CN101922514B - Bearing bush with vacuum sputtering plating layer and production method thereof - Google Patents
Bearing bush with vacuum sputtering plating layer and production method thereof Download PDFInfo
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- CN101922514B CN101922514B CN2010102436089A CN201010243608A CN101922514B CN 101922514 B CN101922514 B CN 101922514B CN 2010102436089 A CN2010102436089 A CN 2010102436089A CN 201010243608 A CN201010243608 A CN 201010243608A CN 101922514 B CN101922514 B CN 101922514B
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Abstract
The invention discloses a bearing bush with a vacuum sputtering plating layer and a production method thereof. The bearing bush with the vacuum sputtering plating layer comprises a steel back layer, a substrate layer, a nickel gate layer and an antifriction layer. The bearing bush is characterized in that: the antifriction layer consists of high-tin aluminum alloy which comprises the following elements in percentage by weight: 17.5 to 22.5 percent of tin, 0.7 to 1.3 percent of copper and the balance of aluminum. According to the method for producing the bearing bush with the vacuum sputtering plating layer, the AlSn20Cu antifriction layer made of lead-free material is deposited on the internal circle of the bearing bush by adopting vacuum sputtering plating. The alloy plating layer bearing bush has the advantages of good compactness of the plating layer, high fatigue resistance, good abrasion resistance and environmental protection.
Description
Technical field
The present invention relates to the sliding bearing technical field of internal-combustion engine, relate in particular to a kind of bearing shell and production method thereof with vacuum sputtering plating layer.
Background technique
Bearing shell is a kind of element that is used to protect axle.The main effect of sliding bearing has: 1, supporting axle and parts on shaft, the running accuracy of retainer shaft; 2, the friction and wear between minimizing rotating shaft and the supporting.For the occasion that needs subdivision on high speed, heavy duty, highi degree of accuracy, the structure, need to adopt sliding bearing, like steam turbine, centrifugal compressor, internal-combustion engine, large-size machine etc.The part that plays the bearing journal effect in the bearing is a bearing shell, so bearing shell is the strength member in the sliding bearing.The performance quality of bearing shell directly affects the performance of motor.Along with internal-combustion engine at a high speed, highly carry, the environmental protection direction develops, and the bearing shell performance demands is improved constantly, and requires bearing shell that high bearing capacity and fatigue resistance are not only arranged, and has good wear resistance, corrosion resistance simultaneously.In recent years, along with expanding economy, people constantly increase the demand of automobile, and the pollution problem of environment more and more receives people's attention.The enhancing of Along with people's environmental protection consciousness, internal-combustion engine also will have the favorable environment protection ability to bearing shell.
Generally be made up of base layer, nickel-barrier layer and the antifriction layer of the steel back layer that sets gradually, Cuprum alloy on its structural type of traditional copper alloy bearing-bush, wherein base layer is on steel back layer, and nickel-barrier layer is plated on the base layer, and the antifriction layer is plated on the nickel-barrier layer.The antifriction layer generally adopts slicker solder copper (PbSnCu) ternary alloy.This bearing shell can satisfy the basic demand of motor to a certain extent; But be applied on the internal-combustion engine of reinforcement; Because the fatigue resistance of antifriction layer is low, can not satisfy the development need of car combustion engine, the fatigue resistance of bearing shell, corrosion resistance and wear resistance all have much room for improvement.Simultaneously owing to contain poisonous metal element such as lead in the bearing shell, bearing shell produces certain destruction to environment, does not have the environment protection type performance, does not meet the development need of society.
Traditional bearing bush antifriction layer generally forms through the electric plating method deposition.This plating is in the process of producing, and is very harmful to environment and operator, and electroplates its performance requirement of bearing shell that comes out and have certain narrow limitation such as consistency, fatigue resistance and wear resistance all unsatisfactory.
Summary of the invention
The object of the present invention is to provide a kind of bearing shell of good compactness, fatigue resistance height, high abrasion resistance and environmental protection of coating with vacuum sputtering plating layer.
