CN1210486C - Bearing slip-in material and making method - Google Patents
Bearing slip-in material and making method Download PDFInfo
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- CN1210486C CN1210486C CN 03118809 CN03118809A CN1210486C CN 1210486 C CN1210486 C CN 1210486C CN 03118809 CN03118809 CN 03118809 CN 03118809 A CN03118809 A CN 03118809A CN 1210486 C CN1210486 C CN 1210486C
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Abstract
The present invention relates to a method for bearing embedding material which is suitable for heavy load conditions, especially suitable for pineapple heads, and has a composite structure. The present invention comprises a steel-based multi-hole frame, wherein copper base or silver base dissolving and permeating liquids are filled into the steel-based multi-hole frame; the steel-based multi-hole frame is formed by that reducing ferrous powder, electrolytic copper powder, nickel powder, molybdenum-ferrous powder and graphite powder are mixed, pressed and sintered, and the proportioning of the raw materials is 0.5 to 7.5 wt% of Cu, 0.3 to 3 wt% of C, 0 to 10 wt% of Ni, 0 to 3 wt% of Mo, and Fe as the rest. The present invention has the advantages of high strength, high bearing capacity, stable torque and temperature of a bearing on the job, good heat conducting property, strong engagement resistant performance, high embedding friction reducing performance and wear resistance, high bearing capacity for embedding the bearing, and long service life.
Description
Technical field
The present invention relates to a kind of being suitable for and under fully loaded transportation condition, use, be particularly suited for bearing edge cover material of the tool composite construction that in the gear wheel head, uses and preparation method thereof.This bearing edge cover material can be widely used in the reinforcement of plain bearing element, particularly cone bit bearing.
Background technology
Bearing has been widely used in each mechanical device and the equipment as a kind of member that supports running.With regard to rock bit, along with the development of drilling technology, high the pressure of the drill and high rotating speed drilling well have become two present main developing direction, and this just has higher requirement to the load-carrying properties and the ability of cone bit bearing.The bearing arrangement of existing rock bit mainly is divided into two types, and a kind of is directly to form bearing pair on palm of roller bits, and another kind is to adopt the structure of mosaic bearing pair.Adopt the structure of mosaic bearing pair, can make bearing pair not be subjected to the limitation of palm of roller bits material and technology, improve the performance of bearing pair.Existing bearing edge cover material has been adopted copper alloy usually, though this material tool bite-resistant performance and antifriction performance preferably, abrasion resistance and intensity are relatively poor, so supporting capacity is low, fall short of application life; As the edge cover material, though anti-wear performance is good, antifriction and bite-resistant performance are poor with tool steel, thereby its load-carrying properties are also desirable not to the utmost.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists at above-mentioned prior art and a kind of not only intensity height is provided, and the bite-resistant performance is good, and cover material and preparation method thereof is inlayed in having than the bearing of high bearing capacity of antifriction performance excellence.
Bearing edge cover material of the present invention is realized by following technical scheme: include the base steel stephanoporate framework, filling copper base or the agent of money base infiltration in the base steel stephanoporate framework.
Press such scheme, described base steel stephanoporate framework is mixed mutually by reduced iron powder, electrolysis molybdenum powder, nickel powder, molybdenum-iron powder, graphite powder, and repressed back sintering forms, and its raw material proportioning (material composition) is by weight:
Cu 0.5～7.5％ C 0.3～3％ Ni 0～10％
Mo 0～3% Fe surplus.
The bone porous density of base steel is 6.0～7.0g/cm
3Described copper base infiltration agent raw material is pure Cu or Cu-Sn alloy or other copper alloy; Money base infiltration agent raw material is pure Ag, Ag-Mn alloy or other silver alloy; The infiltration capacity of infiltration agent is 10～25% of bearing edge cover material gross weight by weight, and finally shaped bearing edge cover material density is 7.0～8.3g/cm
3
The bone porous preferable raw material proportioning of base steel of the present invention (material composition) is by weight:
Cu 2～5％ C 1～2％ Ni 0～2％
Mo 0～1% Fe surplus.
