Industrial News

NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (3)

GB/T 5611 established and the following terms and attributes shall apply to this standard 3.1 Chrome alloyed cast iron grinding ball The white cast iron with chromium as main alloy element is called chrome alloy cast iron for short, and the cast grinding ball with chrome alloy cast iron as material is called chrome alloy cast iron […]

NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (2)

This standard specifies the product classification, technical requirements, test methods, inspection rules, packaging, marking and transportation of chromium alloy cast iron grinding balls and nodular cast iron grinding balls.

NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA

This standard is modified with the USA ASTM A532/A532M-93a (2003) ‘Standard specification for wear-resistant cast iron’ and EU standard EN12513:2000N ‘CAST WEAR-RESISTANT CAST IRON’ and other foreign advanced standards of the relevant provisions.

heat treatment machine for ball mill balls

What is the quenching and tempering?

In the heat treatment process, quenching and tempering is very important for casting grinding mill balls. It influences the balls hardness, inner structure, impack value. These are used to indicate a balls quality. Here briefly introduce you the  what is the quenching and tempering.