Another object of the present invention is to provide a kind of production to have the method for the bearing shell of vacuum sputtering plating layer, makes the bearing shell of producing have highly anti-fatigue intensity, high bearing capacity, performance that wear resistance is good, environmental protection.
Technological scheme of the present invention is following:
A kind of bearing shell with vacuum sputtering plating layer; Comprise the steel back layer, base layer, nickel-barrier layer and the antifriction layer that set gradually; It is characterized in that: said antifriction layer is made up of high tin-aluminum alloy, and percentage composition calculates by weight, and the proportioning of each element of high tin-aluminum alloy is: tin 17.5-22.5%; Copper 0.7-1.3%, all the other are aluminium.
The proportioning of said each element of high tin-aluminum alloy is: tin 17.5%, and copper 1.3%, all the other are aluminium; The proportioning of perhaps said each element of high tin-aluminum alloy is: tin 22.5%, and copper 0.7%, all the other are aluminium; The proportioning of perhaps said each element of high tin-aluminum alloy is: tin 20%, and copper 1%, all the other are aluminium.
The thickness of said antifriction layer is 15-20 μ m.
A kind ofly produce aforesaid method, it is characterized in that: may further comprise the steps with bearing shell of vacuum sputtering plating layer:
1) with the preparatory pretreatment of bearing shell matrix, be installed to then in the sputtering equipment, sputtering equipment inside is evacuated down to setting value;
2) under the vacuum condition of aforementioned setting, adopting ion power supply that ion is carried out on the bearing shell surface cleans;
3) between bearing shell matrix and target, set up the horizontal quadrature electromagnetic field; Wherein electric field provides electric field energy by a direct current grid bias power supply; Dc bias power is adjustable continuously from 50V-900V; Pulse frequency is adjustable continuously from 10%-85%, and magnetic field provides magnetic field energy by a magnetic control power supply, and the magnetic control power supply is that direct magnetic control power supply and its value are adjustable continuously from 100V-900V;
4) to the inner headed face sputter nickel-barrier layer of bearing shell matrix; The bearing shell matrix is through casting or is sintered to the copper base alloy on the steel back layer; Target is that purity is 99.9% nickel rake, and the horizontal quadrature electromagnetic field is added power supply, and the crossed electric and magnetic field of level is bombarded target; Deposit to the bearing shell internal circular surfaces after the neutral particle of target is hit, forming one deck rete is nickel-barrier layer;
5) after step 4 is accomplished, sputter high tin-aluminum alloy antifriction layer on nickel-barrier layer, nickel-barrier layer is the nickel-barrier layer of step 4), and target is that purity is 99.9% AlSn
20Cu adds power supply to the horizontal quadrature electromagnetic field, and the crossed electric and magnetic field of level is bombarded target, and the neutral particle of target is deposited to after hitting on the face of bearing shell internal circular surfaces nickel-barrier layer, and forming one deck rete is AlSn
20Cu antifriction layer;
6) after cooling, take out bearing shell.
Add inert gas in the horizontal quadrature electromagnetic field in step 4), step 5), said inert gas is argon gas or the helium of purity more than 99.99%.In step 4), step 5), the permanent magnet in target and the magnetic field is carried out cooling processing with water-cooling pattern.
The invention has the beneficial effects as follows: the mode of vacuum splashing and plating bearing shell coating is adopted in (1), and the good compactness of the bearing shell coating of being produced is observed under metallurgical microscope or analyzed through the contrast experiment, and its consistency is better than traditional plating antifriction layer greatly; Fatigue resistance is very high, and through test bed testing, its fatigue resistance is superior to traditional coating greatly at 110-130MPa; Wear-resistance of bearing pad is good, is more than the twice of lead-tin-copper alloy coating; Hardness is also higher, is 2-3 times that water plates the coating hardness of producing.
(2) environmental protection.Poisonous elements such as coating itself is not leaded, thereby bearing shell has good environmental-protecting performance; The deposition process of coating also is environmental protection, and deposition process is not in water, to carry out, but under high vacuum environment, carries out, and whole process only need add vector gas argon gas or helium, can not damage environment; To the healthy of people also is environmental protection, and whole process just needs manual work to carry out in the process of dress watt and following watt, and other all process steps all can adopt automatic intelligent control.
