producing a high pressure nozzle |
EP11188268.4A Active EP2422883B1 (en) | 2007-05-15 | 2008-05-15 | Method for producing a high pressure nozzle |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08008919A Not-in-force EP1992415B1 (en) | 2007-05-15 | 2008-05-15 | High pressure nozzle and method for producing a high pressure nozzle |
Country Status (10)
Country | Link |
---|---|
US (2) | US7841548B2 (en) |
EP (2) | EP1992415B1 (en) |
JP (2) | JP2008285755A (en) |
KR (1) | KR101355984B1 (en) |
CN (1) | CN101306409B (en) |
AT (1) | ATE537910T1 (en) |
DE (1) | DE102007024247B3 (en) |
ES (2) | ES2378001T3 (en) |
PL (1) | PL2422883T3 (en) |
RU (1) | RU2483810C2 (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007024247B3 (en) * | 2007-05-15 | 2008-11-06 | Lechler Gmbh | High pressure nozzle and method of making a high pressure nozzle |
DE102011076443B4 (en) | 2011-05-25 | 2013-01-17 | Lechler Gmbh | Check valve for spray nozzle and nozzle tube |
GB201212199D0 (en) | 2012-07-09 | 2012-08-22 | Rigdeluge Global Ltd | Nozzle apparatus |
DE102012214298A1 (en) * | 2012-08-10 | 2014-02-13 | Sms Siemag Ag | Process for the purification and / or descaling of a slab or slag by means of a scale scrubber and scale scrubber |
GB201406174D0 (en) * | 2014-04-04 | 2014-05-21 | Rigdeluge Global Ltd | Filter |
GB2526799B (en) * | 2014-06-02 | 2017-09-13 | Bamford Nigel | Fluid restriction nozzle for hand washing |
DE102014112757B4 (en) | 2014-09-04 | 2016-06-02 | Evertz Hydrotechnik Gmbh & Co. Kg | Flat fan nozzle and its use |
JP6417158B2 (en) * | 2014-09-08 | 2018-10-31 | 株式会社スギノマシン | Fluid nozzle |
DE102015214123B3 (en) * | 2015-07-27 | 2016-07-14 | Lechler Gmbh | Filter for high-pressure nozzle, high-pressure nozzle and method for producing a filter for a high-pressure nozzle |
GB201517760D0 (en) * | 2015-10-07 | 2015-11-18 | Rigdeluge Global Ltd | Nozzle apparatus |
DE102015118307A1 (en) * | 2015-10-27 | 2017-04-27 | Husqvarna Ab | Diffuser element for a sprinkler |
JP6941850B2 (en) * | 2016-08-15 | 2021-09-29 | 日本ビニロン株式会社 | Washer nozzle |
DE102016221729A1 (en) * | 2016-11-07 | 2018-05-09 | Lechler Gmbh | Filter jet straightener unit and high pressure nozzle unit |
CN109663919B (en) * | 2019-02-28 | 2023-08-15 | 韶关学院 | Multi-material part 3D printer and printing method thereof |
DE102019107292A1 (en) * | 2019-03-21 | 2020-09-24 | Ecoclean Gmbh | High pressure tool and method of making a high pressure tool |
CA3147596A1 (en) * | 2019-07-15 | 2021-01-21 | Spraying Systems Co. | Low drift, high efficiency spraying system |
CN111151390A (en) * | 2020-01-22 | 2020-05-15 | 柯敏兴 | Liquid goes out liquid shape controlling means |
JP7040846B1 (en) | 2020-08-04 | 2022-03-23 | 株式会社共立合金製作所 | Rectifying member and nozzle equipped with it |
RU2764450C1 (en) * | 2020-11-20 | 2022-01-17 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | High-pressure injector and method for manufacturing parts therefor |
MX2023012552A (en) * | 2021-05-19 | 2023-11-03 | Schunk Sintermetalltechnik Gmbh | Method for producing a printer nozzle. |
DE102022131434A1 (en) | 2022-11-28 | 2024-05-29 | Ferrofacta Gmbh | Filter, arrangement for filtering melt and machine nozzle |
Family Cites Families (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US259667A (en) * | 1882-06-20 | churchman | ||
US2391934A (en) * | 1944-02-04 | 1946-01-01 | Samuel H White | Burner tip |
NL113419C (en) | 1958-05-14 | 1900-01-01 | ||
US3062455A (en) * | 1959-11-27 | 1962-11-06 | Gpe Controls Inc | Jet pipe nozzle arrangement |