The preparation method of bearing of the present invention edge cover material is: with reduced iron powder, electrolytic copper powder, nickel powder, molybdenum-iron powder, graphite powder is raw material, mixes, and sinters the base steel stephanoporate framework into after repressed, and the bone porous raw material proportioning of base steel is by weight:
Cu 0.5～7.5％ C 0.3～3％ Ni 0～10％
Mo 0～3% Fe surplus.
Sintering temperature is 1100～1200 ℃, and the base steel stephanoporate framework behind the sintering infiltrates copper base or the agent of money base infiltration in the base steel stephanoporate framework by infiltration process, and infiltration capacity is 10～25% of bearing edge cover material gross weight by weight.
Press such scheme, sintering can be vacuum-sintering or hydrogen shield sintering; Infiltration can be vacuum infiltration or hydrogen shield infiltration, and infiltrating temperature is 1100～1200 ℃.
The present invention with the base steel stephanoporate framework as matrix, stephanoporate framework is infiltrated in the copper Ji Yinji infiltration agent that heat conduction height, bite-resistant and antifriction performance is good, formed the bearing edge cover material of tool composite construction performance, produced following beneficial effect: 1, intensity and supporting capacity height, steady 2, the good heat conductivity of bearing moment of torsion and temperature during work, the bite-resistant performance significantly strengthens; 3, the antifriction performance and the abrasion resistance properties of edge cover significantly improve, thereby have improved the supporting capacity and the Acceptable life of edge cover bearing.
Experimental result shows that its tensile strength values of edge cover material of the present invention can reach more than the 900MPa, and hardness number is about HRC40.Can reach 90～110KN by its structure of mosaic cone bit bearing of making average supporting capacity under the 166rpm rotating speed, and the tool steel of same structure size edge cover bearing rock bit average supporting capacity under the 166rpm rotating speed is about 60～70KN.
Description of drawings
Fig. 1 is the metallurgical structure figure of bearing edge cover material of the present invention.
The specific embodiment
Below further specify embodiments of the invention.
The bone porous raw material proportioning of base steel is by weight: Cu2%, Mo1%, C2%, Fe surplus, infiltration agent are the agent of pure Cu infiltration, and the base steel stephanoporate framework is 1130～1150 ℃ of vacuum-sinterings, and the bone porous density of base steel is controlled at 6.2～6.5g/cm
3In the scope, through 1130～1150 ℃ of vacuum-sintering infiltrations 60 minutes, the infiltration capacity of pure Cu by weight for bearing edge cover material gross weight 14～20% between, the bearing edge cover material density of making is 7.6～8.0g/cm
3Bearing test average supporting capacity under the 166rpm rotating speed can reach 96.6KN, and supporting capacity improves 38% on year-on-year basis.
Embodiment 2
The bone porous raw material proportioning of base steel is by weight: Cu 5%, Ni 2%, C 1%, Fe surplus; the infiltration agent is the agent of pure Cu-5%Fe-5%Mn (Fe5%, Mn5%, Cu surplus) copper base infiltration; the base steel stephanoporate framework was at 1120～1140 ℃ of following hydrogen shield sintering, 1130～1150 ℃ of hydrogen shield infiltrations 80 minutes.Bearing test average supporting capacity under the 166rpm rotating speed can reach 112.1KN, and supporting capacity improves 60% on year-on-year basis.
Embodiment 3
The bone porous raw material proportioning of base steel is by weight: Cu 2%, Ni 2%, C 1.5%, Fe surplus; the infiltration agent is the agent of pure Ag infiltration; the base steel stephanoporate framework is at 1130～1150 ℃ of following hydrogen shield thermal sinterings; 1100～1120 ℃ of following hydrogen shield infiltrations 60 minutes; bearing test average supporting capacity under the 166rpm rotating speed can reach 90.2KN, and supporting capacity improves 30% on year-on-year basis.
Embodiment 4
The bone porous raw material proportioning of base steel is by weight: Cu 2%, Ni 2%, C 2%, Fe surplus, the infiltration agent is Ag-15%Mn (Mn15%, Ag surplus) money base infiltration agent, the base steel stephanoporate framework is 1130～1150 ℃ of vacuum-sinterings, 1130～1150 ℃ of vacuum-sintering infiltrations 60 minutes, bearing test average supporting capacity under the 166rpm rotating speed can reach 93.2KN, and supporting capacity improves 33% on year-on-year basis.