(3) adopt production of the present invention to have the method for the bearing shell of vacuum sputtering plating layer; Almost can obtain thin film through the method for vacuum splashing and plating to all materials; Broken through the narrow limitation of electroplating; Because electroplating the chemical property receive influence of various factors, particularly metal has limited a lot of materials and can't form coating through the mode of electroplating.
(4) add inert gas in the horizontal quadrature electromagnetic field in step 4), step 5); Like argon gas or the helium of purity more than 99.99%; The adding of inert gas; Increased the time and the probability of each ion in the crossed electric and magnetic field, electron collision, helped sputter and carry out the effect with sputter smoothly.
Table 1 is seen in the concrete contrast that is the bearing shell of bearing shell with vacuum sputtering plating layer of the present invention and existing technology comparative example below.
The performance of table 1 the present invention and comparative example compares:
The fatigue resistance of antifriction layer material adopts " sapphire fatigue test board " test in the table 1.
Adopt " wear testing machine " contrast test through wearability, can know, the fatigue resistance (MPa) of the present invention's antifriction layer material, the good compactness of coating, the fatigue resistance of whole bearing shell is high, wearability is good.
Description of drawings
Fig. 1 has the cross-sectional view of the bearing shell of vacuum sputtering plating layer for the present invention.
Embodiment
As shown in Figure 1, the present invention includes the base layer 2 that steel back layer 1 and copper base alloy are processed, base layer 2 is arranged on the steel back layer 1, vacuum splashing and plating one deck nickel-barrier layer 3 on base layer 2, the thickness of nickel-barrier layer 3 is 1-3 μ m, vacuum splashing and plating one deck antifriction layer 4 on nickel-barrier layer 3.The material of antifriction layer 4 is high tin-aluminum alloy, i.e. AlSn
20Cu, AlSn
20Cu its composition ratio of percentage composition calculating by weight is Sn:17.5-22.5%, Cu:0.7-1.3%, and the Al surplus, its thickness is 15-20 μ m.Copper base alloy base layer 2 can or be sintered on the steel back layer 1 through casting.The fatigue resistance of antifriction layer 4 can reach 110-130MPa.
Embodiment one:
The proportioning of each element of high tin-aluminum alloy is: tin 17.5%, and copper 1.3%, all the other are aluminium.
Embodiment two:
The proportioning of each element of high tin-aluminum alloy is: tin 22.5%, and copper 0.7%, all the other are aluminium.
Embodiment three:
The proportioning of each element of high tin-aluminum alloy is: tin 20%, and copper 1%, all the other are aluminium.
A kind ofly make above-mentioned method, may further comprise the steps with bearing shell of vacuum sputtering plating layer:
1) with the preparatory pretreatment of bearing shell matrix, be installed to then in the sputtering equipment, sputtering equipment inside is evacuated down to setting value;
2) under the vacuum condition of aforementioned setting, adopting ion power supply that ion is carried out on the bearing shell surface cleans;
3) between bearing shell matrix and target, set up the horizontal quadrature electromagnetic field; Wherein electric field provides electric field energy by a direct current grid bias power supply; Dc bias power is adjustable continuously from 50V-900V; Pulse frequency is adjustable continuously from 10%-85%, and magnetic field provides magnetic field energy by a magnetic control power supply, and the magnetic control power supply is that direct magnetic control power supply and its value are adjustable continuously from 100V-900V;
4) to the inner headed face sputter nickel-barrier layer of bearing shell matrix; The bearing shell matrix is through casting or is sintered to the copper base alloy on the steel back layer; Target is that purity is 99.9% nickel rake, and the horizontal quadrature electromagnetic field is added power supply, and the crossed electric and magnetic field of level is bombarded target; Deposit to the bearing shell internal circular surfaces after the neutral particle of target is hit, forming one deck rete is nickel-barrier layer;
5) after step 4) is accomplished on nickel-barrier layer sputter high tin-aluminum alloy antifriction layer, nickel-barrier layer is the nickel-barrier layer of step 4), target is that purity is 99.9% AlSn
20Cu adds power supply to the horizontal quadrature electromagnetic field, and the crossed electric and magnetic field of level is bombarded target, and the neutral particle of target is deposited to after hitting on the face of bearing shell internal circular surfaces nickel-barrier layer, and forming one deck rete is AlSn
20Cu antifriction layer;
6) after cooling, take out bearing shell.