US3321140A (en) * | 1964-11-18 | 1967-05-23 | American Radiator & Standard | Fluid flow device including a parallel passageway flow straightener |
US3362648A (en) * | 1966-10-19 | 1968-01-09 | Elie P. Aghnides | Flexible water aerator |
US3486700A (en) * | 1967-12-14 | 1969-12-30 | L N B Co | Nozzle |
US3510065A (en) * | 1968-01-05 | 1970-05-05 | Steinen Mfg Co Wm | Descaling nozzle |
US3640472A (en) * | 1970-08-28 | 1972-02-08 | John O Hruby Jr | Liquid discharge nozzle having improved flow control means |
US4142456A (en) * | 1977-07-20 | 1979-03-06 | Locker Howard W | Air diffuser |
US4348170A (en) * | 1980-06-04 | 1982-09-07 | Foster Wheeler Energy Corporation | Dual register, split stream burner assembly with divider cone |
JPH0673697B2 (en) * | 1987-10-24 | 1994-09-21 | 株式会社共立合金製作所 | Nozzle for scale removal |
JPH0219546A (en) * | 1988-07-01 | 1990-01-23 | Nippon Tungsten Co Ltd | Water jet nozzle for loom |
US5169065A (en) * | 1990-06-15 | 1992-12-08 | Naylor Industrial Services | Method and apparatus for water jet cutting including improved nozzle |
DE9109175U1 (en) | 1991-07-25 | 1991-10-02 | Lechler Gmbh & Co Kg, 7012 Fellbach | High-pressure nozzle arrangement for spraying liquids, especially for descaling rolled steel |
US5304256A (en) * | 1991-12-09 | 1994-04-19 | Esab Welding Products, Inc. | Scarfing method |
SE9200670D0 (en) | 1992-03-05 | 1992-03-05 | Asea Brown Boveri | SET IN FORM INJECTION OF PREPARING MATERIALS FROM THE METAL AND / OR CERAMIC MATERIAL IN POWDER FORM |
JP2739020B2 (en) * | 1992-12-28 | 1998-04-08 | 新日本製鐵株式会社 | Nozzle with high pressure operated valve |
US5316470A (en) * | 1993-01-22 | 1994-05-31 | Robertshaw Controls Company | Jet burner construction heating apparatus utilizing the jet burner construction and methods of making the same |
US5402938A (en) * | 1993-09-17 | 1995-04-04 | Exair Corporation | Fluid amplifier with improved operating range using tapered shim |
US5854379A (en) * | 1994-03-14 | 1998-12-29 | Kabushiki Kaisha Komatsu Seisakusho | Thermal decomposition degreasing method and molded products thereof |
US5877270A (en) * | 1994-03-14 | 1999-03-02 | Kabushiki Kaisha Komatsu Seisakusho | Water solvent extraction degreasing method and molded products produced therewith |
US5627258A (en) * | 1994-03-14 | 1997-05-06 | Kabushiki Kaisha Komatsu Seisakusho | Binder for use in metal powder injection molding and debinding method by the use of the same |
EP0809556B1 (en) | 1995-02-14 | 1998-10-21 | Komatsu Ltd. | Binder for use in metal powder injection molding and debinding method by the use of the same |
JPH08296151A (en) * | 1995-04-27 | 1996-11-12 | Hokuriku Seikei Kogyo Kk | Picking nozzle for water jet loom |
US5616026A (en) * | 1995-06-07 | 1997-04-01 | Rmo, Inc. | Orthondontic appliance and method of making the same |
JP3494327B2 (en) * | 1995-10-03 | 2004-02-09 | 株式会社共立合金製作所 | Descaler nozzle |
JPH09150045A (en) * | 1995-11-30 | 1997-06-10 | Kaihou Kk | Powder mixing apparatus |
ATE302052T1 (en) | 1996-06-28 | 2005-09-15 | Larami Ltd | WATER GUN WITH BLADDER AND NOZZLE IMPROVEMENTS |
RU2108177C1 (en) * | 1996-09-30 | 1998-04-10 | Научно-исследовательская лаборатория абразивно-порошковой очистки проката от окалины РАН | Apparatus for descaling elongated cylindrical rolled piece |
DE29706863U1 (en) * | 1997-04-16 | 1997-07-10 | Lechler GmbH + Co. KG, 72555 Metzingen | Jet pipe for descaling steel sheets or the like. |
US6036481A (en) * | 1998-03-06 | 2000-03-14 | Carrier Corporation | Burner with flame retainer insert |
EP1094125B2 (en) | 1999-03-19 | 2014-09-03 | Honda Giken Kogyo Kabushiki Kaisha | Maraging steel excellent in fatigue characteristics and method for producing the same |
