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What is Investment Casting?

Issuing time:2021-04-12 10:03Author:Highyond

Investmentcasting refers to the general term for the process of obtaining precise size castings.Compared with the traditional sand casting process, the casting size obtained by precision casting is more accurate and the surface finish is better.It includes investment casting, ceramic mold casting, metal mold casting, pressure casting, lost mold casting.

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One of the more commonly used is investment casting, also known as lost wax casting: the selection of appropriate investment materials (such as paraffin wax) to make investment;Repeatedly dip the refractory coating on the investment mould and sprinkle the refractory sand process, hardening the shell and drying;The cavity is obtained by dissolving the inner investment.Roasting shell to obtain sufficient strength, and burning off the residual investment material;Metal materials needed for casting;After solidification and cooling, the sand is removed from the shell to obtain the finished product with high precision.Heat treatment and cold working and surface treatment according to product requirement.

Process flow:Wax pressing (wax injection to make wax mold) - wax repair --- wax inspection group tree (wax mold tree) ----   shell making (first dipping slurry, dashing sand, then dipping slurry, and finally mold drying) - dewaxing (steam dewaxing) - roasting of mold shell - chemical property analysis - casting (pouring molten steel into mold shell) non - shock dehulling - cutting and separating casting and casting rod without grinding and pouringThe mouth -- preliminary inspection (wool embryo inspection) -- shot blasting cleaning ----- machine processing and polishing -- finished product inspection -- warehousing

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