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Quality Control Plan | Date Originated: | ■Prototype RPre-Launch □Production | |||||||||
Control Plan No.: | |||||||||||
Part Name/Description: Hydraulic Rubber Hose Assembly | Customer Approval Date: | Supplier Approval Date: | |||||||||
Supplier:Hangzhou Haikuo | Approved by: | Prepared by: | |||||||||
Item | Operation/Description | Machine, Device, Tools | Characteristic | Methods | Reaction Plan |
| |||||
Process | Product/process | Evaluation/Measurement | sample | Control Method | |||||||
Specification/Tolerance | size | Freq. | |||||||||
1 | Incoming Material Inspction |
| Appearance | No damage, pollution, moisture | Visual | once | per lot | Inspector sampling and checking the warranty book | Reject,segregate and notify the purchasing department | ||
composition | Subject to the warranty | Visual | |||||||||
2 | Rubber raw material storage | Pallet/forklift | Identification | Clarity | Visual | 100% | per lot | Warehouse clerk self-inspection | Rework,adjustment | ||
environment | Ventilation, drying, avoid direct sunlight | Visual | |||||||||
3 | Ingredient | Electronic scales |
| Recipe sheet | control by computer | 100% | continuous | Computer error prevention system |
| Adjust,inform the production department | |
Weighing | Rubber refining plan | Digital display, voice prompts | |||||||||
4 | Rubber mixing | Mixing machine | Temperature | specification | Computer program setting | 100% | continuous | Computer error prevention system | |||
Weight | Recipe sheet | ||||||||||
Time | Rubber refining plan | ||||||||||
making rubber sheet | rubber sheet making machine | Times | Process work instructions | Visual | worker self-inspection | ||||||
gap | Dial | ||||||||||
5 | Rubber sheet inspection | Physical properties | Hardness |
| Hardness Tester | once | per lot | Inspector spot-check | |||
Tensile Strength | Rubber tensile Machine | ||||||||||
Elongation rate | |||||||||||
6 | inner tube extrusion | Extrusion Machine | Appearance | No damage, oil, bubble | Visual | 100% | per lot | worker self-inspection | Rework, adjust,inform the production department | ||
size | 5/8" (φ15.8mm ±0.5mm) | caliper | |||||||||
7 | Steel Wire braid | Brading Machine | Appearance | No braid missing, | Visual | 100% | per lot | ||||
8 | outer tube extrusion | Extrusion Machine | Appearance | No damage, oil, bubble | Visual | 100% | per lot | ||||
size | φ23.8 mm ±0.5mm | caliper | 100% | per lot | |||||||
9 | Printing | Print machine | Appearance | clear and error-free | Visual | 100% | per lot | ||||
10 | rap the cloth | Cloth wrapping machine | Appearance | clear and error-free | Visual | 100% | per lot | ||||
11 | coil hose | Coil rack |
| keep clean | Visual | 100% | per lot | ||||
12 | vulcanize | vulcanizer | Time | Standard request |
| 100% | per lot | ||||
13 | Take off wrapped cloth | Unwrapping machine |
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| 100% | per lot | ||||
14 | core-pulling | Water press machine | High pressure | Core- pilling out |
| 100% | per lot | ||||
15 | Pressure test | Pressure machine | 2 times than W.P | No damage, no leakage |
| 100% | per lot | ||||
16 | cutting | cutting machine | Appearance | Edge smooth | Visual | 100% | per lot | Rework, adjust | |||
size | ≥8' (2.44m) | tapeline | 100% | per lot | |||||||
17 | crimping connectors | crimping machine | Appearance | no gap, crack, leaking | Visual | 100% | per lot | ||||
size | crimping standard | caliper | 100% | per lot | |||||||
18 | Final Inspection |
| size | Finished product inspection work instructions | Caliper/Tapeline | 100% | per lot | Inspector spot-check | Rejection, segregation, notification of quality department | ||
Appearance | Visual | ||||||||||
19 |
| Burst pressure | Pressure machine | 4 times than B.P | sample | per lot | |||||
20 | Packing | packing machine | packing qty | product packing list | Visual | once | per lot | packing worker self-inspection | Isolation, rework | ||
method |
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