Vacuum thermal forming production process for fired mold precision manufacturing

Abstract

The invention discloses a vacuum thermal forming production process for fired mold precision manufacturing. The process comprises the following steps: fired mold manufacturing, wax mold manufacturing,dewaxing, roasting, intermediate alloy manufacturing, crucible filling, fired mold filling, vacuum smelting, pouring, furnace charging, fired mold eliminating and the like. By smelting and demoldingan alloy material in a vacuum environmental condition, the production process is simple and has the advantages that the metal utilization ratio is improved obviously, the fired mold has good mold filling performance, the casting quality is improved continuously, the cost is saved and the integral efficiency is improved, and the pouring condition is improved positively, and mechanization is achieved. The process provided by the invention can improve or overcome defects that in existing alloy casting, the casting is poor in quality, mechanical property and conducting performance, severe in casting loss and the like obviously, and solves the problem that part of metal elements are easily oxidized in atmosphere, a molten alloy is poor in mobility, great in viscosity, easy to bond and the like,so that the quality of the alloy casting is improved greatly. The casting product produced is more stable in dimension and higher in precision.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a vacuum thermoforming production process for investment mold precision manufacturing. Background technique [0002] Investment precision casting is a casting process with little or no cutting. It is widely used. It is not only suitable for casting various alloys, but also produces castings with higher dimensional accuracy and surface quality than other casting methods, and even other casting methods. Castings that are difficult to cast, complex, high temperature resistant, and difficult to process can be realized by investment precision casting technology. The products obtained by investment precision casting are precise and complex, close to the final shape of the parts, and can be used directly without or with little processing. It is an advanced technology of near-net shape and an excellent technology in the foundry industry. very broad. [0003] At pres...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vacuum thermoforming production process for precise manufacturing of investment molds. By melting and demolding the alloy material under vacuum environment conditions, the production process is simple and has the following advantages: significantly improving the metal utilization rate; having a good Filling performance; continuously improve the quality of castings; save costs and improve overall efficiency; actively improve pouring conditions and realize mechanization; Severe loss and other defects; effectively solve the problems of some metal elements are easily oxidized in the atmosphere, poor fluidity of alloy melt, high viscosity, easy to bond, etc., greatly improving the quality of alloy castings; the size of castings obtained by production More stable and higher precision