Clearing method of contaminants in casting inner cavity

Abstract

The invention relates to a clearing method of contaminants in a casting inner cavity, and aims to solve the problems that during casting of parts, after a casting is shaped, clearing effects by using methods including washing with high-pressure water, chemical corrosion, shaking and the like are limited, the parts are damaged, and the contaminants cannot be thoroughly cleared. The clearing method of contaminants in the casting inner cavity, disclosed by the invention, comprises the following steps of enabling a hose of which the surface is inlaid with hard materials and unsmooth to extend into the inner cavity; pressing air in the inner cavity so as to enable the hose to swell to enable the hard materials to be in sufficient contact with the inner cavity; and effectively removing the contaminants in the inner cavity through rubbing. The method can be independently used or combined with other conventional clearing methods for use so as to effectively clear the casting inner cavity.

Description

technical field [0001] The invention relates to a kind of inner cavity pollution of a casting in order to solve the problems of limited cleaning effect, damage to the parts and incomplete cleaning by using high-pressure water washing, chemical corrosion, vibration and other methods after the casting is formed. cleaning methods. Background technique [0002] With the rapid development of heavy industry, the structure of castings is becoming more and more complex, and many parts have complex inner cavities. During the casting process, the inner cavity of the casting is mainly formed by sand cores, ceramic cores, and gypsum cores. After molding, pollutants such as molding sand will be left in the inner cavity of the casting. After the casting is formed, use high-pressure water washing, chemical corrosion, vibration and other methods to clean it. However, the cleaning effect of the high-pressure water flushing inner cavity is limited, especially for the cleaning of the pipe-sh...

AI Technical Summary

Problems solved by technology

However, the cleaning effect of high-pressure water flushing on the inner cavity is limited, especially for the cleaning of the inner cavity with a small diameter and twists and turns.

Chemical corrosion pollutes a lot, takes a long time, damages parts, and is not cleaned thoroughly

Vibration does not thoroughly clean the castings with high bonding strength with the parts, and it is even more difficult to thoroughly clean the zigzag tubular inner cavity

The incomplete cleaning of the inner cavity of the casting seriously affects the reliability of the parts. It is an uncertain time bomb buried in the product. For some key parts, it directly affects the safety and reliability of the whole machine.

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