EP0195337A1 - Process for treating wear-resistant layers on tools or devices - Google Patents
Process for treating wear-resistant layers on tools or devices Download PDFInfo
- Publication number
- EP0195337A1 EP0195337A1 EP86103140A EP86103140A EP0195337A1 EP 0195337 A1 EP0195337 A1 EP 0195337A1 EP 86103140 A EP86103140 A EP 86103140A EP 86103140 A EP86103140 A EP 86103140A EP 0195337 A1 EP0195337 A1 EP 0195337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wear
- resistant layer
- resistant
- compression
- tool
- 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 13
- 239000002923 metal particle Substances 0.000 claims abstract description 10
- 238000003618 dip coating Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 8
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims description 2
- 229910003470 tongbaite Inorganic materials 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 241000985128 Cladium mariscus Species 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
Images
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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
Definitions
- the invention relates to a method for treating wear-resistant layers on tools or devices, in particular their work surfaces, the wear-resistant layers being applied by dip coating and preferably having hard metal particles.
- the object of the present invention is therefore to provide a method with which a smooth surface and desired contours and tolerances on the wear-resistant layer or work surface can be achieved inexpensively and simply.
- the object of the invention is achieved in that the wear-resistant layer is compressed or deformed in the heated state.
- the compression or shaping is preferably carried out after the dip coating when the wear-resistant surface is still in the melt state or is still heated to such an extent that plastic deformation is possible with low forces.
- the compression and / or shaping is carried out by means of a device whose shape corresponds to the desired contour of the wear-resistant layer or the tool.
- the shape can be cooled or continuously cooled by suitable and known cooling devices, so that deterrence occurs during compression or shaping the wear-resistant layer or the surface of the wear-resistant layer takes place, which results in an improved structure and a finer texture.
- the refinement of the smoothness in the wear-resistant layer results in a higher wear resistance with abrasive stress.
- a further improvement of the wear-resistant layer or of the working surface is achieved by the method steps according to claim 6, because the hard metal particles present on the surface of the shape of the device, which preferably consist of tungsten carbide and / or chromium carbide, have a targeted surface the wear-resistant layer, i.e. wherever they are desired.
- the measures according to claim 6 can reduce or even completely omit the hard metal particles in the melt into which the tools or devices are immersed , because the hard metal particles are embedded in the wear-resistant layer during shaping.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zum Behandeln von verschleißfesten Schichten an Werkzeugen oder Vorrichtungen, insbesondere deren Arbeitsflächen, wobei die verschließfesten Schichten durch Tauchbeschichtung aufgebracht sind und vorzugsweise Hartmetallteilchen aufweisen.The invention relates to a method for treating wear-resistant layers on tools or devices, in particular their work surfaces, the wear-resistant layers being applied by dip coating and preferably having hard metal particles.
Es ist bekannt (europäische Patentanmeldung 108 877), die Tauchbeschichtung in einem metallischen Schmelzbad vorzunehmen, dem Hartmetalltielchen in solchem Umfang zugesetzt sind, daß ein nicht unbeachtlicher Teil der Hartmetallteilchen nicht in Lösung geht Die nach dieser Patentanmeldung beschichteten Werkzeuge und Vorrichtungen weisen eine sehr verschleißfeste Arbeitsfläche auf und eignen sich daher für die verschiedensten Einsatzfälle. Es hat sich jedoch gezeigt, daß diese Arbeitsflächen eine verhältnismäßig rauhe Oberfläche aufweisen und darüberhinaus nicht die für viele Anwendungsfälle erwünschte Kontur besitzen. Zwar läßt sich die Oberfläche und auch eine gewünschte Kontur durch Schleifen glätten bzw. herstellen, diese Schleifarbiet ist jedoch teuer und umständlich.It is known (European patent application 108 877) to carry out the dip coating in a metallic molten bath to which hard metal particles have been added to such an extent that a not inconsiderable part of the hard metal particles does not dissolve. The tools and devices coated according to this patent application have a very wear-resistant working surface and are therefore suitable for a wide variety of applications. However, it has been shown that these work surfaces have a relatively rough surface and, moreover, do not have the contour desired for many applications. Although the surface and also a desired contour can be smoothed or produced by grinding, this grinding area is expensive and cumbersome.
