Method for integrally casting electric power fitting based on 3D printing technology

Abstract

The invention discloses a method for integrally casting an electric power fitting based on the 3D printing technology. The method comprises the following steps that (1), a three-dimensional model of an electric power fitting to be manufactured is drawn, and a to-be-manufactured electric power fitting model, a plurality of casting channels, an exhaust channel, a gate stick and a gate are manufactured through a 3D printing machine according to the three-dimensional model; (2), shells are manufactured for the outer wall of the to-be-manufactured electric power fitting model, the outer walls of the casting channels, the outer wall of the exhaust channel, the outer wall of the gate stick and the outer wall of the gate, and the outer walls of the shells are wrapped with fire-resisting materials; (3), a same-pressure steam method is adopted for removing the to-be-manufactured electric power fitting model, the casting channels, the exhaust channel, the gate stick and the gate inside the shells in a melting manner; and (4), the shells are roasted, then molten metal materials are poured into the shells to be cooled, the shells are removed, and the needed electric power fitting is obtained. The assembling errors do not exist in the manufactured electric power fitting manufactured according to the method, and the internal organization and the mechanical property of the electric power fitting are coincident.

Description

technical field [0001] The invention belongs to the field of foundry tooling equipment, and relates to a method for integrally casting electric power fittings based on 3D printing technology. Background technique [0002] At present, the forming methods of electric power fittings mainly include casting and forging. The forging process of electric power fittings can be divided into free forging and die forging according to the method. According to the forging temperature, it can be divided into hot forging, warm forging, and cold forging. The commonly used method is hot forging. During free forging, the forger should control the amount of reduction for each forging, which has relatively high requirements for the operator. Die forging needs to design molds to deform the blank to obtain forgings. The time period is long and the production cost is high. At the same time, the existing technology casting needs to prepare each part of the power fittings first, and then assemble th...

AI Technical Summary

Problems solved by technology

Die forging needs to design molds to deform the blank to obtain forgings. The time period is long and the production cost is high. At the same time, the existing technology casting needs to prepare each part of the power fittings first, and then assemble them. Then there are assembly parts in the assembly process. errors, and the amount of labor is large, and its internal organization and mechanical properties are inconsistent, resulting in the phenomenon of fracture during use

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