CN102899550B - High temperature resistant self-lubricating bearing material and preparation method thereof - Google Patents
High temperature resistant self-lubricating bearing material and preparation method thereof Download PDFInfo
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- CN102899550B CN102899550B CN201210357625.4A CN201210357625A CN102899550B CN 102899550 B CN102899550 B CN 102899550B CN 201210357625 A CN201210357625 A CN 201210357625A CN 102899550 B CN102899550 B CN 102899550B
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Abstract
The invention discloses a high temperature resistant self-lubricating bearing material and a preparation method thereof. The method comprises: mainly taking 06Cr19Ni10 stainless steel powder as the matrix material, selecting high purity (greater than or equal to 95%) Cu, Mo, and Co metal powder as the reinforcement phase, selecting MoS2 and CaF2 as the lubricating friction reduction phase, and simultaneously adding a proper amount of sodium stearate as the binder, then performing cold press molding and pressureless vacuum sintering, thus obtaining the bearing material. The high temperature resistant self-lubricating bearing material prepared by the method provided in the invention can still have a low friction coefficient and good abrasion resistance under a high temperature environment of 600DEG C, can be applied in steel, metallurgy and other heavy machinery equipment, and is especially suitable for occasions requiring oil-free lubrication.
Description
Technical field
The present invention relates to lubricant field, specifically, is a kind of preparation method of high temperature resistant self-lubricating material, axle sleeve.
Background technology
Along with the development of modern science and technology, material friction under the high temperature conditions, wearing and tearing and lubrication problem are subject to extensive concern day by day.General lubricating grease in high temperature environments easily oxidized, evaporation and cause lubrication failure.Particularly in dust atmosphere, the factor such as existence, shock strength height of impurity also can reduce the lubricity of grease greatly.Solid self-lubricant material is and conventional lubrication material (lubricating oil, lubricating grease etc.) diverse Novel lubricating material.Conventional lubrication material forms the effect that fluid or semi-fluid film play effectively lubricating on frictional interface, and solid self-lubricant material then mainly relies on the low sheraing characteristic of material itself or its transfer film and has excellent wear-resistant and antifriction function.In heavy-duty machinery equipment, the bad working environments such as various roller bearing will withstand shocks at work, high temperature, dust, the rolling bearing of common grease lubrication should not use in this occasion.Thus high temperature self-lubricating bearing material is researched and developed significant.
Summary of the invention
The object of the present invention is to provide a kind of high temp resistance self-lubricating bearing material, it can overcome the problem of existing bearing materials high-temperature wearable scarce capacity, under the hot environment of 600 DEG C, still there is lower frictional coefficient and good abrasion resistance properties, can use for a long time in the occasion of oil-free lubricatoin.
In order to realize foregoing invention object, present invention employs following technical scheme:
Described high temp resistance self-lubricating bearing material is constructed as follows by weight percentage:
MoS
215 ~ 20%, CaF
25 ~ 10%, Mo8 ~ 10%, Co3 ~ 5%, Cu10 ~ 15%, sodium stearate 3% ~ 5%, surplus are 06Cr19Ni10 Stainless Steel Powder;
Described high temp resistance self-lubricating bearing material is made through mixing → shaping → sintering under above-mentioned formation, and each operation is described below:
(1) mix
First by meet recipe requirements 200 orders about Mo powder, Co powder, Cu powder, Stainless Steel Powder, MoS
2, CaF
2after powder and sodium stearate mix, put into tumbling ball mill mixing, mixing method adopts dry mix, and ratio of grinding media to material is 5:1, mixing time 2 ~ 3h;
(2) shaping
Compound after ball milling is loaded bearing die, makes type at the pressure of 600Mpa, pressurize 20 ~ 30min in pressing process;
(3) sinter
Bearing blank is inserted vacuum sintering furnace sinter, sintering temperature is 1100 ~ 1200 DEG C, heats up with the temperature rise rate of 10 DEG C/min, is incubated 1h, then furnace cooling after reaching set temperature
(4) bearing blank obtained is carried out the process such as surfacing, deburring, chamfering, namely obtain high temp resistance self-lubricating bearing.
