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M50-Ag-TiC self-lubricating composite material and preparation method thereof

A composite material and self-lubricating technology, applied in additive manufacturing, additive processing, metal processing equipment, etc., can solve problems such as uneven temperature distribution, small size of sintered body, uncomplicated shape, etc., to improve mechanical properties and friction and wear Excellent performance, uniform temperature distribution and excellent performance

Active Publication Date: 2017-06-13
江苏双正机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, spark plasma sintering technology has many deficiencies, such as: uneven temperature distribution during sintering; the sintered body is small in size and uncomplicated in shape; the mold used in sintering is mainly graphite mold, and carbon atoms diffuse to the sintered body , leading to carbon pollution on the surface or even inside of the sintered body

Method used

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  • M50-Ag-TiC self-lubricating composite material and preparation method thereof
  • M50-Ag-TiC self-lubricating composite material and preparation method thereof
  • M50-Ag-TiC self-lubricating composite material and preparation method thereof

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preparation example Construction

[0033] In the following examples, the M50-Ag-TiC self-lubricating composite material is prepared from M50 spherical powder containing Ag and TiC. The present invention provides a specific preparation method, but does not limit its preparation method. M50 spherical powder containing Ag and TiC and M50-Ag-TiC self-lubricating composite materials prepared by other methods that meet the requirements of the present invention also belong to the present invention protected range.

[0034] The invention provides a preparation method of M50-Ag-TiC self-lubricating composite material, comprising the following steps:

[0035] 1) According to the constituent elements and content of M50 steel, weigh the elemental powder of its constituent elements as the raw material of the matrix material; and weigh the lubricating phase Ag powder according to the (8.0-10.0) wt.% of the raw material quality of the matrix material , according to (4.0-6.0)wt.% of the raw material quality of the matrix mate...

Embodiment 1

[0039] A M50-Ag-TiC self-lubricating composite material, including a matrix material, a lubricating phase, and a reinforcing phase, which uses M50 steel as the matrix material, Ag as the lubricating phase, and TiC as the reinforcing phase; the added lubricating phase Ag and reinforcing phase The mass of the phase TiC powder is 8.0wt.% and 4.0wt.% of the mass of the matrix material M50, respectively. The matrix material M50 steel includes elements C, Mn, Si, Ni, Cr, Cu, Mo, V and Fe, elements C, Mn , Si, Ni, Cr, Cu, Mo, V and Fe mass ratio is 0.75:0.35:0.30:0.20:4.0:0.15:4.2:1:89.05.

[0040] like figure 1 As shown, the preparation method of the above-mentioned M50-Ag-TiC self-lubricating composite material is to use the above-mentioned M50 spherical powder containing Ag and TiC to obtain the M50-Ag-TiC self-lubricating composite material through 3D printing (that is, laser fusion deposition). Specific steps are as follows:

[0041] 1) The raw materials of the matrix material...

Embodiment 2

[0049] A M50-Ag-TiC self-lubricating composite material, including a matrix material, a lubricating phase, and a reinforcing phase, which uses M50 steel as the matrix material, Ag as the lubricating phase, and TiC as the reinforcing phase; the added lubricating phase Ag and reinforcing phase The mass of phase TiC powder is respectively 9.0wt.% and 5.0wt.% of the mass of the matrix material M50, the matrix material M50 steel includes elements C, Mn, Si, Ni, Cr, Cu, Mo, V and Fe, elements C, Mn , Si, Ni, Cr, Cu, Mo, V and Fe mass ratio is 0.75:0.35:0.30:0.20:4.0:0.15:4.2:1:89.05.

[0050] like figure 1 As shown, the preparation method of the above-mentioned M50-Ag-TiC self-lubricating composite material is to use the above-mentioned M50 spherical powder containing Ag and TiC to obtain the M50-Ag-TiC self-lubricating composite material through 3D printing (that is, laser fusion deposition). Specific steps are as follows:

[0051] 1) The raw materials of the matrix material M50 ...

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Abstract

The invention relates to an M50-Ag-TiC self-lubricating composite material. An aerial main shaft bearing material, namely M50 steel, is used as a base material, and Ag and TiC are respectively used as a lubrication phase and a reinforcement phase, wherein the mass of the lubrication phase is (8.0-10.0) wt% of that of the base material; the mass of the reinforcement phase is (4.0-6.0) wt% of that of the base material. The composite material is prepared from M50 spherical powder containing Ag and TiC by adopting 3D printing. The M50-Ag-TiC self-lubricating composite material disclosed by the invention is low in friction coefficient and wear rate, so that the tribological property of M50 bearing steel can be effectively improved; a preparation method is simple and convenient, and process parameters are easy to control during preparation; and complicated mechanical parts can be manufactured, so that the M50-Ag-TiC self-lubricating composite material has important significance in industrialized application of self-lubricating materials.

Description

technical field [0001] The invention relates to an M50-Ag-TiC self-lubricating composite material and a preparation method thereof, belonging to the field of solid self-lubricating composite materials. Background technique [0002] M50 high-temperature bearing steel is the most widely used high-temperature bearing steel in the world. In addition to the characteristics of general bearings, it also has high high-temperature dimensional stability, high-temperature hardness, and high-temperature contact fatigue performance. It is mainly used as the main shaft of aero-engines bearings. With the continuous increase of the thrust ratio of aero-engines, the working environment of the main shaft bearings is also deteriorating, and the problem of friction and wear has become one of the main factors that limit the service life of the bearings. Therefore, the development of M50 composite materials with good wear-reducing and wear-resisting properties has become a hot topic in current r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08B22F3/105B33Y70/00B33Y10/00C22C38/22C22C38/24C22C38/20C22C38/44C22C38/46C22C38/42C22C38/04C22C38/02
CPCC22C38/007C22C38/02C22C38/04C22C38/20C22C38/22C22C38/24C22C38/42C22C38/44C22C38/46B22F9/082B33Y10/00B33Y70/00B22F10/00B22F1/065B22F10/25B22F10/36Y02P10/25
Inventor 史晓亮刘锡尧黄玉春杨慷邓骁斌闫昭薛冰章桥新
Owner 江苏双正机械有限公司
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