wheel weights inspection standard
wheel weights inspection standard
- Aim:
To ensure ourwheel weights will meet the quality requirement. It will be suitable for all inspection of wheel weight raw material.
- Basis of inspection：purchase order, BOM material inventory, engineering physical model.
3.Definition:
3.1 Visual inspection: The inspector will be with corrected visual acuity no less than 1.2 and no color blindness and color weak eye disease. And the inspection method is in the natural light or 40W incandescent light or standard light source, 30cm away from the observation at the head-level 3 seconds.
3.2 wheel weight A combination of a weight and a chuck mounted on the rim, rim for balancing the tread and wheel assembly rotating about the center to achieve a dynamic balancing requirement within a specified value. Wheel Weight is in grams as units. The clip on wheel weight is with a hook and then could be installed on the edge of the rims firmly.
- Responsibilities and Permissions
Quality department: Responsible for the supervision and control of the implementation of this standard.
- Content:
5.1 Sample Extraction Method
5.2 based on GB/T2828.1-2003, General inspection level II, normal inspection sample extraction one time method
- Description of the defect level:
6.1 Is caused personal safety, serious loss of property or environmental pollution
6.2 Refer to the damage of product function or seriously affect the integrity of the product structure
6.3 The defect except the critical and major defect.
| Inspection Item | Inspection Standard | Inspection Method |
|
Exterior |
No cracks, pinholes, craters, defects, repair or other defects， affecting the strength of balance weight； The hook is no cracks,glitch； the surface treatment is uniform coated. | Visual |
| Weight | 100±3,200±5 | Electronic scales |
| Installation and disassembly | There is no room between balance and hook. And it could be used normally. Whats more, the hook is no cracks, not loose, or obvious deformation phenomenon.Installing firmly, and the wheel weight is no change with 5 times installation ans disassembly with mounting and demounting tools. |
Trial installation |
| smell | Wheel weight is no peculiar smell | smell |
| Hardness(HRC) | The hook HRC40-48 | Hardness tester |
| Demounting force | the static force, which remove wheel weight from rims with tool is over 300N. | Trial installation |
| Corrosion resistance | The way of surface treatment and salt-spray test are based on GB2864.
Corrosion resistance should be over 48h |
Salt-spray test machine |
| Strength Test | Weight 740g steel ball from 80/60 cm height free fall to the balance block mounting screw. Then there is no obvious defects, like big fragment and cracks | Drop experiment |