CN108061097A - A kind of unleaded Sliding bush and production technology - Google Patents
A kind of unleaded Sliding bush and production technology Download PDFInfo
- Publication number
- CN108061097A CN108061097A CN201711336315.3A CN201711336315A CN108061097A CN 108061097 A CN108061097 A CN 108061097A CN 201711336315 A CN201711336315 A CN 201711336315A CN 108061097 A CN108061097 A CN 108061097A
- Authority
- CN
- China
- Prior art keywords
- sliding bush
- metal layer
- layer
- unleaded
- base metal
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/22—Sliding surface consisting mainly of rubber or synthetic rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to a kind of unleaded Sliding bush, including：Base metal layer and the composite layer on the base metal layer, the composite layer include the carbon fiber of weight percent：0.05~10%, polytetrafluoroethylene (PTFE)：0.05~15%, graphite：0.05~10%, molybdenum disulfide：0.05~10%, carborundum：0.05~5% and the macromolecule matrix polyimides or polyether-ether-ketone of surplus.The step of above-mentioned composite layer is strengthened by mechanical texturing base metal layer, preheated substrate metal layer, spraying composite material layer, heat is formed, high with the bond strength with base metal layer, shock resistance, anti-shear performance are strong, not easily to fall off, the advantages of thickness increases, and service life is long.
Description
Technical field
The present invention relates to the production technologies of a kind of unleaded Sliding bush with composite layer and the bearing shell.
Background technology
At present, the Sliding bush that engineering machinery chassis component and joint part use mainly has following several prods：
1) conventional bronze casting：The lead that material is weight percentage：1~15%, tin：2~15%, zinc：0~15%,
Remaining is Cu.
2) using bimetallic material, since production technology difference is divided into as centrifugal casting bi-metal double technique and powder sintered plate
Material sintering process, the lead which is weight percentage：1~15%, tin：2~15%, zinc：0~15%, remaining is
Cu。
3) three layers of composite are used：Surface layer is polytetrafluoroethylene (PTFE), remaining and bimetallic powder sintered plate technique base
This is consistent, the lead that Copper alloy material is weight percentage：1~15%, tin：2~15%, zinc：0~15%, remaining is Cu.
Contain heavy metal lead in the copper alloy of above-mentioned Sliding bush, exist for the personnel during the manufacturing and product
Environment has great health risk during use, it is therefore desirable to and a kind of unleaded Sliding bush reduces such risk,
Middle Japan has company to substitute lead by adding bismuth element, and bismuth is also a kind of toxic heavy metal element, although current regulation
It does not limit clearly, but with desired raising, can progressively strengthen the use limitation to the dvielement.In addition it is domestic also to adopt
With lead is substituted containing Ni-based copper alloy powder, since technological problems and performance have certain difference with conventional products containing lead at present
Away from.
Then, those skilled in the art is wished by being optimized to skin layer composite material coating, so as to improve nothing
The friction reducing effect of lead Sliding bush.Such as a kind of patent of invention " bearing shell " of Publication No. CN103216530 discloses one kind
Coating composition and painting method with good wearability and fatigue resistance.However, in the prior art to Sliding bush
Research mostly be suitable for underloading high speed field, these products are inapplicable for the engineering machinery field of heavy-duty low-speed.
Main cause is that its bearing capacity, abrasive resistance are undesirable.For example, the product disclosed in CN103216530, using acrylic acid
Resin and epoxy resin make coating be attached on basis material, coating as chemical bonding agent in a manner of chemical adhesive
Thickness is very thin, and service life is limited.If merely increasing coating layer thickness, brittleness can increase, shock resistance, anti-shear performance
It reduces, easily comes off.Therefore, it is necessary to the unleaded Sliding bush in heavy-duty low-speed field is further studied.
The content of the invention
The purpose of the present invention is the unleaded Sliding bush to heavy-duty low-speed field is improved, its shock resistance, shearing resistance are solved
Poor performance is cut, the problem of easily coming off.
In order to solve the above-mentioned technical problem, technical solution proposed by the present invention is：A kind of unleaded Sliding bush, including：Base
Bulk metal layer and the composite layer on the base metal layer, the carbon that the composite layer includes weight percent are fine
Dimension：0.05~10%, polytetrafluoroethylene (PTFE)：0.05~15%, graphite：0.05~10%, molybdenum disulfide：0.05~10%, carbonization
Silicon：0.05~5% and the macromolecule matrix polyimides or polyether-ether-ketone of surplus.
Further, the thickness of the composite layer is 0.005~0.4mm.
Further, described matrix metal layer includes metal substrate and layers of copper.