Add inert gas in the horizontal quadrature electromagnetic field in step 4), step 5), said inert gas is argon gas or the helium of purity more than 99.99%.
In step 4), step 5), the permanent magnet in target and the magnetic field is carried out cooling processing with water-cooling pattern.
Claims (9)
1. bearing shell with vacuum sputtering plating layer; Comprise the steel back layer, base layer, nickel-barrier layer and the antifriction layer that set gradually; It is characterized in that: said antifriction layer is made up of high tin-aluminum alloy, and percentage composition calculates by weight, and the proportioning of each element of high tin-aluminum alloy is: tin 17.5-22.5%; Copper 0.7-1.3%, all the other are aluminium.
2. the bearing shell with vacuum sputtering plating layer according to claim 1 is characterized in that: the proportioning of said each element of high tin-aluminum alloy is: tin 17.5%, and copper 1.3%, all the other are aluminium.
3. the bearing shell with vacuum sputtering plating layer according to claim 1 is characterized in that: the proportioning of said each element of high tin-aluminum alloy is: tin 22.5%, and copper 0.7%, all the other are aluminium.
4. the bearing shell with vacuum sputtering plating layer according to claim 1 is characterized in that: the proportioning of said each element of high tin-aluminum alloy is: tin 20%, and copper 1%, all the other are aluminium.
5. have the bearing shell of vacuum sputtering plating layer according to described any of claim 1-4, it is characterized in that: the thickness of said antifriction layer is 15-20 μ m.
6. produce the described method of claim 1 for one kind, it is characterized in that: may further comprise the steps with bearing shell of vacuum sputtering plating layer:
1) the bearing shell matrix is installed in the sputtering equipment, sputtering equipment inside is evacuated down to setting value;
2) under the vacuum condition of aforementioned setting, adopting ion power supply that ion is carried out on the bearing shell surface cleans;
3) between bearing shell matrix and target, set up the horizontal quadrature electromagnetic field; Wherein electric field provides electric field energy by a direct current grid bias power supply; Dc bias power is adjustable continuously from 50V-900V; Pulse frequency is adjustable continuously from 10%-85%, and magnetic field provides magnetic field energy by a magnetic control power supply, and the magnetic control power supply is that direct magnetic control power supply and its value are adjustable continuously from 100V-900V;
4) to the inner headed face sputter nickel-barrier layer of bearing shell matrix; The bearing shell matrix is through casting or is sintered to the copper base alloy on the steel back layer; Target is that purity is 99.9% nickel rake, and the horizontal quadrature electromagnetic field is added power supply, and the crossed electric and magnetic field of level is bombarded target; Deposit to the bearing shell internal circular surfaces after the neutral particle of target is hit, forming one deck rete is nickel-barrier layer;
5) after step 4) is accomplished on nickel-barrier layer sputter high tin-aluminum alloy antifriction layer, nickel-barrier layer is the nickel-barrier layer of step 4), target is that purity is 99.9% AlSn
20Cu adds power supply to the horizontal quadrature electromagnetic field, and the crossed electric and magnetic field of level is bombarded target, and the neutral particle of target is deposited to after hitting on the face of bearing shell internal circular surfaces nickel-barrier layer, and forming one deck rete is AlSn
20Cu antifriction layer;
6) after cooling, take out bearing shell.
7. produce described method according to claim 6, it is characterized in that: add inert gas in the horizontal quadrature electromagnetic field in step 4), step 5) with bearing shell of vacuum sputtering plating layer.
