EP1147239A1 - Verfahren zum thermischen beschichten von flächen eines innenraumes, insbesondere von zylinderlaufflächen eines zylinderkurbelgehäuses einer verbrennungskraftmaschine - Google Patents
Verfahren zum thermischen beschichten von flächen eines innenraumes, insbesondere von zylinderlaufflächen eines zylinderkurbelgehäuses einer verbrennungskraftmaschineInfo
- Publication number
- EP1147239A1 EP1147239A1 EP99963376A EP99963376A EP1147239A1 EP 1147239 A1 EP1147239 A1 EP 1147239A1 EP 99963376 A EP99963376 A EP 99963376A EP 99963376 A EP99963376 A EP 99963376A EP 1147239 A1 EP1147239 A1 EP 1147239A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- coated
- coating
- sandblasting
- crankcase
- 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.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
- C23C4/16—Wires; Tubes
Definitions
- the invention relates to a method for the thermal coating of surfaces of an interior with the features mentioned in the preamble of claim 1.
- thermal coating for example a plasma coating
- a coating material in particular a metal
- a flame melted in it and deposited on a substrate.
- coatings with different properties in particular with desired sliding properties, hardness properties, layer thicknesses or the like, can be achieved.
- thermal coating for example in the treatment of cylinder liners in cylinder crankcases of internal combustion engines. It is also known to use such thermal coating in connecting rod eyes to achieve a bearing layer. In such applications, it is important that the applied thermal coating has a special quality, since the running properties of pistons moving in the cylinder crankcases or in the connecting rod eyes, for example crankshafts, depend crucially on the coating. It is particularly important that the coating adheres to the surface to be coated with a defined adhesive tensile strength. It is also important that the coating material of the coating material is as homogeneous as possible so that internal stresses are avoided. Such stresses can lead to the formation of microcracks, flaking or the like.
- micro-pressure chamber system which serves as a lubricant reservoir, is formed by a defined oxide and pore formation during the coating and subsequent mechanical processing.
- the invention has for its object to provide a method of the generic type with which a thermal coating with defined adhesive tensile strength can be achieved in a simple manner.
- this object is achieved by a method having the features mentioned in claim 1.
- the combination of the defined mean roughness of preferably 10 to 12 ⁇ m depending on a substrate alloy and the areal distribution of the heights and depths of 50% each over the entire surface to be coated leads to a homogeneous distribution of the thermal coating to be subsequently applied and its uniform minimum adhesive tensile strength the entire coated area.
- the surface is roughened by sandblasting, preferably aluminum oxide grains Al 2 O 3 with a preferred grain size between 0.18 and 1.18 mm depending on the substrate alloy.
- sandblasting preferably aluminum oxide grains Al 2 O 3 with a preferred grain size between 0.18 and 1.18 mm depending on the substrate alloy.
- the process according to the invention prevents the formation of vortices during the application of the coating, at least reduces it to such an extent that the formation of uncontrolled oxygen inclusions is avoided. Due to the high adhesive tensile strength achieved, a subsequent post-processing of the coating, for example a surface treatment by honing, fine spindles or the like, is furthermore considerably simplified since layer detachments are reliably avoided during this post-treatment.
- the pretreatment of the surface to be coated is carried out by sandblasting beyond an edge region of the interior to be coated.
- an edge surrounding the interior is also pre-treated.
- This pretreatment of the edge area ensures that it is also coated during the subsequent coating.
- this makes it possible to provide post-processing of the coated surfaces in such a way that an inlet chamfer is structured and edge detachments of the thermal coating in the edge / edge region are avoided during the structuring of the inlet chamfer. This is possible because the coating of the cylinder running surface does not stop at the end of the essentially vertical surface, but passes into the later run-in chamfer.
- Figure 1 is a schematic view of a processing station for thermal
- Figure 2 is a schematic side view of a processing section of the
- Figure 3 is a schematic plan view of the machining section according to
- Figure 4 is a detailed view of a coated surface
- Figure 5 is a detailed view of a pretreated surface.