US6776955B1 (en) | 2000-09-05 | 2004-08-17 | Advanced Materials Technologies, Pte., Ltd. | Net shaped articles having complex internal undercut features |
US6817550B2 (en) * | 2001-07-06 | 2004-11-16 | Diamicron, Inc. | Nozzles, and components thereof and methods for making the same |
US6486700B1 (en) * | 2001-08-23 | 2002-11-26 | Sun Microsystems, Inc. | One-hot Muller C-elements and circuits using one-hot Muller C-elements |
JP2003159549A (en) * | 2001-09-12 | 2003-06-03 | Ikeuchi:Kk | Spray nozzle |
DE10211590B4 (en) * | 2002-03-15 | 2007-11-08 | J. Eberspächer GmbH & Co. KG | Atomiser nozzle, in particular for a vehicle heater |
JP4084295B2 (en) * | 2002-12-25 | 2008-04-30 | 株式会社共立合金製作所 | Descaling nozzle |
CN1305593C (en) * | 2002-12-25 | 2007-03-21 | 株式会社共立合金制作所 | Descaling nozzle |
JP4854935B2 (en) * | 2003-06-25 | 2012-01-18 | Jfeスチール株式会社 | Steel plate scale remover |
DE10361769B4 (en) | 2003-12-29 | 2014-10-23 | Robert Bosch Gmbh | Pressure transducer with one-piece housing |
CN2712470Y (en) * | 2004-06-14 | 2005-07-27 | 孙珏 | Novel high pressure spray head |
JP4297839B2 (en) * | 2004-06-23 | 2009-07-15 | オリンパス株式会社 | Metal forming assembly and manufacturing method thereof |
US7090153B2 (en) * | 2004-07-29 | 2006-08-15 | Halliburton Energy Services, Inc. | Flow conditioning system and method for fluid jetting tools |
JP4321862B2 (en) | 2004-10-29 | 2009-08-26 | 株式会社スギノマシン | Cavitation stabilizer |
CA2607864C (en) | 2005-05-13 | 2013-05-28 | Masco Corporation Of Indiana | Power sprayer |
DE102005052255B4 (en) * | 2005-11-02 | 2020-12-17 | Robert Bosch Gmbh | Fuel injector |
DE102006043821A1 (en) * | 2006-09-19 | 2008-03-27 | Robert Bosch Gmbh | Fuel injecting valve for combustion chamber of internal combustion engine, has swirl duct, injection opening and valve needle guide integrally formed with valve seat body, where swirl duct runs parallel to longitudinal axis of valve |
DE102007024247B3 (en) * | 2007-05-15 | 2008-11-06 | Lechler Gmbh | High pressure nozzle and method of making a high pressure nozzle |
-
2007
- 2007-05-15 DE DE102007024247A patent/DE102007024247B3/en active Active
-
2008
- 2008-05-07 RU RU2008117855/02A patent/RU2483810C2/en active
- 2008-05-14 US US12/152,362 patent/US7841548B2/en active Active
- 2008-05-14 KR KR1020080044696A patent/KR101355984B1/en active IP Right Grant
- 2008-05-15 EP EP08008919A patent/EP1992415B1/en not_active Not-in-force
- 2008-05-15 PL PL11188268T patent/PL2422883T3/en unknown
- 2008-05-15 EP EP11188268.4A patent/EP2422883B1/en active Active
- 2008-05-15 AT AT08008919T patent/ATE537910T1/en active
- 2008-05-15 CN CN2008100995616A patent/CN101306409B/en active Active
- 2008-05-15 JP JP2008128749A patent/JP2008285755A/en active Pending
- 2008-05-15 ES ES08008919T patent/ES2378001T3/en active Active
- 2008-05-15 ES ES11188268.4T patent/ES2463869T3/en active Active
-
2010
- 2010-11-01 US US12/925,858 patent/US20110110811A1/en not_active Abandoned
-
2012
- 2012-11-16 JP JP2012252140A patent/JP5658218B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN101306409B (en) | 2012-11-28 |
JP2008285755A (en) | 2008-11-27 |
CN101306409A (en) | 2008-11-19 |
JP2013121589A (en) | 2013-06-20 |
US7841548B2 (en) | 2010-11-30 |
US20080283635A1 (en) | 2008-11-20 |
EP2422883A2 (en) | 2012-02-29 |
JP5658218B2 (en) | 2015-01-21 |
RU2008117855A (en) | 2009-11-20 |
RU2483810C2 (en) | 2013-06-10 |
DE102007024247B3 (en) | 2008-11-06 |
ES2378001T3 (en) | 2012-04-04 |
KR20080101710A (en) | 2008-11-21 |
