CN101701603A - Method for manufacturing steel-copper composite shaft sleeve - Google Patents
Method for manufacturing steel-copper composite shaft sleeve Download PDFInfo
- Publication number
- CN101701603A CN101701603A CN200910186517A CN200910186517A CN101701603A CN 101701603 A CN101701603 A CN 101701603A CN 200910186517 A CN200910186517 A CN 200910186517A CN 200910186517 A CN200910186517 A CN 200910186517A CN 101701603 A CN101701603 A CN 101701603A
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- China
- Prior art keywords
- steel
- axle sleeve
- shaft sleeve
- steel axle
- copper
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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.)
- Pending
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- 229910052802 copper Inorganic materials 0.000 title claims abstract description 46
- 239000010949 copper Substances 0.000 title claims abstract description 46
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000003754 machining Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 229910000906 Bronze Inorganic materials 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000010974 bronze Substances 0.000 claims description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 229910021537 Kernite Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000009703 powder rolling Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to a method for manufacturing a steel-copper composite shaft sleeve, and the method comprises the following steps: (1) sealing one end of a steel shaft sleeve, thereby accommodating copper alloy liquid; (2) carrying out centrifuge rotation on the steel shaft sleeve with the copper alloy liquid, thereby combining the copper alloy liquid in the steel shaft sleeve on an inner surface of the steel shaft sleeve under the action of centrifugal force; and (3) carrying out machining on the steel shaft sleeve after the step (2) for obtaining the steel-copper composite shaft sleeve with the required specification. The method has the advantages of simple production technology, high production efficiency and low cost and is applicable to producing a variety of the steel-cooper composite shaft sleeves; in addition, a copper layer surface obtained by applying the method has the advantages of compact structure, high mechanical performances, good surface smoothness, good self-lubrication, good wear resistance and the like.
Description
Technical field
The present invention relates to a kind of method of making steel-copper composite shaft sleeve.
Background technique
Steel-copper composite shaft sleeve is a kind of novel product of China's nineteen thirties development and application, this product has the fatigue strength height, and advantage such as thermal conductivity, wear resistance are good is suitable for bearing middling speed, the high impact loads transmission is used, alternative traditional sliding shaft sleeve and fine copper axle sleeve.
In the prior art, steel-copper composite shaft sleeve adopts powder metallurgical technique production more, be matrix at first promptly with the low-carbon (LC) steel backing, the copper alloy powder of surface sintering heterogeneity, through the bimetal band of multiple high temp sintering and fine and close rolling formation steel copper one, bimetal band forms steel-copper composite shaft sleeve by welding and machining again.This process using powder rolling and butt joint welding, the consistency and the mechanical property of Cuprum alloy are lower, particularly, be difficult to realize industrialized production for the product of thick big steel backing, and, powder metallurgy needs large-scale agglomerating plant, complex process, production procedure is longer, the cost height, the technical requirements height, the application area limitation.
Summary of the invention
Technical problem to be solved by this invention is in order to overcome the deficiencies in the prior art, a kind of manufacture method of improved steel-copper composite shaft sleeve to be provided.
For solving above technical problem, the present invention takes following technological scheme:
A kind of manufacture method of steel-copper composite shaft sleeve, this method comprises the steps:
(1) thereby, can take the sealing of an end of steel axle sleeve in copper alloy liquid;
(2), the described steel axle sleeve that has copper alloy liquid is carried out centrifugal rotation, thus make the copper alloy liquid that is positioned at the steel axle sleeve under action of centrifugal force, be attached on its internal surface;
(3), the steel axle sleeve through step (2) is carried out machining to obtain the steel-copper composite shaft sleeve of required specification.
According to an aspect of the present invention: step (2) specific operation are: Cuprum alloy material, deoxidizing agent and the deslagging agent of set amount are joined in the steel axle sleeve, seal the steel axle sleeve and be heated to the fusing of Cuprum alloy material and obtain described copper alloy liquid, then the steel axle sleeve is contained on the centrifuge and is rotated, be cooled to 100 ℃～600 ℃ until the steel axle sleeve.In a specific embodiment, the steel axle sleeve is heated 1～2 hour down with the acquisition copper alloy liquid 950 ℃～1100 ℃ of temperature, and the rotating speed of centrifuge is chosen as 600～1200 rev/mins.In addition, preferably, quicken the cooling of steel axle sleeve by outer surface spray cooling water to the steel axle sleeve.