- FIG. 1 schematically shows a processing station 10 for the thermal coating of cylinder running surfaces of cylinder crankcases 12. Only one cylinder crankcase 12 is indicated in each case, this also only having indicated cylinder bores 14, here four. The walls delimiting the cylinder bores 14, that is to say the cylinder running surfaces, are to be coated by means of the processing station 10. The coating is done using a plasma coating technique. In the context of the present description, the actual process of plasma coating is not dealt with in more detail, since this is known.
- the cylinder crankcases 12 are moved through the processing station 10 by means of a transport path 16, for example a roller conveyor or the like.
- the processing station 10 comprises processing sections 18, 20, 22, 24, 26, 28, 30, 32, 34 and 36. The individual processing sections will be briefly discussed below.
- FIG. 1 details such as drives, locks, inlets and outlets for gases, electrical energy or other media, control and monitoring devices or the like have been omitted for reasons of clarity.
- the processing section 18 comprises a feed station at which the cylinder crankcase 12 are transferred to the processing station 10.
- the cylinder crankcases 12 have already been manufactured in a manner not to be considered in detail here and are mechanically finished with all the necessary functional elements, such as, for example, cylinder bores, coolant channels, fitting bores or the like.
- the processing section 20 comprises a washing or cleaning station, within which the cylinder crankcases are completely washed free of chips and oil. Furthermore, the cylinder running surfaces to be coated are dried and degreased absolutely. The absence of chips and oil is achieved, for example, by an injection flood wash, with critical areas, such as undercuts, bores, cavities or the like, being cleaned at high pressure by targeted injection of a wash liquor.
- Degreasing is carried out, for example, by superheated steam, which is conducted, for example, by appropriately designed lances onto the cylinder surfaces of the cylinder crankcase 12.
- the superheated steam for example, has a temperature of 130 ° C to 160 ° C and is introduced at a pressure of approximately 150 to 180 mbar.
- the subsequent drying of the cylinder crankcase 12 is preferably carried out under vacuum, for example at a negative pressure of 80 to 120 mbar.
- the previously cleaned and dried cylinder crankcase 12 is provided with a cover template 38.
- the cover template 38 has openings 40 indicated here.
- the openings 40 are aligned with the cylinder bores 14, so that when the cover template 38 is applied, the cylinder bores 14 remain accessible from above through the openings 40.
- the cover template 38 is designed such that all other areas of the cylinder crankcase 12 are covered by the latter. This applies in particular to coolant channels, fitting bores or the like.
- the cover template 38 can be placed on the cylinder crankcase 12 manually or by a corresponding gripper or the like.
- the cover template 38 has an exact flat underside, which rests on the cylinder head surface of the cylinder crankcase 12 that has already been ground or milled. To fix the cover template 38, this can have fixing pins, not shown in detail here, which engage, for example, in fitting holes provided anyway in the cylinder crankcase 12, for example for later attachment of a cylinder head.
- the cover template 38 is made of a material that is resistant to the subsequent processing. In particular, this has a sufficiently high strength against a sandblast attack and against a plasma treatment and the like.
- the cover template 38 here lies only on the cylinder crankcase 12 due to its own weight.
- Sandblasting of the cylinder bores 14 takes place in the machining section 24. This sandblasting is carried out in order to achieve a roughness of the cylinder running surfaces so that the plasma coating taking place in the machining section 32 obtains the necessary adhesive tensile strength.
- at least one blasting lance possibly two or more blasting lances, is introduced into the cylinder bores 14 simultaneously or in succession. The lances reach through the openings 40 of the cover template 38.
- Sandblasting is carried out, for example, with aluminum oxide Al 2 O 3 with a grain size of 0.18 to 1.18 mm, depending on the required surface roughness, based on the substrate alloy of the cylinder crankcase or adhesive tensile strength of the subsequent plasma coating.
- the sandblasting is preferably carried out using a double sandblasting unit which has two sandblasting lances.
- the simultaneous sandblasting of the cylinder bores 1 and 3 takes place, that is to say cylinder bores 14 which are not immediately adjacent. This makes better handling possible in the case of relatively cramped available space conditions, which depend on the pitch of the cylinder bores 14. This also halves the machining for a complete cylinder crankcase, since two cylinder bores are machined simultaneously.
