CN107460475A - A kind of self-lubricating bearing and preparation method thereof - Google Patents
A kind of self-lubricating bearing and preparation method thereof Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 97
- 239000000843 powder Substances 0.000 claims abstract description 64
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 46
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000011812 mixed powder Substances 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 16
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005253 cladding Methods 0.000 claims abstract description 10
- -1 silicon nitrides Chemical class 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims abstract 4
- 239000010703 silicon Substances 0.000 claims abstract 4
- 239000010936 titanium Substances 0.000 claims abstract 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract 4
- 239000001996 bearing alloy Substances 0.000 claims abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 37
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 13
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 13
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 238000010422 painting Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 31
- 229910001634 calcium fluoride Inorganic materials 0.000 description 31
- 230000001050 lubricating effect Effects 0.000 description 6
- 238000004372 laser cladding Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- 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
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- B22F1/0003—
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Sliding-Contact Bearings (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
技术领域technical field
本发明属于轴承制造技术领域，具体涉及一种自润滑轴承及其制备方法。The invention belongs to the technical field of bearing manufacture, and in particular relates to a self-lubricating bearing and a preparation method thereof.
背景技术Background technique
轴承是工业中使用极其普遍的关键零件，其基本功能是为旋转机械和摆动机械提供受力支撑和运动转换，降低设备在传动过程中的摩擦系数，以保证设备的正常工作。目前轴承材料使用的多为金属和陶瓷材料等，金属材料其表面硬度相对较低，摩擦系数较大，承载能力较低，磨损比较严重，通常工作过程中需要使用润滑剂；陶瓷材料表面硬度较高，耐磨性好，但其脆性较大，抗冲击能力较差。为减少轴承工作过程中的摩擦，提高轴承寿命，近几年开发出一系列新型的自润滑轴承。Bearing is an extremely common key part used in the industry. Its basic function is to provide force support and motion conversion for rotating machinery and oscillating machinery, reduce the friction coefficient of the equipment during the transmission process, and ensure the normal operation of the equipment. At present, most of the bearing materials are metal and ceramic materials. The surface hardness of metal materials is relatively low, the friction coefficient is large, the bearing capacity is low, and the wear is serious. Lubricants are usually used in the working process; the surface hardness of ceramic materials is relatively high. High, good wear resistance, but its brittleness is relatively large, and its impact resistance is poor. In order to reduce the friction in the working process of the bearing and improve the service life of the bearing, a series of new self-lubricating bearings have been developed in recent years.
申请号为CN200510062321.5的中国专利申请文件报道了一种铝基三层复合自润滑轴承及其制法，该自润滑轴承以铝合金板为基体，在基体工作表面上结合一层无铅球形青铜粉，在球形青铜粉上面覆盖一层由聚四氟乙烯和青铜粉、二硫化钼、碳纤维等填充材料所组成的减摩耐磨塑料层；该自润滑轴承具有耐磨性好，自润滑等特点，能够提高轴承寿命。申请号为CN201210418319.7的中国专利申请文件报道了一种具有强结合力的自润滑轴承，该轴承包括金属基层和自润滑层，金属基层与自润滑层之间通过T型凸起相互结合，从而提高结合强度。申请号为CN200910061165.9的中国专利申请文件报道了一种薄壁镶嵌自润滑轴承及其制造方法，该轴承基材表面加工出盲孔，通过将固体润滑剂压入盲孔中，从而实现轴承的自润滑功能。The Chinese patent application document with the application number CN200510062321.5 reports an aluminum-based three-layer composite self-lubricating bearing and its manufacturing method. The self-lubricating bearing uses an aluminum alloy plate as a substrate, and a layer of lead-free spherical Bronze powder, a layer of anti-friction and wear-resistant plastic layer composed of polytetrafluoroethylene, bronze powder, molybdenum disulfide, carbon fiber and other filling materials is covered on the spherical bronze powder; the self-lubricating bearing has good wear resistance and self-lubricating And other characteristics, can improve the bearing life. The Chinese patent application document with the application number CN201210418319.7 reports a self-lubricating bearing with strong bonding force. The bearing includes a metal base layer and a self-lubricating layer. The metal base layer and the self-lubricating layer are bonded to each other through T-shaped protrusions. Thereby improving the bonding strength. The Chinese patent application document with the application number CN200910061165.9 reports a thin-walled inlaid self-lubricating bearing and its manufacturing method. The surface of the bearing base material is machined with a blind hole, and the solid lubricant is pressed into the blind hole to realize the bearing self-lubricating function.