Bearing edge cover material of the present invention can quench, temper, to obtain the bearing edge cover material of high strength, high bite-resistant and better antifriction performance.Its typical metallurgical structure is needle-like Ma Shi skeleton and copper base or the agent of the money base infiltration mixed type tissue that distributes of disperse mutually as shown in Figure 1.
Claims (10)
1, a kind of bearing edge cover material includes the base steel stephanoporate framework, it is characterized in that filling copper base or the agent of money base infiltration in the base steel stephanoporate framework.
2, by the described bearing edge of claim 1 cover material, it is characterized in that described base steel stephanoporate framework is mixed mutually by reduced iron powder, electrolytic copper powder, nickel powder, molybdenum-iron powder, graphite powder, repressed back sintering forms, and its raw material proportioning is by weight:
Cu 0.5～7.5％ C 0.3～3％ Ni 0～10％
Mo 0～3% Fe surplus.
3, by the described bearing edge of claim 2 cover material, it is characterized in that the bone porous raw material proportioning of base steel is by weight:
Cu 2～5％ C 1～2％ Ni 0～2％
Mo 0～1% Fe surplus.
4, by claim 1 or 2 described bearing edge cover materials, it is characterized in that the bone porous density of base steel is 6.0～7.0g/cm
3
5, by claim 1 or 2 described bearing edge cover materials, it is characterized in that described copper base infiltration agent raw material is pure Cu or Cu-Sn alloy or copper alloy.
6, by claim 1 or 2 described bearing edge cover materials, it is characterized in that money base infiltration agent raw material is pure Ag, Ag-Mn alloy or silver alloy.
7, by the described bearing edge of claim 4 cover material, it is characterized in that the infiltration capacity of infiltration agent is 10～25% of bearing edge cover material gross weight by weight, finally shaped bearing edge cover material density is 7.0～8.3g/cm
3
8, a kind of preparation method of bearing edge cover material, with reduced iron powder, electrolytic copper powder, nickel powder, molybdenum one iron powder, graphite powder is raw material, mix, sinter the base steel stephanoporate framework into after repressed, it is characterized in that the bone porous raw material proportioning of base steel is by weight:
Cu 0.5～7.5％ C 0.3～3％ Ni 0～10％
Mo 0～3% Fe surplus
Sintering temperature is 1100～1200 ℃, and the base steel stephanoporate framework behind the sintering infiltrates copper base or the agent of money base infiltration in the base steel stephanoporate framework by infiltration process, and infiltration capacity is 10～25% of bearing edge cover material gross weight by weight.
9, by the described preparation method of claim 8, it is characterized in that being sintered to vacuum-sintering or hydrogen shield sintering.
10, by claim 8 or 9 described preparation methods, it is characterized in that infiltration is vacuum infiltration or hydrogen shield infiltration, infiltrating temperature is 1100～1200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03118809 CN1210486C (en) | 2003-03-21 | 2003-03-21 | Bearing slip-in material and making method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03118809 CN1210486C (en) | 2003-03-21 | 2003-03-21 | Bearing slip-in material and making method |
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| Publication Number | Publication Date |
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| CN1438431A CN1438431A (en) | 2003-08-27 |
| CN1210486C true CN1210486C (en) | 2005-07-13 |
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| CN 03118809 Expired - Fee Related CN1210486C (en) | 2003-03-21 | 2003-03-21 | Bearing slip-in material and making method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4954478B2 (en) * | 2005-01-05 | 2012-06-13 | Ｎｔｎ株式会社 | Hydrodynamic bearing device |
| CN101524757B (en) * | 2009-04-24 | 2011-09-14 | 马鞍山市华东粉末冶金厂 | Method for producing fly hammer seat by powder metallurgy |
| CN103540857B (en) * | 2013-10-11 | 2016-08-17 | 芜湖市鸿坤汽车零部件有限公司 | A kind of Powder metallurgy wear-resistant corrosion-resistant bearing material and preparation method thereof |
| CN114178532B (en) * | 2021-10-26 | 2022-11-25 | 莱州长和粉末冶金有限公司 | Powder metallurgy bushing and preparation method thereof |
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Granted publication date: 20050713 Termination date: 20140321 |