Casting material and method for fusible mold

Abstract

The invention provides a material for casting a fusible mold. The material for casting the fusible mold is composed of the following raw materials of, by weight, 60-100 parts of ductile cast iron, 10-30 parts of silicon iron, 10-30 parts of scrap tin products, 15-30 parts of scrap aluminium products, 25-35 parts of ethylene copolymer elastomer, 23-38 parts of nano calcium carbonate, 18-35 parts ofethylene-acrylate, 30-40 parts of crystalline flake graphite, 16-27 parts of a carburant, 4-8 parts of hollow glass microsphere, 3-8 parts of bentonite, 5-13 parts of wood fiber with the mesh being 100-230, 6-14 parts of kieselguhr with the mesh being 100-200, 8-11 parts of open hole expanded perlite with the mesh being 60-150, 5-9 parts of light paint plaster, 5-9 parts of a casting nucleating agent and 3-7 parts of a slag removal agent. The fusible mold is cast by performing heating melting, slagging-off, slag gathering, keeping warm and pouring on the raw materials in sequence. The castingmaterial and method for the fusible mold have the beneficial effects that (1), the casting material flows evenly, the phenomenon of sticky slag existing on a final cast blank is avoided, the acceptedproduct rate is increased, and the production efficiency is improved at the same time; (2), the casting method is simple, the cost is low, and meanwhile the service life of the final fusible mold ismade to be prolonged.

Description

technical field [0001] The invention relates to the technical field of investment casting, in particular to a material for investment casting and a casting method. Background technique [0002] Investment casting, also known as lost wax casting, includes processes such as wax pressing, wax repairing, tree formation, dipping, melting wax, casting molten metal and post-processing. Lost wax casting is to use wax to make a wax mold of the part to be cast, and then coat the wax mold with mud, which is the mud mold. After the clay mold is dried, it is fired into a pottery mold. Once fired, all the wax molds are melted and lost, leaving only the pottery molds. Generally, when the mud mold is made, the sprue is left, and then the molten metal is poured into the sprue, and after cooling, the required parts are made. [0003] The types of alloys that can be produced by investment casting include carbon steel, alloy steel, heat-resistant alloy, stainless steel, precision alloy, perm...

AI Technical Summary

Problems solved by technology

The inflow of existing casting materials is uneven, resulting in slag sticking on the surface of the slab, which affects the final yield. At the same time, the casting method is complicated and the cost is high.