激光熔覆技术自20世纪70年代首次提出之后，因其对基体材料的耐磨损、耐腐蚀、耐热等性能具有良好的改善作用，受到世界各国的关注。同时，石墨烯和氟化钙具有良好的润滑性能，将其作为润滑剂具有广泛的应用前景。目前已有钛合金及铝合金表面激光熔覆多种陶瓷或金属陶瓷涂层的研究，但以铬合金为基体通过激光熔覆技术制备含有石墨烯和氟化钙的陶瓷涂层自润滑轴承的研究还未见报道。Since the laser cladding technology was first proposed in the 1970s, it has attracted the attention of countries all over the world because of its good improvement effect on the wear resistance, corrosion resistance, heat resistance and other properties of the base material. At the same time, graphene and calcium fluoride have good lubricating properties, and they have broad application prospects as lubricants. At present, there have been studies on laser cladding of various ceramic or cermet coatings on the surface of titanium alloys and aluminum alloys, but the preparation of ceramic coating self-lubricating bearings containing graphene and calcium fluoride by laser cladding technology on the chromium alloy Research has not been reported.
发明内容Contents of the invention
为了克服现有技术的不足，本发明的目的是提供一种自润滑轴承及其制备方法，是采用激光熔覆技术，在轴承基体材料表面熔覆一层较厚的自润滑涂层，涂层与基体之间结合强度较高，耐热性、耐腐蚀性好，硬度高、韧性好。In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a self-lubricating bearing and its preparation method, which uses laser cladding technology to clad a thicker self-lubricating coating on the surface of the bearing base material. The bonding strength with the substrate is high, the heat resistance and corrosion resistance are good, the hardness is high and the toughness is good.
本发明解决其技术问题采用的技术方案是：The technical scheme that the present invention solves its technical problem adopts is:
一种自润滑轴承，基体材料为含铬合金钢，轴承工作表面为石墨烯/氟化钙/陶瓷自润滑涂层，所述石墨烯/氟化钙/陶瓷自润滑涂层包括：30-50％镍包氧化铝，20-40％镍包氮化硅，5-8％氧化铝包石墨烯，5-8％氧化铝包氟化钙，20-30％碳化钛，0.5-2％镍，各粉料的重量百分比之和为100％。A self-lubricating bearing, the base material is chromium-containing alloy steel, the working surface of the bearing is a graphene/calcium fluoride/ceramic self-lubricating coating, and the graphene/calcium fluoride/ceramic self-lubricating coating includes: 30-50 % nickel-coated alumina, 20-40% nickel-coated silicon nitride, 5-8% alumina-coated graphene, 5-8% alumina-coated calcium fluoride, 20-30% titanium carbide, 0.5-2% nickel, The sum of the percentages by weight of each powder is 100%.
作为本发明的进一步优选，所述石墨烯/氟化钙/陶瓷自润滑涂层包括：34-40％镍包氧化铝，25-35％镍包氮化硅，5-6％氧化铝包石墨烯，5-6％氧化铝包氟化钙，20-25％碳化钛，1-2％镍，各粉料的重量百分比之和为100％。As a further preference of the present invention, the graphene/calcium fluoride/ceramic self-lubricating coating includes: 34-40% nickel-coated alumina, 25-35% nickel-coated silicon nitride, 5-6% alumina-coated graphite Alene, 5-6% aluminum oxide coated calcium fluoride, 20-25% titanium carbide, 1-2% nickel, the sum of the weight percentages of each powder is 100%.
一种自润滑轴承的制备方法，石墨烯/氟化钙/陶瓷自润滑涂层的混合原料粉末，利用激光涂覆技术，采用同步送粉方式在基体材料表面熔覆，即得。A method for preparing a self-lubricating bearing. The mixed raw material powder of graphene/calcium fluoride/ceramic self-lubricating coating is clad on the surface of a base material by using laser coating technology and synchronous powder feeding.
