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wheel weights inspection standard

times   2017-01-11

 wheel weights inspection standard 

1.  Aim:

To ensure ourwheel weights will meet the quality requirement. It will be suitable for all inspection of wheel weight raw material.

2. Basis of inspectionpurchase 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.

4.  Responsibilities and Permissions

Quality department: Responsible for the supervision and control of the implementation of this standard.

5. 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

6.  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


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