Aluminum manifolds are important auto accessories, the original parts were made by die casting process, however,as the aluminum manifolds for repair parts on the second markets can not be made by die casting process,the only reason due the higher molds cost.
Quenching and tempering heat treatment to ductile iron could increase the surface hardness of castings, to make the casting with good hardness and abrasive resistance.
As the sand castings, there are several molding processes, which include manual moulding, machine molding (mechanical moulding), automatic machine molding. The automatic molding include horizontal molding and vertical molding.
Most factories often face different inspection standards for casting blank size with foreign customers,we have extensive experience in these areas,hope to share how to confirm the inspection standards and find a free downloaded DCTG standard.