EP3448590A1 - Method and device for cleaning metal workpieces - Google Patents
Method and device for cleaning metal workpiecesInfo
- Publication number
- EP3448590A1 EP3448590A1 EP17720474.0A EP17720474A EP3448590A1 EP 3448590 A1 EP3448590 A1 EP 3448590A1 EP 17720474 A EP17720474 A EP 17720474A EP 3448590 A1 EP3448590 A1 EP 3448590A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- cleaning
- steam
- nozzle
- nozzles
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004140 cleaning Methods 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims description 8
- 239000002184 metal Substances 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000001035 drying Methods 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 9
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000010998 test method Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000010408 sweeping Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 239000003125 aqueous solvent Substances 0.000 description 2
- 239000005068 cooling lubricant Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001416181 Axis axis Species 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/049—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with provisions for working under increased or reduced pressure, with or without heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2230/00—Other cleaning aspects applicable to all B08B range
- B08B2230/01—Cleaning with steam
Definitions
- the invention relates to a method and an apparatus for cleaning workpieces made of metal by means of a jet of water vapor and / or hot water.
- Cooling lubricant has Runaway sets ⁇ in which only small amounts, for example ⁇ 100 (minimum dermengenkühlschmtechnik, MQL) or even ⁇ 20 ml / hour (minimum quantity lubrication, MMS), are applied. This has inter alia the advantage that only very small Men ⁇ gene occurring at liquid waste and that the chips produced are not contaminated and the Wiederverwen ⁇ manure can be supplied easily.
- impurities such as residues of the cooling lubricant
- Numerous methods are known for this, which use aqueous or non-aqueous solvents, and more recently aqueous solvents are preferred because they cause less cost and environmental problems.
- the workpieces are immersed in the solvent ⁇ and / or treated with a jet of the solvent. This not only removes residual lubricant and chips but also interfering burrs.
- DE 44 10 550 Cl describes a method for drying of workpieces, which have a cleaning and rinsing process underzo ⁇ gene, described in a pressure-tight chamber, the parts are heated in the chamber by first overpressure initiated ended steam, the parts are first rinsed by the formed condensation water. Then, if necessary, the pressure is reduced below atmospheric pressure, then evaporate the condensation residues on the surface of the parts, which can then be removed from the chamber dry.
- the parts are subject to strong temperature fluctuations, for example from over 100 ° C to near 0 ° C.
- the invention has as its object to provide a method suits ⁇ ben, can be cleaned with the work pieces of metal, especially after machining ⁇ processing under minimal lubrication and optionally dried, wherein the temperature of the workpiece remains in a frame Bear ⁇ a further processing or installation without prior tempering ⁇ light. Another object is to provide a device with which this method can be carried out.
- the hot water preferably has a temperature of 70 to 95 ° C before passing through the nozzle. Steam is used, then this has before passing through the nozzle preferably has a pressure of 0.2 to 1 MPa, particularly preferably 0.2 to 0.4 MPa, insbeson ⁇ particular 0.3 MPa (absolute) and a temperature between 120 and 200 ° C, more preferably 135 to 160 ° C, especially 140 ° C.
- water vapor in particular hot steam (unsaturated steam or dry steam) or saturated steam
- water is used without additives for steam generation.
- an electrode-steam generator for steam generation.
- demineralized water it is preferably not use demineralized water, but water having a sufficient conductivity, used in particular with mineral content, for example line ⁇ or well water.
- the water can be circulated in particular in the circulation.
- ⁇ tend in this context means that the point of impact, ie the point at which the jet of steam or hot water impinges on the surface of the workpiece and impurities are absorbed by the surface in the water or condensed water
- This scanning path may be contiguous from one end to the other or may consist of several sections, if there are several jets for generating the jet, several may be the other Nozzle associated scan paths may be present or it can also single or all nozzles only in each case contribute a section to a scan path. In the simplest case, so many nozzles can be arranged around the workpiece that overlap the corresponding sampling and can be cleaned and dried by a simple linear movement, the entire surface of the workpiece.
- the reduced pressure in the closed vessel is preferably completely 850-20 hPa, more preferably Zvi ⁇ rule 100 and 300 hPa absolute.
