METHOD FOR MANUFACTURING CASTING USING LOST WAX PROCESS

摘要

A wax pattern forming die to form a wax pattern is first fabricated, and a molten wax is poured into a cavity in the wax pattern forming die to fabricate the wax pattern. Subsequently, the wax pattern is bonded to a casting sprue pattern made of the wax and fabricated separately from the wax pattern to fabricate an integrated pattern, a surface of the integrated pattern is coated with ceramics, sintering is effected, then the integrated pattern is molten and effused to fabricate a mold to cast a casting with a casting sprue. Further, a molten metal is poured into the mold and cured, then the mold is crushed to take out the casting with the casting sprue, and the casting sprue is cut off from the casting with a casting sprue to fabricate a casting.

主权项

1. A method for manufacturing a casting using a lost wax process, comprising steps of: fabricating a wax pattern forming die to form a wax pattern; pouring a molten wax into a cavity in the wax pattern forming die to fabricate the wax pattern; bonding the wax pattern to a casting sprue pattern made of the wax and fabricated separately from the wax pattern to fabricate an integrated pattern; coating a surface of the integrated pattern with ceramics, performing sintering, and then melting and effusing the integrated pattern to fabricate a mold to mold a casting with a casting sprue; pouring a molten metal into the mold, curing the metal, and then crushing the mold to take out the casting with a casting sprue; cutting off a casting sprue from the casting with a casting sprue to fabricate the casting,
wherein the wax pattern forming die is a resin forming die that is sterically formed by using stereolithography or a three-dimensional printer and has a heat resistance temperature higher than a temperature of the molten wax.