According to a further aspect in the invention, step (2) specific operation are: will be heated to steel axle sleeve more than 900 ℃ and be contained on the centrifuge and be rotated, the copper alloy liquid that with temperature is 950 ℃～1100 ℃ set amount simultaneously is poured in the described steel axle sleeve, behind the copper alloy layer to be formed, to steel sleeve outer surface spray cooling water, treat to take off the steel axle sleeve after steel axle sleeve temperature is reduced to below 600 ℃.Under this kind mode, the rotating speed of centrifuge can be chosen as 600～1000 rev/mins.
According to the present invention, described manufacture method also is included in step (2) before, the internal surface of steel axle sleeve is purified successively with cover coat handle.Wherein, thus purify and to be meant the oil of removing steel axle sleeve surface, rust etc. are made steel axle sleeve internal surface light; Described coating is handled and is meant at a certain temperature, coats uniform coating at the internal surface of steel axle sleeve, thereby forms a protective layer, increases the adhesion to copper alloy layer.Purification and cover coat are handled and all can be adopted the technological means of related domain routine to finish.
Preferably, Cuprum alloy described in the present invention is a tin bronze.
Because the enforcement of above technological scheme, the present invention compared with prior art has following advantage:
The present invention makes the Cuprum alloy of fusing under strong action of centrifugal force by centrifugal cast iron pipe, filling by the copper metal and two kinds of different metal shrink tensions and surface heat physical action form higher binding strength, by heating of control Cuprum alloy and fusing, guarantee the Cuprum alloy internal soundness simultaneously.Production technology of the present invention is simple, the manufacturing efficiency height, and cost is low, is fit to produce various steel-copper composite shaft sleeves; In addition, use the copper laminar surface that the inventive method obtains, advantage such as have that dense structure, mechanical property height, surface finishment are good, self lubricity and wear resistance are good.
Embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, but be not limited to these embodiments.
Embodiment 1
Present embodiment provides a kind of steel-copper composite shaft sleeve of following specification: external diameter 185mm, and internal diameter 155mm, length 80mm, the thickness of copper alloy layer are 5mm.Steel axle sleeve material: 20 steel; Copper alloy layer material: ZQSn10-2; Sleeve outer circle and end face roughness Ra3.2, the surface roughness Ra 1.6 of interior round alloyed copper layer.
The manufacture method of above-mentioned steel-copper composite shaft sleeve specifically comprises the steps:
(1), steel axle sleeve preparation: choose the steel pipe of external diameter 195mm, internal diameter 160mm, length 255mm, be processed into the steel axle sleeve of external diameter 190mm, internal diameter 165mm, length 250mm size.Reserve the machining allowance of 3～5mm so that continue after the casting to process at the outer surface of steel axle sleeve, seal with cover plate at steel axle sleeve two ends, and an end therein stays the sprue gate.
(2), the steel axle sleeve purifies: the steel axle sleeve purifies and comprises oil removing, rust cleaning, is specially: rust cleaning: be dipped to the steel axle sleeve with lacquer thinner and be light tone, immaculate, water flushing then; Oil removing: with industrial detergent oil removing and cleaning.
(3), cover coat handles: in electric furnace of resistance type the steel axle sleeve behind the degreasing and rust removal 150 ℃ of left and right sides preheatings, after the preheating, coat uniform kernite coating at the internal surface of steel axle sleeve, kernite coating temperature is 80 ℃.
(4) heating steel axle sleeve: behind the brushing paint, the steel axle sleeve is placed in the stove heats, temperature is controlled at 950 ℃, about time 1h.
(5) Cuprum alloy is smelted: use Cuprum alloy trade mark Sn10-2,1050 ℃ of the tapping temperatures of copper alloy liquid.
(6) centrifugal pressure casting: move on the centrifugal casting machine after the steel axle sleeve heating and be rotated, rotating speed is 600 rev/mins, pours into a mould copper alloy liquid simultaneously, form copper alloy layer after, the outer surface water spray to the steel axle sleeve when steel axle sleeve temperature is reduced to below 600 ℃, can take off.
