Production process of high-temperature structural ceramic/metal composite pipe for aluminum alloy die-casting machine

Abstract

The invention relates to a production process of a high-temperature structural ceramic / metal composite pipe for an aluminum alloy die-casting machine. The composite pipe includes a ceramic inner lining, a metal jacket and an end cap; the production process of the composite pipe includes ceramic lining processing, a metal jacket and an end cap Processing, ceramic lining, metal jacket and end cap assembly and adaptation; ceramic lining processing technology includes raw material preparation, grinding and pulping, workpiece molding, green body drying, high temperature firing, inner and outer circle processing; metal jacket and end cap processing technology Including cutting and blanking of metal pipes and end caps, rough machining of inner and outer circles of metal pipes and end caps, heat treatment, finishing machining of inner and outer circles of metal pipes and end caps; assembly and adaptation process of ceramic linings and metal jackets, end caps including measurement inspection, combination Assembly, thermal adaptation test. Through the composite of metal tube and ceramic tube, the corrosion resistance and wear resistance of the material tube are greatly improved, and the service life is long; the thermal conductivity of the composite material tube is low, and the energy consumption is reduced; the strength and toughness are good, and the manufacturing cost is low. The production cycle is short.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy casting industry, and particularly relates to a production process of a high-temperature structural ceramic / metal composite material pipe for an aluminum alloy die-casting machine. Background technique [0002] The aluminum alloy die-casting machine is a molding equipment that rapidly pressurizes the melted and refined high-temperature aluminum alloy melt into a mold, and then forms an aluminum alloy casting after cooling. At present, 70% of the aluminum alloy castings are produced by high-pressure cold chamber die casting. During the production process, a spoon is used to pour the smelted aluminum alloy melt into the material pipe from the gate of the material pipe, and the injection head at the end of the material pipe is used. Under the push of the injection rod, through the three processes of slow injection, rapid injection and pressurization, the molten metal in the material tube is pu...

AI Technical Summary

Problems solved by technology

[0005] In order to improve the service life of the material pipe on the large-tonnage die-casting machine, some people try to use S1.2888 heat-resistant alloy steel imported from Germany with better corrosion resistance and better thermodynamic properties to make the material pipe. The actual test proves that its service life has reached 2 to 3 times that of H13 material tube, but the manufacturing cost of this material tube is nearly 20 times that of H13 material tube, which has no practical application value

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