环台水泥制品股份有限公司文件名称品质工程管理表.doc

Quality Engineering Management Table Lost Wax Casting Process (investment casting) Doc. No. 4-02-001 Date: 2002.11.30 Version: 1 Works Management items Management method Ref. documents No. Station Item Quality request Method/equipment Timing Duty Inspection record Check basis 1 Incoming material Inspection As per “Incoming material inspection control standard” 3-10-001 2 Material in stock As per “Moving, saving and packing management” 2-15-001 3 Dissolve and add wax Wax quality Clean Visual Once/ 2 weeks Worker leader Yes 4-09-003 4 Wax injection bar Surface of wax bar Smooth Visual Full Worker No 3-08-003 5 Wax injection 1、Letters Clear, Correct Visual Full Worker No Process control chart 2、Appearance No bubble, Smooth Visual Full Worker No 3、Internal holes No deformation Visual Full Worker No 4、Q’ty Process control chart Calculation Per lot Worker Process control chart Process control chart 5、Pressure Process control chart Wax injection pressure chart Per lot Worker Process control chart Process control chart 6、Temperature Process control chart Wax injection temperature chart Per lot worker Process control chart Process control chart 7、Time of wax injection Process control chart Time table of wax injection Per lot Worker Process control chart Process control chart 6 Wax repair Burrs De-burrs Visual Full Worker No 7 Pattern assembly 1、Correct way for wax bar and pattern assembly Wax pcs assemble smoothly to wax bar joint Visual Full Worker No Process control chart 3-08-003 2、Material mark Correct Visual Full Worker No Process control chart 3-08-004 3、Q’ty calculation Correct Visual Full Worker No Process control chart 8 Hanging and clean wax pcs 1、Hanging Iron slice stay close to wax bar Visual Full Worker No 2、Clean wax pcs Clean fully Visual Full Worker No 9 Dipping 1、Concentration 28-30secs Stop watch and No.5 glass Once/day Worker leader Shell temperature, humidity and thick liq