CN111945158A - Composite treatment method for improving wear resistance of metal surface - Google Patents
Composite treatment method for improving wear resistance of metal surface Download PDFInfo
- Publication number
- CN111945158A CN111945158A CN202010807057.8A CN202010807057A CN111945158A CN 111945158 A CN111945158 A CN 111945158A CN 202010807057 A CN202010807057 A CN 202010807057A CN 111945158 A CN111945158 A CN 111945158A
- Authority
- CN
- China
- Prior art keywords
- sample block
- metal sample
- metal
- laser
- wear resistance
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 51
- 239000002184 metal Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000000151 deposition Methods 0.000 claims abstract description 29
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 230000008021 deposition Effects 0.000 claims abstract description 17
- 238000010892 electric spark Methods 0.000 claims abstract description 17
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000007772 electrode material Substances 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229910000531 Co alloy Inorganic materials 0.000 claims description 5
- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010330 laser marking Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 1
- 238000003672 processing method Methods 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 21
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010288 cold spraying Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000003466 welding Methods 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
Abstract
The invention discloses a composite processing method for improving the wear resistance of a metal surface, which comprises the steps of preparing micro pits with different sizes and different shapes on a metal sample block by adopting a laser processing mode on the prepared metal sample needing to be processed; finally, for the metal sample block processed by laser, an alloy coating with higher hardness is deposited on the surface of the metal sample block by adopting an electric spark deposition technology. The invention combines the surface texture method and the electric spark deposition method together, is applied to the metal surface to improve the surface performance, improves the wear resistance of the metal surface by the composite processing technology, not only can be applied to various aspects, but also prolongs the service life of parts with poor wear resistance, and simultaneously solves the problems of single process and poor performance.
Description
Technical Field
The invention relates to the technical field of metal material surface modification, in particular to a composite treatment method for improving the wear resistance of a metal surface.
Background
The application of the metal material relates to a plurality of fields of life and production, such as industry, agriculture, aviation and the like. The most common processing techniques of metal materials include casting, pressure processing and welding, and the formed materials are subjected to detection of the structure and performance defects by a proper detection method and then post-treatment to meet the use and performance requirements. The first step in the manufacture of any product is the selection of materials, the most common failure modes of which are wear, corrosion, fracture. Failure generally originates from the surface, and in order to improve the properties of the metal material, such as strength, hardness, rigidity, wear resistance, etc., the metal surface generally needs to be modified and strengthened.
Surface texture method: micro pits or micro bulges with different sizes and different shapes are obtained on the metal surface through various processes, and the bearing is lubricated by small fluid dynamic pressure to generate additional fluid dynamic pressure so as to improve the oil film bearing capacity; meanwhile, the pit-shaped micro texture can be used as a micro oil storage pool to provide lubricating oil for the surface of a friction pair, so that 'secondary lubrication' is realized; and abrasive particles in the operation process can be contained and captured, so that the abrasion of the abrasive particles is reduced, and the effects of reducing abrasion and resisting abrasion are achieved.
Electric spark deposition: the electric spark deposition technology is characterized in that high-energy electric energy is stored through a power supply, when an electrode material is in contact with a base material, spark discharge is generated at the frequency of 100-2000 Hz and a large amount of energy is released, the contact part of the electrode and a workpiece can reach the high temperature of 8000-25000 ℃ within 10-5-10-6 s, and meanwhile, the electrode material is melted, gasified or plasmatized, so that the electrode material is infiltrated to the surface of the workpiece to form an alloyed deposition layer. By replacing the electrode material with a material having a higher hardness, such as: tungsten, cobalt, tungsten-cobalt alloy, tungsten-cobalt carbide alloy, nickel-based alloy and the like are deposited on the surface of the substrate by utilizing the spark deposition technology to form a strengthening layer, and the hardness of the strengthening layer is several times higher than that of the substrate material, so that the effect of improving the wear resistance is achieved.