- the inventive method can be performed such that the at ⁇ on the workpiece surface back remaining traces of water completely evaporated, which means that drying of the workpiece surface in the same Ar beits Colour ⁇ as the cleaning is carried out. Since the workpiece is because ⁇ after dry and tempered, it may be further processed or assembled immediately.
- the scanning of the surface of the workpiece is performed so that the scanning moves on a screw ⁇ shaped path, which results by superimposing a circular motion and a linear movement.
- the transport of contaminants takes place continuously in a direction opposite to that of the linear movement towards the end of the workpiece.
- one nozzle is sufficient.
- the linear movement can be continuous. However, it can also be executed step by step, for example, after one or more complete circular movements.
- the scanning can be done advantageously by the workpiece, the nozzle or both parts are moved.
- the circular Be ⁇ movement can for example be effected in a simple manner by the workpiece is rotated about an axis which coincides with the directional axis of the linear movement. But it is also possible only the nozzle on a closed path around the Move workpiece. It may be appropriate to return the nozzle after completion of a circular path back to the starting point to facilitate the supply of the nozzle with steam or hot water. During the return, the linear movement can be stopped.
- multiple nozzles are provided which are arranged in the direction of the linear movement and / or in a plane around the workpiece around, preferably with each moving ⁇ chen angular intervals.
- the nozzles do not describe complete circular movements but only circular arcs whose length may correspond, for example, to the angular spacing or a multiple thereof. After moving over such a circular arc, they are returned, resulting in an oscillating motion. This makes it easier to supply the nozzles with steam or hot water.
- the workpiece about an axis can be oscillated ⁇ the. This axis is preferably the direction of Linearbewe ⁇ supply.
- additional nozzles can for CompliCat ⁇ more refined workpieces with blind holes, undercuts and the like to be able to clean the entire surface, will be mounted in de ⁇ NEN the jet of steam or hot water perpendicular to the linear movement or at an angle of for example 45 ° to 90 ° , preferably 75 to 90 °, that is directed obliquely upwards.
- one or more nozzles are located on an example cross-shaped or disc-shaped nozzle carrier, which is further preferably rotatable.
- the directions of the one or more nozzles can thereby surface to be treated constitute 0 to 15 ° with a line perpendicular to an angle of 0 to 45 °, preferably, ie perpendicularly or obliquely to said surface to be directed out ⁇ .
- rotation of the nozzle carrier so possibly changes the direction of inclination.
- nozzles of different directions in the named boundaries can also be arranged on a nozzle carrier. This further improves the cleaning effect on complex components (with fissured surfaces).
- the invention is particularly suitable for machined metal workpieces.
- the rotational speed of a rotating nozzle carrier is preferably above 750 min -1 , more preferably between 1250 and 1750 min -1 , in particular at 1500 min -1 .
- a certain area can be left free around the axis of rotation.
- This area can be provided with a rotor blade structure, possibly with openings to the rear, and then generates a suction effect away from the workpiece as a result of the rotation, whereby the removal of condensate and water vapor as well as the drying are promoted.
- the running down from the workpiece water as well as the running down to the inner wall of the container splashing water collects at the bottom of the container in a sump and can be there sucked off or drained.
- the inventive method can be supplemented by optionally drying applied prior to introducing the workpiece into the closed vessel for cleaning and on the surface of an aqueous solution of a cleaning agent is sprayed be ⁇ vorzugt, as for example in the Annexes Gigen patent application DE 10 2014 101 123 AI is described.
- a cleaner concentrate with egg ⁇ nem content is applied from at least 0.5 weight percent of a ceremoniioni ⁇ rule or anionic surfactant to the workpiece.
- the nonionic surfactant may be an alkoxylate of a fatty alcohol having 6 to 22 carbon atoms in the alkyl radical.
- the anionic surfactant may be a sulfate, sulfonate or a carboxylic acid having an aliphatic, aromatic or aliphatic-aromatic hydrocarbon radical.
- Application of the cleaning solution may also be by temporary immersion in a bath.
