Precision casting process
Wax pressing (wax model made by shooting wax) --- wax repairing-wax inspection-group tree (wax module tree) --- shell making (first dip the slurry, drench the sand, then dip the slurry, and finally mold
Shell air-dried) --- Dewaxing (steam dewaxing) ------- Mould shell roasting--Chemical analysis--Pouring (Pouring molten steel in the mold shell) ---- Vibrating shell--
Cutting and separation of castings and pouring rods-grinding gate-initial inspection (blank inspection)-shot blasting cleaning-machining-polishing-finished product inspection-- Warehousing
The casting production process is roughly like this. In general, it can be divided into wax pressing, shell making, pouring, post-processing and inspection
Including wax pressing (wax pressing, wax repair, group tree)
Wax pressing --- making wax mold with wax pressing machine
Repair wax --- Modify wax mold
Group tree --- group the wax model
Shell making includes (hanging sand, hanging pulp, air-drying)
Casting includes (roasting, chemical analysis also called spectroscopy, pouring, shock shell, cut gate, grinding gate)
Post-processing includes (blasting, shot blasting, correction, pickling)
Inspection includes (wax inspection, preliminary inspection, intermediate inspection, finished product inspection)
O.B.T Manufacture 
