EP2171125A2 - Method of providing a coating - Google Patents
Method of providing a coatingInfo
- Publication number
- EP2171125A2 EP2171125A2 EP08751050A EP08751050A EP2171125A2 EP 2171125 A2 EP2171125 A2 EP 2171125A2 EP 08751050 A EP08751050 A EP 08751050A EP 08751050 A EP08751050 A EP 08751050A EP 2171125 A2 EP2171125 A2 EP 2171125A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- coating
- providing
- cobalt
- component
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
- C23C24/085—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/027—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
Definitions
- the present invention relates to a method for providing a coating on a surface.
- the object of the present invention is to provide a method for providing a coating on a surface having excellent quality.
- the method comprises the steps of providing a first Powder on the surface of the component, the heating of this first powder by arc heating, whereby a first layer is formed, the provision of a second powder on the first layer and the heating of this second layer by arc heating, whereby a second layer is formed, wherein the first Powder comprises nickel or nickel and cobalt, wherein the second powder comprises nickel and cobalt and wherein the proportion of cobalt in the first powder is lower than the proportion of cobalt in the second powder.
- tungsten carbide (WC) cobalt (Co) nickel (Ni) chromium (Cr) mixtures depend on the cobalt content in the alloy.
- tungsten carbide particles are first saturated with cobalt, and then at temperatures of 1150 0 C - 1200 0 C, a significant liquid phase compression takes a few minutes.
- isothermal sintering under arc heating it is possible to observe the structure and the crystallization of tungsten carbide particles on the component surface of the sintered powder and on the electrode, for example a roller electrode.
- a cobalt phase green coating is provided, forming the cutters of the specified size and shape.
- the first powder does not comprise cobalt.
- cobalt it is also possible for cobalt to be present in the first powder, for example in a proportion of from 1 to 5% by weight, and preferably from 2 to 3% by weight.
- the cobalt content in the second powder may be 10 to 14% by weight, and preferably 11 to 13% by weight. In any case, the cobalt content in the second powder according to the invention is higher than the cobalt content in the first powder.
- the first powder, which is distributed on the surface to be coated, and / or the second powder, which is distributed on the first powder contains one or more carbides and preferably the same type of carbides.
- the first powder and / or the second powder contains one or more hard-alloyed powders and can preferably be formed from different types of hard-alloyed powders.
- the powder comprises tungsten carbides and / or titanium carbides and / or chromium carbides.
- the method of arc heating may be performed by applying an electric current, preferably an alternating current, between the surface and an electrode.
- an electric current preferably an alternating current
- the surface is represented by an electrode, and the arc is provided between this electrode and the following electrode.
- alternating current is conducted together with metal powder through the contact zone between the electrode and the component or its surface.
- the electrode to be applied in the method of the present invention may be a rotating roller removed from the formed powder coating obtained by the method of arc heating.
- the roll is pressed onto the surface of the component, for example by use of a spring or other appropriate means.
- the powder is provided in the space between the roll and the surface of the component.
- the first and / or the second powder comprises C and / or Si and / or B and / or Fe and / or Cr and / or tungsten carbide.
- C and / or Si and / or B and / or Fe and / or Cr and / or tungsten carbide are examples which are not restrictive of the composition of the first powder and the second powder, all numbers being by weight.
- the present invention is further directed to devices having at least one surface provided with a coating, wherein the coating is prepared by a process according to any one of claims 1 to 14.
- the surface with the coating may have cutting features. This can be a cutting edge or other functional surface that has to provide certain properties.
- the device is, for example, a composite profile instrument which may have a curved shape of the work surface, or a material-processing instrument or a stamp or other tool or instrument to be provided with the desired properties. Examples of the devices according to the invention are devices for processing of composite surfaces of marble and granite, roller tracks of rolling mills, cutting wheel saws, milling tools, milling wheels for stone grinding, etc.
- FIG. 1 shows schematically the arrangement of the component (detail) whose surface is to be coated, and the roller electrode.
- FIG. 2 is a schematic cross-sectional view through the arrangement of FIG. 1.
- the embodiment relates to the production of profile composite tools and instruments whose cutting edges are formed according to the invention in a two-stage process.
- a full metal coating made of a first powder is supplied to the surface of a component.
- the powder contains tungsten carbide and / or titanium carbide and / or chromium carbide and / or hard alloys and a mixture of nickel and cobalt in a small proportion.
- This powder is formed into a sheet by arc heating using a rotating roller which is an electrode.
- the other electrode is the component or its surface itself.
- Alternating current together with the first powder is passed through the contact zone between the roller and the surface of the component.
- the method involves incorporating the carbon steel functional surfaces through a rotating roller. Under training is understood In order that the powder is constantly gripped by the roller electrode, the roller slides along the entire surface of the component at the expense of linear feed or transverse table feed in turn. If the component is a rotating body, then the roller undergoes rotation from the rotating component mounted in a machine rotating spindle as shown in Figs.
- a powder having the same composition as the first composition but containing a higher proportion of the nickel and cobalt-containing mixture is fed to the first powder layer and then treated with arc heating as described above.
- the method of this embodiment provides abrasion resistant, wear resistant and corrosion resistant surfaces of, for example, devices such as stamps, profile composite stamping and / or material processing tools, instruments, etc.
- Figures 1 and 2 show the component (detail) 10, the surface of which is to be coated by applying the method according to the invention.
