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A kind of self-lubricating stainless steel and preparation method thereof

A stainless steel, self-lubricating technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problem of wear resistance reduction

Active Publication Date: 2021-03-16
NO 59 RES INST OF CHINA ORDNANCE IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method of depositing a coating on the surface of stainless steel can improve the wear resistance, when the coating is damaged or worn, its wear resistance will be greatly reduced

Method used

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  • A kind of self-lubricating stainless steel and preparation method thereof
  • A kind of self-lubricating stainless steel and preparation method thereof
  • A kind of self-lubricating stainless steel and preparation method thereof

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Embodiment 1

[0038] Embodiment 1: a kind of self-lubricating stainless steel, it is to adopt stainless steel powder and nanometer metal solid lubricating phase to be raw material, make through hot pressing sintering process, wherein, stainless steel powder adopts the 316L stainless steel powder of particle size below 20 μm, oxygen content 500- 600ppm; the nano-metal solid lubricating phase adopts molybdenum disulfide with a particle size of less than 1.5 μm, the purity is greater than 98.5%, and the mass ratio of molybdenum disulfide is 12%.

Embodiment 2

[0039] Embodiment 2: a kind of self-lubricating stainless steel, it is to adopt stainless steel powder and nano-metal solid lubricating phase to be raw material, make through hot-pressing sintering process, wherein, stainless steel powder adopts the 316L stainless steel powder of particle size below 20 μm, oxygen content 500- 600ppm; the nano-metal solid lubricating phase adopts molybdenum disulfide with a particle size of less than 1.5 μm, the purity is greater than 98.5%, and the mass ratio of molybdenum disulfide is 6%.

Embodiment 3

[0040] Embodiment 3: a kind of self-lubricating stainless steel, it is to adopt stainless steel powder and nano-metal solid lubricating phase to be raw material, make through hot pressing sintering process, wherein, stainless steel powder adopts the 316L stainless steel powder of grain size below 20 μm, oxygen content 500- 600ppm; the nano-metal solid lubricating phase adopts molybdenum disulfide with a particle size of less than 1.5 μm, the purity is greater than 98.5%, and the mass ratio of molybdenum disulfide is 18%.

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Abstract

The invention discloses a self-lubricating stainless steel and a preparation method thereof. The self-lubricating stainless steel is made by using stainless steel powder and a nano-metal solid lubricating phase as raw materials through a hot-pressing sintering process, and the nano-metal solid lubricating phase is made of molybdenum disulfide or disulfide tungsten. The preparation method steps include: mixing stainless steel powder and nano-metal solid lubricating phase in proportion; placing the mixed material in a hot-press sintering furnace, heating to 1120-1160°C, and starting to pressurize at 1030-1060°C, pressurizing to 18‑20Mpa; heat preservation and pressure holding for 55‑65min; natural cooling to 580‑620°C after heat preservation and pressure holding, while keeping the pressure at 9‑11Mpa, when the temperature drops below 580‑620°C, turn off the pressure and continue to cool naturally to After the temperature is below 90-110°C, the self-lubricating stainless steel is taken out of the furnace. The self-lubricating stainless steel of the present invention has the advantages of both corrosion resistance and wear resistance, and does not need to deposit a wear-resistant coating on the stainless steel surface, which provides a new idea for the design of stainless steel wear resistance, and has an important impetus to the engineering application of stainless steel parts effect.

Description

technical field [0001] The invention relates to a self-lubricating metal material, in particular to a self-lubricating stainless steel and a preparation method thereof. Background technique [0002] Stainless steel is one of the important materials for manufacturing core shafts, bearings and other key equipment parts. It is widely used in aerospace, shipbuilding, construction machinery and other fields. It can work in the environment of -60°C to 300°C, and often faces high-speed and heavy loads. Frictional conditions, in extreme environments, due to the characteristics of stainless steel materials, will cause early failure of bearings. Austenitic stainless steel can meet the environmental requirements of high and low temperature, radiation, and corrosion in the aerospace field because of its non-magnetic, non-phase transformation, and high corrosion resistance, and its application is becoming more and more extensive. However, due to its low hardness, the wear resistance of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/02B22F1/00B22F3/14
CPCC22C33/0278B22F3/14B22F1/105
Inventor 陈强解志文高旭郭锋陈永君邢志辉
Owner NO 59 RES INST OF CHINA ORDNANCE IND