(7) adopt the method for turning to reach length, the internal diameter of described steel-copper composite shaft sleeve, the size requirement of external diameter, length 80mm, internal diameter 155mm, external diameter 185mm (wherein steel half bush wall thickness 10mm, tin bronze layer thickness 5mm), this example can be processed into 3 composite shaft sleeves.
(8) according to product requirement, the bottom outlet that goes out oil groove and oilhole and inlay the graphite that is used to lubricate in the copper alloy layer surface Machining of composite shaft sleeve is so that improve the greasy property of axle sleeve.
Detect through copper alloy layer surface inspection and copper sample performance, this composite shaft sleeve quality is good, and the copper laminar surface is bright and clean, and flawless, slag inclusion and shrinkage defect, hardness of copper alloy are combined closely between the steel copper greater than 80HB, and adhesive strength reaches 40MPa, satisfies usage requirement.
Embodiment 2
Present embodiment provides a kind of flange type steel copper composite shaft sleeve of following specification: flange outer diameter 130mm, internal diameter 52mm, flange thickness 18mm, straight tube end external diameter 82mm, internal diameter be with the flange internal diameter, length overall 46mm, tin bronze thickness 3mm.Steel axle sleeve material: 20 steel; Copper layer material: ZQSn10-2, sleeve outer circle and end face roughness Ra3.2, interior round copper laminar surface roughness Ra1.6.
The manufacture method of above-mentioned flange type steel copper composite shaft sleeve comprises the steps:
(1), steel axle sleeve preparation: adopt the solid bar of external diameter 140mm to carry out flange type steel axle sleeve cutting, be shaped as both ends of the surface flanged (two of the same form), flange plate external diameter 136mm, straight tube external diameter 90mm, internal diameter 58mm, length 98mm after the processing.Require endoporus and both ends of the surface surface roughness Ra 1.6, outer surface roughness Ra6.3, outer surface leaves the machining allowance of 3-5mm so that processing is continued in the casting back, and steel axle sleeve flange one end is dead for the weldering of 10mm end cap with thickness earlier, and weldering is dead again after adding the tin bronze material for the other end.Leave the 3mm slit between end cap and the flange, to form the copper layer of end face of flange.
(2) the steel axle sleeve purifies: the steel axle sleeve purifies and comprises oil removing, rust cleaning and last protective layer, and its technology is: rust cleaning: soak 2-3min with the X-1 lacquer thinner, the steel axle sleeve is light tone, immaculate, water flushing then.Oil removing: with industrial detergent oil removing and cleaning.
(3) cover coat is handled: in electric furnace of resistance type the steel axle sleeve behind the degreasing and rust removal is carried out preheating, 150-200 ℃ of its preheating temperature coated uniform kernite coating on steel axle sleeve internal surface after the preheating, and the coating temperature is 80-100 ℃, coating thickness 0.5-1mm.
(4) centrifugal: as in the steel axle sleeve, to add tin bronze alloys material, deoxidizing agent (phosphor-copper) and deslagging agent, the prescription of adding quantity and material calculates according to the product structure size, seal welding port then, and then adopt the coal gas high-temperature stove that the Cuprum alloy in the steel axle sleeve is carried out heat fused, about 950 ℃ of heating-up temperatures, 1-2 hour heating time, be fused into the liquid copper alloy liquid that gets until the Cuprum alloy material.
(5) centrifugal: as after treating in the steel axle sleeve that the Cuprum alloy material is fused into liquid copper alloy liquid, the steel axle sleeve to be installed on high speed rotating on the centrifuge rapidly, until cooling.Rotating speed adopts 800 rev/mins of kinds (selecting according to the product structure size), behind the rotation 5-10s, sprays water to the steel sleeve outer surface formula that drenches with rain, and its hydraulic pressure 0.2-0.25Mpa, air pressure is 0.6Mpa, when treating that steel axle sleeve temperature is reduced to 200-600 ℃, can take off axle sleeve.
(6) adopt the method for turning to reach length, the internal diameter of composite shaft sleeve, the size requirement of external diameter.This example can be processed into 2 flange type steel copper composite shaft sleeves.
