CN101935775A - Rare-earth-containing bearing alloy and preparation method thereof - Google Patents
Rare-earth-containing bearing alloy and preparation method thereof Download PDFInfo
- Publication number
- CN101935775A CN101935775A CN2009100540329A CN200910054032A CN101935775A CN 101935775 A CN101935775 A CN 101935775A CN 2009100540329 A CN2009100540329 A CN 2009100540329A CN 200910054032 A CN200910054032 A CN 200910054032A CN 101935775 A CN101935775 A CN 101935775A
- Authority
- CN
- China
- Prior art keywords
- tin
- bearing metal
- alloy
- rare earth
- weight percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a rare-earth-containing bearing alloy. The rare-earth-containing bearing alloy comprises the following components in percentage by weight: 7 to 15 percent of stibium, 4 to 10 percent of copper, 0.001 to 2.0 percent of rare earth and the balance of tin. The invention also provides a method for preparing a rare-earth-containing tin-based bearing alloy material. In the bearing alloy, the hardness can reach 31.3 HB at normal temperature; the compression strength can reach 133.7 MPa; and the compression yield strength can reach 54.5 MPa. Compared with the conventional tin-based bearing alloy, the bearing alloy has the advantages of higher hardness and strength, high heat resistance and high-temperature stability, capacity of improving the wear resistance and the fatigue resistance of a bearing and suitability for the bearings of high-speed and high-load equipment such as a large-scale generator, a compressor and a steam turbine.
Description
Technical field:
The present invention relates to field of metallurgy, relate in particular to the tin-based alloy of making sliding surface bearing bi-metal shaft bushing anti-attrition layer, particularly a kind of bearing metal that contains rare earth and preparation method thereof.
Technical background:
Tinbase and lead 2-base alloy are referred to as Babbitt metal, and it is cast on the box hat (steel backing) usually, uses as bi-metal shaft bushing material.From Industrial Revolution period so far, Babbitt metal is widely used on various industrial equipmentss and the power machine as material more satisfactory in the antifriction metal.Tin-based alloy is based on tin, adds elementary composition alloys such as antimony, copper, and the characteristics of such alloy are the hard points that distributing on soft matrix, and the hard point is used for bearing friction, and soft matrix is in order to satisfy other performance requriementss.
Progress along with modern industry and science and technology, industrial equipmentss such as oil engine, steam turbine, heavy-duty generator, high speed steam engine, turbo-driven compressor just towards large-scale, high-power, at a high speed, the high capacity direction develops rapidly, this has higher requirement to the antifriction metal material, it require bearing metal have the function of suitable hardness, good plasticity and toughness, enough ultimate compression strength and anti-fatigue performance, good antifriction quality, good deposit lubricating oil, good running-in ability, good thermal conductivity and solidity to corrosion, favorable manufacturability can etc.Though and tinhase bearing metals has good running-in ability, imbedibility, seizure resistance and solidity to corrosion, but in use, there are defectives such as poor impact toughness, hot hardness and the fatigue strength of bearing metal is low, thereby can not be used to the bearing pouring into a mould thin layer and bear big oscillating load.In addition, wearing and tearing, fatigue and etching problem and the bearing materials that often runs in present sliding surface bearing use is in close relations.Also having a problem is exactly production process at tinhase bearing metals, because the proportion of various metallic elements has nothing in common with each other, and has caused the existence of bearing metal segregation problem, though contain copper in the bearing metal, can prevent the segregation of antimony effectively, but the gravity segregation problem of copper can often occur again.
In order to address the above problem, the insider is studying this.Domestic and international research was once come refinement bearing metal crystal grain, was prevented the bearing metal component segregation by add element arsenic in traditional tinhase bearing metals in the past, by add element cadmium improve the ultimate compression strength of bearing metal, hardness when improving bearing metal high temperature with solidity to corrosion, improve the mutually oxidation resistant ability of tin, but it seems that now the drawback of these elements can not be ignored, as the adding of cadmium just easily cause between bearing alloy layer and the box hat combine bad.The more important thing is that these elements are all poisonous, this is not only because when these contain the alloy of toxic metal, can produce the toxic gas that is detrimental to health in a large number in founding, but also because in the bearing use, toxic metal can pollution lubricating oil.Therefore along with the pay attention to day by day of national governments to environment protection, eliminating toxic metal such as leaded, cadmium, arsenic has become the significant consideration that bearing materials is selected for use.
