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Copper-base titanium carbide metal ceramic self-lubricating wear-resistant material

A technology of copper-based titanium carbide and wear-resistant materials, applied in the field of wear-resistant materials, copper-based titanium carbide cermet self-lubricating wear-resistant materials, can solve the problem of reducing the strength, toughness and wear resistance of composite materials, and is not suitable for high-load working conditions , matrix continuity damage and other issues, to achieve the effect of improving sintering performance, reducing friction coefficient and improving mechanical properties

Inactive Publication Date: 2010-09-29
无锡爱斯特陶瓷复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few solid lubricants that can withstand high sintering temperatures without losing lubricating properties, and their uneven distribution and damage to the continuity of the matrix will significantly reduce the strength, toughness and wear resistance of composite materials
In addition, due to the addition of solid lubricants (usually solid lubricant materials have non-wetting properties), the strength of the sintered bearing material is very low, the wear resistance is not good, and it is not suitable for high-load working conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take by weight 30 parts of copper powder, 60 parts of titanium powder and carbon powder (the mol ratio of titanium powder and carbon powder should be 1: 1), 10 parts of boron nitride (BN); Dry and degas under high temperature and vacuum conditions, then ball mill and mix evenly; then use molding (pressure between 10 and 200Mpa) to press into a φ12 cm blank; put the pressed blank into the mold, vacuumize and ignite the press Blank; when the compact is completely burned and still in a semi-molten state, the press is used to apply pressure to the blank through the mold. Since there is no air, a highly dense cermet self-lubricating wear-resistant material can be obtained. Of course, if necessary, other substances such as some graphite can also be added.

[0017] The obtained wear-resistant material is detected, the three-point bending bending strength of the wear-resistant material reaches 1100MPa, the crushing strength is 1600MPa, the friction coefficient is 0.19, and the ...

Embodiment 2

[0019] Take by weight 20 parts of copper powder, totally 72 parts of titanium powder and carbon powder (the mol ratio of titanium powder and carbon powder should be 1: 1), 5 parts of boron nitride (BN), 3 parts of aluminum; The weighed powder is dried and degassed under high temperature and vacuum conditions, and then ball milled to mix evenly; then molded (with a pressure between 10 and 200Mpa) to press into a φ12 cm blank; put the pressed blank into the mold, pump Vacuum and ignite the compact; after the compact is completely burned and still in a semi-molten state, use a press to apply pressure to the blank through the mold. Since there is no air, a highly dense cermet self-lubricating wear-resistant material can be obtained.

[0020] The obtained wear-resistant material is tested, the three-point bending strength of the wear-resistant material reaches 700MPa, the crush strength is 1200MPa, the friction coefficient is 0.21, and the thermal conductivity is 50W / mK. The fricti...

Embodiment 3

[0022] Take by weight 40 parts of copper powder, totally 55 parts of titanium powder and carbon powder (the mol ratio of titanium powder and carbon powder should be 1: 1), 3 parts of boron nitride (BN), 2 parts of aluminum; The weighed powder is dried and degassed under high temperature and vacuum conditions, and then ball milled to mix evenly; then molded (with a pressure between 10 and 200Mpa) to press into a φ12 cm blank; put the pressed blank into the mold, pump Vacuum and ignite the compact; after the compact is completely burned and still in a semi-molten state, use a press to apply pressure to the blank through the mold. Since there is no air, a highly dense cermet self-lubricating wear-resistant material can be obtained.

[0023] The obtained wear-resistant material is tested, the three-point bending strength of the wear-resistant material reaches 1200MPa, the crush strength is 1800MPa, the friction coefficient is 0.27, and the thermal conductivity is 120W / mK. The fric...

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Abstract

The invention relates to a copper-base titanium carbide metal ceramic self-lubricating wear-resistant material for manufacturing bearings. According to the technical scheme provided by the invention, the copper-base titanium carbide metal ceramic self-lubricating wear-resistant material comprises the following components in portions by weight: 20-45 portions of copper (Cu), 40-80 portions of titanium carbide (TiC) and 0.1-15 portions of boron nitride (BN). The wear-resistant material of the invention has the characteristics of high temperature resistance, high bearing capacity, self-lubricating performance, high wear resistance and the like, and can meet the requirements for high-temperature high-speed bearings.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and relates to a wear-resistant material that can be used in the manufacture of high-temperature and high-speed bearings, in particular to a copper-based titanium carbide cermet self-lubricating wear-resistant material. Background technique [0002] Bearings used in aviation jet engines, metallurgical high-speed rolling mills, and machine tools are required to have good rigidity, low temperature rise, and be able to withstand large centrifugal forces because they work under high-speed and high-temperature conditions. Generally speaking, the dn value of high peripheral speed bearings used in jet engine main shafts can reach 2.2 million, while the dn value of high angular speed bearings used in dental drills can reach 630,000. The biggest problem with this kind of bearing working at high speed is centrifugal force and temperature rise. [0003] Ordinary alloy bearings mainly obtain high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/10
Inventor 王华彬
Owner 无锡爱斯特陶瓷复合材料有限公司