The raw material of the inventive method is easy to get, cheap, preparation technology is simple, parameter is easily controlled, production process safety and environmental protection, is particularly suitable for large-scale industrial production.By adjustment and the optimization of alloy constituent element, define the novel fire resistant self-lubricating bearing material with the hard wild phase of high strength and finely dispersed lubrication anti-attrition phase mortise.The sliding surface bearing prepared by the inventive method can be widely used in, in the heavy-duty machinery equipments such as iron and steel, metallurgy, the energy, being particularly suitable for the occasion requiring oil-free lubricatoin.
Accompanying drawing explanation
Fig. 1 is a kind of high temp resistance self-lubricating bearing material frictional behaviour curve at different temperatures of embodiment 1.Fig. 2 is a kind of high temp resistance self-lubricating bearing material frictional behaviour curve at different temperatures of embodiment 2.
Embodiment
The present invention is further described below by way of embodiment, as known by the technical knowledge, the present invention also describes by other the scheme not departing from the technology of the present invention feature, and the change therefore within the scope of the present invention all or equivalent scope of the invention is all included in the invention.
embodiment 1:
(1) a kind of high temp resistance self-lubricating bearing material is constructed as follows by weight percentage:
MoS
215%, CaF
25%, Mo10%, Co3%, Cu12%, sodium stearate 3%, surplus are 06Cr19Ni10 Stainless Steel Powder;
(2) first metal powder, lubricant powder and sodium stearate are put on tumbling ball mill and mix, mixing method adopts dry mix, and ratio of grinding media to material is 5:1, time 3h;
(3) compound after ball milling is loaded bearing die, make type at the pressure of 600Mpa, pressurize 20min in pressing process, obtain bearing blank;
(4) bearing blank is inserted vacuum sintering furnace to sinter, sintering temperature is 1100 DEG C, heats up with the temperature rise rate of 10 DEG C/min, is incubated 1h, then furnace cooling after reaching set temperature;
(5) finally the bearing blank of acquisition is carried out the process such as surfacing, deburring, chamfering, namely obtain high temperature self-lubricating bearing.
UMT-2 type frictional testing machines carries out frictional behaviour test (rotating speed 200r/min, load 20N, probe temperature is from room temperature to 600 DEG C) to the product of the present embodiment, and test result as shown in Figure 1.
embodiment 2:
(1) a kind of high temp resistance self-lubricating bearing material is constructed as follows by weight percentage:
MoS
220%, CaF
25%, Mo8%, Co5%, Cu10%, sodium stearate 3%, surplus are 06Cr19Ni10 Stainless Steel Powder;
(2) metal powder, lubricant powder and sodium stearate are put on tumbling ball mill and mix, mixing method adopts dry mix, and ratio of grinding media to material is 5:1, time 3h;
(3) compound after ball milling is loaded bearing die, make type at the pressure of 600Mpa, pressurize 20min in pressing process, obtain bearing blank;
(4) bearing blank is inserted vacuum sintering furnace to sinter, sintering temperature is 1200 DEG C, heats up with the temperature rise rate of 10 DEG C/min, is incubated 1h, then furnace cooling after reaching set temperature;
(5) finally the bearing blank of acquisition is carried out the process such as surfacing, deburring, chamfering, namely obtain high temperature self-lubricating bearing.
UMT-2 type frictional testing machines carries out frictional behaviour test (rotating speed 200r/min, load 20N, probe temperature is from room temperature to 600 DEG C) to the product of the present embodiment, and test result as shown in Figure 2.
Claims (2)
1. a high temp resistance self-lubricating bearing material, is characterized in that, by MoS
2powder, CaF
2powder, Mo powder, Co powder, Cu powder, sodium stearate powder and 06Cr19Ni10 Stainless Steel Powder are formed, wherein, and MoS
2powder account for material gross weight 15 ~ 20%, CaF
2powder account for material gross weight 5 ~ 10%, Mo powder account for material gross weight 8 ~ 10%, Co powder account for material gross weight 3 ~ 5%, Cu powder account for material gross weight 10 ~ 15%, sodium stearate powder accounts for 3% ~ 5% of material gross weight.
