Through the understanding of this defect, we start with the properties of molding sand and focus on the properties of molding sand . According to the analysis of molding sand data in recent period, it is found that the moisture content is 3.7%, the mud content is over 11.5%,...
The gray iron casting of a certain type of automobile engine block has a maximum outline dimension of 371mm × 329mm × 256mm, a weight of 35kg, a basic wall thickness of 3.5mm, and a relatively simple shape. The casting is produced on HWS molding line, with damp sand...
Sand inclusion refers to that there is a layer of metal lump or sheet on the surface of the casting, and a layer of molding sand or coating is sandwiched between the metal lump and the casting. Scarring is caused by a protruding scar on the part where the...