- an AC power source 20 that generates an AC current between the member 10 that is an electrode and a roller electrode 30 that is pressed against the surface of the member 10 by using the spring 40.
- the entire operation of providing powder while constantly conducting electric current and heating the heating / sintering zone accordingly is carried out both during the provision of the first layer and during the provision of the second layer.
- the powder 50 constantly runs out of a container through the component 10 and the roller electrode 30, which is pressed tightly against the component 10 by means of the spring 40. Powder enters the space between the component 10 and the roller electrode 30, is then pressed together and until the final Heating heated by the electric current. Electric power is passed through the component 10 and the roller 30.
- one of the electrodes is a component 10 and the other is the roller 30.
- the powder 50 is electrically conductive so that the current through the powder can flow between the electrodes.
- the roller electrode 30 constantly slides along the entire component surface by using a linear or transverse advance.
- the roller 30 can be provided with a drive device which provides the rotational movement of the roller 30. But it is also conceivable that the roller 30 receives its rotation from the rotating member 10 which is fixed in the spindle of a lathe, as shown in Figures 1 and 2.
- the powder 50 is constantly provided by the vibrating vessel conveyor 60 by a uniform flow.
- the powder that has not been supplied to the heating zone is collected and then redirected to the vibrating vessel conveyor 60
- the roller electrode 30 is a movable member which is pressed by means of, for example, a spring 40 to the component 10.
- the component (detail) 10 can be rotated by means of the roller 30 or the roller 30 can be rotated by means of the component 10.
- both the component 10 and the roller 30 are driven by a drive device.
- the roller 30 is compressed by a spring 40. During the transfer of electric current, corresponding powder heating is observed with simultaneous compression of the powder on the component surface.
- the roller 30 directly contacts the powder 50.
- the productivity of the technology decreases because, due to the fact that its attenuation angle at the tungsten carbide surface is zero, the optimum carrier for the tungsten carbide particles is cobalt. Without availability of cobalt, the process of component incorporation through the roll should be repeated.
- the cobalt content of the first powder is 1 to 5% by weight.
- the powder When sintering the second coating, the powder should comprise both cobalt and nickel to form a thick green coating, preferably from 1 to 3 mm, forming cut edges.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710035009 DE102007035009A1 (en) | 2007-07-26 | 2007-07-26 | Method for providing a coating |
PCT/IB2008/001347 WO2009013574A2 (en) | 2007-07-26 | 2008-05-26 | Method of providing a coating |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2171125A2 true EP2171125A2 (en) | 2010-04-07 |
Family
ID=39735216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08751050A Withdrawn EP2171125A2 (en) | 2007-07-26 | 2008-05-26 | Method of providing a coating |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2171125A2 (en) |
DE (1) | DE102007035009A1 (en) |
WO (1) | WO2009013574A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108342727A (en) * | 2018-03-01 | 2018-07-31 | 燕山大学 | A kind of laser strengthening method of straightening roll |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009008105B4 (en) * | 2009-02-09 | 2017-02-09 | Daimler Ag | Brake disc for a vehicle |
CN104444732B (en) * | 2014-12-01 | 2017-02-01 | 苏州默顿快速电梯有限公司 | Traction wheel for passenger elevator |
CN112207511B (en) * | 2020-09-17 | 2021-10-26 | 南京工程学院 | Short-flow manufacturing process for surface-hardened long-shaft forgings |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3749559A (en) | 1969-10-20 | 1973-07-31 | Ramsey Corp | Piston rings with coating impregnated with antifriction agent |
US4814236A (en) | 1987-06-22 | 1989-03-21 | Westinghouse Electric Corp. | Hardsurfaced power-generating turbine components and method of hardsurfacing metal substrates using a buttering layer |
JP3886394B2 (en) | 2002-02-25 | 2007-02-28 | 株式会社荏原製作所 | Covering material with corrosion resistance and wear resistance |
US20070269676A1 (en) | 2006-05-19 | 2007-11-22 | Singer Kevin M | Diffusion barrier layer and method of making the same, and wear resistant article with the diffusion barrier layer and method of making the same |
-
2007
- 2007-07-26 DE DE200710035009 patent/DE102007035009A1/en not_active Withdrawn
-
2008
- 2008-05-26 EP EP08751050A patent/EP2171125A2/en not_active Withdrawn
- 2008-05-26 WO PCT/IB2008/001347 patent/WO2009013574A2/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009013574A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108342727A (en) * | 2018-03-01 | 2018-07-31 | 燕山大学 | A kind of laser strengthening method of straightening roll |
Also Published As
Publication number | Publication date |
---|---|
WO2009013574A2 (en) | 2009-01-29 |
WO2009013574A3 (en) | 2010-03-25 |
DE102007035009A1 (en) | 2009-02-05 |
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Legal Events
Date | Code | Title | Description |
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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 |
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17P | Request for examination filed |
Effective date: 20100112 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
R17D | Deferred search report published (corrected) |
Effective date: 20100325 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C22C 29/08 20060101ALI20100409BHEP Ipc: B22F 3/105 20060101ALI20100409BHEP Ipc: C23C 30/00 20060101ALI20100409BHEP Ipc: C23C 28/02 20060101ALI20100409BHEP Ipc: C23C 24/10 20060101ALI20100409BHEP Ipc: C23C 24/08 20060101AFI20100409BHEP |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20130221 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20141202 |