作为本发明的进一步优选，所述制备方法包括如下步骤：As a further preference of the present invention, the preparation method includes the following steps:
(1)将氧化铝包石墨烯和氧化铝包氟化钙粉末添加至镍包氧化铝、镍包氮化硅、碳化钛和镍粉末中配置混合粉料，所述混合粉料包括：30-50％镍包氧化铝，20-40％镍包氮化硅，5-8％氧化铝包石墨烯，5-8％氧化铝包氟化钙，20-30％碳化钛，0.5-2％镍，各粉料的重量百分比之和为100％；(1) adding alumina-coated graphene and alumina-coated calcium fluoride powder to nickel-coated alumina, nickel-coated silicon nitride, titanium carbide and nickel powder to configure a mixed powder, the mixed powder includes: 30- 50% nickel coated alumina, 20-40% nickel coated silicon nitride, 5-8% alumina coated graphene, 5-8% alumina coated calcium fluoride, 20-30% titanium carbide, 0.5-2% nickel , the sum of the percentages by weight of each powder is 100%;
(2)调整CO2激光器加工参数如下：激光功率为400-1200W，光斑直径1-3mm，扫描速度2-10mm/s，搭接率Φ＝20-50％；将配制好的混合粉料装入送粉器中，调整送粉器送粉速率为100-500mg/s；(2) Adjust CO2 laser processing parameters as follows: laser power is 400-1200W, spot diameter is 1-3mm, scanning speed is 2-10mm/s, lap rate Φ=20-50%; Into the powder feeder, adjust the powder feeding rate of the powder feeder to 100-500mg/s;
(3)通过同步送粉方式，在惰性气体保护下将混合粉料熔覆在基体材料表面，其涂层厚度为1-3mm。(3) By synchronous powder feeding, the mixed powder is clad on the surface of the base material under the protection of inert gas, and the coating thickness is 1-3mm.
作为本发明的进一步优选，所述步骤(3)中同步送粉方式采用离轴送粉法。As a further preference of the present invention, the synchronous powder feeding method in the step (3) adopts an off-axis powder feeding method.
作为本发明的进一步优选，所述步骤(3)中惰性气体为氩气。As a further preference of the present invention, the inert gas in the step (3) is argon.
与现有技术相比，本发明具有以下有益效果：本发明制备的激光熔覆石墨烯/氟化钙/陶瓷自润滑涂层轴承不仅具有良好的韧性，同时，轴承工作表面具有极高的硬度和自润滑特性。工作过程中，基体表面涂层能够在摩擦接触界面形成连续的润滑膜，减小摩擦磨损，实现轴承整个生命周期内的自润滑功效，从而提高轴承寿命。Compared with the prior art, the present invention has the following beneficial effects: the laser cladding graphene/calcium fluoride/ceramic self-lubricating coating bearing prepared by the present invention not only has good toughness, but at the same time, the working surface of the bearing has extremely high hardness and self-lubricating properties. During the working process, the substrate surface coating can form a continuous lubricating film on the friction contact interface, reduce friction and wear, and realize the self-lubricating effect throughout the life cycle of the bearing, thereby improving the life of the bearing.
附图说明Description of drawings
图1是石墨烯/氟化钙/陶瓷自润滑涂层轴承结构示意图；Fig. 1 is a schematic diagram of graphene/calcium fluoride/ceramic self-lubricating coating bearing structure;
图2是本发明的深沟球轴承的剖面示意图；Fig. 2 is a schematic sectional view of the deep groove ball bearing of the present invention;
图3是本发明的推力球轴承的剖面示意图；Fig. 3 is a schematic sectional view of a thrust ball bearing of the present invention;
其中：1为基体材料；2为石墨烯/氟化钙/陶瓷自润滑涂层；3为内圈基体；4为外圈基体；5为滚珠。Among them: 1 is the base material; 2 is the graphene/calcium fluoride/ceramic self-lubricating coating; 3 is the inner ring base; 4 is the outer ring base; 5 is the ball.
具体实施方式detailed description
以下结合实施例对本发明做进一步详细说明。The present invention is described in further detail below in conjunction with embodiment.
实施例1：Example 1:
一种自润滑轴承，如图1所示，基体材料1为GCr15轴承钢，轴承工作表面为石墨烯/氟化钙/陶瓷自润滑涂层2，石墨烯/氟化钙/陶瓷自润滑涂层的混合原料粉末，利用CO2激光涂覆技术，采用同步送粉方式在基体材料表面熔覆，即得自润滑轴承。A self-lubricating bearing, as shown in Figure 1, the base material 1 is GCr15 bearing steel, the bearing working surface is a graphene/calcium fluoride/ceramic self-lubricating coating 2, and the graphene/calcium fluoride/ceramic self-lubricating coating The mixed raw material powder is clad on the surface of the base material by using the CO2 laser coating technology and the synchronous powder feeding method, that is, obtained from the lubricated bearing.
