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

Abstract

The invention relates to a production process of a high-temperature structural ceramic/metal composite material tube for an aluminum alloy die casting machine. The composite material tube comprises a ceramic lining, a metal jacket and an end cover. The production process of the composite material tube comprises the steps of machining the ceramic lining, machining the metal jacket and the end cover, and assembling and matching the ceramic lining, the metal jacket and the end cover. A ceramic lining machining process comprises the steps of raw material preparation, grinding and pulping, workpiece forming, green body drying, high-temperature firing and inner and outer circle machining. A metal jacket and end cover machining process comprises the steps of metal tube and end cover cutting and blanking, metal tube and end cover inner and outer circle rough machining, heat treatment and metal tube and end cover inner and outer circle finish machining. A ceramic lining, metal jacket and end cover assembling and matching process includes the steps of measurement inspection, combined assembly and thermal adaptation testing. A metal tube and a ceramic tube are compounded, so that the alloy melt corrosion resistance and the wear resistance of the material tube are greatly improved, and the service life is long; the composite material tube is low in heat conductivity coefficient, and energy consumption is reduced; and strength and toughness are good, the manufacturing cost is low, and production period is short.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy casting industry, and in particular relates to a production process of a high-temperature structural ceramic / metal composite material tube for an aluminum alloy die-casting machine. Background technique [0002] Aluminum alloy die-casting machine is a molding equipment that quickly pressurizes the melted and refined high-temperature aluminum alloy melt into the mold, and forms aluminum alloy castings after cooling. At present, 70% of aluminum alloy castings are produced by high pressure cold chamber die casting. Driven by the injection rod, through the three processes of slow injection, fast injection and pressurization, the melt in the material tube is pushed into the mold, the molten aluminum is quickly cooled and formed in the mold, and the injection head is retracted The tail end of the material pipe restarts the operation of the next cycle. The material tube is a key consumable part ...

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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