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Ceramic grid enhanced metal matrix composite perform and preparation method thereof

A technology of metal matrix composite and prefabricated body, which is applied in the field of ceramic grid reinforced metal matrix composite prefabricated body and its preparation, to achieve the effects of long wear life, improved wear resistance and high bonding strength

Active Publication Date: 2013-06-05
NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to apply 10-60mm self-fluxing alloy materials to the surface of wear-resistant parts to strengthen steel-based composite materials has not been reported in China

Method used

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  • Ceramic grid enhanced metal matrix composite perform and preparation method thereof
  • Ceramic grid enhanced metal matrix composite perform and preparation method thereof
  • Ceramic grid enhanced metal matrix composite perform and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Mix zirconia particles with a particle size of 8-30 mesh and iron-based self-fluxing alloy powder with polyvinyl alcohol to obtain a mixture, wherein the volume ratio of ceramic particles and iron-based self-fluxing alloy powder is 1:19 , the amount of polyvinyl alcohol added is 2% of the ceramic mass;

[0037] (2) Fill the above mixture into the grid cavity, pre-press to form a ceramic grid, and then fill the grid hole with iron-based self-fluxing alloy powder after the grid is demoulded, and then use 100~ Pressing with 300 kg of force, after molding and demoulding, put the biscuit together with the bottom plate of the cavity into a drying oven at 150°C for 2 hours to dry;

[0038] (3) Put the dried biscuit together with the bottom plate of the mold cavity into a vacuum furnace for sintering at a temperature of 1150°C and a vacuum degree of 0.1 Pa for 40 minutes, and after cooling out of the furnace, a ceramic grid-reinforced metal matrix composite preform is obtai...

Embodiment 2

[0044] (1) Mix tungsten carbide particles with a particle size of 8-30 mesh and iron-based self-fluxing alloy powder with polyvinyl alcohol to obtain a mixture, wherein the volume ratio of ceramic particles and iron-based self-fluxing alloy powder is 1:4 , the amount of polyvinyl alcohol added is 1% of the ceramic mass;

[0045] (2) Fill the above mixture into the grid cavity, pre-press to form a ceramic grid, and then fill the grid hole with iron-based self-fluxing alloy powder after the grid is demoulded, and then use 100~ Pressing with 300 kg of force, after molding and demoulding, put the biscuit together with the bottom plate of the cavity into a drying oven at 150°C for 2 hours to dry;

[0046] (3) Put the dried biscuit together with the bottom plate of the mold cavity into a vacuum furnace for sintering at a temperature of 1000°C and a vacuum degree of 0.1 Pa for 30 minutes. After cooling out of the furnace, a ceramic grid-reinforced metal matrix composite preform is ob...

Embodiment 3

[0051] (1) Mix silicon carbide particles with a particle size of 8-30 mesh and nickel-based self-fluxing alloy powder with polyvinyl alcohol to obtain a mixture, wherein the volume ratio of ceramic particles and nickel-based self-fluxing alloy powder is 1:1 , the amount of polyvinyl alcohol added is 6% of the ceramic mass;

[0052] (2) Fill the above mixture into the grid cavity, and pre-press it into a ceramic grid with appropriate pressure. After the grid is demoulded, fill the grid hole with nickel-based self-fluxing alloy powder. The whole material is then made of 100 ~300 kg force pressing, after molding and demoulding, put the biscuit together with the bottom plate of the cavity into a 150°C drying oven to dry for 2 hours;

[0053] (3) Put the dried biscuit together with the bottom plate of the mold cavity into a vacuum furnace for sintering at a temperature of 1300°C and a vacuum degree of 0.1 Pa for 60 minutes, and after cooling out of the furnace, a ceramic grid-reinf...

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Abstract

The invention discloses a ceramic grid enhanced metal matrix composite perform and a preparation method thereof. The preparation method comprises the following steps of: uniformly mixing ceramic particles with the particle sizes of 8-30 meshes and self-fluxing alloy powder in polyvinyl alcohol to obtain a mixture; filling the mixture in a grid cavity, prepressing for preparing ceramic grids, filling the self-fluxing alloy powder into grid holes after the grids leave from a mold, wherein the monolithic material is pressed with 100-300 kilogram force, molding and demolding, placing and drying a biscuit and a mold cavity bottom plate in a 150 DEG C drying oven for 2 hours; placing the dried biscuit and the mold cavity bottom plate in a vacuum furnace, sintering for 30-90 minutes under the conditions that the temperature is 1000-1300 DEG C, and the vacuum degree is 0.1 Pa, and cooling and discharging to obtain the ceramic grid enhanced metal matrix composite perform. The ceramic grid enhanced metal matrix composite perform prepared by the method has the advantages of high density, uniform distribution of ceramic particles, good wear resistance and high grinding efficiency.

Description

technical field [0001] The invention relates to a ceramic grid-reinforced metal matrix composite prefabricated body and a preparation method thereof. Background technique [0002] The wearing parts of equipment in electric power, cement, mining, metallurgy, coal and other industries are worn by various materials and grinding bodies such as coal mines, sandstone, soil, etc., and consume a large amount of metal every year. With incomplete statistics, 1 of the energy / 3~1 / 2 consumption is related to friction and wear. It is more and more important to develop a kind of wear-resistant composite material with long service life under harsh wear working environment. [0003] Over the years, the process research of particle reinforced steel matrix composites has been one of the major topics in composites research, and some achievements have been made. [0004] The Chinese invention patent (CN101585081A) adopts a binder and a special mold to prepare a ceramic particle reinforcement,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C47/14C22C49/08C22C121/00C22C101/00
Inventor 钱兵
Owner NANTONG GAOXIN ANTIWEAR MATERIALS TECH CO LTD
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