Reusable silicon nitride ceramic pouring cup

Abstract

A reusable silicon nitride ceramic pouring cup is characterized by comprising a pouring cup body, a pouring gate frame positioning hole is formed in the outer side of the pouring cup body, an inner cavity is formed in the pouring cup body, a mesh placing table is arranged at the lower end of the inner cavity, a pouring gate is arranged in the mesh placing table, electric heating rings are arrangedon the outer wall of the pouring cup body, and heat-conducting glue is arranged on the electric heating rings. A positioning shoulder is arranged below the walls of the electric heating rings, a positioning hole is formed in the positioning shoulder, a positioning ring is arranged on the positioning shoulder, and a thermocouple is arranged on the pouring cup outer wall at the lower end. The pouring cup which is provided with the positioning shoulder and is prepared by high-density silicon nitride ceramic is adopted to replace a disposable pouring cup, a reusable metal and coating pouring cupand a reusable pouring cup made of high-density, high-purity and high-strength graphite, so that not only is the center of a product condensed in a mold conveniently punched, a hole material and a feeding head are ejected out of the pouring cup, pouring is facilitated, and the density value of the center of the product improved, but also a subsequent punching process of the product is reduced, andthe production cost is reduced.

Description

technical field [0001] The application relates to the field of aluminum alloy casting, in particular to a reusable silicon nitride ceramic sprue cup. Background technique [0002] In the field of aluminum alloy casting, metal mold gravity casting is the most commonly used form of mass production, but the gate used is made of disposable coated sand products. The corresponding manpower, materials, electricity, and occupied a lot of space, high energy consumption, waste, and pollution; the existing metal and paint reusable sprue cups, reusable sprue cups made of three high graphite in the product After forming, it is necessary to drill holes under the gate through the next process, and the manufacturing cost of the product is high; the manufacturing of ceramic gates with positioning rings is also very difficult. Contents of the invention [0003] The present application aims at the above problems and provides a reusable silicon nitride ceramic sprue cup, which reduces produc...

AI Technical Summary

Problems solved by technology

[0002] In the field of aluminum alloy casting, metal mold gravity casting is the most commonly used form of mass production, but the gate used is made of disposable coated sand products. The corresponding manpower, materials, electricity, and occupied a lot of space, high energy consumption, waste, and pollution; the existing metal and paint reusable sprue cups, reusable sprue cups made of three high graphite in the product After forming, it is necessary to drill holes under the gate through the next process, and the manufacturing cost of the product is high; it is difficult to manufacture ceramic gates with positioning rings

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