zaiamanda

Domestic and foreign companies have used a variety of cleaning methods in core box cleaning:
a. Use chemical cleaning agents to clean.
b. Use dry ball jet method to clean the core plate.
c. Use liquid or solid sandblasting machine for sandblasting and cleaning.


Use a liquid sandblasting machine, precision casting，the compressed air pressure is 0.5 ~ 0.7MPa, and the spraying distance is about 10 ~ 120mm. The cleaning medium chooses 90um glass pellets or 0.125mm white corundum sand to clean and maintain the core box or remove fouling. Generally, the regular cleaning and maintenance time of the core box is 1-2, and for the core with resin fouling on the surface The cleaning time of the box depends on the size of the core box, the thickness of the scale, and the complexity of the shape. Usually within 5-20 minutes, the core box can be cleaned. The spraying time has an effect on the dimensional accuracy and surface roughness of the core box. Basically no effect. The process of using a liquid sandblasting machine and glass pellets to clean the core box can basically clean the thick resin fouling on the surface of the core box, but it is difficult to clean the thick grooves that
have not been cleaned for a long time.


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