上述自润滑轴承通过如下步骤制备：The above-mentioned self-lubricating bearing is prepared through the following steps:
(1)将氧化铝包石墨烯和氧化铝包氟化钙粉末添加至镍包氧化铝、镍包氮化硅、碳化钛和镍粉末中配置混合粉料，所述混合粉料包括：34％镍包氧化铝，35％镍包氮化硅，5％氧化铝包石墨烯，5％氧化铝包氟化钙，20％碳化钛，1％镍，各粉料的重量百分比之和为100％；石墨烯和氟化钙都具有优良的润滑性能，石墨烯、氟化钙表面包覆氧化铝，对润滑剂形成保护，从而实现轴承的连续自润滑功能。(1) Add alumina-coated graphene and alumina-coated calcium fluoride powder to nickel-coated alumina, nickel-coated silicon nitride, titanium carbide and nickel powder to configure a mixed powder, the mixed powder includes: 34% Nickel-coated alumina, 35% nickel-coated silicon nitride, 5% alumina-coated graphene, 5% alumina-coated calcium fluoride, 20% titanium carbide, 1% nickel, the sum of the weight percentages of each powder is 100% Both graphene and calcium fluoride have excellent lubricating properties. The surface of graphene and calcium fluoride is coated with alumina to protect the lubricant, thereby realizing the continuous self-lubricating function of the bearing.
(2)调整CO2激光加工参数如下：激光功率为400W，光斑直径2mm，扫描速度3mm/s，搭接率Φ＝30％；将配制好的混合粉料装入送粉器中，调整送粉器送粉速率为100mg/s；(2) Adjust the CO2 laser processing parameters as follows: laser power is 400W, spot diameter is 2mm, scanning speed is 3mm/s, lap rate Φ=30%; put the prepared mixed powder into the powder feeder, adjust the feeding The powder feeding rate of the powder device is 100mg/s;
(3)采用CO2激光通过同步送粉方式将混合粉料熔覆在轴承基体材料表面，其涂层厚度为1mm；送粉气与保护气均采用氩气，熔覆完成后对轴承基体工作表面进行修整。采用同步送粉方式具有易实现自动化控制，激光能量吸收率高，无内部气孔，可以显著提高熔覆层的抗开裂性能，使硬质陶瓷相可以在熔覆层内均匀分布，熔覆层表面组织致密，与基体实现牢固结合，不产生剥落。(3) Use CO2 laser to clad the mixed powder on the surface of the bearing base material through synchronous powder feeding method, and the coating thickness is 1mm; both the powder feeding gas and the shielding gas use argon gas, and the bearing base is worked on after the cladding is completed. The surface is trimmed. The synchronous powder feeding method is easy to realize automatic control, the laser energy absorption rate is high, and there is no internal air hole, which can significantly improve the crack resistance of the cladding layer, so that the hard ceramic phase can be evenly distributed in the cladding layer, and the surface of the cladding layer The structure is dense, and it can be firmly combined with the matrix without peeling off.
实施例2：Example 2:
一种自润滑轴承为深沟球轴承，如图2所示，内圈基体3和外圈基体4为GCr15SiMn合金钢，轴承工作表面为石墨烯/氟化钙/陶瓷自润滑涂层2，中间位置为滚珠5。石墨烯/氟化钙/陶瓷自润滑涂层的混合原料粉末，利用CO2激光涂覆技术，采用同步送粉方式在基体材料表面熔覆，即得自润滑轴承。A self-lubricating bearing is a deep groove ball bearing, as shown in Figure 2, the inner ring substrate 3 and the outer ring substrate 4 are GCr15SiMn alloy steel, the bearing working surface is a graphene/calcium fluoride/ceramic self-lubricating coating 2, the middle The position is ball 5. The mixed raw material powder of graphene/calcium fluoride/ceramic self-lubricating coating is clad on the surface of the base material by using CO2 laser coating technology and synchronous powder feeding method, which is obtained from lubricating bearings.