At present, the metal surface is subjected to surface modification treatment by various process methods to improve the properties of the metal surface, such as: thermal spraying, cold spraying, coating deposition, thermal treatment, surface texturing, and the like. Each process has its own advantages, but the performance is improved by a little single process, and the effect is not ideal.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a composite treatment method for improving the wear resistance of the metal surface, and the effect of improving the wear resistance of the metal surface is realized by utilizing a mode of combining a surface texture method and an electric spark deposition method.
The invention adopts the technical scheme that a composite treatment method for improving the wear resistance of a metal surface comprises the following steps:
(1) preparing a metal sample to be processed, and preparing micro pits with different sizes and different shapes on a metal sample block by adopting a laser processing mode;
(2) for the metal sample block processed by laser, an alloy coating with higher hardness is deposited on the surface of the metal sample block by adopting an electric spark deposition technology.
Further, the step (1) adopts the laser processing technology to prepare the micro-pits on the surface of the metal block, and comprises the following steps:
s1, grinding the surface of the metal sample block by utilizing SiC water sand paper of 400#, 600#, 800#, 1200#, 2000 #;
s2, cleaning and drying the metal sample block to remove surface impurities;
s3, drawing by using CAD software, drawing figures with different sizes and shapes to be processed, and storing the figures in a DXF format;
s4, the drawn pattern is introduced into a laser marking machine, laser processing parameters are set, and various micro-pits are prepared on the metal sample block to obtain a metal sample block with a surface texture.
Further, the selection of the electrode material in the step (2) is that some alloy materials with higher hardness, strength and good wear resistance are selected: tungsten, cobalt, tungsten cobalt alloys, tungsten carbide cobalt alloys, nickel based alloys, and the like.
Further, the step (2) is to deposit an alloy coating with higher hardness on the surface of the metal sample block which is processed by laser by adopting an electric spark deposition technology, and the steps are as follows:
y1, cleaning and drying the metal sample block processed by the laser to remove surface impurities;
y2, selecting a good electrode material, and installing and fixing the good electrode material on an electric spark deposition machine tool;
y3, adjusting the processing program and technological parameters of the electric spark deposition machine tool, and repeatedly and continuously processing;
y4, repeatedly and continuously depositing along the surface of the metal sample block during the first processing;
y5, rotating the tool electrode by 90 degrees during the second processing, and then repeatedly and continuously depositing on the surface of the metal sample block;
and slightly polishing the metal sample block after the composite treatment to remove some burrs on the surface and reduce the surface roughness of the metal sample block.
Compared with the prior art, the invention has the following beneficial effects:
the composite processing technology improves the wear resistance of the metal surface, can be applied to various aspects, prolongs the service life of parts with poor wear resistance, and solves the problems of single process and poor performance.
Drawings
FIG. 1 is a flow chart of the compounding process of the present invention.
FIG. 2 is a schematic view of the laser machining of a metal coupon to achieve surface texturing in accordance with the present invention.
FIG. 3 is a schematic view of the processing of an EDM alloy coating according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, and the present invention will be further described in detail with reference to specific embodiments in order to make the features, advantages and application of the present invention more clear and understandable.
The invention takes a specific metal sample block as an example, the surface texture method in the invention can better improve the lubricity and wear resistance of a friction pair on the surface of metal, so the preparation of the surface texture is carried out by a laser processing mode; the electric spark deposition method has the characteristics of simple operation, low cost and environmental protection, and can obtain the alloy coating with micron-sized thickness.
The invention takes an aluminum metal sample block as an example, and aluminum alloy thereof are widely applied to the piston of an internal combustion engine and other fields due to the characteristics of small density, high specific strength, easy forming and the like. However, the performance of aluminum and its alloy is greatly affected by the defects of small hardness, poor wear resistance, high friction coefficient and the like, so that the improvement of the tribological performance is of great significance.
The invention discloses a composite processing method for improving the wear resistance of an aluminum surface by taking an aluminum metal sample block as an example, which comprises the following steps:
(1) preparing an aluminum metal sample block to be processed, and preparing micro pits with different sizes and shapes on the aluminum metal sample block by adopting a laser processing mode, wherein the prepared micro pits are all in micron-sized sizes. Since the laser surface microtexturing expands the range of hydrodynamic lubrication conditions in terms of load and sliding speed, the laser surface microtexturing generally reduces the coefficient of friction compared to a non-textured surface with surface roughness, and the laser surface microtexturing can reduce friction of tribological components in boundary lubrication conditions.