EP1992415A3 (en) | 2010-01-27 |
EP1992415A2 (en) | 2008-11-19 |
PL2422883T3 (en) | 2014-08-29 |
US20110110811A1 (en) | 2011-05-12 |
KR101355984B1 (en) | 2014-01-27 |
ES2463869T3 (en) | 2014-05-29 |
EP2422883A3 (en) | 2013-04-24 |
EP1992415B1 (en) | 2011-12-21 |
ATE537910T1 (en) | 2012-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2422883B1 (en) | Method for producing a high pressure nozzle | |
EP1992414B1 (en) | Spray nozzle | |
EP3318336B1 (en) | Filter jet aligner unit and high pressure nozzle unit | |
EP0431681B1 (en) | Method and extrusion tool for making a blank with internal bores | |
EP2301670B1 (en) | Shower head for a sanitary shower | |
EP2527699B1 (en) | Check valve for spray nozzle and nozzle tube | |
DE3011425A1 (en) | METHOD AND DEVICE FOR MANUFACTURING PLASTIC PIPES WITH LONG-RUNING HOLLOW CHANNELS IN THEIR WALL | |
DE102013203339A1 (en) | Two-fluid nozzle and method for spraying a liquid-gas mixture | |
EP1344477A2 (en) | Device for producing frothed milk for cappuccino | |
EP3495036A1 (en) | Mixer insert for static mixer, static mixer and method of manufacturing | |
EP2931434B1 (en) | Fan nozzle | |
EP3088087B1 (en) | Spray nozzle and method for producing non-round spray cones | |
DE102017107567A1 (en) | Multilayer die | |
EP2719284B1 (en) | Device and method for forming a strand of a pasty material | |
DE2911833A1 (en) | SPRAY HEAD ARRANGEMENT | |
EP3479993B1 (en) | Ring distributor for an extruder head for manufacturing a hose-like moulded material made of thermoplastic material | |
DE102010023300B4 (en) | Spiral distributor, blow head, blown film system, method for producing a blown film | |
EP3124123B1 (en) | Filter for high pressure nozzle, high pressure nozzle and method for producing a filter for a high pressure nozzle | |
DE202015001520U1 (en) | full cone nozzle | |
DE102017107563A1 (en) | Multilayer die | |
DE102022102462A1 (en) | Fluid Line Elbow | |
DE202021102286U1 (en) | Hollow cone nozzle | |
WO2008000251A1 (en) | A method for the production of a cable extruded from a foamable material, the extrusion device for carrying out this method, and the foamed product | |
DE2141459C3 (en) | Cutting nozzle with oxygen curtain | |
DE9320958U1 (en) | Flat jet nozzle for a high pressure cleaning device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AC | Divisional application: reference to earlier application |
Ref document number: 1992415 Country of ref document: EP Kind code of ref document: P |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FRICK, JUERGEN Inventor name: SCHMIDT, BORIS Inventor name: FECHT, ALBERT |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B21B 45/02 20060101ALN20130319BHEP Ipc: B22F 5/10 20060101ALI20130319BHEP Ipc: B22F 7/06 20060101ALI20130319BHEP Ipc: B05B 1/04 20060101AFI20130319BHEP Ipc: B21B 45/08 20060101ALN20130319BHEP Ipc: B05B 1/34 20060101ALI20130319BHEP Ipc: B22F 3/22 20060101ALI20130319BHEP Ipc: B05B 15/00 20060101ALI20130319BHEP |
|
17P | Request for examination filed |
Effective date: 20130517 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 502008011486 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: B05B0001060000 Ipc: B05B0001040000 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B21B 45/02 20060101ALN20130909BHEP Ipc: B05B 15/00 20060101ALI20130909BHEP Ipc: B05B 1/04 20060101AFI20130909BHEP Ipc: B05B 1/34 20060101ALI20130909BHEP Ipc: B22F 7/06 20060101ALI20130909BHEP Ipc: B21B 45/08 20060101ALN20130909BHEP Ipc: B22F 3/22 20060101ALI20130909BHEP Ipc: B22F 5/10 20060101ALI20130909BHEP |
|
INTG | Intention to grant announced |