8. produce described method with bearing shell of vacuum sputtering plating layer according to claim 7, it is characterized in that: said inert gas is argon gas or the helium of purity more than 99.99%.
9. produce described method according to claim 6 or 7, it is characterized in that: in said step 4), the step 5), the permanent magnet in target and the magnetic field is carried out cooling processing with water-cooling pattern with bearing shell of vacuum sputtering plating layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102436089A CN101922514B (en) | 2010-08-03 | 2010-08-03 | Bearing bush with vacuum sputtering plating layer and production method thereof |
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| CN2010102436089A CN101922514B (en) | 2010-08-03 | 2010-08-03 | Bearing bush with vacuum sputtering plating layer and production method thereof |
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| CN101922514B true CN101922514B (en) | 2012-05-23 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102900767B (en) * | 2012-09-28 | 2015-04-22 | 广州安达精密工业股份有限公司 | Bearing bush |
| CN103362954B (en) * | 2013-08-06 | 2016-05-18 | 西安工业大学 | A kind of bearing shell and production method thereof with magnetron sputtering self-lubricating composite coating |
| CN104878353A (en) * | 2014-02-27 | 2015-09-02 | 烟台大丰轴瓦有限责任公司 | Vacuum magnetron bearing shell antifriction alloy layer sputtering technology |
| CN104532189B (en) * | 2014-12-12 | 2017-06-20 | 中国兵器科学研究院宁波分院 | A kind of preparation method of the thin Sn phases AlSn20Cu coatings on bearing shell |
| CN106702332A (en) * | 2017-01-20 | 2017-05-24 | 西安工业大学 | Method for synergistic preparation of bearing bush antifriction plating through double technologies |
| CN107513684B (en) * | 2017-07-17 | 2019-12-10 | 中国兵器科学研究院宁波分院 | Self-lubricating composite coating, coating preparation method and product with coating |
| CN107699859B (en) * | 2017-09-26 | 2019-11-22 | 中国兵器科学研究院宁波分院 | Bearing shell all-metal self-lubricating antifriction coating and preparation method thereof |
| CN113638967A (en) * | 2021-07-16 | 2021-11-12 | 上海涟屹轴承科技有限公司 | Thick-wall aluminum-based bimetallic bearing and manufacturing method thereof |
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| JP3249774B2 (en) * | 1997-06-05 | 2002-01-21 | トヨタ自動車株式会社 | Sliding member |
| CN1817634B (en) * | 2006-03-16 | 2012-03-14 | 上海云瀛复合材料有限公司 | Double-layer aluminium-base composite materials, its production and use thereof |
| CN101215688A (en) * | 2007-12-27 | 2008-07-09 | 重庆跃进机械厂 | Aluminum alloy antifriction layer flexible tin phase particles thinner PVD bushing magnetron sputtering technique |
| CN101215687B (en) * | 2007-12-27 | 2010-04-21 | 重庆跃进机械厂有限公司 | Method for preparing PVD bushing with compact arranged column form crystal |
| CN100552247C (en) * | 2007-12-27 | 2009-10-21 | 重庆跃进机械厂有限公司 | Production method with diffusion layer PVD bearing shell |
| CN101215685B (en) * | 2007-12-27 | 2011-06-22 | 重庆跃进机械厂有限公司 | Method for preparing tin content step-up PVD bushing in antifriction layer |
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Address after: 510540 private science and Technology Park, Taihe Town, Baiyun District, Guangdong, Guangzhou Patentee after: GUANGZHOU ANDA PRECISION INDUSTRY Co.,Ltd. Address before: 510540 private science and Technology Park, Taihe Town, Baiyun District, Guangdong, Guangzhou Patentee before: Guangzhou Anda Automobile Parts Co.,Ltd. |
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Effective date of registration: 20230922 Address after: 435200 North Industrial Park, Yangxin County, Huangshi City, Hubei Province Patentee after: HUBEI ANDA AUTO PARTS Co.,Ltd. Address before: 510540 private science and Technology Park, Taihe Town, Baiyun District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU ANDA PRECISION INDUSTRY Co.,Ltd. |