We will carry regular testing of our discs everyday and below is the general way for measure our cutting discs performance:
For example , the cutting discs diameter before cutting is 115.00mm and final diameter is 110.00mm after cut-off 30 times stainless steel rod in 12mm diameter, now we can calculate the G.Ratio like below:
* Cutting discs consume area = π* (115/2)*(115/2) - π* (110/2)*(110/2)= π* (3306.25-3025)=883.125mm2
* Work-piece consume area = π *(12/2)* (12/2)* 30 = 3391.2mm2
* G.Ratio= 3391.2mm2/883.125mm2 = 3.84
The G.Ratio more bigger, means the cutting discs can do more cutting works.