- either the cylinder crankcase 12 or the sandblasting unit is moved by the pitch of the cylinder bore 14, so that the cylinder bores 2 and 4 can then be sandblasted.
- the sandblasting takes place through the openings 40 of the cover templates 38, that is, the blasting lances are introduced through the cover template 38 into the cylinder bores 14. All other areas of the cylinder crankcase 12 are protected by the cover template 38 so that they do not come into contact with the sandblasting agent applied under pressure, so that the surfaces thereof are not impaired in any way.
- the action of the sandblasting takes place exclusively on the cylinder running surfaces of the cylinder bores 14.
- the sandblasted cylinder crankcase 12 is then cleaned in the machining section 26 by removing dust, in particular very fine dust, from the cylinder bores 14 by the sandblasting. This can be done, for example, by cleaned, de-oiled and water-free compressed air, for example at a pressure of approximately 5 to 6 bar, with simultaneous suction of the dusts.
- all cylinder bores 14 are cleaned, that is, blown out and suctioned out, at the same time.
- the cylinder crankcase 12 is measured, in particular a roughness measurement of the cylinder running surfaces.
- the measurement can be carried out fully automatically by means of suitable devices, for example photogrammetry. In this case, all cylinder bores 14 or a sample of only one of the cylinder bores 14 or a cylinder bore 14 of each nth cylinder crankcase 12 can be measured. After measuring the cylinder crankcase 12, they are transferred to the processing section 30, within which the cylinder crankcase 12 is marked. If the measurement shows that the roughness lies outside the specified tolerances, the corresponding cylinder crankcase 12 can be sorted out and, if necessary, fed back to the sandblasting station. However, the number of the maximum possible blasting processes is limited. If a faulty cylinder crankcase is determined, the frequency of the roughness measurement can be increased.
- the cylinder crankcases are transferred to the machining section 32, in which the actual thermal coating of the cylinder running surfaces takes place.
- the plasma coating is carried out in a manner known per se, in that a coating material, in particular a metal, is fed to a flame, melted out in the flame and deposited on the cylinder running surfaces.
- a coating atmosphere for example oxygen and / or nitrogen or another process gas, is supplied to stabilize the flame and / or to regulate the oxide content in the plasma layer.
- the plasma coating of the cylinder running surfaces can be carried out individually for each of the cylinder bores 14 or, similarly to sandblasting, by means of a double plasma unit, by means of which the cylinder bores 1 and 3 and then the cylinder bores 2 and 4 are coated first.
- the covering template 38 which is still located on the cylinder crankcase 12, reliably prevents impairment, in particular contamination, of areas of the cylinder crankcase 12 that are not to be coated.
- the cylinder crankcases are transferred to the processing section 34. This can optionally be part of a cooling zone. According to a further exemplary embodiment, a separate cooling zone is provided between the plasma coating in the processing section 32 and the processing section 34.
- the cover template 38 is removed. This is removed from the cylinder crankcase 12 either manually or by auxiliary devices. Since the cover template 38 rests only on the cylinder crankcase 12 due to its own weight, additional measures for removing the cover template 38 are not necessary. Finally, the cylinder crankcase 12 is removed in a machining section 36 of the machining station 10 and fed to further machining, for example honing the plasma-coated cylinder bores 14, to attaching an inlet chamfer to the cylinder bores 14.
- the cylinder crankcase 12 can be marked in the section 36.
- the cylinder crankcase 12 is marked, for example, by a serial number or the like.
- the openings 40 of the cover template 38 are slightly larger than the cylinder bores 14, so that a corresponding edge coating of the edge regions of the cylinder crankcase 12 surrounding the cylinder bores 14 takes place. It is hereby advantageously achieved that the later chamfer area has a correspondingly high adhesive tensile strength against cutting forces of the chamfering tool and the plasma coating is not damaged during the chamfering.
- the stenciling of the cylinder crankcase 12 is maintained throughout the entire passage through the processing sections 24, 26, 28, 30 and 32.
- masking templates are applied in the processing section 22 and removed in the processing section 34.
