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Vacuum-air pressure casting method of three-dimensional network ceramic-metal friction composite material

A three-dimensional network and metal technology, applied in the field of casting, can solve the problems such as the inability to realize the composite of low-melting point metal and three-dimensional network ceramics, the inability to effectively guarantee the casting accuracy, and the many casting processes, so as to avoid quality defects, high utilization of raw materials, The effect of reducing production costs

Inactive Publication Date: 2015-07-01
QINGDAO YUGUANG PRECISION CASTING FACTORY
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AI Technical Summary

Problems solved by technology

[0004] The casting process of ceramic-metal materials generally includes the steps of pretreatment of three-dimensional network ceramic skeleton, mold treatment and metal melting and casting. Too many, affecting production capacity, and the accuracy of castings cannot be effectively guaranteed, and the scrap rate is high

Method used

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Embodiment

[0015] The vacuum-air pressure casting method of the three-dimensional network ceramic-metal friction composite material of this embodiment includes the following steps:

[0016] (1) Pretreatment of the three-dimensional network ceramic skeleton, the three-dimensional network ceramic skeleton adopts SiC, B 4 C.Si 3 N 4 、Al 2 o 3 , ZrO 2 Or mullite ceramic material, for three-dimensional network SiC, B 4 C or Si 3 N 4 The pretreatment of the ceramic skeleton adopts one of the methods of surface preoxidation treatment or inorganic modification or powder metallurgy treatment method, and the three-dimensional network Al 2 o 3 , ZrO 2 Or mullite ceramic skeleton is pretreated, and a layer of high melting point metal is coated by electroplating or powder metallurgy;

[0017] (2) Mold treatment, coating a layer of boron nitride or metal oxide containing Al, Si or Ca on the surface of the metal mold;

[0018] (3) Melting and casting of metal, put the surface-treated three-d...

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Abstract

The invention discloses a vacuum-air pressure casting method of a three-dimensional network ceramic-metal friction composite material. The method comprises the process steps of pretreatment of a three-dimensional network ceramic skeleton, mold treatment and casting of metal. The three-dimensional network ceramic skeleton adopts SiC, B4C, Si3N4, Al2O3, ZrO2 or a mullite ceramic material; and the metal adopts aluminum or an aluminum alloy or a copper alloy or a titanium alloy or a steel and iron material. The pretreatment of the three-dimensional network ceramic skeleton can adopt the surface preoxidation treatment, the inorganic matter modification, the electroplating coating or the powder metallurgy method to diffuse and sinter a layer of high-melting point metal. The casting of the metal is performed in a vacuum-air pressure casting furnace. The method can prepare network ceramic-metal composite materials with different ceramic contents and different three-dimensional network apertures, can realize the compounding of low-melting point metal and three-dimensional network ceramic, and can prepare the three-dimensional network ceramic-metal friction composite material with a continuous bonding interface for the copper alloy or the steel and iron material with a higher melting point.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a vacuum-air pressure casting method of a three-dimensional network ceramic-metal friction composite material. [0003] Background technique [0004] The casting process of ceramic-metal materials generally includes the steps of pretreatment of three-dimensional network ceramic skeleton, mold treatment and metal melting and casting. If there are too many, the production capacity will be affected. At the same time, the accuracy of the castings cannot be effectively guaranteed, and the scrap rate is high. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a vacuum-air pressure casting method for a three-dimensional network ceramic-metal friction composite material, which can directly cast a three-dimensional network cer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/04
Inventor 陈玉光
Owner QINGDAO YUGUANG PRECISION CASTING FACTORY
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