Summary of the invention:
The objective of the invention is to a kind of bearing metal that contains rare earth and preparation method thereof, described this bearing metal that contains rare earth and preparation method thereof will solve tinhase bearing metals poor impact toughness of the prior art, hot hardness and the low technical problem of fatigue strength, can produce the technical problem of the toxic gas that is detrimental to health in a large number in the time of will solving bearing metal founding of the prior art simultaneously.
A kind of bearing metal that contains rare earth of the present invention, contain antimony, copper, rare earth and tin, the weight percent of antimony in described bearing metal is 7～15%, the weight percent of described copper in described bearing metal is 4～10%, the weight percent of described rare earth in described bearing metal is 0.001～2.0%, and surplus is described tin.
Further, contain silver in the described bearing metal, the weight percent of described silver in described bearing metal is 0.001～5.0%.
Further, the weight percent of described antimony in described bearing metal is 7～9%, the weight percent of described copper in described bearing metal is 5～8%, and the weight percent of described rare earth in described bearing metal is 0.01～1.5%, and surplus is described tin.
Further, contain silver in the described bearing metal, the weight percent of described silver in described bearing metal is 0.01～1.0%.
Further, it is characterized in that: contain impurity lead in the described bearing metal, the weight percent of described impurity lead in described bearing metal is smaller or equal to 0.02%.
The present invention also provides and has prepared the above-mentioned method that contains rare-earth bearing alloy, in the described method, at first take by weighing each composition according to weight percent, then 60%～70% tin is put in the bearing metal pot, drop into whole copper then, heat fused heats up, tin liquor heats to 570～600 ℃, after treating that the interior copper of pot all is melted in the tin liquor, whole metallic antimonies are joined in the bearing metal liquid, until completely melted, more required rare earth-Xi master alloy and silver are joined in the bearing metal liquid, at last remaining tin is dropped in the bearing metal pot, after all raw material fusings finish, stir, bearing metal liquid left standstill constant temperature 30～80 minutes under 480～500 ℃, stir evenly the cast of coming out of the stove then, teeming temperature is 480～490 ℃, described rare earth---in the tin master alloy, the weight percent content of rare earth in master alloy is 5～12%, and surplus is a tin.
The present invention has improved the hardness and the ultimate compression strength of bearing metal by adding rare earth and silver, has improved the high-temperature stability of bearing metal.After rare earth and silver join in the alloy, can form La with tin respectively
xSn
yAnd Ag
xThe Sn compound, they all belong to high melting compound, can play the effect of high temperature nucleus in alloy, and even dispersion distributes in alloy, suppresses growing up of intermetallic compound each other.In addition, after rare earth joins in the alloy, the part rare earth can and elemental copper generation intermetallic compound, its same Cu
xSn
yCompound is the same, is the high-temperature rigid point.So rare earth, silver and copper in the alloy, can both form compound between high-melting point metal, and can be evenly distributed in the bearing metal as the hard point, make bearing metal have the crystal phase structure of uniform and delicate, and then improved mechanical property and the thermal fatigue property and the high-temperature stability such as hardness, intensity of bearing metal.
Discovery of the present invention has solved the gravity segregation problem of bearing metal by adding rare earth element, makes the bearing metal composition more even.Because the density and the tin of rare earth or tin-rare earth compound are approaching, therefore it can be used as the high temperature particle and suspends uniformly and be distributed in the bearing metal in the process of setting, can prevent and solve the gravity segregation of antimony copper in the bearing metal effectively, and then make the bearing metal composition even, hardness is even, make the wearing and tearing of bearing even, avoided the uneven wear of axle journal, prolonged the work-ing life of bearing.
Another discovery of the present invention is by interpolation rare earth and silver, can replace the poisonous element cadmium in other tin-based alloy patents, reaches the refinement alloy grain, improves the purpose of alloy mechanical property and corrosion resistance, thereby played the effect of clean environment firendly.
Another discovery of the present invention is by the control to poisonous impurity element lead content in the alloy, reduces and avoids environmental pollution.The reduction of lead content has simultaneously reduced the red brittleness of alloy, has improved the high temperature toughness and the stability of alloy, and this mechanical property for the main equipment bearing shell is vital.In the domestic and international standard of tinhase bearing metals, the content of lead generally all is controlled at is not more than 0.35%, we reduce the Pollution risk of bearing metal for the plumbous content in bearing metal of control as much as possible, plumbous foreign matter content are decided to be not more than 0.02%.We find in the triturating, and the Lead contamination problem has not only been avoided in the decline of lead content, and the high temperature toughness of bearing metal is improved, and the red brittleness that this has reduced bearing metal has undoubtedly improved the compressive property of bearing metal.In addition, the minimizing of impurity lead content has also reduced the corrosion resistance of bearing metal.
