EP0108877B1 - Procédé d'application de revêtements résistant à l'usure sur des surfaces de travail d'outils - Google Patents

Procédé d'application de revêtements résistant à l'usure sur des surfaces de travail d'outils Download PDF

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Publication number
EP0108877B1
EP0108877B1 EP83108620A EP83108620A EP0108877B1 EP 0108877 B1 EP0108877 B1 EP 0108877B1 EP 83108620 A EP83108620 A EP 83108620A EP 83108620 A EP83108620 A EP 83108620A EP 0108877 B1 EP0108877 B1 EP 0108877B1
Authority
EP
European Patent Office
Prior art keywords
wear
hard metal
metal particles
tools
weight
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.)
Expired
Application number
EP83108620A
Other languages
German (de)
English (en)
Other versions
EP0108877A1 (fr
Inventor
Atilla Dr.Ing. Akyol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RABEWERK GMBH + CO. TE BAD ESSEN, BONDSREPUBLIEK D
Original Assignee
Rabewerk Heinrich Clausing
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rabewerk Heinrich Clausing filed Critical Rabewerk Heinrich Clausing
Priority to AT83108620T priority Critical patent/ATE36176T1/de
Publication of EP0108877A1 publication Critical patent/EP0108877A1/fr
Application granted granted Critical
Publication of EP0108877B1 publication Critical patent/EP0108877B1/fr
Expired legal-status Critical Current

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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material

Definitions

  • the invention relates to a method for applying wear-resistant layers on the work surfaces of tools and devices, in particular soil working tools, which are exposed to the wear.
  • wear-resistant layers are applied e.g. by welding using hard metal electrodes, by application with the help of plasma welding or by spraying (flame spraying) self-flowing metal powder.
  • these known methods for applying wear-resistant layers are all complex, and when these layers are welded on with the aid of hard metal electrodes it is added that these layers are sensitive to brittleness, cracking and breakage.
  • the hard metal layers are applied with the flame spraying of self-flowing metal powder, there is a great loss of material, and this method is equally complex. This also applies to plasma welding.
  • these methods are characterized by low cost-effectiveness when large work surfaces are to be provided with a wear-resistant coating, as is the case, for. B. is the case with plowshares or other tillage tools.
  • the treated surface should be as smooth as possible so that there is little resistance to the ground.
  • the latter generally requires post-treatment in the known method, which, since the layers are hard, is labor-intensive and time-consuming.
  • FR-A-1 126 103 a method for the coating of turbine parts is known, which are to be given increased heat resistance by the coating.
  • parts manufactured in the powder metallurgical process with a relatively large surface porosity are immersed in an aluminum melt with zirconium.
  • a method for the coating of parts exposed to wear is known from US-A-3112212.
  • the parts in the form of a strip are drawn through a molten bath made of an aluminum-zinc or aluminum-zinc-magnesium alloy with hard metal particles.
  • the coating must therefore be bendable, since it is applied to a tape, which already speaks for its low wear resistance.
  • the invention has for its object to propose a method for applying wear-resistant layers on tools and devices, which is also suitable for large-area application of smooth layers, which can be carried out with little expenditure of time and money, and for achieving smooth surfaces no after-treatment required. Another object is to make the process feasible at relatively low temperatures with the associated advantages.
  • the method according to the invention is thus characterized in that the surfaces of the tools to be coated are immersed in a molten metal 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. Furthermore, the base alloy boron and / or silicon is added to lower the melting point.
  • a layer is deposited on the surfaces, which can be up to 3 mm in one operation, this layer depending on the molten metal and the temperature of the molten bath.
  • This layer, which is deposited on the work surfaces has a smooth surface on the one hand and, on the other hand, a wear resistance which is three times the usual, in particular for ploughshare.
  • An alloy based on nickel and iron is particularly suitable as the metal alloy to which hard metal particles are added.
  • This molten metal z. B. boron and silicon in amounts up to 9%, so that the melting temperature of this melt is lowered. It is thus easy to obtain a liquidus temperature of the melt of 1,100 ° C for a metal melt based on nickel and a liquidus temperature of 1,250 ° C for a metal alloy based on iron.
  • the hard metal particles which can consist of tungsten, chromium or else mixed carbides of molybdenum, titanium and tantalum carbides, are then introduced into this metal melt based on nickel or iron.
  • the amount of carbides added depends on the desired wear resistance of the applied layers and can advantageously be up to 45% of the weight of the molten metal.
  • tungsten carbide 10-20% chromium carbide and 7-8% molybdenum, titanium and tantalum mixed carbides are added to this alloy.
  • the dipping process can be repeated a further or any number of times after the first applied layer has cooled.
  • the layers applied not only have the advantage that they are smooth and therefore do not require any post-treatment, but also the advantage that they can still be forged so that the tools can then be deformed.
  • the molten bath temperature As far as the molten bath temperature is concerned, it will be at least 100 ° higher than the liquidus temperature of the molten metal, whereby it has proven advantageous to preheat the tools before the dipping process, since then a better connection is formed between the surface of the tool and the applied layer. Furthermore, for a good bond, it is a prerequisite that the dipped tools are scale-free and rustproof, which can be done in a simple manner by pretreating the tools with sandblasting.
  • a metal melt based on iron has the advantage that it is cheaper and has a better connection with the metal of the tool.
  • this melt also has the disadvantage that it tends to crack.
  • a nickel-based melt has the advantage that it requires a lower melt bath temperature and shows a higher wear resistance than the iron-based melt.
  • such a melt is more expensive in terms of cost.
  • the tool can also be provided with a hard metal layer beforehand, which e.g. can be done by immersing the tool in a hard metal powder or by applying the hard metal particles using a magnetic and / or electrostatic method. It is also conceivable to use the vortex sintering method for applying the hard metal particles to the tool surfaces, it being possible for a corresponding binder to be applied to the tool surfaces. The tools are then immersed in the molten metal.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Chemically Coating (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (12)

