Sand casting service is one of our most important businesses. Matson metal has more than 20 years of experience in this field.
And today, we would like to continue the defects sharing and solving solutions in Casting production.
These blowholes appear on the surface of the cast and are easier to detect than subsurface blowholes.
Causes and prevention of gas porosity
There are several causes of cavity defects.
- Poor venting of mold and cores
- Insufficient drying of mold and cores
How can we prevent gas porosity?
- casting defects Excessive moisture content of molding sand
- Inadequate gas permeability of molding sand