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Super hard sintered body

A sintered body, hard technology, applied in the direction of manufacturing tools, transportation and packaging, accessories of toolholders, etc., can solve problems such as shortened life

Inactive Publication Date: 2018-11-23
MITSUBISHI MATERIALS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when used under severe conditions with many impact factors, W 2 C acts as a starting point of destruction, so it is predicted that the life will be greatly shortened

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0096] As raw material powders, WC and W fine powders (sample numbers 1 to 8 in Table 3) having a predetermined average particle diameter were prepared, and after compounding and mixing these raw material fine powders according to a prescribed composition, the mixed powders were mixed under a pressure of 1 MPa. Press molding is performed to manufacture a molded body. Sintered bodies 1 to 8 of the present invention were produced by sintering the molded bodies under the conditions shown in Table 4.

[0097] In addition, for the purpose of comparison, under the conditions shown in Table 4, molded bodies (sample numbers 11 to 12 in Table 3) having a compound composition shown in Table 3 that deviate from the scope of the invention of the present application were sintered to produce a comparative product. Examples of sintered bodies 11-12.

[0098] In addition, similarly for the purpose of comparison, under the conditions shown in Table 4 (conditions outside the scope of the inven...

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Abstract

Provided is a super hard sintered body which contains 5-55% by mass of W, with the balance made up of WC and unavoidable impurities, and which is excellent in terms of high hardness and high strength.

Description

technical field [0001] The present invention relates to a sintered body having WC (tungsten carbide) particles known as a high-hardness, high-strength, and high-melting-point ceramic as a hard phase, and having excellent affinity with the WC and WC is also a metal tungsten (W) with high strength and high melting point as the binding phase. In addition, the sintered body according to the present invention has excellent high-temperature hardness and high-temperature strength, and is also excellent in compactness, so it is also excellent as a wear-resistant tool material such as a cutting tool tip material or a metal mold used at high temperature. [0002] This application claims priority based on Patent Application No. 2016-130613 for which it applied in Japan on June 30, 2016, and uses the content here. Background technique [0003] As a hard material using WC, a hard metal having Co as a metal binder phase is known. [0004] In a composite material composed of a ceramic ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08B23B27/14C22C1/05B22F1/054
CPCC22C1/05C22C29/08C22C32/0052B22F2998/10B22F2005/001B22F1/054B22F1/056C22C1/1084B22F3/105B22F3/14B23B27/14C04B35/5626C22C1/051
Inventor 西山昭雄矢野雅大森田进
Owner MITSUBISHI MATERIALS CORP