What Molding Technologies Are Available for Producing Copper Castings?

Multiple mature molding processes can produce copper castings,selected according to part structure,tolerance requirements and production volume.Sand casting adopts disposable sand molds with low upfront mold cost,capable of manufacturing large-size,thick-wall and irregular copper castings for small-batch customized industrial parts.Investment casting,also known as lost wax casting,achieves ultra-high dimensional accuracy and smooth surface,fit for tiny thin-wall precision copper components with strict appearance standards.Gravity permanent mold casting uses reusable metal molds,greatly lowering internal shrinkage and porosity defects,widely applied to airtight pump casings and valve bodies.Low-pressure casting fills molds with steady air pressure,slowing down molten copper flow to reduce gas entrapment,which is preferred for sealing copper castings that require zero liquid leakage.Each process has different defect control difficulty to match diversified product design standards.