Detect through copper metallic face inspection and copper sample performance, this composite shaft sleeve quality is good, and the copper laminar surface is bright and clean, and flawless, slag inclusion and shrinkage defect, hardness of copper alloy are combined closely between the steel copper greater than 80HB, and adhesive strength reaches 40MPa, satisfies usage requirement.
In sum, the present invention can high efficiency production steel-copper composite shaft sleeve, reaches the purpose with copper take place of steel, saves scarce resource, reduces production costs, and satisfies usage requirement large-scale, the high load machinery, has a good application prospect.
More than the present invention has been done detailed description, but the invention is not restricted to the embodiments described.All equivalences of doing according to spirit of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (9)
1. the manufacture method of a steel-copper composite shaft sleeve, it is characterized in that: this method comprises the steps:
(1) thereby, can take the sealing of an end of steel axle sleeve in copper alloy liquid;
(2), the described steel axle sleeve that has copper alloy liquid is carried out centrifugal rotation, thus make the copper alloy liquid that is positioned at described steel axle sleeve under action of centrifugal force, be attached on the internal surface of described steel axle sleeve;
(3), the steel axle sleeve through step (2) is carried out machining to obtain the steel-copper composite shaft sleeve of required specification.
2. the manufacture method of steel-copper composite shaft sleeve according to claim 1, it is characterized in that: step (2) specific operation are: Cuprum alloy material, deoxidizing agent and the deslagging agent of set amount are joined in the steel axle sleeve, seal the steel axle sleeve and be heated to the fusing of Cuprum alloy material and obtain described copper alloy liquid, then the steel axle sleeve is contained on the centrifuge and is rotated, be cooled to 100 ℃～600 ℃ until the steel axle sleeve.
3. the manufacture method of steel-copper composite shaft sleeve according to claim 2, it is characterized in that: the rotating speed of described centrifuge is 600～1200 rev/mins.
4. the manufacture method of steel-copper composite shaft sleeve according to claim 3 is characterized in that: in the step (2), quicken the cooling of steel axle sleeve by the outer surface spray cooling water to described steel axle sleeve.
5. the manufacture method of steel-copper composite shaft sleeve according to claim 2 is characterized in that: described steel axle sleeve was heated 1～2 hour down for 950 ℃～1100 ℃ in temperature.
6. the manufacture method of steel-copper composite shaft sleeve according to claim 1, it is characterized in that: step (2) specific operation are: will be heated to steel axle sleeve more than 900 ℃ and be contained on the centrifuge and be rotated, the copper alloy liquid that with temperature is 950 ℃～1100 ℃ set amount simultaneously is poured in the described steel axle sleeve, behind the copper alloy layer to be formed, to steel sleeve outer surface spray cooling water, treat to take off the steel axle sleeve after steel axle sleeve temperature is reduced to below 600 ℃.
7. the manufacture method of steel-copper composite shaft sleeve according to claim 6, it is characterized in that: the rotating speed of described centrifuge is 600～1000 rev/mins.
8. according to the manufacture method of each described steel-copper composite shaft sleeve in the claim 1 to 7, it is characterized in that: described manufacture method also is included in described step (2) before, and the internal surface of described steel axle sleeve is purified and the cover coat place successively.