The present invention compares with prior art, and its effect is actively with tangible.The present invention has overcome the deficiency of existing tinhase bearing metals, and a kind of hardness height, wear resisting property and the good tinhase bearing metals of compressive property are provided.The hardness of bearing metal of the present invention can reach 31.3HB, ultimate compression strength can reach 133.7MPa, and compressive yield strength can reach 54.5MPa.Compare existing tinhase bearing metals, this bearing metal has better ultimate compression strength, can improve the wear resistance and the anti-fatigue performance of bearing, make bearing metal be applicable to the casting thin layer and bear the bearing of big oscillating load, relatively adapt to be used for large-scale generator, compressor, steam turbine etc. at a high speed, the high bearing that carries equipment.
Description of drawings:
Fig. 1 is a kind of crystalline phase figure that contains the bearing metal of rare earth of the present invention.
Embodiment:
Embodiment 1:
Proportion scale: antimony 11%, copper 6%, cerium 1.4%, tin surplus
Earlier 350Kg tin and 60kg copper are put into together heat fused in the alloy pot (tin be placed on below, above copper is placed on), when temperature reaches 570～600 ℃, copper has melted fully, add 110kg antimony, add 280kg tin-cerium (5%) master alloy after having melted again, add 200kg tin at last.After all having melted, stir, leave standstill constant temperature after, stir evenly tapping casting, 480～490 ℃ of teeming temperatures once more.
Embodiment 2:
Proportion scale: antimony 8%, copper 7%, cerium 1.4%, silver 1%, tin surplus
Earlier 380Kg tin and 70kg copper are put into together heat fused in the alloy pot (tin be placed on below, above copper is placed on), when temperature reaches 570～600 ℃, copper has melted fully, add 80kg antimony, add 280kg tin-cerium (5%) master alloy and 10kg silver after having melted again, add 180kg tin at last.After all having melted, stir, leave standstill constant temperature after, stir evenly tapping casting, 480～490 ℃ of teeming temperatures once more.
Embodiment 3:
Proportion scale: antimony 8%, copper 8%, cerium 0.05%, tin surplus
Earlier 550Kg tin and 80kg copper are put into together heat fused in the alloy pot (tin be placed on below, above copper is placed on), when temperature reaches 570～600 ℃, copper has melted fully, add 80kg antimony, add 10kg tin-cerium (5%) master alloy after having melted again, add 280kg tin at last.After all having melted, stir, leave standstill constant temperature after, stir evenly tapping casting, 480～490 ℃ of teeming temperatures once more.
Embodiment 4:
Proportion scale: antimony 8%, copper 7%, cerium 0.1%, silver 1%, tin surplus
Earlier 550Kg tin and 70kg copper are put into together heat fused in the alloy pot (tin be placed on below, above copper is placed on), when temperature reaches 570～600 ℃, copper has melted fully, add 80kg antimony, add 20kg tin-cerium (5%) master alloy and 10kg silver after having melted again, add 270kg tin at last.After all having melted, stir, leave standstill constant temperature after, stir evenly tapping casting, 480～490 ℃ of teeming temperatures once more.
Embodiment 5:
Proportion scale: antimony 8%, copper 7.5%, cerium 0.05%, silver 0.1%, tin surplus
Earlier 553.75Kg tin and 75kg copper are put into together heat fused in the alloy pot (below tin is placed on, above copper is placed on), when temperature reaches 570～600 ℃, copper has melted fully, add 80kg antimony, add 6.25kg tin-cerium (8%) master alloy and 1kg silver after having melted again, add 284kg tin at last.After all having melted, stir, leave standstill constant temperature after, stir evenly tapping casting, 480～490 ℃ of teeming temperatures once more.
Embodiment 6:
Proportion scale: antimony 7.99%, copper 7.73%, cerium 0.036%, silver 0.069%, Sn surplus
Earlier 553.6Kg tin and 77.3kg copper are put into together heat fused in the alloy pot (below tin is placed on, above copper is placed on), when temperature reaches 570～600 ℃, copper has melted fully, add 79.9kg antimony, add 3.6kg tin-cerium (10%) master alloy and 0.69kg silver after having melted again, add 284.91kg tin at last.After all having melted, stir, leave standstill constant temperature after, stir evenly tapping casting, 480～490 ℃ of teeming temperatures once more.