- the covering templates 38 used in accordance with this exemplary embodiment must therefore be suitable both for sandblasting in the processing section 24 and for plasma coating in the processing section 32. Since on the one hand it is a material-removing process and on the other hand it is a material-applying process, the cover template 38 has to do justice to both mutually opposing processes.
- the stenciling of the cylinder crankcase 12 is illustrated in a further exemplary embodiment with reference to FIGS. 2 and 3.
- a schematic side view and a schematic top view of the machining section 24 or the machining section 32 are shown.
- the basic structure within the processing sections 24 and 32 is the same. The only differences are the sandblasting devices as tools and the plasma coating devices as tools. However, this will not be dealt with in more detail in the context of the present description.
- the stenciling of the cylinder crankcase 12 is decisive both in the case of sandblasting in the machining section 24 and in the case of plasma coating in the machining section 32.
- a cylinder crankcase 12 is arranged on a lifting table 42.
- the lifting table 42 is integrated in the transport path 16. This is done in such a way that the cylinder crankcase 12 is transported by means of the transport path 16 into the respective processing sections 24 and 32 and can be transferred there into its respective processing position by means of the lifting tables 42.
- a machining tool 44 each having a lance or, according to the exemplary embodiments already explained, two or more lances 46.
- the lances 46 are designed accordingly either for sandblasting in the processing section 24 or for plasma coating in the processing section 32.
- the processing stations 24 and 32 further comprise a device, designated here overall with 50, for stenciling the cylinder crankcase 12.
- a device designated here overall with 50
- the device 50 comprises a turntable 52, which by means of a Drive 54 is rotatable about its axis of rotation 56 in defined steps.
- the turntable 52 has, as the schematic plan view in FIG. 3 better illustrates, receptacles 58 for one cover template each. From the top view it is clear that the cover templates 38 only have the openings 40, which are each assigned to the cylinder bores 14.
- the turntable 52 can be rotated step by step in a defined manner by means of the drive 54. In the exemplary embodiment shown, four templates 38 are arranged on the turntable 52, so that it can be rotated step by step in each case by 90 °.
- the device 50 is associated with an indicated cleaning device 62, which may have a milling cutter 64, for example.
- a device for exchanging wear sleeves which are arranged in the template 38, can also be provided.
- suction devices 66 and 68 which are indicated here, are also provided.
- the device 50 shown in FIGS. 2 and 3 has the following function:
- Exactly one cover template 38 is always brought into a processing position by means of the drive 54.
- the cover template 58 has reached its exact position, which is defined by the stops 60, the cylinder crankcase 12 is moved upward, that is to say against the cover templates 38, by means of the lifting table 42.
- the openings in the cover template 38 and the cylinder bores 14 of the cylinder crankcase 12 come into an aligned position.
- either tools are used for sandblasting according to processing section 24 or piasma coating according to processing section 32.
- a next cover template 38 is in a transition position and a cover template 38 is in a position assigned to the cleaning device 62 (sleeve exchange device).
- Another cover template 38 is located between the cleaning position and the processing position. It is hereby achieved that at the same time, when a cover template 38 assumes its covering function, a second cover template 38, namely this cover template 38 which is exactly offset by 180 °, is cleaned by means of the device 62.
- the milling device 64 can, for example, restore the dimensions of the openings 40 of the cover templates 38. This can be impaired, for example, by deposits during the plasma coating. The Dimensional accuracy of the openings can also be achieved by replacing appropriate wear sleeves in the cover templates.
- the turntable 52 is rotated through 90 ° in each case, so that each cylinder crankcase 12 is assigned a new (cleaned) cover template 38. This ensures a constant processing quality during sandblasting or plasma coating.
- the arrangement of the cleaning device 62 can be dispensed with in the processing station 24, since there is no additional material application that could impair the dimensional accuracy of the openings 40. Merely because of the material removal, covering templates 38 or wear sleeves that are no longer true to size can be replaced.
- FIG. 4 shows a schematic enlargement of a section of the cylinder crankcase 12 in the area of a cylinder bore 14.
- the schematic enlargement is intended to clarify that the surface 70 to be coated was provided with a roughening 72 in the processing section 24 and with a coating 74 in the processing section 32.