9. according to the manufacture method of each described steel-copper composite shaft sleeve in the claim 1 to 7, it is characterized in that: described Cuprum alloy is a tin bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186517A CN101701603A (en) | 2009-11-16 | 2009-11-16 | Method for manufacturing steel-copper composite shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910186517A CN101701603A (en) | 2009-11-16 | 2009-11-16 | Method for manufacturing steel-copper composite shaft sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101701603A true CN101701603A (en) | 2010-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910186517A Pending CN101701603A (en) | 2009-11-16 | 2009-11-16 | Method for manufacturing steel-copper composite shaft sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101701603A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996636A (en) * | 2012-11-28 | 2013-03-27 | 诸暨市中天工业有限公司 | Steel-copper composite shaft sleeve and manufacturing method thereof |
| CN103753042A (en) * | 2014-01-20 | 2014-04-30 | 东北大学 | Copper and steel bimetal bridging welding method |
| CN103920860A (en) * | 2014-05-09 | 2014-07-16 | 三一重工股份有限公司 | Method for centrifugal casting of steel backing copper alloy duplex metal shaft sleeve |
| CN105822670A (en) * | 2015-01-07 | 2016-08-03 | 上海电气集团上海电机厂有限公司 | Level four flame proof motor spindle sleeve and casting method thereof |
| CN106180625A (en) * | 2016-08-19 | 2016-12-07 | 浙江双飞无油轴承股份有限公司 | Closed type centrifugal casting method |
| CN107805832A (en) * | 2017-11-30 | 2018-03-16 | 浙江新瑞欣精密线锯有限公司 | A kind of actinobacillus device of scroll saw processing |
| CN112008057A (en) * | 2020-09-01 | 2020-12-01 | 上海润成机电科技有限公司 | Bimetal sliding bearing |
| CN114054655A (en) * | 2021-10-28 | 2022-02-18 | 昆明理工大学 | A thixotropic extrusion method for copper-steel composite shaft sleeve parts |
| CN114535933A (en) * | 2022-01-28 | 2022-05-27 | 东北大学 | Manufacturing method of high-stress self-tightening copper-steel composite wear-resistant shaft sleeve |
| CN115507123A (en) * | 2022-09-16 | 2022-12-23 | 浙江海马传动科技股份有限公司 | Steel-copper composite shaft sleeve and machining method thereof |
| CN115899084A (en) * | 2022-09-21 | 2023-04-04 | 嘉善金路精密轴承制造有限公司 | High-strength copper bush and production process thereof |
-
2009
- 2009-11-16 CN CN200910186517A patent/CN101701603A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996636B (en) * | 2012-11-28 | 2015-08-26 | 诸暨市中天工业有限公司 | A kind of steel-copper composite shaft sleeve and manufacture method thereof |
| CN102996636A (en) * | 2012-11-28 | 2013-03-27 | 诸暨市中天工业有限公司 | Steel-copper composite shaft sleeve and manufacturing method thereof |
| CN103753042A (en) * | 2014-01-20 | 2014-04-30 | 东北大学 | Copper and steel bimetal bridging welding method |
| CN103753042B (en) * | 2014-01-20 | 2016-05-11 | 东北大学 | A kind of copper base-steel bi-metal bridging welding method |
| CN103920860B (en) * | 2014-05-09 | 2017-02-08 | 湖南科技大学 | Method for centrifugal casting of steel backing copper alloy duplex metal shaft sleeve |
| CN103920860A (en) * | 2014-05-09 | 2014-07-16 | 三一重工股份有限公司 | Method for centrifugal casting of steel backing copper alloy duplex metal shaft sleeve |
| CN105822670A (en) * | 2015-01-07 | 2016-08-03 | 上海电气集团上海电机厂有限公司 | Level four flame proof motor spindle sleeve and casting method thereof |
| CN106180625A (en) * | 2016-08-19 | 2016-12-07 | 浙江双飞无油轴承股份有限公司 | Closed type centrifugal casting method |
| CN107805832A (en) * | 2017-11-30 | 2018-03-16 | 浙江新瑞欣精密线锯有限公司 | A kind of actinobacillus device of scroll saw processing |
| CN112008057A (en) * | 2020-09-01 | 2020-12-01 | 上海润成机电科技有限公司 | Bimetal sliding bearing |
| CN114054655A (en) * | 2021-10-28 | 2022-02-18 | 昆明理工大学 | A thixotropic extrusion method for copper-steel composite shaft sleeve parts |
| CN114535933A (en) * | 2022-01-28 | 2022-05-27 | 东北大学 | Manufacturing method of high-stress self-tightening copper-steel composite wear-resistant shaft sleeve |
| CN115507123A (en) * | 2022-09-16 | 2022-12-23 | 浙江海马传动科技股份有限公司 | Steel-copper composite shaft sleeve and machining method thereof |
| CN115899084A (en) * | 2022-09-21 | 2023-04-04 | 嘉善金路精密轴承制造有限公司 | High-strength copper bush and production process thereof |
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Open date: 20100505 |