TiC-Cr3C2 base cermet composite cylinder jacket

A ceramic composite and cermet technology, which is used in cylinders, engine components, mechanical equipment, etc., can solve the problems of high processing cost, short service life, complicated preparation process, etc. simple craftsmanship

Inactive Publication Date: 2007-05-30
范兴宽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used mud pump cylinder liners are made of bimetallic liners, alumina liners and zirconia liners. Due to the harsh working conditions, the metal liners are not wear-resistant or corrosion-resistant, and have a long service life. Short; the fracture toughness of alumina cylinder liners is low, the preparation process is complicated, the service life is short, the surface of zirconia liners is easy to pulverize, it is not suitable for marine use, the service life is not even as good as that of alumina liners, and the processing cost is high

Method used

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Examples

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Embodiment Construction

[0006] The present invention will be described in further detail below in conjunction with the implementation examples.

[0007] Its formula is based on TiC, 84.3% of which have an average particle size of less than 250 mesh TiC, and 5.7% of which have an average particle size of less than 250 mesh of Cr 3 C 2 , 5% average particle size less than 5 microns metal nickel powder through annealing, 5% average particle size less than 5 microns metal molybdenum powder through annealing, put the raw materials weighed according to the formula in the roller mill, add 0.3% oleic acid, Nitrogen protected ball milling for 30 hours, wherein the ratio of material to ball is 3:1, the ball milling medium is high specific gravity cemented carbide, the ball milled raw materials are passed through a 60-mesh sieve, and the raw materials sieved by ball milling are put into the mixer and added 1% Buna rubber is mixed under nitrogen protection, the mixing time is 6 hours, the material is passed thr...

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PUM

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Abstract

The invention discloses a making method of TiC-Cr3C2 based metal ceramic composite cylinder liner, which comprises the following steps: adopting TiC as base; adding Cr3C2 powder, metal nickel powder and metal molybdenum powder; milling raw material; blending raw materials in the blender; graining; moulding under high pressure; insulating under 1430-1520 deg.c for 2-3h; sintering into metal ceramic blank in the vacuum or protective atmosphere; manufacturing periphery of metal ceramic blank; placing metal ceramic blank in the metal sleeve to heat completely with retaining shrink range at 0.25-0.40mm; refining internal blank; polishing to the roughness at 0.1-0.2um; making the product for cement slurry pump.

Description

1. Technical field [0001] The invention relates to a TiC-Cr 3 C 2 Metal-ceramic composite cylinder liner belongs to special ceramics. 2. Background technology [0002] The high-pressure mud pump is the "heart" of the oil drilling and geological exploration workbench, and the mud pump cylinder liner is an important component of the mud pump. The currently used mud pump cylinder liners are made of bimetallic liners, alumina liners and zirconia liners. Due to the harsh working conditions, the metal liners are not wear-resistant or corrosion-resistant, and have a long service life. Short; the fracture toughness of alumina cylinder liners is low, the preparation process is complicated, and the service life is short. The surface of zirconia liners is easy to pulverize, which is not suitable for marine use. The service life is even lower than that of alumina liners, and the processing cost is high. 3. Contents of the invention [0003] The purpose of the present invention is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/56F16J10/04
Inventor 范兴宽文斌
Owner 范兴宽
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