1. Procédé d'application de couches résistant à l'usure sur des surfaces actives d'outils et de dispositifs soumises à l'usure, en particulier d'outils de travail du sol, caractérisé en ce que l'application de la couche résistant à l'usure est faite dans un bain de fusion constitué d'un alliage métallique fondu à base de nickel auquel sont ajoutées des particules de métal dur dans une proportion, en poids par rapport à l'alliage de base, de 5 à 15% de carbure de tungstène et 10 à 20% de carbure de chrome, de sorte qu'une partie notable des particules de métal dur ne passe pas en solution.
2. Procédé selon la revendication 1, caractérisé en ce que l'alliage à base de nickel a la composition pondérale suivante:
Ni 70 à 80%
Cr 10 à 20%
B 4,0 à 4,5%
Si 4,0 à 4,5%
le reste étant des impuretés.
3. Procédé d'application de couches résistant à l'usure sur des surfaces actives d'outils et de dispositifs, en particulier d'outils de travail du sol, soumises à l'usure, caractérisé en ce que l'application de la couche résistant à l'usure est faite dans un bain de fusion constitué d'un alliage métallique fondu à base de fer auquel sont ajoutées des particules de métal dur dans une proportion, en poids par rapport à l'alliage de base, de
10 à 15% de carbure de tungstène,
10 à 20% de carbure de chrome et
7 à 8% de carbures mixtes de Mo, Ti et Ta, ces quantités étant telles qu'une partie notable des particules de métal dur ne passe pas en solution.
4. Procédé selon la revendication 3, caractérisé en ce qu'on utilise un alliage à base de fer ayant la composition pondérale suivante:
Fe 90%
B 4,0 à 4,5%
Si 4,0 à 4,5%
le reste étant des impuretés.
5. Procédé selon rune des revendications 1 à 4, caractérisé en ce que du bore et/ou du silicium sont ajoutés à l'alliage de base pour abaisser le point de fusion.
6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'avant d'immerger les pièces à revêtir, on sable leurs surfaces.
7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'en plus, avant l'immersion, on applique des particules de métal dur sur les surfaces à traiter.
8. Procédé selon la revendication 7, caractérisé en ce que les particules de métal dur sont appliquées sous forme de grains, de poudre ou de bouillie.
9. Procédé selon l'une des revendications 7 et 8, caractérisé en ce que l'application est faite, par voie magnétique et/ou électrostatique, éventuellement avec addition de liants.
10. Procédé selon l'une des revendications 7 et 8, caractérisé en ce qu'avant d'immerger la pièce à traiter, on la plonge dans une poudre.
11. Procédé selon la revendication 10, caractérisé en ce qu'on applique les particules de métal dur par revêtement en lit fluidisé.
12. Procédé selon l'une des revendications 1 à 11, caractérisé en ce qu'on chauffe les outils et les dispositifs avant de les immerger.
EP83108620A 1982-09-16 1983-09-01 Procédé d'application de revêtements résistant à l'usure sur des surfaces de travail d'outils Expired EP0108877B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83108620T ATE36176T1 (de) 1982-09-16 1983-09-01 Verfahren zum aufbringen verschleissfester schichten auf arbeitsflaechen von werkzeugen und vorrichtungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3234310 1982-09-16
DE3234310 1982-09-16

Publications (2)

Publication Number Publication Date
EP0108877A1 EP0108877A1 (fr) 1984-05-23
EP0108877B1 true EP0108877B1 (fr) 1988-08-03

Family

ID=6173348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108620A Expired EP0108877B1 (fr) 1982-09-16 1983-09-01 Procédé d'application de revêtements résistant à l'usure sur des surfaces de travail d'outils

