Prefabricated ceramic tube composite shell making process method

Abstract

The invention discloses a prefabricated ceramic tube composite shell making process method. The prefabricated ceramic tube composite shell making process method comprises the following steps: preparing a mold pattern, bonding a riser and a ceramic flow gate, drying and roasting, in the step 3, after an EPS white mold is dip-coated and a coating does not flow any more, sanding and putting into an ammonia chloride aqueous solution for curing, and repeatedly dip-coating the material, sanding and curing. The prefabricated ceramic tube composite shell making process method belongs to the technical field of casting molding processes and is a composite shell making process method in which an EPS material pattern is innovatively selected to make a shell mold and the bonding riser and the ceramic flow gate are bonded on the white mold pattern in advance, the process procedure of shell making of existing investment casting is simplified to a great degree, the whole shell making process operation is simple and convenient to operate, the shell manufacturing efficiency is greatly improved, the production period is shortened, meanwhile, the EPS material can be used for manufacturing shells of large castings, and accordingly the problem that existing paraffin cannot be used for manufacturing the mold shells of the large castings is solved.

Description

technical field [0001] The invention relates to the technical field of casting molding technology, in particular to a prefabricated porcelain tube composite shell-making process 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 the wax mold of the part to be cast, and then coat the wax mold with mud, which is the mud mold. After the mud mold is dried, put it in hot water to melt the internal wax mold The clay mold is taken out and then baked into a pottery mold. Once fired, the sprue is generally left when the clay mold is made, and then the molten metal is poured into the sprue. After cooling, the required parts are made. In the current investment casting, shell making in the form of paraffin is only suitable for castings of a few grams to no more than ten kilog...

AI Technical Summary

Problems solved by technology

In the current investment casting, shell making in the form of paraffin is only suitable for castings of a few grams to no more than ten kilograms, and it is impossible to realize the shell making operation for large castings, and the production cycle is long and the efficiency is low. At the same time, bonding The riser and the ceramic gate are connected to the shell after the shell is formed, which makes the subsequent process operation inconvenient

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