- the process is preferably carried out so that the tempera ture ⁇ of the workpiece after completion of the cleaning and optionally drying by no more than 2 K of the temperature upstream of the Cleaning deviates. But it is of course also possible to carry out the process so that there is a predetermined temperature change.
- the invention also includes an apparatus for carrying out the method described above, comprising
- a treatment chamber with an opening which allows the passage of the workpiece to be cleaned and which can be closed pressure-tight,
- nozzle arrangement with one or more nozzles each, wherein holder and nozzle arrangement (s) can be moved relative to one another,
- a device connected to the interior of the treatment chamber for generating a negative pressure
- - means for adjusting the temperature of the hot water or water vapor and / or for adjusting the mass flow flowing through the nozzles.
- These means for adjusting the mass flow can for example so ⁇ well adjust the pressure of the water or steam or the flow resistance of the lines and nozzles or both.
- the flow resistance can be adjusted for example by means of throttle valves, variable orifices or the like.
- the device of the invention preferably comprises a SI ⁇ nozzle arrangement in which a plurality of nozzles on at least one surrounding the workpiece closed curve are disposed.
- This closed curve can be, for example, a circle in a plane or else a zigzag-shaped closed line.
- the at least one nozzle assembly of the device according to the invention may comprise at least one nozzle which is parallel to its own axis
- nozzles and / or spaced axis can rotate.
- several nozzles can be mounted on a rotating head.
- the scanning path generated by such a nozzle arrangement is then formed by superposition of a circular movement and the linear movement of the workpiece and / or the nozzle arrangement.
- the nozzle can also at an angle of for example 0 to 45 °, be ⁇ vorzugt 0 to 15 ° to be aligned with the axis of rotation.
- the nozzles are mounted on a multi-arm nozzle carrier so that a central area around the axis of rotation remains free of nozzles.
- the nozzle ⁇ carrier may be provided with a rotor blade structure, possibly with openings to the rear side, so that a suction effect from the nozzle side is formed in the rotation to the rear.
- the holder for the workpiece is also used as a closure for the opening of the treatment chamber. This can be easily realized if the holder is movable into and out of the treatment chamber.
- the apparatus further comprises means for measuring the surface temperature of the workpiece at at least one particular location. In order to avoid a disturbance of the cleaning and possibly drying process, means for non-contact measurement are preferred. These may, for example, be infrared thermometers in which the region of the workpiece to be measured is imaged by infrared optics on a suitable detector, wherein these measuring elements can still be adjusted to the emission properties of the workpiece surface.
- the device according to the invention preferably comprises a control device which regulates either the steam or hot water flow or the negative pressure or both automatically on the basis of the measured surface temperature and its deviation from a set desired value.
- the inner wall of the container by spraying the cleaning ⁇ supply water, containing the removed impurities can also be contaminated, it is advantageous repellent with a dirt and hydrogen, for example polyvinyl lytetrafluorethylen or silicone resin in the coated.
- the inventive method can be incorporated into automatic producti ⁇ onsabund, which may take place between machining or forming and assembly. Since it allows cleaning and drying in one operation, the entire process is simplified. In particular, it is suitable for the automated cleaning and optionally drying of components in the automobile industry, in particular components of internal combustion engines, for example engine blocks, cylinder heads, crankshaft housings, gearboxes and the like.
- the method according to the invention can be easily inserted into the cycle of corresponding production lines.
- the usual cycle time of the process in the Ferti ⁇ supply of cylinder heads or engine blocks for passenger car engines to three approximately equal parts to the actual cleaning and drying, ventilation, and opening the vacuum chamber and the change of the workpiece by closing the Chamber and producing the negative pressure is divided in ⁇ play each about 10 s at a cycle time of about 30 s IMP EXP ⁇ together.
- the method is suitable for workpieces made of a large number of materials, such as iron, cast iron, steel, brass, bronze, zinc and its alloys. In particular, it is above ⁇ geous for materials made of light metals, which typically have higher thermal expansion coefficients. Examples are aluminum, aluminum alloys with silicon, magnesium, copper, in particular aluminum casting alloys, magnesium, magnesium alloys, titanium and its alloys.
