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Bearing outer ring or inner ring material and preparation method thereof
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A technology for the outer ring and inner ring of a bearing, which is applied in the field of monitoring materials, can solve problems such as gaps, and achieve the effects of improved performance, long life, and good wear resistance
Inactive Publication Date: 2017-12-29
蒋俊
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Summary
Abstract
Description
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Application Information
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Problems solved by technology
Although aluminum-based bearing materials have many excellent properties, there is still a big gap from practical application due to the limitations of aluminum-based powder metallurgy. Due to the problems in the manufacturing process, the quality of fired products needs to be improved, and further Improve performance Mass production expand its range of applications
Method used
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Comparison scheme
Effect test
Embodiment 1
[0017] A preparation method of bearing outer ring or inner ring material, prepared by the following steps:
[0019] (2) putting each component weighed in step (1) into a ball millbarrel and grinding to obtain a mixture;
[0020] (3) Take the mixed material and use the sliding bearing bush mold at 1600kg / cm 2 Compression molding under high pressure, keep the pressure stable during the pressing process, and keep it for 2 hours to obtain the bearing bush blank;
[0021] (4) Under the protective atmosphere of argon or nitrogen, take the blank of the bearing bush and sinter it. The sintering temperature is 1300°C, and the temperature is raised at a heating rate of 20°C / min. Afte...
Embodiment 2
[0024] A preparation method of bearing outer ring or inner ring material, prepared by the following steps:
[0025] (1) Weigh the following components in parts by weight: 21 parts of iron powder, 7 parts of silicon powder, 5 parts of ceramic powder, 5 parts of graphite powder, 7 parts of stearic acid, 4 parts of aluminum oxide, polytetrafluoroethylene 4 parts of tungsten powder and 6 parts of tungsten powder;
[0026] (2) putting each component weighed in step (1) into a ball millbarrel and grinding to obtain a mixture;
[0027] (3) Take the mixed material and use the sliding bearing bush mold at 1600kg / cm 2 Compression molding under high pressure, keep the pressure stable during the pressing process, and keep it for 2 hours to obtain the bearing bush blank;
[0028] (4) Under the protective atmosphere of argon or nitrogen, take the blank of the bearing bush and sinter it. The sintering temperature is 1300°C, and the temperature is raised at a heating rate of 20°C / min. Afte...
Embodiment 3
[0031] A preparation method of bearing outer ring or inner ring material, prepared by the following steps:
[0032] (1) Weigh the following components in parts by weight: 28 parts of iron powder, 9 parts of silicon powder, 7 parts of ceramic powder, 8 parts of graphite powder, 9 parts of stearic acid, 5 parts of aluminum oxide, polytetrafluoroethylene 5 parts of tungsten powder and 7 parts of tungsten powder;
[0033] (2) putting each component weighed in step (1) into a ball millbarrel and grinding to obtain a mixture;
[0034] (3) Take the mixed material and use the sliding bearing bush mold at 1600kg / cm 2 Compression molding under high pressure, keep the pressure stable during the pressing process, and keep it for 2 hours to obtain the bearing bush blank;
[0035] (4) Under the protective atmosphere of argon or nitrogen, take the blank of the bearing bush and sinter it. The sintering temperature is 1300°C, and the temperature is raised at a heating rate of 20°C / min. Afte...
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Abstract
The invention relates to a bearing outer ring or inner ring material and a preparation method of the bearing outer ring or inner ring material. The bearing outer ring or inner ring material is manufactured by the following steps that (1) 15-28 parts of iron powder, 5-9 parts of siliconpowder, 4-7 parts of ceramicpowder, 3-8 parts of graphitepowder, 5-9 parts of stearic acid, 2-5 parts of aluminum oxide, 3-5 parts of polytetrafluoroethylene and 4-7 parts of tungsten powder are weighed and obtained by weight; (2) all the components obtained in the step (1) are placed in a ball-milling cylinder to be ground, and a mixture is obtained; (3) the mixture is fetched, a plain bearing bush mold is used for compression molding, and then a bearing bush blank is obtained; (4) under the protection atmosphere of argon or nitrogen, the bearing bush blank is sintered; and (5) the bearing bush blank obtained in the step (4) is cooled to the indoor temperature, a surface oxide layer is removed, surface grinding, burring and chamfering treatment are conducted, and then the bearing outer ring or inner ring material is obtained. The bearing outer ring or inner ring material and the preparation method of the bearing outer ring or inner ring material have the beneficial effects that the prepared bearing material has quite good wear resistance and is long in service life during operation and use in a high-temperature high-pressure environment.
Description
technical field [0001] The invention relates to the field of monitoring materials, in particular to a bearing outer ring or inner ring material and a preparation method thereof. Background technique [0002] Metal sintered oil-impregnated bearings are a kind of sintered material made by powder metallurgy process with metal powder as raw material. Metal sintered oil-containing products are inherently porous, and have the advantage that the number, size and distribution of voids can be freely adjusted during the manufacturing process. Sintered metal oil-impregnated bearings have been widely used in many fields such as automobiles, household appliances, transportation machinery, agricultural machinery, instruments and meters. Sintered metal oil-impregnated bearings mainly used in modern industry can be divided into copper-based, iron-based, copper-iron-based, etc. according to the base material. Aluminum is one of the most widely distributed elements in the earth's crust, and...
Claims
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Application Information
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