Fig. 1 is the crystalline phase figure of present embodiment.
Claims (7)
1. bearing metal that contains rare earth, it is characterized in that: described bearing metal contains antimony, copper, rare earth and tin, the weight percent of antimony in described bearing metal is 7～15%, the weight percent of described copper in described bearing metal is 4～10%, the weight percent of described rare earth in described bearing metal is 0.001～2.0%, and surplus is described tin.
2. the bearing metal that contains rare earth as claimed in claim 1 is characterized in that: contain silver in the described bearing metal, the weight percent of described silver in described bearing metal is 0.001～5.0%.
3. the bearing metal that contains rare earth as claimed in claim 1, it is characterized in that: the weight percent of described antimony in described bearing metal is 7～9%, the weight percent of described copper in described bearing metal is 5～8%, the weight percent of described rare earth in described bearing metal is 0.01～1.5%, and surplus is described tin.
4. the bearing metal that contains rare earth as claimed in claim 3 is characterized in that: contain silver in the described bearing metal, the weight percent of described silver in described bearing metal is 0.01～1.0%.
5. as claim 1 or 2 or the 3 or 4 described bearing metal that contain rare earth, it is characterized in that: contain impurity lead in the described bearing metal, the weight percent of described impurity lead in described bearing metal is smaller or equal to 0.02%.
6. one kind prepares the method that contains rare-earth bearing alloy as claimed in claim 1, it is characterized in that: at first take by weighing each composition according to weight percent, then 60%～70% tin is put in the alloy pot, drop into whole copper then, heat fused heats up, tin liquor heats to 570～600 ℃, after treating that the interior copper of pot all is melted in the tin liquor, whole metallic antimonies are joined in the alloy liquid, until completely melted, again with required rare earth---the tin master alloy joins in the alloy liquid, at last remaining tin is dropped in the alloy pot, after all raw material fusings finish, stir, alloy liquid left standstill constant temperature 20～45 minutes under 480～500 ℃, stir evenly the cast of coming out of the stove then, teeming temperature is 480～490 ℃, described rare earth---in the tin master alloy, the weight percent content of rare earth in master alloy is 5～12%, and surplus is a tin.
7. the preparation method who contains rare-earth bearing alloy as claimed in claim 6, it is characterized in that: at first take by weighing each composition according to weight percent, then 60%～70% tin is put in the alloy pot, drop into whole copper then, heat fused heats up, tin liquor heats to 570～600 ℃, after treating that the interior copper of pot all is melted in the tin liquor, whole metallic antimonies are joined in the alloy liquid, until completely melted, again with required rare earth---tin master alloy and silver join in the alloy liquid, at last remaining tin are dropped in the alloy pot, after all raw material fusings finish, stir, alloy liquid left standstill constant temperature 20～45 minutes under 480～500 ℃, stir evenly the cast of coming out of the stove then, and teeming temperature is 480～490 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100540329A CN101935775A (en) | 2009-06-29 | 2009-06-29 | Rare-earth-containing bearing alloy and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100540329A CN101935775A (en) | 2009-06-29 | 2009-06-29 | Rare-earth-containing bearing alloy and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101935775A true CN101935775A (en) | 2011-01-05 |
Family
ID=43389338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100540329A Pending CN101935775A (en) | 2009-06-29 | 2009-06-29 | Rare-earth-containing bearing alloy and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101935775A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220516A (en) * | 2011-06-24 | 2011-10-19 | 哈尔滨工业大学 | High-plasticity tin-based Babbitt alloy |
| CN102242293A (en) * | 2011-06-24 | 2011-11-16 | 哈尔滨工业大学 | Tin-based babbitt |
| CN102994803A (en) * | 2012-12-17 | 2013-03-27 | 浙江省诸暨申发轴瓦有限公司 | Bearing alloy material with high softening-point temperature |
