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Preparation method of wear-resistant composite material and preparation method of wear-resistant composite material casting

A composite material and composite molding technology, which is applied in the preparation of wear-resistant composite material castings and the preparation of wear-resistant composite materials, can solve the problem of low bonding strength of the composite interface between ceramic particles and metal matrix, so as to increase thickness and improve wear resistance Performance, the effect of improving mechanical properties

Active Publication Date: 2020-05-01
SONGSHAN LAKE MATERIALS LAB
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the embodiments of the present application includes providing a method for preparing a wear-resistant composite material and a method for preparing a wear-resistant composite material casting, so as to improve the technical problem of low bonding strength at the composite interface between ceramic particles and metal matrix

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  • Preparation method of wear-resistant composite material and preparation method of wear-resistant composite material casting
  • Preparation method of wear-resistant composite material and preparation method of wear-resistant composite material casting
  • Preparation method of wear-resistant composite material and preparation method of wear-resistant composite material casting

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preparation example Construction

[0035] The embodiment of the present application provides a method for preparing a wear-resistant composite material, including: under the condition of a pressure of 10MPa-200Mpa, high-pressure composite molding of a metal melt and a preheated porous ceramic preform in a metal mold .

[0036] In some embodiments of the present application, the preparation step of the porous ceramic preform includes: by weight, 900-1100 parts of ceramic particles, 15-55 parts of nano-alumina powder, 0.1-1 part of nano-cerium oxide, 0.1-1 part of nano-yttrium oxide, 0.1-1 part of titanium dioxide, 0.5-5 parts of kaolin and 2.5-10 parts of silicon dioxide are fully mixed; then add 30-90 parts of liquid inorganic glue and stir and mix, and put the mixture and metal frame into the mold The porous ceramic preform is made in the

[0037] The porous ceramic preform prepared by the above method has better bonding strength, which makes the preform have better stability during the high-pressure composit...

Embodiment 1

[0051] This embodiment provides a method for preparing a wear-resistant composite material, including:

[0052] Step 1: The ceramic powder is ZTA particles, the particle size is 10 mesh, and 1000 parts of ZTA ceramic particles, 25 parts of nano-alumina powder, 1 part of nano-cerium oxide, 0.1-1 part of nano-yttrium oxide, and 1 part of titanium dioxide are prepared in parts by mass. 5 parts of kaolin, 5 parts of silica, mixed evenly, add 50 parts of liquid inorganic glue and stir well, put it into a tough metal frame, and make a porous prefabricated body in a special mold;

[0053] Step 2: Roast the porous preform at 80°C and 150°C for 2 hours respectively;

[0054] Step 3: Place the shaped and preheated porous prefabricated body in the set position of the cavity to fix it, pour an appropriate amount of metal melt, and use high-pressure composite molding technology to place the ZTA ceramic prefabricated body and high-chromium cast iron under a pressure of 120MPa High-pressure...

Embodiment 2

[0058] This embodiment provides a method for preparing a wear-resistant composite material, including:

[0059] Step 1: The ceramic powder is ZTA particles, and the particle size is 20 meshes. In parts by mass, 1000 parts of ZTA ceramic particles, 25 parts of nano-alumina powder, 1 part of nano-cerium oxide, 0.1-1 part of nano-yttrium oxide, and 1 part of titanium dioxide 1 part, 3 parts of kaolin, and 10 parts of silicon dioxide are uniformly mixed, and 40 parts of liquid inorganic glue are added and stirred thoroughly, and after being put into a tough metal frame, a porous prefabricated body is made in a special mold;

[0060] Step 2: Baking the porous preform at a high temperature of 150°C for 2 hours;

[0061] Step 3: Place the shaped and preheated porous preform in the set position of the cavity and fix it, pour an appropriate amount of metal melt, and use the high-pressure composite molding process to place the ZTA ceramic preform and high-chromium cast iron under a pres...

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Abstract

The invention relates to a preparation method of a wear-resistant composite material and a preparation method of a wear-resistant composite material casting, and belongs to the technical field of novel material preparation. The preparation method of the wear-resistant composite material casting comprises the step that under the condition that the pressure intensity is 10 MPa to 200 MPa, a metal melt and a porous ceramic prefabricated body subjected to preheating treatment are subjected to high-pressure compound molding in a metal mold. A high-pressure compound molding process is used for pressing the porous ceramic prefabricated body and the metal melt; a metal matrix structure is refined; meanwhile, the ceramic and metal interface bonding strength is improved, so that a metal matrix tightly wraps ceramic particles; and the wear-resistant performance of the composite material is greatly improved.

Description

technical field [0001] The present application relates to the technical field of preparation of new materials, and in particular to a preparation method of a wear-resistant composite material and a preparation method of a wear-resistant composite material casting. Background technique [0002] With the continuous development of modern industry, the consumption of wear-resistant materials is increasing day by day, and traditional steel materials have been difficult to meet the needs of materials for wear resistance. Ceramic particle-reinforced metal-based wear-resistant composite materials have both the high hardness and high wear resistance of ceramics and the good toughness of metals, which solves the contradiction between high hardness and toughness in traditional steel materials. [0003] At present, there are mainly the following methods for the preparation of ceramic particle reinforced metal matrix composites at home and abroad. The first method uses the casting infil...

Claims

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Application Information

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IPC IPC(8): C22C1/10B22D23/04
CPCC22C1/1015C22C1/1036B22D23/04C22C1/1021C22C1/1073
Inventor 贾继欣付超孔凡磊任志恒万伟刘肖林育君战斗
Owner SONGSHAN LAKE MATERIALS LAB
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