Country Status (4)

Country Link
US (1) US4510183A (fr)
EP (1) EP0108877B1 (fr)
AT (1) ATE36176T1 (fr)
DE (1) DE3377584D1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508603A1 (de) * 1985-03-11 1986-09-11 Atilla Dipl.-Chem. Dr.-Ing. 4515 Bad Essen Akyol Verfahren zum befestigen von hartmetallplatten an werkzeugen, verschleissteilen usw.
DE3508602A1 (de) * 1985-03-11 1986-09-11 Atilla Dipl.-Chem. Dr.-Ing. 4515 Bad Essen Akyol Verfahren zum behandeln von verschleissfesten schichten an werkzeugen oder vorrichtungen
DE3842673A1 (de) * 1988-12-19 1990-06-21 Atilla Dipl Chem Dr Ing Akyol Verfahren zur herstellung verschleissfester schichten
FR2696760B1 (fr) * 1992-10-09 1994-11-04 Alsthom Gec Revêtement pour parties frottantes par rotation d'une pièce en acier matensitique.
JPH0738169U (ja) * 1993-12-17 1995-07-14 シチズン時計株式会社 編機用部品
US6689489B2 (en) 1999-10-07 2004-02-10 Isg Technologies, Inc. Composition for controlling spangle size, a coated steel product, and a coating method
US7238430B2 (en) * 1999-10-07 2007-07-03 Isg Technologies Inc. Composition for controlling spangle size, a coated steel product, and a coating method
WO2001027343A1 (fr) 1999-10-07 2001-04-19 Bethlehem Steel Corporation Composition d'enrobage pour produit en acier; produit en acier enrobe, et procede d'enrobage d'un produit en acier
IT1313883B1 (it) * 1999-12-17 2002-09-24 Edison Termoelettrica Spa Articolo a base di una lega metallica di nichel cromo ed elementimetalloidi includente precipitati microcristallini,lega metallica
EP1346621A1 (fr) 2002-03-22 2003-09-24 Rabe Agrarsysteme GmbH & Co. KG Dent pour machine de travail du sol
JP2004359998A (ja) * 2003-06-04 2004-12-24 Hitachi Ltd 化合物粒子分散合金層を有する金属部材の製造方法及び摺動部材
US20050072682A1 (en) * 2003-10-07 2005-04-07 Kenneth Lore Process and apparatus for coating components of a shopping cart and a product
US7413769B2 (en) * 2005-07-01 2008-08-19 Mcdevitt Erin T Process for applying a metallic coating, an intermediate coated product, and a finish coated product
CN105917759A (zh) * 2016-07-10 2016-09-07 石河子大学 一种耐磨、耐腐蚀铧式犁犁体曲面
CN112941511A (zh) * 2021-02-01 2021-06-11 南京信息职业技术学院 一种汽车车身钢板表面耐磨复合涂层的制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007664A1 (fr) * 1978-08-02 1980-02-06 Metallgesellschaft Ag Procédé de revêtement et de soudure d'articles à l'aide d'alliages de métaux durs

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US2611710A (en) * 1949-12-17 1952-09-23 Herbert J Woock Composition for hard facing
FR1126103A (fr) * 1954-06-17 1956-11-15 Birmingham Small Arms Co Ltd Objet en acier ou en alliage résistant à la chaleur
GB833000A (en) * 1955-12-01 1960-04-21 Blaupunkt Werke Gmbh Improvements in or relating to printed circuits
BE580853A (fr) * 1958-07-18
US3117845A (en) * 1960-04-27 1964-01-14 Bendix Corp Friction coated metal base
FR1328939A (fr) * 1962-03-19 1963-06-07 Inland Steel Co Revêtement à l'aluminium d'un support en métal ferreux
GB1095117A (en) * 1963-12-26 1967-12-13 Matsushita Electric Ind Co Ltd Method of making printed circuit board
GB1108018A (en) * 1964-07-31 1968-03-27 Euratom A process for welding composite metal-oxide materials such as sintered aluminium powder (s.a.p.)
GB1138897A (en) * 1966-08-26 1969-01-01 Paper Calmenson & Company Hard facing treatment of steel bodies
US3669850A (en) * 1969-07-18 1972-06-13 Cedo Draca Method for the production of abrasive brushing elements
US3986842A (en) * 1975-06-17 1976-10-19 Eutectic Corporation Multi-component metal coating consumable

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0007664A1 (fr) * 1978-08-02 1980-02-06 Metallgesellschaft Ag Procédé de revêtement et de soudure d'articles à l'aide d'alliages de métaux durs

Also Published As

Publication number Publication date
US4510183A (en) 1985-04-09
EP0108877A1 (fr) 1984-05-23
ATE36176T1 (de) 1988-08-15
DE3377584D1 (en) 1988-09-08

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