- the cover template 38 is arranged on the cylinder crankcase 12 and has the through opening 40 in the region of the cylinder bore 14.
- the through opening 40 is - seen in diameter - slightly larger than the cylinder bore 14, so that an edge 76 is not covered by the cover template 38.
- the edge 76 is, for example, between 2 and 3 mm.
- edge 76 By forming the edge 76 it is achieved that during the sandblasting in the processing section 24 and the thermal coating in the processing section 32, the edge 76 is also treated, that is to say roughened and coated. This results in a very good coating also in the area of the edge 76. In particular for a subsequent - not explained here - attachment of an inlet chamfer to the cylinder bores 14 is achieved, that a coating 74 with a sufficiently high adhesive tensile strength is also arranged on the cylinder crankcase 12 in the area of the later run-in chamfer.
- the cylinder crankcase 12 is made of an aluminum alloy and has the prepared cylinder bores 14. These cylinder bores 14 are finely spindleed in accordance with predetermined tolerances.
- the tolerances are preferably for the roundness ⁇ 10 ⁇ m, the straightness ⁇ 10 ⁇ m, the cylindrical shape ⁇ 10 ⁇ m and the parallelism ⁇ 10 ⁇ m.
- the initial value of the surface roughness of the cylinder running surfaces not yet pretreated and coated in the processing station 10 is ⁇ 15 ⁇ m for the average roughness depth RZ.
- the tolerances and surface roughness values mentioned are obtained by leveling the raw, cast cylinder bore 14 and subsequent fine spindles.
- drilling heads are preferably used, the cutting inserts of which have a cutting radius of ⁇ 0.8 mm and have a chip breaker.
- a cutting speed in the leveling and fine spindles is selected such that a processing emulsion or the like is not included in the surface 70 to be coated subsequently, since this could be released during sandblasting of the leveled and finely spindle surface 70 and could lead to subsequent layer detachments of the thermal coating 74.
- the cylinder crankcase 12 is brought into contact with a pivoted-in cover template 38 by means of the lifting table 42.
- a lifting plate of the lifting table 42 is cut out in the area of the crank chamber of the cylinder crankcase 12, so that the blasting material can be safely extracted by means of the suction 68 (FIG. 2).
- a return funnel which opens directly into a blasting material return, is arranged below the lifting table 42. Vagabonding dusts and blasting material are avoided as far as possible.
- the suction 68 can be connected to a main suction line via flexible suction lines.
- the machining section 24, in which the cylinder bores 14 are sandblasted, is assigned a blasting unit which comprises the tool 44 and one, preferably two, blasting lances 46 (FIG. 2).
- a blasting unit which comprises the tool 44 and one, preferably two, blasting lances 46 (FIG. 2).
- the blasting material which has a grain size of 0.18 mm to 1.18 mm, preferably 0.35 mm to 0.70 mm, depending on the substrate alloy of the cylinder crankcase.
- a defined surface roughness 72 of the surface 70 is obtained by means of such sandblasting.
- the surface 70 is roughened in such a way that the surface center roughness RA is between 10 and 12 ⁇ m and the average roughness depth RZ is> 70 ⁇ m.
- the view of a surface 70 which has the roughening 72 is illustrated on the basis of the schematic view in FIG.
- the jet lances 46 are moved over the axial length of the cylinder bores 14 and rotate at the same time.
- a speed of rotation of the jet lances 46 is between 100 to 300 rpm, in particular approximately 200 rpm.
- the blasting of the cylinder bores 14 takes place only after the blasting lance 46 has been immersed so far in the covering template 38, that is to say in the through opening 40, that contamination of the cylinder crankcase 12 with blasting material is avoided.
- the height of the cover template 38 is, for example, approximately 6 cm.
- Sandblasting is carried out, for example, at a rate of approximately 1100 g per min and a pressure of approximately 5 to 6 bar.
- the required grit size of the blasting material is set by a screening device upstream of the blasting unit.
- the grit is sieved to a grain size of> 0.16 mm to ⁇ 0.7 mm depending on the grit size used.
