Green Sand Casting Process

These expendable molds used to make the mold's shape in green sand casting process are made of wet sands, which is not a type of green color sand, but a mixture in the sense that it is used in a wet state, akin to green wood. The wet sands usually contains:
silica sand , chromite sand, zircon sand, olivine, staurolite, or graphite;
clay;
water;
inert sludge;
Anthracite.

In green sand casting process, the sands for non-ferrous metals does not use coal additives, because the CO created is not effective to prevent oxidation. Green sand for aluminum typically uses olivine sand, which is a mixture of the minerals forsterite and fayalite. Furthermore, the choice of sand can make a difference on the temperature that the metal is poured.

Ruyi Casting owns a advanced automatic moulding line, which is exactly suitable for such green sand casting process. Our advanced moulding machine as well as the stable sand preparation system can guarantee the high efficiency production and stable quality. And now we have built good relationships with customers from Canada, USA, Switzerland, Sweden and other European countries. If you have the interest in our service, please email us to sales@ruyicasting.com .