(2) For an aluminum metal coupon that has been treated by laser machining, an alloy coating having a relatively high hardness is again deposited on the aluminum surface by employing an electro-spark deposition technique. In this case, the electrode material for electric spark deposition is made of hard alloy, which has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc., and particularly, the high hardness and wear resistance of the hard alloy are basically kept unchanged even at a temperature of 500 ℃.
Further, the step (1) of preparing the micro-pits on the surface of the aluminum metal block by adopting a laser processing technology comprises the following steps:
s1, grinding the surface of the aluminum metal sample block by utilizing SiC water sand paper of 400#, 600#, 800#, 1200#, 2000 #;
s2, cleaning and drying the aluminum metal sample block to remove surface impurities;
s3, drawing by using CAD software, drawing a circular graph with the micron order of hundreds of microns, and storing the circular graph in a DXF format;
s4, guiding the drawn pattern into a laser marking machine, setting laser processing parameters, and preparing various micro-pits on the aluminum metal sample block to obtain the aluminum metal sample block with surface texture.
Further, the step (2) is to deposit a hard alloy coating with higher hardness on the aluminum surface of the aluminum sample block which is processed by the laser by adopting an electric spark deposition technology, and the steps are as follows:
y1, cleaning and drying the laser processed aluminum metal sample block to remove surface impurities;
y2, selecting hard alloy as an electrode material, and installing and fixing the hard alloy on an electric spark deposition machine tool;
y3, adjusting the processing program and technological parameters of the electric spark deposition machine tool, and repeatedly and continuously processing;
y4, repeatedly and continuously depositing along the surface of the aluminum metal sample block during the first processing;
y5, rotating the tool electrode by 90 degrees during the second processing, and then repeatedly and continuously depositing on the surface of the aluminum metal sample block;
and slightly polishing the aluminum metal sample block subjected to the composite treatment to remove some burrs on the surface and reduce the surface roughness of the aluminum metal sample block, wherein the surface performance of the aluminum metal sample block subjected to the composite treatment shows higher wear resistance.
The present invention is not limited to the above embodiments, and modifications and substitutions of the technical solution of the present invention are included in the scope of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. A composite treatment method for improving the wear resistance of a metal surface is characterized by comprising the following steps:
(1) preparing a metal sample to be processed, and preparing micro pits with different sizes and different shapes on a metal sample block by adopting a laser processing mode;
(2) for the metal sample block processed by laser, an alloy coating with higher hardness is deposited on the surface of the metal sample block by adopting an electric spark deposition technology.
2. The method of claim 1, wherein step (1) comprises preparing micro-pits on the surface of the metal block by using a laser processing technique, and comprises the following steps:
s1, grinding the surface of the metal sample block by utilizing SiC water sand paper of 400#, 600#, 800#, 1200#, 2000 #;
s2, cleaning and drying the metal sample block to remove surface impurities;
s3, drawing by using CAD software, drawing figures with different sizes and shapes to be processed, and storing the figures in a DXF format;
s4, the drawn pattern is introduced into a laser marking machine, laser processing parameters are set, and various micro-pits are prepared on the metal sample block to obtain a metal sample block with a surface texture.
3. The method according to claim 1, wherein the electrode material in step (2) is selected from a group consisting of alloy materials with high hardness, strength and good wear resistance: tungsten, cobalt, tungsten cobalt alloys, tungsten carbide cobalt alloys, nickel based alloys, and the like.
4. The method of claim 1, wherein the step (2) of depositing an alloy coating layer having a relatively high hardness on the surface of the metal coupon processed by the laser by using an electro-discharge deposition technique comprises the steps of:
y1, cleaning and drying the metal sample block processed by the laser to remove surface impurities;
y2, selecting a good electrode material, and installing and fixing the good electrode material on an electric spark deposition machine tool;
y3, adjusting the processing program and technological parameters of the electric spark deposition machine tool, and repeatedly and continuously processing;
y4, repeatedly and continuously depositing along the surface of the metal sample block during the first processing;
y5, rotating the tool electrode by 90 degrees during the second processing, and then repeatedly and continuously depositing on the surface of the metal sample block.
