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Ceramic preform, preparation method thereof, ceramic wear-resistant structure and wear-resistant part

A technology of prefabricated body and wear-resistant parts is applied in the field of composite wear-resistant materials, which can solve the problems of inability to prepare to meet the wear-resistant requirements of special parts, and the degree of wear and strength are not equal, so as to improve wear-resistant toughness, not easily damaged or peeled off. , good wettability effect

Inactive Publication Date: 2019-12-27
ZHONGCAI HIGH NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the actual application process of industrial wear-resistant equipment, different parts of the wear-resistant parts are subject to different wear degrees and strengths, and a single pressing mold cannot be prepared to meet the wear-resistant requirements of special parts.

Method used

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  • Ceramic preform, preparation method thereof, ceramic wear-resistant structure and wear-resistant part
  • Ceramic preform, preparation method thereof, ceramic wear-resistant structure and wear-resistant part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation process of the ceramic preform of the present embodiment is:

[0035] S1, a certain amount of photoinitiator TPO (2,4,6-trimethylbenzoyl-diphenylphosphine oxide) is added in the dipropylene glycol acrylate in the darkroom, wherein, acrylic resin and photoinitiator The weight ratio is 70:0.2, fully stirred for about 20-30 minutes to completely dissolve the photoinitiator, and obtain a uniform and stable photocurable resin system;

[0036] S2, 9 parts by weight of dispersant ammonium polyacrylate, 1 part by weight of auxiliary agent (the weight ratio of leveling agent, defoamer and polymerization inhibitor is 1:1:1), 10 parts by weight of zirconia powder and 25 parts by weight Alumina powder is mixed with 55 parts by weight of a uniform and stable photocurable resin system, and then placed in a stirring mill or a ball mill for uniform mixing to obtain a photocurable 3D printing ceramic slurry with high solid content and low viscosity. Among them, Al 2 o3...

Embodiment 2

[0045] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0046] The preparation process of the ceramic preform of the present embodiment is:

[0047] S1, a certain amount of photoinitiator 1173 (2-hydroxyl-2-methyl-1-phenyl-1-acetone) is added to tripropylene glycol diacrylate in a dark room, wherein the acrylic resin and photoinitiator The weight ratio is 95:5, fully stir for about 20-30 minutes to completely dissolve the photoinitiator, and obtain a uniform and stable photocurable resin system;

[0048] S2, 10 parts by weight of dispersant triethyl phosphate, 1 part by weight of auxiliary agent (the weight ratio of leveling agent, defoamer and polymerization inhibitor is 1:1:2), 9 parts by weight of zirconia powder and 45 parts by weight Mix 35 parts by weight of alumina powder with 35 parts by weight of a uniform and stable photocurable resi...

Embodiment 3

[0057] The features of this embodiment that are the same as those of Embodiment 1 will not be described in detail. The features of this embodiment that are different from Embodiment 1 are:

[0058] The preparation process of the ceramic preform of the present embodiment is:

[0059] S1. Add a certain amount of photoinitiator 819 [bis(2,4,6-trimethylbenzoyl) phenylphosphorus oxide] to bisphenol A epoxy acrylate in a dark room, wherein acrylic resin and light The weight ratio of the initiator is 80:2, fully stir for about 20-30 minutes to completely dissolve the photoinitiator, and obtain a uniform and stable photocurable resin system;

[0060] S2, 1 part by weight of dispersant castor oil, 0.1 part by weight of auxiliary agent (the weight ratio of leveling agent, defoamer and polymerization inhibitor is 1:1:1), 6 parts by weight of zirconia powder and 25 parts by weight of oxidation The aluminum powder is mixed with 35 parts by weight of a uniform and stable photocurable resin...

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Abstract

The invention relates to a ceramic preform, a preparation method thereof, a ceramic wear-resistant structure and a wear-resistant part. The preparation method comprises the following steps: sinteringa ceramic biscuit prepared on the basis of a photocuring 3D printing process, and carrying out nickel plating treatment to obtain the ceramic preform; the obtained ceramic preform is a hemispheroid ora sphere with a foam structure. Through arrangement of the semispherical or spherical structure, when the ceramic preform is subjected to external force action, the base body can provide the maximumsupporting effect for the outer surface; and because of nickel plating treatment, the preform has good wettability on casting molten metal, the molten metal can conveniently permeate into a cavity ofthe ceramic preform in a casting process to be compounded with the preform into a whole to play a supporting role, the overall wear resistance and toughness are improved, and the preform is firm in combination and not prone to damage and stripping. The ceramic preform or the ceramic wear-resistant structure is configured according to different wear degrees and strengths of different parts of the wear-resistant part, so that the wear-resistant requirements of special parts of the wear-resistant part are met, the overall wear-resistant toughness is improved, the service lifetime is prolonged, and the maintenance period is shortened.

Description

technical field [0001] The invention belongs to the field of composite wear-resistant materials, and in particular relates to a ceramic prefabricated body and a preparation method thereof, a ceramic wear-resistant structure and wear-resistant parts. Background technique [0002] Metal-ceramic composite materials are a type of composite materials prepared by combining the high hardness and wear resistance of ceramics with the high toughness of metals. They have great application prospects in wear-resistant fields such as cement, coal power or ore. The traditional process prepares the ceramic prefabricated body by dry pressing. After the surface is nickel-plated, it is placed in a sand mold and cast to obtain a metal-ceramic composite wear-resistant part. The wear resistance is better than that of a single metal wear-resistant material. [0003] However, in the actual application process of industrial wear-resistant equipment, different parts of the wear-resistant parts are su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B41/88C04B38/00C04B35/634C23C18/36C22C1/10B22D19/00B28B1/00B33Y10/00B33Y70/00B33Y80/00B02C15/00
CPCC04B35/10C04B41/88C04B41/5144C04B38/00C04B35/63424C23C18/36C23C18/1639C22C1/1015C22C1/101B22D19/00B28B1/001B33Y10/00B33Y70/00B33Y80/00B02C15/003C04B2235/3244C04B2235/6026C22C1/1021
Inventor 李伶屈忠宝陈学江王再义王营营刘时浩吕佳琪徐丹丹巩晓霖
Owner ZHONGCAI HIGH NEW MATERIAL
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