上述自润滑轴承通过如下步骤制备：The above-mentioned self-lubricating bearing is prepared through the following steps:
(1)将氧化铝包石墨烯和氧化铝包氟化钙粉末添加至镍包氧化铝、镍包氮化硅、碳化钛和镍粉末中配置混合粉料，所述混合粉料包括：40％镍包氧化铝，20％镍包氮化硅，8％氧化铝包石墨烯，6％氧化铝包氟化钙，25％碳化钛，1％镍，各粉料的重量百分比之和为100％；(1) adding alumina-coated graphene and alumina-coated calcium fluoride powder to nickel-coated alumina, nickel-coated silicon nitride, titanium carbide and nickel powder to configure a mixed powder, the mixed powder includes: 40% Nickel-coated alumina, 20% nickel-coated silicon nitride, 8% alumina-coated graphene, 6% alumina-coated calcium fluoride, 25% titanium carbide, 1% nickel, the sum of the weight percentages of each powder is 100% ;
(3)调整CO2激光加工参数如下：激光功率为1000W，光斑直径3mm，扫描速度10mm/s，搭接率Φ＝40％；将配制好的混合粉料装入送粉器中，调整送粉器送粉速率为400mg/s；(3) Adjust the CO2 laser processing parameters as follows: laser power is 1000W, spot diameter is 3mm, scanning speed is 10mm/s, lap rate Φ=40%; put the prepared mixed powder into the powder feeder, adjust the feeding The powder feeding rate of the powder device is 400mg/s;
(4)采用CO2激光通过同步送粉方式将混合粉料熔覆在轴承基体材料表面，其涂层厚度为3mm；送粉气与保护气均采用氩气，熔覆完成后对轴承基体工作表面进行修整。(4) Use CO 2 laser to clad the mixed powder on the surface of the bearing base material through synchronous powder feeding, and the coating thickness is 3mm; both the powder feeding gas and the shielding gas use argon, and the bearing base is worked on after the cladding is completed. The surface is trimmed.
实施例3：Example 3:
一种自润滑轴承为推力球轴承，如图3所示，基体材料1为GCr15轴承钢，轴承工作表面为石墨烯/氟化钙/陶瓷自润滑涂层2。石墨烯/氟化钙/陶瓷自润滑涂层的混合原料粉末，利用CO2激光涂覆技术，采用同步送粉方式在基体材料表面熔覆，即得自润滑轴承。A self-lubricating bearing is a thrust ball bearing, as shown in Figure 3, the base material 1 is GCr15 bearing steel, and the working surface of the bearing is a graphene/calcium fluoride/ceramic self-lubricating coating 2. The mixed raw material powder of graphene/calcium fluoride/ceramic self-lubricating coating is clad on the surface of the base material by using CO2 laser coating technology and synchronous powder feeding method, which is obtained from lubricating bearings.
上述自润滑轴承通过如下步骤制备：The above-mentioned self-lubricating bearing is prepared through the following steps:
(1)将氧化铝包石墨烯和氧化铝包氟化钙粉末添加至镍包氧化铝、镍包氮化硅、碳化钛和镍粉末中配置混合粉料，所述混合粉料包括：49.5％镍包氧化铝，20％镍包氮化硅，5％氧化铝包石墨烯，5％氧化铝包氟化钙，20％碳化钛，0.5％镍，各粉料的重量百分比之和为100％；(1) Adding alumina-coated graphene and alumina-coated calcium fluoride powder to nickel-coated alumina, nickel-coated silicon nitride, titanium carbide and nickel powder to configure a mixed powder, the mixed powder includes: 49.5% Nickel-coated alumina, 20% nickel-coated silicon nitride, 5% alumina-coated graphene, 5% alumina-coated calcium fluoride, 20% titanium carbide, 0.5% nickel, the sum of the weight percentages of each powder is 100% ;
(2)调整CO2激光加工参数如下：激光功率为1200W，光斑直径1mm，扫描速度6mm/s，搭接率Φ＝20％；将配制好的混合粉料装入送粉器中，调整送粉器送粉速率为250mg/s；(2) Adjust the CO2 laser processing parameters as follows: laser power is 1200W, spot diameter is 1mm, scanning speed is 6mm/s, lap rate Φ=20%; put the prepared mixed powder into the powder feeder, adjust the feeding The powder feeding rate of the powder device is 250mg/s;
(3)采用CO2激光通过同步送粉方式将混合粉料熔覆在轴承基体材料表面，其涂层厚度为2mm；送粉气与保护气均采用氩气，熔覆完成后对轴承基体工作表面进行修整。(3) Use CO 2 laser to clad the mixed powder on the surface of the bearing base material through synchronous powder feeding method, and the coating thickness is 2mm; both the powder feeding gas and the protective gas use argon gas, and the bearing base is worked on after the cladding is completed. The surface is trimmed.