Aufgabe der vorliegenden Erfindung ist es daher ein Verfahren zur Verfügung zu stellen, mit dem kostengünstig und einfach eine glatte Oberläche und gewünschte Konturen und Toleranzen an der verschleißfesten Schicht bzw. Arbeitsfläche erzielt werden kann. Die Aufgabe der Erfindung wird dadurch gelöst daß die verschleißfeste Schicht in erwärmten Zustand verdichtet bzw. verformt wird. Die Verdichtung bzw. Formgebung erfolgt bevorzugt im Anschluß an die Tauchbeschichtung dann, wenn die verschleißfeste Oberfläche sich noch im Schmelzzustand befindet bzw. noch soweit erwärmt ist, daß eine plastische Verformung mit geringen Kräften möglich ist Es ist aber auch möglich, die verschleißfeste Schicht und ggf. das Werkzeug bzw. die Vorrichtung nachträglich bis zum Schmelzzustand oder soweit zu erwärmen, daß danach eine plastische Verdichtung bzw. Verformung zumindest der Oberfläche der verschleißfesten Schicht möglich ist Durch diese Verfahrensschritte ist es in vorteilhafter Weise möglich, eine glatte Oberfläche und eine genaue Beschichtungsdicke zu erreichen.The object of the present invention is therefore to provide a method with which a smooth surface and desired contours and tolerances on the wear-resistant layer or work surface can be achieved inexpensively and simply. The object of the invention is achieved in that the wear-resistant layer is compressed or deformed in the heated state. The compression or shaping is preferably carried out after the dip coating when the wear-resistant surface is still in the melt state or is still heated to such an extent that plastic deformation is possible with low forces. However, it is also possible to coat the wear-resistant layer and, if necessary, to subsequently heat the tool or the device to the melting state or to such an extent that plastic compaction or deformation of at least the surface of the wear-resistant layer is then possible. These process steps advantageously make it possible to obtain a smooth surface and a precise coating thickness to reach.
Erfindungsgemäß erfolgt die Verdichtung und/oder Formgebung mittels einer Vorrichtung deren Form der gewünschten Kontur der verschleißfesten Schicht bzw. des Werkzeuges entspricht Die Form kann dabei gekühlt sein bzw. durch geeignete und bekannte Kühlvorrichtungen laufend gekühlt werden, so daß beim Verdichten bzw. Formgeben eine Abschreckung der verschließfesten Schicht bzw. der Oberfläche der verschließfesten Schicht erfolgt, wodurch eine Gefügeverbesserung und eine feinere Textur bewirkt wird. Die Verfeinerung der Kömigkeit in der verschließfesten Schicht bewirkt eine höhere Verschleißfestigkeit bei abrassiver Beanspruchung.According to the invention, the compression and / or shaping is carried out by means of a device whose shape corresponds to the desired contour of the wear-resistant layer or the tool. The shape can be cooled or continuously cooled by suitable and known cooling devices, so that deterrence occurs during compression or shaping the wear-resistant layer or the surface of the wear-resistant layer takes place, which results in an improved structure and a finer texture. The refinement of the smoothness in the wear-resistant layer results in a higher wear resistance with abrasive stress.
Eine weitere Verbesserung der verschließfesten Schicht bzw. der Arbeitsfläche erfolgt durch die Verfahrensschritte nach Anspruch 6, weil dadurch die an der Oberfläche der Form der Vorrichtung vorliegenden Hartmetalltielchen, die vorzugsweise aus Wolfram-Karbid und/oder Chrom-Karbid bestehen, eine gezielt in der Oberfläche der verschleißfesten Schicht angelagert werden, also dort, wo sie erwünscht sind.A further improvement of the wear-resistant layer or of the working surface is achieved by the method steps according to claim 6, because the hard metal particles present on the surface of the shape of the device, which preferably consist of tungsten carbide and / or chromium carbide, have a targeted surface the wear-resistant layer, i.e. wherever they are desired.