2. the preparation method of high temp resistance self-lubricating bearing material according to claim 1, is characterized in that, comprise the steps:
(1) by meeting 200 object Mo powder of recipe requirements, Co powder, Cu powder, Stainless Steel Powder mixing, metal-powder is obtained;
(2) MoS of recipe requirements will be met
2, CaF
2powder and sodium stearate are mixed together in metal-powder, put into ball mill ball milling 2 ~ 3h;
(3) compound after ball milling in step (2) is loaded shaft sleeve die and make type at the pressure of 600Mpa, pressurize 20 ~ 30min in pressing process, obtain bearing blank;
(4) inserted in vacuum sintering furnace by bearing blank and sinter, sintering temperature is 1100 ~ 1200 DEG C, heats up with the temperature rise rate of 10 DEG C/min, is incubated 1h, then furnace cooling after reaching set temperature;
(5) the axle sleeve blank that step (4) obtains is carried out surfacing, deburring, chamfered, namely obtain high temp resistance self-lubricating bearing.
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| CN201210357625.4A CN102899550B (en) | 2012-09-24 | 2012-09-24 | High temperature resistant self-lubricating bearing material and preparation method thereof |
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| CN201210357625.4A CN102899550B (en) | 2012-09-24 | 2012-09-24 | High temperature resistant self-lubricating bearing material and preparation method thereof |
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| CN102899550B true CN102899550B (en) | 2015-01-14 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537681A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy high temperature resistant bearing material and manufacturing method thereof |
| CN104028766A (en) * | 2014-04-18 | 2014-09-10 | 济南大学 | Preparation method of Ni-based self-lubricating coating |
| CN104860680B (en) * | 2015-06-17 | 2017-02-22 | 洛阳理工学院 | Wide-adaptability dual-mechanism self-lubricating bearing material and preparation method thereof |
| CN104909760B (en) * | 2015-06-17 | 2017-05-24 | 洛阳理工学院 | Preparation method of self-lubricating ZrB2-ZrO2-CaF2 ceramic material |
| CN104909761B (en) * | 2015-06-17 | 2017-04-05 | 洛阳理工学院 | A kind of preparation method for being suitable for high/low temperature self-lubricating knife tool material |
| CN105908102A (en) * | 2016-05-31 | 2016-08-31 | 安徽潜山轴承制造有限公司 | Preparation method for high-strength and wear-resistant bearing |
| CN106825546B (en) * | 2017-02-20 | 2019-11-26 | 武汉理工大学 | A kind of M50-Ag-TiC self-lubricating composite and preparation method thereof |
| CN108044111A (en) * | 2017-12-26 | 2018-05-18 | 苏州贝尔纳德铁路设备有限公司 | A kind of preparation method of hydraulic tamping machine stent |
| CN108119549A (en) * | 2017-12-26 | 2018-06-05 | 浙江长盛塑料轴承技术有限公司 | The manufacturing process of composite self-lubricating bearing |
| CN108526366B (en) * | 2018-04-04 | 2020-06-19 | 武汉理工大学 | Self-lubricating hot forging die based on Sialon ceramic and preparation method thereof |
| CN108570591B (en) * | 2018-05-11 | 2020-12-22 | 武汉理工大学 | Iron-nickel-based high-temperature self-lubricating hot-working die material and preparation method thereof |
| CN109097696B (en) * | 2018-09-29 | 2020-04-17 | 北京金物科技发展有限公司 | Stainless bearing steel and preparation method thereof |
| CN111719086B (en) * | 2019-03-21 | 2022-03-22 | 南京理工大学 | Iron-based medium-high temperature self-lubricating material and preparation method thereof |
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| CN101517112A (en) * | 2006-08-11 | 2009-08-26 | 联邦-蒙古尔烧结产品有限公司 | Improved powder metallurgy composition |
| CN102102161A (en) * | 2009-12-21 | 2011-06-22 | 日立粉末冶金株式会社 | Sintered valve guide and a method of making a sintered valve guide |
| CN102172775A (en) * | 2005-10-12 | 2011-09-07 | 日立粉末冶金株式会社 | Method of manufacturing sintered valve seat |
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| DE102006027391B4 (en) * | 2005-06-13 | 2008-03-20 | Hitachi Powdered Metals Co., Ltd., Matsudo | Sintered valve seat and method for its manufacture |
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| CN102172775A (en) * | 2005-10-12 | 2011-09-07 | 日立粉末冶金株式会社 | Method of manufacturing sintered valve seat |
| CN101517112A (en) * | 2006-08-11 | 2009-08-26 | 联邦-蒙古尔烧结产品有限公司 | Improved powder metallurgy composition |
| CN102102161A (en) * | 2009-12-21 | 2011-06-22 | 日立粉末冶金株式会社 | Sintered valve guide and a method of making a sintered valve guide |
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