With what refining agent good ah, we cast the valve ball always have holes, what should I do, master?
Paint is also related to mold exhaust, as well as aluminum water temperature
It is a good way to pour the aluminum scraps on the surface of molten iron before pouring. It can not only increase the hot metal temperature, but also remove the dross and slag. The casting process is improved, which is beneficial to exhaust the gas and flow out enough air vent. You might not be talking about gas holes. If you're necking, you have to change the makeup process.
Each material has different refining agents, such as casting copper and casting aluminium, such as casting brass and casting bronze. Valve material selection of many, what is your material ball valve?
