Precision casting machining parts

What is precision casting?
Precision casting is a casting method compared to the traditional casting process. It can obtain relatively accurate shapes and high casting accuracy. The more common method is: first design and make a mold according to product requirements (with very small margin or no margin), use casting method to cast wax to obtain the original wax mold; repeat coating and sanding on the wax mold Process, harden the shell and dry; then melt the wax mold inside to dewax and obtain a cavity; roast the shell to obtain sufficient strength; cast the required metal materials; clear the sand after shelling to obtain High-precision finished product. According to product needs or heat treatment and cold processing.

Investment casting process
Mold design—mold manufacturing—wax pressing (wax injection mold making)—wax repair—wax inspection—group tree (wax module tree)—shell (first dip, sand, and then paste , And finally the mold shell is air-dried)-dewaxing (steam dewaxing)-mold shell roasting-chemical analysis-pouring (pouring molten steel in the mold shell)-vibration shelling-casting and pouring rod cutting separation- —Grinding gate — initial inspection (blank inspection) — shot blasting — machining — polishing — finished product inspection — warehousing
The precision casting production process can be roughly divided into wax pressing, shell making, pouring, post-processing, and inspection.
Pressing wax includes pressing wax, repairing wax, and grouping tree.
Shell making includes hanging sand, hanging slurry, and air drying.
Pouring includes roasting, chemical analysis (spectroscopy), pouring, shell vibration, gate cutting, and gate grinding.
Post-processing includes sandblasting, shot blasting, correction, and pickling.
Inspection includes wax inspection, initial inspection, intermediate inspection, and finished product inspection.