- the amount is greatly reduced in Verun ⁇ nahem waste water over the prior art, which results in cost reduction.
- the energy consumption in the method according to the invention can be kept comparable or even lower than in the conventional cleaning with compressed air.
- the surface is completely freed of moisture, lubricant residues and other impurities, which is not possible with compressed air.
- FIG. 1 shows a schematic longitudinal section through a device according to the invention according to a first embodiment.
- FIG. 2 shows a schematic side view of the workpiece with the marked scanning path of the device according to FIG. 1.
- FIG. 3 shows a schematic cross section through a device according to the invention according to a second embodiment.
- Figure 4 shows a schematic side view of the workpiece with drawn scanning paths of the device of Figure 3;
- Figure 5 shows an alternative embodiment with recycling of the cleaning liquid as a simplified flow pattern.
- FIG. 1 shows a device for carrying out the method according to the invention, a schematic longitudinal section.
- the device comprises a container 1 which is open at the top and can be closed in a vacuum-tight manner by a cover 2 with the participation of a seal 3.
- the container 1 continues downwards via a connecting tube 13 to a sump container 10.
- a workpiece 4 to be cleaned is housed and held by a holder.
- this holder and the necessary for the execution of the linear and rotary movement of the workpiece 4 necessary implementation by the container edge is not shown here, but can be easily supplemented by the expert.
- This holder with the workpiece 4 can perform a rotation described by the closed arrow 7 about an axis 5 and at the same time a linear movement in the direction of the arrow 6, which is located here in the axis 5.
- the axis of rotation 5 of the workpiece is vertically aligned here.
- a sump 11 can form during operation of the device due to running off, optionally contaminated water, which can be drained or sucked off via a sump valve 12.
- a negative pressure can be generated when the pump 20 sucks air from the interior of the container 1 via the vacuum line 21.
- the vacuum line 21 may be connected to the sump container 10 or directly to the container 1.
- a nozzle 27 is installed, which is connected via a line 26 with a generating unit for steam o- hot water. This unit is controllable with regard to the pressure and the temperature of the steam or hot water. As a result, the mass flow of the respective medium can be controlled.
- the nozzle 27 forms with the vertical or the axis 5 of the workpiece an obtuse angle in the ⁇ sem case, for example, about 110 °.
- the jet 28 of the medium strikes the surface of the workpiece 4 at an impact point at almost the same angle.
- an infrared temperature sensor 31 is further installed, in which the measuring point 36 is imaged on the surface of the workpiece 4 on ei ⁇ nem detector by an infrared optics, which outputs a surface temperature of the corresponding temperature signal via a measuring line 32 ,
- a negative pressure sensor 30 which emits a the negative pressure in the container 1 corresponding signal via a measurement line 33rd
- a control unit 35 receives signals via the measuring lines 32 and 33 and controls via the control lines 40 and 41 the mass flow of the respective medium emitted by the generation of a 25 such that the temperature measured via the measuring line 32 from the tempera ⁇ tursensor 31 assumes a predetermined setpoint.
- the container 1 For cleaning and drying a workpiece 4, the container 1 is first opened by removing the lid 2 and the workpiece 4 is brought into the working position, where it is rotatably and slidably held by the holder (not shown). It is initially in the dashed dargestell ⁇ th lower starting position. The container 1 is airtight 29los ⁇ by placing the lid 2 using the seal 3 sen. Now, via the controller unit 35, the generating unit 25 and the vacuum pump 20 is turned on and the linear and rotary movement of the workpiece 4 initiated. In this case, first the face of the workpiece 4 and then the side surface of the steam or hot water jet 28 is cleaned.
- mass flow and negative pressure are controlled by the controller unit 35 of the first preset initial values so that the voreinge ⁇ set target temperature obtained at the measuring point 36th
- impurities on the surface of the workpiece 4 are partially mechanically removed by the transmitted pulse of the jet of steam as well as by dispersion in the water formed by condensation from the surface and carried along by the water.
- a hot water jet is similar. This water runs partly on the surface of the workpiece 4 and down, sometimes it is splashed and reaches the inner wall of the container 1, where it can also run down. Finally, a portion of the water also wets on the surface and evaporates, removing heat from the surface.