Es sei darauf hingewiesen, daß je nach Einsatz der Werkzeuge und je nach Form der verschleißfesten Oberfläche durch die Maßnahmen nach Patentanspruch 6 eine Verringerung bzw. sogar ein vollständiges Weglassen der Hartmetallteilchen in der Schmelze, in die die Werkzeuge bzw. Vorrichtungen getaucht werden, erfolgen kann, da die Hartmetallteilchen gezielt beim Formgeben in die verschleißfeste Schicht eingebettet werden.It should be noted that depending on the use of the tools and the shape of the wear-resistant surface, the measures according to claim 6 can reduce or even completely omit the hard metal particles in the melt into which the tools or devices are immersed , because the hard metal particles are embedded in the wear-resistant layer during shaping.
Zur weiteren Erläuterung der Erfindung wird auf die Zeichnung verwiesen. Dabei zeigen:
- Fig. 1 ein Werkzeug t, dessen Schneide aus einer verschleißiesten Schicht besteht Die Schneide wurde durch Verdichten der verschleißfesten Schicht in der Form 2 gemäß
- Fig. 2 hergestellt Fig. 3 zeigt einen Schnitt durch das Werkzeug I gemäß Fig. 1 und läßt dadurch den Gefügeaufbau erkennen.
- 1 shows a tool t, the cutting edge of which consists of a wear-resistant layer
- Fig. 2 produced. Fig. 3 shows a section through the tool I according to Fig. 1 and thereby reveals the structure.
Claims (8)
dadurch gekennzeichnet, daß die verschleißfesten Schichten in erwärmten Zustand verdichtet bzw. verformt werden.1. Method for treating wear-resistant layers on tools or devices, in particular their work surfaces, the wear-resistant layers being applied by dip coating and preferably having hard metal particles,
characterized in that the wear-resistant layers are compressed or deformed in the heated state.
dadurch gekennzeichnet, daß die Verdichtung bzw. Verformung im Anschluß an die Tauchbeschichtung bei noch - schmelzflüssiger bzw. noch plastisch verformbarer verschleißfester Schicht erfolgt2. The method according to claim 1,
characterized in that the compression or deformation takes place after the dip coating with a still molten or plastically deformable wear-resistant layer
dadurch gekennzeichnet, daß die verschleißfesten Schichten und ggf. die Werkzeuge und Vorrichtungen nachträglich bis zum Schmeizzustand bzw. breiigem Zustand oder soweit erwärmt werden, daß danach eine plastische Verdichtung bzw. Formgebung zumindest der Oberfläche der verschleißfesten Schicht erfolgen kann.3. The method according to claim 1,
characterized in that the wear-resistant layers and, if appropriate, the tools and devices are subsequently heated to the melted or pulpy state or to such an extent that thereafter a plastic compaction or shaping can take place at least on the surface of the wear-resistant layer.
dadurch gekennzeichnet, daß die verschleißfeste Schicht durch Tauchen des Werkzeuges (1) oder Vorrichtung in eine Metallschmelze, in der Hartmetallteilchen vorgesehen sind, aufgebracht wird und daß zumindest die Oberfläche der verschleißfesten Schicht im schmelzflüssigen bzw. hinreichend erwärmten Zustand durch einen Verdichtungs-und/oder Formgebungsprozeß geglättet wird.7. Tool or device with a metallic base body on which a wear-resistant layer is attached as a work surface,
characterized in that the wear-resistant layer is applied by dipping the tool (1) or device into a molten metal in which hard metal particles are provided, and in that at least the surface of the wear-resistant layer in the molten or sufficiently heated state by means of a compression and / or Shaping process is smoothed.
