Pay attention to the shape of abrasives wheel edge wearing down!

  

Do you know?  sometimes inspect the abrasives wheels edge wearing shape can help you know well if the wheels do good job.  Normally the shape can classify to below sharp:

A. ROUND Shape - If the wheels wearing down in this shape, that's means you using the correct cutting wheels. 

B.SQUARE Shape - This shape also proved correct cutting wheels choosen and also comes from cutting works especially when cut small solids, structural shapes, pipe and tubing. 

C.CONCAVE Shape - Normal when using the correct wheel to cut tubing and thin-wall sections. 

D.POINTED Shape -  The abrasives on two-sides wearing down so fast- this indicates the wheel is too hard and most abrasives fly away by crush with the work-piece surface. 
 
E. CHISEL Shape - Wet cutting problem. Usually indicates wrong application of coolant. May cause breakage and crooked cuts. 

F. SIDE-GLAZED Shape  - Also indicates wheel is too hard or cutting too slow. Requires excessive pressure and higher power to cut. 

How to measure grinding discs performance?

For supply stable performance abrasives discs to customers, we will carry regular testing of our grinding discs everyday and below is the general way for measure our grinding discs performance:

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1) Measure the grinding discs and work-piece weight before testing ( DW1 , WW1 )

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2) Run the grinding discs grind the work-piece in a formulary time.

3) Measure the grinding discs and work-piece weight after testing ( DW2 , WW2 )

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4) Calculate the G.Ratio index.

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G.Ratio = (WW1-WW2) / (DW1-DW2)

The G.Ratio more bigger, means the grinding discs can do more grinding works. 

But G.Ratio is not the absolute index when measure the grinding discs  performance, there are also others factors such like grinding speed, hand-feeling, vibration, etc to judge the comprehensive performance of grinding discs. 

For example: A grinding discs can remove 100g work-piece in 10 minutes and itself weight consume 10g, the G.ratio=100g/10g=10,  B grinding discs can remove 200g work-piece in 10 minutes but itself weight consume 25g, the G.weight=200g/25g=8.   If only said G.ratio, seems the A is better than B, but we must see that - the B ginding discs have higher working efficence and will save your working time and labor cost. 

We can adjust our grinding discs be most suitable for your grinding applications according to customers' feedback.  Just Contact us get your best grinding solution.