Further, the metal substrate includes the carbon of weight percent：0.05~0.8%, silicon：0.05~0.8%,
Manganese：0.05~1.0%, chromium：0~1.0%, molybdenum：0~1.5%, nickel：0~1.0% and the iron of surplus.
Further, the layers of copper includes the tin of weight percent：0.05~12%, zinc：0.05~12%, aluminium：0.05
~8%, manganese：0.05~3%, iron：0.05~3% and the copper of surplus.
The present invention also proposes a kind of production technology of unleaded Sliding bush as described above, comprises the following steps：It is prepared by S1
Base metal layer, mechanical texturing base metal layer inner surface；S2, preheated substrate metal layer；S3, spraying composite material layer；S4, heat
Strengthen.
Further, in step S1, the roughness of mechanical texturing to base metal layer inner surface is Ra3.2~Ra200.
Further, in step S2, preheating temperature is 150~400 degrees Celsius.
Further, in step S3, the outlet spraying rate of composite material is 10~300m/s.
Further, will be by workpiece heat to 200~400 degrees Celsius in step S4, room temperature cools down.
Due to the use of above-mentioned technical proposal, the present invention has the following advantages：
1st, it is all harmless to environment and human body without lead；
2nd, the bond strength of composite layer and parent metal material is high, improves its shock resistance and shearing resistance
Performance is cut, thus adds coating layer thickness, improves service life；
3rd, composite material strength is high, avoids the abrasive dust generated during use；
The 4th, even if composite layer surface abrasion forms abrasive dust, since its is relatively soft and contains solid lubrication
Agent, abrasive dust can be embedded at the concave-convex surface to grinding part, make, reduction abrasion smooth to mill part surface；
5th, high lubricating effect, the friction factor in the case where there is oil lubrication are less than 0.1；
6th, local oil-free operating mode can be born in a short time, it can not shape particularly under high-impact load
It is compound when boundary lubrication or local dry friction are in mill part under the operating mode of effectively lubricating oil film
Kollag and its matrix in material layer are forming transfer membrane to mill part surface, are effectively reduced abrasion；
7th, the bond strength with metal substrate is improved as intermediate layer using high-strength alloy copper,
The bond strength of composite layer and copper alloy is also improved, improves the combination attachment of composite layer
Power improves reliability and the service life of composite layer；
8th, due to the presence of layers of copper, even if composite layer is locally destroyed, which also has local
Friction reducing effect.
The present invention, which is suitable for caterpillar machinery chassis member, all kinds of mechanical activity joint parts, bearing shell of internal combustion engine etc., to be needed
The field to be lubricated.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Shown in figure：1st, metal substrate, 2, layers of copper, 3, composite layer.
Specific embodiment
For the ease of understanding the above objects, features and advantages of the present invention, it is illustrated with reference to embodiment.Ying Li
Solution, these embodiments are only illustrative of the invention and is not intended to limit the scope of the invention.A variety of for these embodiments repair
Change and will be apparent to those skilled in the art, the general principles defined herein can not take off
In the case of from the spirit or scope of the present invention, it is achieved in other embodiments.
Inventor has found that various antifriction materials (polytetrafluoroethylene (PTFE), graphite, molybdenum disulfide of the prior art
Deng), polytetrafluoroethylene (PTFE) is particularly, although with extremely low coefficient of friction, since surface tension is extremely low, affects itself and base
The bond strength of material, it is therefore desirable to be adhered to using chemical bonding agent on parent metal material, cause the thickness of antifriction material
It is very thin.
The present invention proposes a kind of new composite layer 3, and material includes the carbon fiber of weight percent：0.05~10%,
Polytetrafluoroethylene (PTFE)：0.05~15%, graphite：0.05~10%, molybdenum disulfide：0.05~10%, carborundum：0.05~5%,
Remaining is macromolecule matrix polyimides (PI) or polyether-ether-ketone (PEEK).The composite layer 3 has the following advantages：
1st, compared with polytetrafluoroethylene (PTFE), polyimides and polyether-ether-ketone surface tension are high, the knot with parent metal material
It is high to close intensity, therefore the wear-resisting property of composite layer 3 obtains improving essentially；
2nd, by the mixing of polyimides or polyether-ether-ketone and polytetrafluoroethylene (PTFE), its molecule long-chain is made locally to hand over
Connection improves the bond strength of macromolecule matrix and polytetrafluoroethylene (PTFE), ensures antifriction performance；
3rd, by adding in carbon chopped fiber and part inorganic material, it is physical crosslinking with polyimides or polyether-ether-ketone, to reach
To the purpose for strengthening composite bed intensity.
The production technology of above-mentioned composite layer includes the following steps：
S1 prepares base metal layer, mechanical texturing base metal layer inner surface.
