Array type ceramic preform sintering unit monomer and high-throughput pressureless sintering method

A prefabricated and arrayed technology, applied in the field of wear-resistant material preparation, can solve the problems of easy collapse of ceramic preforms, low high-temperature strength of preforms, poor applicability, etc., to achieve high-flux pressureless sintering and improve interface bonding strength. , the effect of saving the development cycle
CN112456980BActive Publication Date: 2021-09-07XI AN JIAOTONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2021-09-07

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Abstract

The invention discloses an array type ceramic prefabricated body sintering unit monomer and a high-throughput pressureless sintering method. The ceramic particles are surface modified, mechanically mixed with alloy powder, and placed in a graphite mold for pre-pressing to form a sintered monomer. . Then it is sintered in a high-throughput vacuum pressureless sintering furnace. The present invention realizes the preparation of a single-batch, high-throughput ceramic particle preform by controlling the ceramic particle components, dimensions, surface modification method, alloy powder composition and addition amount in the sintering unit of the ceramic preform. The prepared prefabricated body can be widely used in the wear-resistant layer required for the preparation of wear-resistant composite materials such as grinding rollers, blow bars, hammer heads, bucket teeth, liners, impellers, and reamer heads. At the same time, it has the advantages of simple operation, low cost, The advantage of high efficiency.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of wear-resistant materials, and in particular relates to a sintering unit monomer of an array type ceramic preform and a high-throughput pressureless sintering method. Background technique

[0002] Iron-based composite materials are widely used in key sectors of the national economy such as metallurgy and mining, and ceramic prefabricated bodies are important reinforcements for iron-based composite materials. Conventional methods for preparing ceramic preforms usually use organic binders for bonding, and then solidify to form preforms, which have the disadvantages of low high-temperature strength of preforms and easy collapse of ceramic preforms during pouring of molten metal. Moreover, only the method of solidifying ceramic particles with an organic binder cannot improve the bonding characteristics of the interface between the ceramic particles and the iron matrix, such as wettability and in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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