5. The method of claim 1 wherein the composite treated metal coupon is lightly sanded to remove any burrs from the surface and reduce the surface roughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807057.8A CN111945158A (en) | 2020-08-12 | 2020-08-12 | Composite treatment method for improving wear resistance of metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807057.8A CN111945158A (en) | 2020-08-12 | 2020-08-12 | Composite treatment method for improving wear resistance of metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111945158A true CN111945158A (en) | 2020-11-17 |
Family
ID=73332302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010807057.8A Pending CN111945158A (en) | 2020-08-12 | 2020-08-12 | Composite treatment method for improving wear resistance of metal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111945158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032546A (en) * | 2021-11-26 | 2022-02-11 | 沈阳理工大学 | Electric spark deposition preparation method of tungsten alloy coating containing aluminum oxide |
-
2020
- 2020-08-12 CN CN202010807057.8A patent/CN111945158A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032546A (en) * | 2021-11-26 | 2022-02-11 | 沈阳理工大学 | Electric spark deposition preparation method of tungsten alloy coating containing aluminum oxide |
| CN114032546B (en) * | 2021-11-26 | 2024-04-05 | 沈阳理工大学 | Electric spark deposition preparation method of tungsten alloy coating containing aluminum oxide |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103089479B (en) | With abrasion-proof piston ring and the preparation method of hard soft composite coating and textured surfaces | |
| EP0187695B1 (en) | Bearings | |
| US20070087211A1 (en) | System for improving the wearability of a surface and related method | |
| CN111519125B (en) | Surface treatment method for outer ring of aircraft engine turbine and outer ring of aircraft engine turbine | |
| Ge et al. | Study on material removal mechanism of electrochemical deep grinding | |
| Schubert et al. | Manufacturing of surface microstructures for improved tribological efficiency of powertrain components and forming tools | |
| CN105925979A (en) | Iron-based titanium carbide laser cladding material | |
| CN1438438A (en) | Method for increasing internal surface wearability of engine cylinder body and cylinder sleeve | |
| JP2016540119A (en) | Method for producing a tribological coated surface | |
| CN113621912A (en) | Gradient self-lubricating composite coating and preparation method thereof | |
| Krasnyy et al. | Improving the wear resistance of piston rings of internal combustion engines when using ion-plasma coatings | |
| CN111945158A (en) | Composite treatment method for improving wear resistance of metal surface | |
| CN109881138A (en) | A kind of protective coating construction technology | |
| Long et al. | Machining properties evaluation of copper and graphite electrodes in PMEDM of SKD61 steel in rough machining | |
| Tarelnyk et al. | Application of wear-resistant nanostructures formed by ion nitridizing & electrospark alloying for protection of rolling bearing seat surfaces | |
| CN107245688B (en) | Corrosion-resistant wear-resistant TiCN composite coating, spraying method thereof and polished rod of corrosion-resistant wear-resistant pumping unit | |
| Ji et al. | Novel method for the hybrid composite electroplating of the upstream pumping mechanical seal | |
| Cao et al. | Preparation of a self-lubricating Cu/h-BN coating on cemented carbide | |
| EP3394457B1 (en) | Coating of a system and an associated method thereof | |
| CN210030919U (en) | Surface coating of die-casting die and die-casting die | |
| OlT et al. | Pre-surface preparation features when applying wear resistant composite sprayed coatings. | |
| JP2011017277A (en) | Metallic material sliding surface structure, cylinder for internal combustion engine, and metallic material sliding surface forming method | |
| CN104498936B (en) | The method that mechanical induction synthesizes metal ceramic wear-resisting layer | |
| CN110315293B (en) | Processing technology of ceramic spinning ring | |
| US3962834A (en) | Method of producing a pitted, porous electrodeposited chromium coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201117 |
|
| WD01 | Invention patent application deemed withdrawn after publication |