Effective date: 20131002 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AC | Divisional application: reference to earlier application |
Ref document number: 1992415 Country of ref document: EP Kind code of ref document: P |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 657288 Country of ref document: AT Kind code of ref document: T Effective date: 20140415 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502008011486 Country of ref document: DE Effective date: 20140424 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2463869 Country of ref document: ES Kind code of ref document: T3 Effective date: 20140529 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140619 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 |
|
REG | Reference to a national code |
Ref country code: PL Ref legal event code: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140719 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140619 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502008011486 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140515 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140721 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140531 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140531 |
|
26N | No opposition filed |
Effective date: 20141222 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502008011486 Country of ref document: DE Effective date: 20141222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140319 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140620 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20080515 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20220518 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20220523 Year of fee payment: 15 Ref country code: IT Payment date: 20220531 Year of fee payment: 15 Ref country code: GB Payment date: 20220523 Year of fee payment: 15 Ref country code: FR Payment date: 20220523 Year of fee payment: 15 Ref country code: ES Payment date: 20220617 Year of fee payment: 15 Ref country code: DE Payment date: 20220519 Year of fee payment: 15 Ref country code: CZ Payment date: 20220510 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20220512 Year of fee payment: 15 Ref country code: PL Payment date: 20220425 Year of fee payment: 15 Ref country code: FI Payment date: 20220517 Year of fee payment: 15 Ref country code: BE Payment date: 20220518 Year of fee payment: 15 Ref country code: AT Payment date: 20220517 Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502008011486 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20230601 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 657288 Country of ref document: AT Kind code of ref document: T Effective date: 20230515 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20230515 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20230531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230516 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230515 Ref country code: CZ Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230515 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230601 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230515 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20231201 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230531 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230531 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20240628 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230516 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230516 |