The base metal layer is preferably composite metal base material, the copper including metal substrate 1 and on the metal substrate 1
Layer 2.
Wherein metal substrate 1 is not destroyed mainly compound using conventional low-carbon or medium high carbon material under case of heavy load
Load is supported under conditions of material layer and layers of copper.Metal substrate 1 is ferrous alloy, wherein adding in carbon by weight percentage：0.05
~0.8%, silicon：0.05~0.8%, manganese：0.05~1.0%, chromium：0~1.0%, molybdenum：0~1.5%, nickel：0~1.0%.
Layers of copper 2 improves its bearing capacity using high strength copper alloy, and improves metal substrate 1 and composite layer 3
With reference to power, reliability and the service life of composite layer 3 are improved, is more suitable for the boundary lubrication working condition of heavy-duty low-speed.Layers of copper 2
Material include the tin of weight percent：0.05~12%, zinc：0.05~12%, aluminium：0.05~8%, manganese：0.05~3%,
Iron：0.05~3%, remaining is：Copper.The tensile strength of the high strength copper alloy is more than 350MPa, and copper alloy containing lead material
Tensile strength is only 160MPa, and the load capacity of the high strength copper alloy is higher than traditional copper alloy containing lead by more than 50%.Layers of copper 2
Combination with metal substrate 1 is casting or powder sintering process, and bond strength is more than 140MPa, and the thickness of layers of copper 2 is
0.05~0.7mm.
Texturing is carried out to 2 inner surface of layers of copper using special equipment, forms subtle irregular texture, until 2 inner surface of layers of copper
Roughness is Ra3.2~Ra200, improves the mechanical bonding strength and wetted area between composite material and metal.
S2, preheated substrate metal layer.
Metal layer is heated by external heat source, preheating temperature is 150~400 degrees Celsius.
S3, spraying composite material layer.
Using spraying device special, the outlet spraying rate of composite material is made to ensure itself and metal layer for 10~300m/s
Mechanical bond and chemical bond intensity.
The composite layer 3 uses the composite material of above-mentioned polyimides or polyether-ether-ketone for matrix.Since this is multiple
The bond strength of condensation material and base metal layer is high, and coating thickness can reach 400 μm, preferably 0.005 in actual use~
0.4mm is far longer than 50 μm of the prior art, therefore with higher shock resistance and anti-shear performance, is especially suitable for weight
The application of the engineering machinery field of low speed is carried, improves service life.
S4, heat are strengthened.
By workpiece heat to 200~400 degrees Celsius, room temperature cooling obtains metal substrate 1, layers of copper 2 and composite layer three
The compound bearing shell finished product of layer.The bond strength of composite layer 3 and layers of copper 2 reaches more than 90Mpa at this time, being capable of impact resistance and again
It carries.
【Frictional behaviour comparative example】
The comparison for employing the Sliding bush and the coefficient of friction of existing copper alloy containing lead of this composite layer 3 is as follows：
| Coefficient of friction | Oil lubrication | Oil-free lubrication |
| This composite layer | 0.04~0.12 | 0.10~0.3 |
| Compare copper alloy containing lead | 0.08~0.20 | 0.25~0.7 (adhering in the short time) |
【Wear-resisting property comparative example】
The service life for employing the Sliding bush of this composite layer 3 is compared with the prior art such as following table：
Experimental condition is as follows：End face frictional wear tester uses drip lubrication, PV values：40MPa m/S.
To grinding part：45# steel is quenched, more than hardness HRC50, surface roughness Ra is below 0.8.
By more than contrast experiment, using the Sliding bush of the present embodiment, on the one hand with relatively low coefficient of friction,
Antifriction performance is excellent；On the other hand there is preferable wear-resisting property, be especially suitable for the application of the engineering machinery field of heavy-duty low-speed.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
Either which part or all technical characteristic are equal with modifying to the technical solution recorded in previous embodiment
It replaces, and these modifications or substitutions, the essence of appropriate technical solution is not made to depart from the model of various embodiments of the present invention technical solution
It encloses.
Claims (10)
1. a kind of unleaded Sliding bush, including：Base metal layer and the composite layer on the base metal layer, it is special
Sign is that the composite layer includes the carbon fiber of weight percent：0.05~10%, polytetrafluoroethylene (PTFE)：0.05~15%,
Graphite：0.05~10%, molybdenum disulfide：0.05~10%, carborundum：0.05~5% and the macromolecule matrix polyamides of surplus
Imines or polyether-ether-ketone.
2. unleaded Sliding bush as described in claim 1, it is characterised in that：The thickness of the composite layer for 0.005~
0.4mm。
3. unleaded Sliding bush as described in claim 1, it is characterised in that：Described matrix metal layer includes metal substrate and copper
Layer.
