Production process for casting core mold part based on lost foam technology

Abstract

The invention discloses a production process for casting a core mold part based on a lost foam technology. The production process comprises the following steps of A, preparing a core mold model; b, preparing a core model cluster; c, pretreatment of model casting, specifically, burying the core model cluster into a sand box, compacting molding sand in the sand box, covering the molding sand with a plastic film, and performing primary vacuumizing treatment on the sand box to enable the interior of the sand box to be in a negative pressure state; d, casting; and e, post-treatment of model casting, specifically, uncovering the plastic film on the sand box, carrying out secondary vacuumizing on the interior of the sand box, taking out a fully cooled core mold casting from the sand box, and carrying out size and shape finish machining treatment to obtain the core mold part. The core mold part manufactured through the production process has the advantages of being high in size precision and low in surface roughness, the production process is simple, the production cost is greatly reduced, material consumption is low, and production process has high popularization value in the field of core mold part casting.

Description

technical field [0001] The invention relates to the technical field of core mold component casting. Specifically, it is the production process of casting core mold parts based on lost foam technology. Background technique [0002] The mandrel is an important part used to solidify fuel and increase fuel density in the aviation field. After the fuel is loaded in the rocket propulsion chamber or the missile body, the fuel can be pushed forward through the mandrel to increase the pressure to a certain extent, so as to achieve the purpose of increasing the fuel density while solidifying the fuel. At present, in the production of core mold parts for aerospace fuel solidification and compaction, the common production process is: directly turn the alloy round bar into simple shape core mold parts, while the complex shape parts are made of The processed simple parts are welded together. There are many problems in such a core mold production process, such as: waste of expensive met...

AI Technical Summary

Problems solved by technology

[0003] For this reason, the technical problem to be solved by the present invention is to provide a production process for casting core mold parts based on lost foam technology, so as to solve the serious waste of metal materials, complicated manufacturing process, time-consuming and labor-intensive problems in the existing core mold production process. In the production of core mold parts with heavy weight and complex structure, it is expensive, time-consuming and labor-intensive. At the same time, it can quickly cool the molded castings and effectively ensure the mechanical properties of the core mold castings.

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