- Fine dust produced during blasting which is created, for example, by the aluminum oxide particles of the blasting material bursting, is screened out by the sieve lines. Furthermore, due to the upper limitation of the screening, larger-sized grains of the blasting material or impurities are reliably screened out.
- the beam lances remain active in a second beam path after the downward movement during the subsequent upward movement, so that the surface 70 is blasted twice. It is thus possible to break peaks designated 78 in FIG. 5 in order to set the required values for the center roughness and the average roughness depth RA or RZ.
- the defined pretreatment of the surface 70 in the working section 24 ensures that the turbulence 80 indicated schematically in FIG adjacent peaks 78 of the blasted surface 70, which form so-called microturbulences, can be avoided.
- These eddies 80 arise when the coating 74 is applied in the processing section 32.
- the coating material is deposited on the roughened surface 70 with the plasma flame at speeds of approximately 400 to 600 m / s.
- the vortices 80 would form, which lead to oxygen inclusions, so that uncontrolled oxide formation and unmelted particles of the coating material could occur in the region of these oxygen inclusions.
- the defined pretreatment of the surface 70 largely avoids the formation of these eddies 80 or minimizes them to such an extent that they have no negative effects on the coating 70.
- a cylinder crankcase with four cylinder bores has been assumed. It goes without saying that the machining of the cylinder running surfaces according to the invention by means of appropriately adapted tools can also take place in the case of cylinder crankcases with fewer or more cylinder bores.
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19860297 | 1998-12-18 | ||
DE19860297 | 1998-12-18 | ||
DE19910578A DE19910578A1 (de) | 1998-12-18 | 1999-03-10 | Verfahren zum thermischen Beschichten von Flächen eines Innenraumes, insbesondere von Zylinderlaufflächen eines Zylinderkurbelgehäuses einer Verbrennungskraftmaschine |
DE19910578 | 1999-03-10 | ||
PCT/EP1999/009454 WO2000037704A1 (de) | 1998-12-18 | 1999-12-03 | Verfahren zum thermischen beschichten von flächen eines innenraumes, insbesondere von zylinderlaufflächen eines zylinderkurbelgehäuses einer verbrennungskraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1147239A1 true EP1147239A1 (de) | 2001-10-24 |
Family
ID=26051066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99963376A Ceased EP1147239A1 (de) | 1998-12-18 | 1999-12-03 | Verfahren zum thermischen beschichten von flächen eines innenraumes, insbesondere von zylinderlaufflächen eines zylinderkurbelgehäuses einer verbrennungskraftmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1147239A1 (de) |
WO (1) | WO2000037704A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8534256B2 (en) | 2011-08-29 | 2013-09-17 | Ford Global Technologies, Llc | Method of making a barbed surface for receiving a thermal spray coating and the surface made by the method |
DE102019104017A1 (de) * | 2019-02-18 | 2020-08-20 | Volkswagen Aktiengesellschaft | Vorrichtung zum Beschichten einer Zylinderbohrung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5380564A (en) * | 1992-04-28 | 1995-01-10 | Progressive Blasting Systems, Inc. | High pressure water jet method of blasting low density metallic surfaces |
WO1997016578A1 (de) * | 1995-10-31 | 1997-05-09 | Volkswagen Aktiengesellschaft | Verfahren zum herstellen einer gleitfläche auf einem metallischen werkstück |
US5622753A (en) * | 1996-04-08 | 1997-04-22 | Ford Motor Company | Method of preparing and coating aluminum bore surfaces |
EP0863322B1 (de) * | 1997-03-04 | 2003-11-05 | Volkswagen Aktiengesellschaft | Verfahren zum Herstellen eines Pleuels |
-
1999
- 1999-12-03 EP EP99963376A patent/EP1147239A1/de not_active Ceased
- 1999-12-03 WO PCT/EP1999/009454 patent/WO2000037704A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0037704A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2000037704A1 (de) | 2000-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10230847B3 (de) | Verfahren und Vorrichtung zur Innenbeschichtung von Hohlräumen durch thermisches Spritzen | |