dadurch gekennzeichnet, daß der Verdichtungs-und/oder Formgebungsprozeß nach einem der vorstehenden Verfahrensansprüche erfolgt ist8. Tool according to claim 7,
characterized in that the compression and / or shaping process was carried out according to one of the preceding method claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86103140T ATE47430T1 (en) | 1985-03-11 | 1986-03-08 | PROCESS FOR TREATMENT OF WEAR RESISTANT COATINGS ON TOOLS OR JIGS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853508602 DE3508602A1 (en) | 1985-03-11 | 1985-03-11 | METHOD FOR TREATING WEAR-RESISTANT LAYERS ON TOOLS OR DEVICES |
| DE3508602 | 1985-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0195337A1 true EP0195337A1 (en) | 1986-09-24 |
| EP0195337B1 EP0195337B1 (en) | 1989-10-18 |
Family
ID=6264827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86103140A Expired EP0195337B1 (en) | 1985-03-11 | 1986-03-08 | Process for treating wear-resistant layers on tools or devices |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0195337B1 (en) |
| AT (1) | ATE47430T1 (en) |
| DE (2) | DE3508602A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2528521A1 (en) * | 1974-06-28 | 1976-01-15 | Int Nickel Ltd | METALLIC CARRIER PLATING METHOD |
| US4150178A (en) * | 1977-04-20 | 1979-04-17 | Toyo Kogyo Co., Ltd. | Aluminum diffusion layer forming method |
| DE2831207A1 (en) * | 1978-07-15 | 1980-01-24 | Goetze Ag | Wear and/or corrosion resistant coatings for machine parts - applied by friction welding, and suitable for coating piston rings with molybdenum |
| DE2927469A1 (en) * | 1979-07-06 | 1981-01-22 | Material Sciences Corp | Chromising of ferrous substrates in molten lead bath - using low chromium content to reduce roughness and porosity of coating |
| EP0108877A1 (en) * | 1982-09-16 | 1984-05-23 | Rabewerk Heinrich Clausing | Method of applying protective coatings to the surfaces of tools and devices |
| WO1985000386A1 (en) * | 1983-07-07 | 1985-01-31 | Inland Steel Company | Diffusion treated hot-dip aluminum coated steel and method or treating |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE892993C (en) * | 1942-04-22 | 1953-10-12 | Eisen & Stahlind Ag | Process for the production of thin sheets and shaped bodies coated with a hard metal layer |
| AT163214B (en) * | 1946-02-12 | 1949-06-10 | Plansee Metallwerk | Method of coating steel objects |
| US2755199A (en) * | 1951-02-19 | 1956-07-17 | Kellogg M W Co | Hard coated composite and method of forming |
| SE8305712L (en) * | 1983-02-28 | 1984-08-29 | Imp Clevite Inc | APPLY TO APPLY A NOTING AND / OR CORROSION-RESISTANT OVERVIEW ON A FORM WITH THE IRREGULAR SURFACE |
-
1985
- 1985-03-11 DE DE19853508602 patent/DE3508602A1/en not_active Withdrawn
-
1986
- 1986-03-08 EP EP86103140A patent/EP0195337B1/en not_active Expired
- 1986-03-08 DE DE8686103140T patent/DE3666464D1/en not_active Expired
- 1986-03-08 AT AT86103140T patent/ATE47430T1/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2528521A1 (en) * | 1974-06-28 | 1976-01-15 | Int Nickel Ltd | METALLIC CARRIER PLATING METHOD |
| US4150178A (en) * | 1977-04-20 | 1979-04-17 | Toyo Kogyo Co., Ltd. | Aluminum diffusion layer forming method |
| DE2831207A1 (en) * | 1978-07-15 | 1980-01-24 | Goetze Ag | Wear and/or corrosion resistant coatings for machine parts - applied by friction welding, and suitable for coating piston rings with molybdenum |
| DE2927469A1 (en) * | 1979-07-06 | 1981-01-22 | Material Sciences Corp | Chromising of ferrous substrates in molten lead bath - using low chromium content to reduce roughness and porosity of coating |
| EP0108877A1 (en) * | 1982-09-16 | 1984-05-23 | Rabewerk Heinrich Clausing | Method of applying protective coatings to the surfaces of tools and devices |
| WO1985000386A1 (en) * | 1983-07-07 | 1985-01-31 | Inland Steel Company | Diffusion treated hot-dip aluminum coated steel and method or treating |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0195337B1 (en) | 1989-10-18 |
| DE3666464D1 (en) | 1989-11-23 |
| ATE47430T1 (en) | 1989-11-15 |
| DE3508602A1 (en) | 1986-09-11 |
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