HOW TO CHECK THE HARDNESS OF GRINDING MEDIA

DEAR GRINDING EXPERTS 

I WANT TO KNOW ABOUT DIFFERENT SCALES OF HARDNESS USED FOR GRINDING MEDIA.

WHAT IS THE RELATION BETWEEN THESE SCALES & HOW?

AS PER BOOKS WE USE

BHN

VICKERS SCALE

ROCKWELL SCALE 

BUT I AM NOT CLEAR ABOUT THESE SCALES.

PLEASE DO EXPLAIN.

 

THANKS

SIDHANT

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