4. unleaded Sliding bush as claimed in claim 3, it is characterised in that：The metal substrate includes weight percent
Carbon：0.05~0.8%, silicon：0.05~0.8%, manganese：0.05~1.0%, chromium：0~1.0%, molybdenum：0~1.5%, nickel：0~
1.0% and the iron of surplus.
5. unleaded Sliding bush as claimed in claim 3, it is characterised in that：The layers of copper includes the tin of weight percent：
0.05~12%, zinc：0.05~12%, aluminium：0.05~8%, manganese：0.05~3%, iron：0.05~3% and the copper of surplus.
6. the production technology of the unleaded Sliding bush described in a kind of claim 1, which is characterized in that comprise the following steps：S1,
Prepare base metal layer, mechanical texturing base metal layer inner surface；S2, preheated substrate metal layer；S3, spraying composite material layer；
S4, heat are strengthened.
7. the production technology of unleaded Sliding bush as claimed in claim 6, it is characterised in that：In step S1, mechanical texturing is extremely
The roughness of base metal layer inner surface is Ra3.2~Ra200.
8. the production technology of unleaded Sliding bush as claimed in claim 6, it is characterised in that：In step S2, preheating temperature is
150~400 degrees Celsius.
9. the production technology of unleaded Sliding bush as claimed in claim 6, it is characterised in that：In step S3, composite material
Outlet spraying rate is 10~300m/s.
10. the production technology of unleaded Sliding bush as claimed in claim 6, it is characterised in that：In step S4, by workpiece heat
To 200~400 degrees Celsius, room temperature cools down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711336315.3A CN108061097A (en) | 2017-12-14 | 2017-12-14 | A kind of unleaded Sliding bush and production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711336315.3A CN108061097A (en) | 2017-12-14 | 2017-12-14 | A kind of unleaded Sliding bush and production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108061097A true CN108061097A (en) | 2018-05-22 |
Family
ID=62138658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711336315.3A Pending CN108061097A (en) | 2017-12-14 | 2017-12-14 | A kind of unleaded Sliding bush and production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108061097A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985529A (en) * | 2019-12-31 | 2020-04-10 | 湖南崇德工业科技有限公司 | Polyether composite thrust bearing |
| CN111363447A (en) * | 2020-03-16 | 2020-07-03 | 徐华 | Polyether ether ketone based composite coating applied to surface of mechanical part |
| CN116063896A (en) * | 2022-07-26 | 2023-05-05 | 合肥波林新材料股份有限公司 | Thin-layer abrasion-resistant coating and preparation method thereof |
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| CN1789449A (en) * | 2005-12-18 | 2006-06-21 | 浙江海亮股份有限公司 | Brass alloy for automobile bearing |
| CN101126417A (en) * | 2007-09-11 | 2008-02-20 | 嘉兴中达自润轴承工业有限公司 | Self-lubricating sliding bearing material and its preparation method |
| CN101201081A (en) * | 2006-08-02 | 2008-06-18 | 米巴·格来特来格有限公司 | Anti-friction layer for a bearing element |
| CN102046828A (en) * | 2008-03-25 | 2011-05-04 | Skf公司 | A bearing component |
| CN102816518A (en) * | 2012-09-06 | 2012-12-12 | 山东滨州渤海活塞股份有限公司 | Carbon-carbon composite nano-base wear-resistant coating material |
| US20160076587A1 (en) * | 2013-05-09 | 2016-03-17 | Taiho Kogyo Co., Ltd. | Sliding member |
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2017
- 2017-12-14 CN CN201711336315.3A patent/CN108061097A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789449A (en) * | 2005-12-18 | 2006-06-21 | 浙江海亮股份有限公司 | Brass alloy for automobile bearing |
| CN101201081A (en) * | 2006-08-02 | 2008-06-18 | 米巴·格来特来格有限公司 | Anti-friction layer for a bearing element |
| CN101126417A (en) * | 2007-09-11 | 2008-02-20 | 嘉兴中达自润轴承工业有限公司 | Self-lubricating sliding bearing material and its preparation method |
| CN102046828A (en) * | 2008-03-25 | 2011-05-04 | Skf公司 | A bearing component |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985529A (en) * | 2019-12-31 | 2020-04-10 | 湖南崇德工业科技有限公司 | Polyether composite thrust bearing |
| CN111363447A (en) * | 2020-03-16 | 2020-07-03 | 徐华 | Polyether ether ketone based composite coating applied to surface of mechanical part |
| CN116063896A (en) * | 2022-07-26 | 2023-05-05 | 合肥波林新材料股份有限公司 | Thin-layer abrasion-resistant coating and preparation method thereof |
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Application publication date: 20180522 |