... aluminum alloy, zinc alloy etcMachining equipment: Boring machine, line cutter, CMM, CNC lathe , CNC machining center, Vertical ... machining center, CMM, Surface roughness tester, Surface hardness testerProcess: Sanding casting process, investment casting process, die casting process, permanent mould casting ... balancing machineInspection1.The whole quality control system has been carried out during the ...