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Steel-iron based metal ceramic composite and integrated process for sintering and welding composite

A technology for iron-based metals and cermets, which is applied in metal layered products, chemical instruments and methods, layered products, etc., can solve the problems of expensive iron-based cermets, restricting the promotion and application of iron-based cermets, etc. Welding problems, easy to promote and use on a large scale, and the effect of reducing thermal stress

Active Publication Date: 2014-10-29
南京彬华新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron-based cermets are much more expensive than steel
Many application fields are very suitable for the application of iron-based cermets, but the overall iron-based cermets are too expensive, which restricts the promotion and application of iron-based cermets

Method used

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  • Steel-iron based metal ceramic composite and integrated process for sintering and welding composite

Examples

Experimental program
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Effect test

Embodiment 1

[0020] see figure 1 : A kind of steel and iron-based metal-ceramic composite body and its sintering and welding integration process, wherein the composite body is successively high ceramic layer, high metal layer, and metal layer from outside to inside, and the specific formula of the high ceramic layer is 50wt % of 400 mesh TiC powder, Fe powder is 39wt%, Mo powder is 1wt%, Ni powder is 3wt%, Cr powder is 7wt%; the transition layer is a high metal layer, and the specific formula is 25wt% 400 mesh TiC powder, Fe Powder is 62wt%, Mo powder is 1wt%, Ni powder is 4wt%, Cr powder is 8wt%; the particle size of the above metal powders is 200 mesh; the complex sintering and welding integration process is as follows, 1) After the good powders are mixed evenly, they pass through the mold, and the upper surface of the steel 3 is first laid with a high metal layer 2, also called a high metal transition layer, and then a high ceramic layer 1 is laid, and pressed to form an outer high cera...

Embodiment 2

[0021] Example 2: see figure 1, a steel and iron-based cermet composite body and its sintering and welding integration process, wherein the composite body consists of a high ceramic layer 1, a high metal layer 2, and a metal layer 3 from outside to inside, and the specific details of the high ceramic layer The formula is: 40wt% 400 mesh TiC powder, 47wt% Fe powder, 1wt% Mo powder, 4wt% Ni powder, 8wt% Cr powder; 400 mesh TiC powder of 20wt% inner layer formula, Fe powder is 67wt%, Mo powder is 1wt%, Ni powder is 4wt%, Cr powder is 8wt%; the particle size of the above metal powders are all 200 mesh. The details of the complex sintering and welding integration process are as follows: 1) After mixing the prepared powders evenly, pass through the mold, and lay the high metal layer 2 on the upper surface of the steel 3, also called the high metal transition layer, and then lay the High ceramic layer 1, pressed into a composite blank with an outer high ceramic layer, a high metal...

Embodiment 3

[0022] Example 3: see figure 1 , a steel and iron-based cermet composite body and its sintering and welding integration process, wherein the composite body consists of a high ceramic layer 1, a high metal layer 2, and a metal layer 3 from outside to inside, and the specific details of the high ceramic layer The formula is: 30wt% 400 mesh TiC powder, 57wt% Fe powder, 2wt% Mo powder, 4wt% Ni powder, 7wt% Cr powder; 400 mesh TiC powder of 15wt% inner layer formula, Fe powder is 72wt%, Mo powder 2wt%, Ni powder 4wt%, Cr powder 7wt%; the particle size of the above metal powders are all 200 mesh. The details of the complex sintering and welding integration process are as follows: 1) After mixing the prepared powders evenly, pass through the mold, and lay the high metal layer 2 on the upper surface of the steel 3, also called the high metal transition layer, and then lay the High ceramic layer 1, pressed into a composite blank with an outer high ceramic layer, a high metal transit...

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Abstract

The invention relates to a steel-iron based metal ceramic composite. The steel-iron based metal ceramic composite comprises a high-ceramic layer, a high-metal layer and a metal layer which are sequentially arranged from outside to inside, wherein the high-ceramic layer comprises the following components in percentage by weight: 30%-70% of 400-mesh TiC powder, 35%-60% of Fe powder, 1%-3% of Mo powder, 2%-5% of Ni powder and 6%-8% of Cr powder; the high-metal layer is a transition layer and comprises the following components in percentage by weight: 15%-25% of 400-mesh TiC powder, 60%-75% of Fe powder, 1%-2% of Mo powder, 3%-5% of Ni powder and 6%-9% of Cr powder.

Description

technical field [0001] The invention relates to a metal-ceramic composite body, in particular to a sintering and welding integrated process of steel and iron-based metal-ceramic composite body. Background technique [0002] Tungsten is a rare metal widely used in gun manufacturing, metal cutting blades, drill bits, superhard dies, wire drawing dies, etc. Tungsten has a wide range of uses, involving mining, metallurgy, machinery, construction, transportation, electronics, chemical industry, Light industry, textile, military industry, aerospace, science and technology, various industrial fields. Cobalt is not only an important metal for making alloy steel, but also an important raw material for various advanced pigments. Due to the limitation of tungsten and cobalt resources, many western countries focus on the development of tungsten-free cobalt cemented carbide with TiC ceramics as the reinforcement phase and nickel and nickel alloy as the binder phase, and have been mass-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04B32B15/01C22C29/10C22C38/44B22F7/04
Inventor 王华彬
Owner 南京彬华新材料有限公司
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