| CN104263995A (en) * | 2014-10-09 | 2015-01-07 | 戴国水 | Titanium-based alloy wire |
| CN105149593A (en) * | 2015-06-23 | 2015-12-16 | 江苏鹰球集团有限公司 | Petrol pump motor oil bearing manufacturing method based on powder metallurgy |
| CN107354329A (en) * | 2017-06-06 | 2017-11-17 | 西安交通大学 | ZChSnSb11 6 improves the method that tribological property refines with β phases |
| CN107365923A (en) * | 2017-07-18 | 2017-11-21 | 西安交通大学 | The method of the passivation of ZChSnSb11 6 β phase grain shape wedge angles |
| CN115747566A (en) * | 2022-11-18 | 2023-03-07 | 南京青锐风新材料科技有限公司 | Performance improved Babbitt alloy formula and preparation process thereof |
-
2009
- 2009-06-29 CN CN2009100540329A patent/CN101935775A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220516A (en) * | 2011-06-24 | 2011-10-19 | 哈尔滨工业大学 | High-plasticity tin-based Babbitt alloy |
| CN102242293A (en) * | 2011-06-24 | 2011-11-16 | 哈尔滨工业大学 | Tin-based babbitt |
| CN102994803A (en) * | 2012-12-17 | 2013-03-27 | 浙江省诸暨申发轴瓦有限公司 | Bearing alloy material with high softening-point temperature |
| CN102994803B (en) * | 2012-12-17 | 2014-02-12 | 浙江省诸暨申发轴瓦有限公司 | Bearing alloy material with high softening-point temperature |
| CN104263995A (en) * | 2014-10-09 | 2015-01-07 | 戴国水 | Titanium-based alloy wire |
| CN105149593A (en) * | 2015-06-23 | 2015-12-16 | 江苏鹰球集团有限公司 | Petrol pump motor oil bearing manufacturing method based on powder metallurgy |
| CN107354329A (en) * | 2017-06-06 | 2017-11-17 | 西安交通大学 | ZChSnSb11 6 improves the method that tribological property refines with β phases |
| CN107365923A (en) * | 2017-07-18 | 2017-11-21 | 西安交通大学 | The method of the passivation of ZChSnSb11 6 β phase grain shape wedge angles |
| CN115747566A (en) * | 2022-11-18 | 2023-03-07 | 南京青锐风新材料科技有限公司 | Performance improved Babbitt alloy formula and preparation process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101935775A (en) | Rare-earth-containing bearing alloy and preparation method thereof | |
| JP5642295B2 (en) | Ni-Fe-Cr-based alloy and engine valve plated with it | |
| CN100467644C (en) | Composite aluminium alloy for piston and producing process | |
| CN102304642A (en) | Cast wear-resistant tin bronze alloy and preparation method thereof | |
| CN101705396B (en) | Aluminum-based bearing compound material and preparation method thereof | |
| CN100553811C (en) | Semisolid Kelmet/bimetal copper-steel composite technique for rolling | |
| CN103243236B (en) | High-toughness wear-resistant zinc alloy containing fine crystalline grains and preparation process for same | |
| CN104831115A (en) | Manganese-containing brass alloy and preparation method thereof | |
| CN103602920A (en) | Bearing steel and manufacturing process of wear-resistant bearing | |
| CN100549196C (en) | A kind of method of making tinhase bearing metals | |
| CN102321826B (en) | Extruded high-tin bronze alloy and preparation method thereof | |
| CN103436756B (en) | A kind of high abrasion not seize aluminum base alloy and preparation method thereof | |
| US20200232068A1 (en) | Bronze alloy, and sliding member using the bronze alloy | |
| CN111471889B (en) | Tin-based babbitt metal and preparation method and application thereof | |
| CN102433459A (en) | Phosphorous bronze bar | |
| CN110819847B (en) | High-antimony tin-based babbitt metal material and preparation method thereof | |
| CN111020286B (en) | Tin-based babbitt metal and method and application thereof | |
| CN114058899A (en) | Preparation method of tin-based babbitt alloy | |
| CN107723522B (en) | A kind of aluminium tin nickel copper-based bearing metal and preparation method thereof | |
| CN103667826B (en) | A kind of Strong-strength abrasion-proof cast aluminum alloy | |
| CN107663596A (en) | A kind of high load capacity bearing shell of the cast bronze containing beryllium | |
| CN104032186B (en) | A kind of lead-base bearing alloy and manufacture method thereof | |
| CN113462926B (en) | High-strength wear-resistant high-lead tin bronze material and preparation method thereof | |
| CN101705402B (en) | Aluminum-based bearing alloy and preparation method thereof | |
| CN101985959A (en) | Novel bearing retainer and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Jianhua Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Wu Jianhua Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110105 |