Ceramic Shell Investment Casting (CSIC) is one of the near net shape casting technologies. The process is based on expendable wax patterns for producing joint-less moulds that are required for near net shape castings.
Tongda foundry cast conveyor rollers in material of alloy steel, carbon steel, cast steel and stainless steel. Material grade includes GB42CrMo, AISI4140, BS3100-A4, GB45, AISI1045, ASTM A148 105-85, ASTM A148 90-60, SS304, SS316, etc. To increase the force of friction, some investment cast conveyor rollers are covered with plastic or rubber material.
To custom investment castings,investment casting manufacturers will all ask drawing from our customers.So how to design drawing for investment casting?What should be made up of in a investment casting drawing?
Investment casting is one of the oldest metal forming process,people also call it lost wax casting.Wax is used to form a pattern,which is the same shape of product.It will be melted under high temperature and steel liquid will be poured into the shell.
Tongda foundry making lots of investment cast brackets in China. Such investment cast brackets are widely used in building pipelines of houses, gas/oil construction industry.
Pressure tightness is a very important factor for application of some investment castings, such as the valve body castings and pump body castings. Low pressure tightness of such products will lead to leaking problems, which will affect the safety or life time of the whole system. To control the pressure tightness of the cast parts, we do the press test on required products. The specification can be required by customers. Or we will carry out the testing according to our own standard.