实施例4：Example 4:
一种自润滑轴承，基体材料为GCr15SiMn合金钢，轴承工作表面为石墨烯/氟化钙/陶瓷自润滑涂层。石墨烯/氟化钙/陶瓷自润滑涂层的混合原料粉末，利用CO2激光涂覆技术，采用同步送粉方式在基体材料表面熔覆，即得自润滑轴承。A self-lubricating bearing, the base material is GCr15SiMn alloy steel, and the working surface of the bearing is a graphene/calcium fluoride/ceramic self-lubricating coating. The mixed raw material powder of graphene/calcium fluoride/ceramic self-lubricating coating is clad on the surface of the base material by using CO2 laser coating technology and synchronous powder feeding method, which is obtained from lubricating bearings.
上述自润滑轴承通过如下步骤制备：The above-mentioned self-lubricating bearing is prepared through the following steps:
(1)将氧化铝包石墨烯和氧化铝包氟化钙粉末添加至镍包氧化铝、镍包氮化硅、碳化钛和镍粉末中配置混合粉料，所述混合粉料包括：30％镍包氧化铝，37％镍包氮化硅，6％氧化铝包石墨烯，5％氧化铝包氟化钙，20％碳化钛，2％镍，各粉料的重量百分比之和为100％；(1) adding alumina-coated graphene and alumina-coated calcium fluoride powder to nickel-coated alumina, nickel-coated silicon nitride, titanium carbide and nickel powder to configure a mixed powder, the mixed powder includes: 30% Nickel-coated alumina, 37% nickel-coated silicon nitride, 6% alumina-coated graphene, 5% alumina-coated calcium fluoride, 20% titanium carbide, 2% nickel, the sum of the weight percentages of each powder is 100% ;
(3)调整CO2激光加工参数如下：激光功率为600W，光斑直径1mm，扫描速度8mm/s，搭接率Φ＝50％；将配制好的混合粉料装入送粉器中，调整送粉器送粉速率为300mg/s；(3) Adjust the CO2 laser processing parameters as follows: laser power is 600W, spot diameter is 1mm, scanning speed is 8mm/s, lap rate Φ=50%; put the prepared mixed powder into the powder feeder, adjust the feeding The powder feeding rate of the powder device is 300mg/s;
(4)采用CO2激光通过同步送粉方式将混合粉料熔覆在轴承基体材料表面，其涂层厚度为2mm；送粉气与保护气均采用氩气，熔覆完成后对轴承基体工作表面进行修整。(4) Use CO 2 laser to clad the mixed powder on the surface of the bearing base material through synchronous powder feeding, and the coating thickness is 2mm; both the powder feeding gas and the shielding gas use argon, and the bearing base is worked on after the cladding is completed. The surface is trimmed.
本发明的保护内容不局限于以上实施例。在不背离发明构思的精神和范围下，本领域技术人员能够想到的变化和优点都被包括在本发明中，并且以所附的权利要求为保护范围。The protection content of the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be conceived by those skilled in the art are all included in the present invention, and the appended claims are the protection scope.
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| CN110066934A (en) * | 2019-06-04 | 2019-07-30 | 宁波达尔机械科技有限公司 | A kind of bearing roller alloy material and preparation method thereof |
| CN110373623A (en) * | 2019-06-13 | 2019-10-25 | 东南大学 | A kind of gradient self-lubricating bearing and preparation method thereof |
| CN118752186A (en) * | 2024-09-09 | 2024-10-11 | 双飞无油轴承集团股份有限公司 | Preparation method of wind power gear box planetary shaft fusion welding sleeve with surface lubrication layer |
| CN118880154A (en) * | 2024-09-27 | 2024-11-01 | 福建省德源智能科技有限公司 | A wear-resistant composite ceramic coating for bearings and preparation method thereof |
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