- the ablau ⁇ Fende water passes through the connection 13 in the Sumpfbenzol ⁇ ter 10 and forms the bottom 11, which is discharged through the valve 12, for example while the container 1 for changing the workpieces geöff ⁇ net, or also continuously, for example can be pumped, ,
- FIG. 2 illustrates the course of the cleaning according to the exemplary embodiment of the invention shown in FIG.
- FIG. 3 shows schematically a second embodiment of the device according to the invention in cross section with only the changed components are shown.
- ⁇ form four nozzles 68 are arranged in a plane on the circumference of the container 1 at the same angular distance from each other. These act simultaneously on the surface of the workpiece 4.
- FIG. 4 illustrates the course of the four scanning paths 60 generated by the nozzles 68 of the embodiment shown in FIG. 3 on the surface of the workpiece 4.
- the workpiece 4 is linearly moved by the stroke at one revolution. Again, the landing sites 61 of the adjacent scan paths 60 overlap and the extent of the overlap can be adjusted by adjusting the stroke as needed.
- a cylinder head for a passenger car engine was treated according to the invention.
- a commercially available adhesive sheet was placed on a smooth ge ⁇ cleaned and dried surface and adhered over the entire surface and fixed thereto.
- the adhesive sheet could not be attached to the same smooth finish.
- the vacuum pump 20 with a condensation unit 73 connected ver ⁇ whose return likewise opens in the oil separator 74th From a clean tank 75 in the second filter and separator stage 72 is fed via a water pump 76 in a supply line 77 of the steam generator 25.
- the injection of steam is ensured with high dynamic jet pressure.
- the circulation according to FIG. 5 additionally utilizes residual heat of the recovered cleaning liquid, so that an additional energy saving is realized. Fresh water is supplied only as needed due to the losses in the second filter and separator stage 72.
- FIG. 5 also schematically illustrates a holder 78 for the workpiece 4 that is automatically movable into and out of the treatment chamber on two axes H, V.
- the holder 78 at the same time forms a pressure-resistant closure for the opening of the treatment chamber 1 in the working position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016107840.9A DE102016107840A1 (en) | 2016-04-27 | 2016-04-27 | Method and device for cleaning metal workpieces |
PCT/EP2017/060140 WO2017186888A1 (en) | 2016-04-27 | 2017-04-27 | Method and device for cleaning metal workpieces |
Publications (2)
Publication Number | Publication Date |
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EP3448590A1 true EP3448590A1 (en) | 2019-03-06 |
EP3448590B1 EP3448590B1 (en) | 2023-08-02 |
Family
ID=58645072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17720474.0A Active EP3448590B1 (en) | 2016-04-27 | 2017-04-27 | Method and device for cleaning metal workpieces |
Country Status (7)
Country | Link |
---|---|
US (1) | US20190210073A1 (en) |
EP (1) | EP3448590B1 (en) |
CN (2) | CN115156139A (en) |
DE (1) | DE102016107840A1 (en) |
HU (1) | HUE064643T2 (en) |
RU (1) | RU2741977C2 (en) |
WO (1) | WO2017186888A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017125666A1 (en) | 2017-11-02 | 2019-05-02 | Elwema Automotive Gmbh | Apparatus and method for cleaning workpieces by means of a steam jet and steam generator therefor |
CN113865317B (en) * | 2021-09-17 | 2022-09-27 | 温州市万荣电镀有限公司 | Cleaning and drying device for electroplated parts |
CN115808055B (en) * | 2022-12-15 | 2023-04-14 | 山东华燚工程技术有限公司 | Ferric phosphate integrated drying device, drying system and drying method |
