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Quality ControlQuality Control
| 产 品 自 制 各 加 工 流 程 及 质 量 控 制 （从原材料/零件采购开始到成品出厂） | |||||||||
| no. | processing | equipments | equipment manufacturers | spec. | us age | nos | inspection items | inspection equipment | inspection frequency |
| 1 | material inspection | dimension, hardness | callipers, hardness tester | 100% inspection | |||||
| 2 | rough turning | 双柱立式车床 | 齐重数控 | C5225Ex16/10 | 2 | 1台 | dimension | callipers | 100% inspection |
| horiztonal lathe | 甘肃星火机床 | CWA61100/1500 | 2 | 1台 | |||||
| horiztonal lathe | 安阳鑫盛 | CA6180B/750 | 1 | 1台 | |||||
| horiztonal lathe | 沈阳机床 | CA6140A/1000 | 2 | 1台 | |||||
| 3 | flaw detecting | material cracks | crackmeter | 100% inspection | |||||
| 4 | Q+T | hardness | Richtar scale | 100% inspection | |||||
| 5 | finish turning（face, ID OD) | dimension | callipers, dial test indicator | 100% inspection | |||||
| 6 | finish turning（raceway) | dimension, position, shape | callipers, dial test indicator, templet | 100% inspection | |||||
| 7 | lining for drilling grease holes | dimension, position | callipers, dial test indicator | 100% inspection | |||||
| 8 | soft grinding (raceway) | surface grinder | 朝阳机床 | M74100B | 2 | 1台 | dimension, position, shape | callipers, dial test indicator, templet | 100% inspection |
| internal grinder | 无锡精密 | M280A | 2 | 2台 | 100% inspection | ||||
| internal grinder | 宁波耐特嘉 | MD21000A | 2 | 1台 | 100% inspection | ||||
| external grinder | 上海机床 | MQ8260 | 2 | 1台 | 100% inspection | ||||
| external grinder | 陕西秦川 | 3MB2180/8 | 1 | 1台 | 100% inspection | ||||
| landing grinder | 洛阳 | LM-2000 | 2 | 2台 | 100% inspection | ||||
| 9 | surface hardening (raceway) | hardness, cracks | hardness tester, liquid panetrant tester | 100% inspection | |||||
| 10 | raw grinding (face, OD) | dimension,paralell error, oval, conicity | dial test indicator, micrometer, standard unit | 100% inspection | |||||
| 11 | tempering | furnace | 沈阳兴旺 | RX-50-3 | 2 | 1台 | |||
| 12 | gear machining | common normal, tooth thickness, module | callipers | 100% inspection | |||||
| 13 | hole drilling | universal radial drill | 中捷 | Z3050X16/1 | 1台 | aperture, nos of hoels, equally distributed | callipers | 100% inspection | |
| universal radial drill | 中捷 | Z37（25X8/2） | 1台 | ||||||
| 14 | teeth hardening | hardness cracks | hardness tester, liquid panetrant tester | 100% inspection | |||||
| 15 | final grinding（face, ID, OD, raceway) | dimension,paralell error, oval, conicity | dial test indicator, micrometer, standard unit | 100% inspection | |||||
| 16 | parts inspection | dimension,paralell error, oval, conicity | dial test indicator, micrometer, standard unit | 100% inspection | |||||
| 17 | inspection of finished bearings | dimension, starting moment, runout, radial runout | dial test indicator, micrometer, standard uni, spring balance | 100% inspection | |||||
| step runout, tooth runout, apperance, rotation, residual magnetism | |||||||||
| 18 | wahsing, lubricating, packaging | 100% inspection | |||||||
