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Ceramic reinforced metal matrix abrasion-resisting compound material and preparation method

A composite material and metal-based technology, which is applied in the field of ceramic-reinforced metal-based wear-resistant composite materials and its preparation, can solve problems such as difficult penetration and complicated process, and achieve the effects of ensuring wear resistance, simple process, and impact resistance

Inactive Publication Date: 2011-10-12
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 reinforced metal matrix abrasion-resisting compound material and preparation method
  • Ceramic reinforced metal matrix abrasion-resisting compound material and preparation method
  • Ceramic reinforced metal matrix abrasion-resisting compound material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Crusher Hammer

[0040] (1) With the hammer head of the crusher as the main body 1, a plurality of blind holes are set on the surface of the main body;

[0041] (2) Put the sintered ceramic rod 2 into the hole of the hammer head, there is a gap between the ceramic rod and the body, and the gap is filled with suitable self-fluxing alloy powder 3; among them, in the self-fluxing alloy powder, there is no The amount of water and ethanol added is 1% to 4% of the powder mass; then the hammer head is placed as a whole at 80°C to 100°C to dry.

[0042] (3) Put the dried crusher hammer head into a vacuum furnace for sintering at a temperature of 1000°C to 1150°C and a vacuum degree of 0.1Pa. The self-fluxing alloy powder will melt and form a firm metallurgical bond with the crusher hammer head matrix. Combination, metallurgical bonding with cermet rods also occurs. If the ceramic rods are oxide ceramics, nitride ceramics, and carbide ceramics, the ceramic rods are d...

Embodiment 2

[0045] Step (2) is changed to: mix self-fluxing alloy powder and ceramic particles with absolute ethanol to form a mixture, and fill it in the hole of the hammer head. In the mixture, the ratio of ceramic particles to self-fluxing alloy powder 5 is 1:0.6~1.2, the amount of absolute ethanol added is 2%~6% of the mass of self-fluxing alloy powder.

[0046]After sintering in step (3), the self-fluxing alloy in the mixed particles melts and forms a firm metallurgical bond with the crusher hammer base 4, and the ceramic particles are also firmly wrapped by the self-fluxing alloy.

[0047] All the other are with embodiment 1.

Embodiment 3

[0048] Embodiment 3: Grinding roller of coal mill

[0049] (1) With the coal mill roller liner as the main body, multiple blind holes are set on the surface of the main body;

[0050] (2) Put the sintered ceramic rod into the hole of the grinding roller liner of the coal mill, there is a gap between the ceramic rod and the body, and the gap is filled with suitable self-fluxing alloy powder; among them, the self-fluxing alloy powder In the process, the amount of absolute ethanol added is 1% to 4% of the powder mass; then the whole lining board is placed at 80°C to 100°C to dry.

[0051] (3) Put the dried coal mill roller liner as a whole into a vacuum furnace for sintering at a temperature of 1000°C to 1150°C and a vacuum of 0.1Pa, and the self-fluxing alloy powder will melt and bond with the coal mill roller lining The plate matrix produces a firm metallurgical bond, and also produces a metallurgical bond with the cermet rod. If the ceramic rod is an oxide ceramic, nitride ce...

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Abstract

The invention discloses a ceramic reinforced metal matrix abrasion-resisting compound material and a preparation method. The compound material comprises a metal matrix abrasion-resisting component body, wherein a plurality of blind holes are formed on the surface of the metal matrix abrasion-resisting component body, and self-fluxing alloy powder metallurgically bonded with the metal matrix abrasion-resisting component body and ceramic sintering bodies are arranged in the blinding holes. At a sintering temperature of a vacuum furnace, the self-fluxing alloy powder is fused and is metallurgically bonded with the abrasion-resisting component body while the abrasion-resisting component body and the ceramic are not deformed. The process is simple and the prepared material with a required hardness can be acquired without being subjected to the heat treatment. By using the preparation method, the problem that the ceramic is difficult to be bonded with a metal substrate is solved and the defect caused by a pouring process is avoided. The ceramic, alloy and metal on the surface of the abrasion-resisting component are regularly distributed, the abrasion resistance of the abrasion-resisting component is ensured and the shock resistance is also ensured.

Description

technical field [0001] The invention relates to a ceramic-reinforced metal-based wear-resistant composite material and a preparation method thereof. It belongs to the field of ceramic-reinforced metal-matrix composite materials, and is especially suitable for coal mill grinding rollers or grinding discs, crusher hammers, blow bars, large cement grinding rollers and grinding discs, etc. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/08
Inventor 钱兵
Owner NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD
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