CN116317917B (en) * | 2023-03-30 | 2023-10-20 | 中国水利水电第十二工程局有限公司 | Photovoltaic power generation device |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58210888A (en) * | 1982-06-02 | 1983-12-08 | ナニワブラスト工業株式会社 | Method of washing and drying electric apparatus |
DE4410550C1 (en) | 1994-03-26 | 1996-06-27 | Werner Meisner | Method and appts. for drying industrial parts in drying chamber |
DE19609119C2 (en) * | 1996-03-08 | 1999-08-26 | Wack O K Chemie Gmbh | Process for cleaning objects |
DE19703310C1 (en) * | 1997-01-30 | 1998-04-23 | Meisner Werner | Industrial cleaning plant for surface treatment of workpieces |
JP2002252199A (en) * | 2001-02-23 | 2002-09-06 | Speedfam Clean System Co Ltd | Method and system for processing work with vapor |
DE102004046802B3 (en) * | 2004-09-27 | 2006-04-27 | Mafac Ernst Schwarz Gmbh & Co. Kg Maschinenfabrik | Treatment device and method for the cleaning and / or drying treatment of workpieces |
AT503526B1 (en) * | 2006-04-25 | 2008-07-15 | Voest Alpine Ind Anlagen | SPRAY NOZZLE ADJUSTMENT |
DE102006039035B4 (en) * | 2006-08-19 | 2023-06-01 | Werner Meissner | Process for surface treatment of a workpiece in the treatment chamber of an industrial cleaning plant |
DE102006059810A1 (en) * | 2006-12-15 | 2008-06-19 | Rena Sondermaschinen Gmbh | Apparatus and method for cleaning objects, in particular thin disks |
DE102007027944B4 (en) | 2007-06-18 | 2016-02-04 | Werner Meissner | Method and device for cleaning objects in a treatment chamber |
DE102008060776A1 (en) * | 2008-12-05 | 2010-06-10 | Meissner, Werner | Industrial plant for treating e.g. motor vehicle part, in treatment chamber, has treatment chamber arranged downstream to radiation chamber, where after-treatment of workpiece is associated with radiation of workpiece in treatment chamber |
RU2519411C1 (en) * | 2010-03-08 | 2014-06-10 | Шарп Кабусики Кайся | Method of processing with lubricant for mould, mould, method of manufacturing anti-reflecting film, device for processing with lubricant for mould and device for mould washing/drying |
US9646858B2 (en) * | 2011-06-23 | 2017-05-09 | Brooks Automation, Inc. | Semiconductor cleaner systems and methods |
WO2013158937A1 (en) * | 2012-04-18 | 2013-10-24 | Advanced Wet Technologies Gmbh | Hyperbaric methods and systems for rinsing and drying granular materials |
DE102014101123B4 (en) | 2014-01-30 | 2022-10-20 | Elwema Automotive Gmbh | Method and system for cleaning a metal workpiece after machining with minimum quantity lubrication |
CN105149263B (en) * | 2015-07-02 | 2018-04-10 | 无锡新弘田环保技术有限公司 | A kind of steam and superheated water cleaning and drying method and equipment |
CN204974573U (en) * | 2015-09-10 | 2016-01-20 | 无锡新弘田环保技术有限公司 | Wash drying equipment |
-
2016
- 2016-04-27 DE DE102016107840.9A patent/DE102016107840A1/en active Pending
-
2017
- 2017-04-27 WO PCT/EP2017/060140 patent/WO2017186888A1/en active Application Filing
- 2017-04-27 CN CN202210298115.8A patent/CN115156139A/en active Pending
- 2017-04-27 RU RU2018137901A patent/RU2741977C2/en active
- 2017-04-27 CN CN201780039839.8A patent/CN109328117B/en active Active
- 2017-04-27 EP EP17720474.0A patent/EP3448590B1/en active Active
- 2017-04-27 US US16/096,770 patent/US20190210073A1/en not_active Abandoned
- 2017-04-27 HU HUE17720474A patent/HUE064643T2/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN115156139A (en) | 2022-10-11 |
WO2017186888A1 (en) | 2017-11-02 |
RU2018137901A3 (en) | 2020-07-23 |
RU2741977C2 (en) | 2021-02-01 |
RU2018137901A (en) | 2020-05-27 |
DE102016107840A1 (en) | 2017-11-02 |
EP3448590B1 (en) | 2023-08-02 |
CN109328117B (en) | 2022-04-19 |
CN109328117A (en) | 2019-02-12 |
HUE064643T2 (en) | 2024-04-28 |
US20190210073A1 (en) | 2019-07-11 |
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