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Metal ceramic reinforced body

A technology of cermets and reinforcements, applied in the field of wear-resistant ceramics, can solve the problem of uneven distribution of metal phases and ceramic phases, increase wear resistance, improve interface bonding strength and improve overall performance, toughness and thermal shock resistance Effect

Active Publication Date: 2012-07-25
洛阳鹏飞耐磨材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of uneven distribution of metal phases and ceramic phases in the existing metal-based ceramics, the present invention provides a cermet reinforced body. Metal is poured into the ceramic reinforced body to form metal-based ceramics, which can make the metal fully absorb the ceramic particles. Wrapped, not only increased wear resistance and toughness, but also improved thermal shock resistance

Method used

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  • Metal ceramic reinforced body
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A metal-ceramic reinforcement, the preparation steps of which are as follows:

[0028] Step 1. According to the weight ratio, take 70 parts of zirconium corundum with a particle size of 2-5mm, and 30 parts of ferrochrome powder with a particle size of 150-500um, put them into a container, mix them evenly, and make a mixture;

[0029] Step 2, in the mixture that step 1 is made, add 10 parts of epoxy resins, mix evenly, obtain the mixture that contains organic binder;

[0030] Step 3, putting the mixture containing the organic binder into the mold prepared in advance, extruding and demoulding, and making a blank with multiple through holes;

[0031] Step 4. Send the billet into the drying room and let it dry naturally;

[0032] Step 5. Send the dried blank into a sintering kiln for sintering. The sintering temperature is 1200-1250°C and the sintering time is 5-8 hours.

Embodiment 2

[0034] A metal-ceramic reinforcement, the preparation steps of which are as follows:

[0035] Step 1. According to the weight ratio, take 95 parts of zirconium corundum with a particle size of 2-5mm, and 5 parts of ferrochrome powder with a particle size of 150-500um, put them into a container, mix them evenly, and make a mixture;

[0036] Step 2, in the mixture made in step 1, add 3 parts of polyvinyl chloride, mix evenly, obtain the mixture containing organic binder;

[0037] Step 3, putting the mixture containing the organic binder into the mold prepared in advance, extruding and demoulding, and making a blank with multiple through holes;

[0038] Step 4, sending the billet into the drying chamber and drying;

[0039] Step 5. Send the dried blank into a sintering kiln for sintering. The sintering temperature is 1200-1250°C and the sintering time is 5-8 hours.

Embodiment 3

[0041] A metal-ceramic reinforcement, the preparation steps of which are as follows:

[0042] Step 1. According to the weight ratio, take 83 parts of zirconium corundum with a particle size of 2-5mm and 17 parts of ferrochrome powder with a particle size of 150-500um, put them into a container, mix them evenly, and make a mixture;

[0043] Step 2, in the mixture made in step 1, add 7 parts of phenolic liquid resin, mix evenly, obtain the mixture containing organic binder;

[0044] Step 3, putting the mixture containing the organic binder into the mold prepared in advance, extruding and demoulding, and making a blank with multiple through holes;

[0045] Step 4. Send the billet into the drying room, and let it air dry or dry naturally;

[0046] Step 5. Send the dried blank into a sintering kiln for sintering. The sintering temperature is 1200-1250°C and the sintering time is 5-8 hours.

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Abstract

The invention discloses a metal ceramic reinforced body which is formed by zirconia alumina, Cr-Fe powder and an organic binding agent after being sintered. A plurality of through holes are uniformly arranged on a sintered and moulded block body; the through holes are arranged on the upper end face and the lower end face, and through grooves are arranged on four side faces. According to the metal ceramic reinforced body, grooves at edge portions of two adjacent reinforced bodies form an intact through hole after different reinforced bodies are spliced together, and metal liquid is poured into the through holes, so that metallic phase can infiltrate among ceramic particles and uniformly wrap ceramic phase. Not only toughness and abrasive resistance of product ceramic are enhanced, but also heat-vibration resistance is improved.

Description

technical field [0001] The invention relates to the field of wear-resistant ceramics, in particular to a cermet reinforcement. Background technique [0002] In the field of powder processing such as cement, it is necessary to use a mill to grind the raw materials to a certain fineness, but most of the wear-resistant blocks used are made of high-manganese steel and other metals as wear-resistant blocks, which have good toughness, but due to the use of piles It takes a long time to replace the wear-resistant block each time, which seriously affects the production efficiency. [0003] Wear-resistant ceramic blocks are also used to replace metal grinding bodies. The wear-resistant ceramic sheets in the prior art are mainly composed of cermet materials with aluminum oxide as the ceramic phase, which have the basic properties of ceramics, that is, high hardness and High temperature resistance, so the hardness and wear resistance of the wear-resistant ceramic sheet made of this ma...

Claims

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Application Information

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IPC IPC(8): B22D19/14
Inventor 贾剑光贾玉川王书正杨建森
Owner 洛阳鹏飞耐磨材料股份有限公司
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