EP2455510B1 (de) | Vorrichtung für das thermische Beschichten von Zylinderinnenflächen bei Kurbelgehäusen | |
EP1929126A1 (de) | Verfahren zum herstellen eines zu beschichtenden gasturbinen-bauteils mit freigelegten öffnungen, vorrichtung zur durchführung des verfahrens und beschichtbare turbinenschaufel mit filmkühlöffnung | |
DE102004038183A1 (de) | Verfahren zur Bearbeiten von Zylinderkurbelwellengehäusen mit gespritzten Zylinderlaufbahnen | |
EP1141438B1 (de) | Hilfsvorrichtung zum thermischen beschichten von flächen eines innenraumes | |
EP2029317A1 (de) | Verfahren zur herstellung eines pleuels | |
DE102013211324A1 (de) | Verfahren und Anlage zum Vorbereiten und Beschichten einer Werkstückoberfläche | |
DE19924422A1 (de) | Verfahren zur Herstellung eines hartstoffbeschichteten Bauteils und beschichtetes, nachbehandeltes Bauteil | |
WO2000037789A1 (de) | Zylindergehäuse und verfahren zur herstellung eines zylindergehäuses | |
EP1147240B1 (de) | Verfahren zum thermischen beschichten einer fläche eines innenraumes und anordnung zur durchführung des verfahrens | |
DE19540572C2 (de) | Verfahren zum Herstellen einer im Betrieb eine hydrodynamische Schmierung gewährleistenden Gleitfläche auf einem metallsichen Werkstück, sowie eine Hubkolbenmaschine mit danach hergestellten Zylinderlaufbahnen | |
DE19934991A1 (de) | Verfahren zum thermischen Beschichten einer Fläche eines Innenraumes und Anordnung zur Durchführung des Verfahrens | |
DE102004038177B4 (de) | Verfahren zum thermischen Beschichten einer gegossenen Zylinderbohrung | |
DE102004038182A1 (de) | Verfahren zum spanabhebenden Bearbeiten von thermisch gespritzten Zylinderlaufbahnen | |
DE102004038174A1 (de) | Verfahren zur Herstellung eines Zylinderkurbelwellengehäuses mit thermisch gespritzter Zylinderlauffläche | |
DE19910665A1 (de) | Hilfsvorrichtung zum thermischen Beschichten von Flächen eines Innenraumes | |
DE19910578A1 (de) | Verfahren zum thermischen Beschichten von Flächen eines Innenraumes, insbesondere von Zylinderlaufflächen eines Zylinderkurbelgehäuses einer Verbrennungskraftmaschine | |
EP1147239A1 (de) | Verfahren zum thermischen beschichten von flächen eines innenraumes, insbesondere von zylinderlaufflächen eines zylinderkurbelgehäuses einer verbrennungskraftmaschine | |
DE102004038173B4 (de) | Verfahren zum thermischen Spritzen von Zylinderlaufflächen bei mehrreihigen Motoren | |
DE102004038180A1 (de) | Verfahren zur Herstellung einer thermisch beschichteten Zylinderlauffläche mit einer Endfase | |
DE10314249B3 (de) | Verfahren zur Vorbereitung einer Oberfläche | |
DE19910577B4 (de) | Verfahren und Anordnung zum thermischen Beschichten von Flächen eines Innenraumes, insbesondere von Zylinderlaufflächen eines Zylinderkurbelgehäuses einer Verbrennungskraftmaschine | |
EP1153154B1 (de) | Verfahren und anordnung zum thermischen beschichten von flächen eines innenraumes, insbesondere von zylinderlaufflächen eines zylinderkurbelgehäuses einer verbrennungskraftmaschine | |
DE102004038175A1 (de) | Verfahren zur Vorbereitung von thermisch zuspritzenden Zylinderlaufflächen | |
DE102004038179A1 (de) | Verfahren zur Herstellung einer thermisch beschichteten Zylinderlauffläche mit einer Einfuhrfase |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
|
17P | Request for examination filed |
Effective date: 20010718 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
17Q | First examination report despatched |
Effective date: 20011109 |
|
APBN | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2E |
|
APBR | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3E |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
APBT | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9E |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20050510 |
|
R18R | Application refused (corrected) |
Effective date: 20050428 |
|
APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |