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Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof

A composite material and ceramic technology, used in steel mills or cement mills, coal mill grinding rollers and grinding discs, ceramic mesh reinforced metal wear-resistant composite materials and preparation, power plants, and can solve complex processes, difficult oxide ceramic penetration, etc. problem, to achieve the effect of simple process and high wear resistance

Active Publication Date: 2011-10-26
NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process solves the problem of difficult penetration of oxide ceramics, and the ceramic particles are well combined with the molten metal, but the process is still relatively complicated, and the combination of particles and metal is still mechanical in nature.

Method used

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  • Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof
  • Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof
  • Ceramic grid-enhanced metal wear-resistant composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Coal Pulverizer Grinding Disc

[0031] (1) With the grinding disc liner of the coal mill as the main body, grooves are set on the surface of the main body;

[0032] (2) Put the sintered ceramic grid into the groove of the liner. There is a gap between the ceramic grid and the body. The gap and the surface are filled with suitable self-fluxing alloy powder mixed with anhydrous ethanol. The amount of water ethanol added is 1% to 4% of the mass of the self-fluxing alloy powder, and the grid holes are also filled with suitable self-fluxing alloy powder mixed with absolute ethanol, and then the wear-resistant parts are placed on the Dry at 80℃~100℃;

[0033] (3) Put the dried liner as a whole into a vacuum furnace for sintering at a temperature of 1000 ° C to 1150 ° C and a vacuum degree of 0.1 Pa. The self-fluxing alloy powder will melt and form a firm bond with the bottom, side and surface of the wear-resistant parts. Metallurgically bonded, the ceramic grid i...

Embodiment 2

[0035] Embodiment 2: Grinding roller of coal mill

[0036] (1) With the lining plate on the surface of the grinding roller of the coal mill as the main body, grooves are set on the surface of the main body;

[0037] (2) Put the sintered ceramic grid into the groove of the liner, there is a gap between the ceramic grid and the body, and the gap and the surface are filled with suitable self-fluxing alloy powder mixed with absolute ethanol, without The amount of water ethanol added is 1% to 4% of the mass of the self-fluxing alloy powder, and the grid holes are also filled with suitable self-fluxing alloy powder mixed with absolute ethanol, and then the wear-resistant parts are placed on the Dry at 80℃~100℃;

[0038] (3) Put the dried liner as a whole into a vacuum furnace for sintering at a temperature of 1000 ° C to 1150 ° C and a vacuum degree of 0.1 Pa. The self-fluxing alloy powder will melt and form a firm bond with the bottom, side and surface of the wear-resistant parts....

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Abstract

The invention discloses a ceramic grid-enhanced metal wear-resistant composite and a preparation method thereof, wherein the ceramic grid-enhanced metal wear-resistant composite consists of a metal-base wear-resistant part body, a groove is arranged on the surface of the metal-base wear-resistant part body and internally provided with a ceramic grid, a clearance is reserved between the ceramic grid and the metal-base wear-resistant part body, and self-fluxing alloy powder sintering body in metallurgy combination with the metal-base wear-resistant part body is arranged in the clearance and themeshes of the ceramic grid. In the invention, under the vacuum sintering state, the ceramic grid can not produce defects such as cracking, breaking and the like; the self-fluxing alloy and the wear-resistant part matrix are in metallurgy combination, so that the combination with the ceramic grid is firm; the process is simple, and the prepared materials can achieve the needed hardness without thermal treatment; and the difficultly in combining the ceramic with the metal matrix can be solved, and the defects brought by s pouring process can be avoided.

Description

technical field [0001] The invention relates to a ceramic mesh-reinforced metal wear-resistant composite material and a preparation method thereof. The invention belongs to the field of metal-based composite material preparation, and is especially suitable for grinding rollers and grinding discs of coal pulverizers in power plants, steel plants or cement plants. Background technique [0002] Abrasion is a basic type of component failure, which is commonly found in many industrial sectors such as metallurgy, mining, electric power, machinery, national defense, military industry, aerospace, etc., which causes a huge waste of materials and a huge consumption of energy. According to incomplete statistics, at present, the annual consumption of metal wear-resistant materials in China is as high as 5 million tons, of which the annual consumption of ball mill steel balls due to wear reaches 1 million tons, ball mills and various crusher liners consume nearly 400,000 tons, and roll c...

Claims

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Application Information

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IPC IPC(8): B22F7/08
Inventor 钱兵
Owner NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD
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