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NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA(7)
/in Grinding media balls /by Sara Wu7.1 The casting grinding ball shall be inspected by the supplier’s quality inspection department. 7.2 Chemical composition inspection shall be conducted in batches. If melt by induction furnace, each furnace as batch; if melt by cupola furnace, every 2hours as batch. Get one example to inspect the composition for each batch. If the test result […]
NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA(6)
/in Grinding media balls /by Sara Wu6.1 The diameter of the casting grinding ball is measured by a tool with an accuracy of not less than 0.01 mm. 6.2 The analysis method of the chemical composition should be according with the standards of GB/T 223. 3, GB/T 223. 4, GB/T 223.11, GB/T 223. 18, GB/T 223. 23, GB/T 223. 26, GB/T […]
NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA(5)
/in Grinding media balls /by Sara Wu5.1 The grinding balls tolerance of the diameter should be accord with Table 1. 5.2 The main chemical composition of each grades should be accord with Table 2.
NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA(4)
/in Grinding media balls /by Sara Wu4.1 Chrome alloy cast iron grinding balls are divided into 7 grades according to the chrome content. Nodular cast iron grinding balls are divided into two grades according to the matrix structure, I. E. Bainite ductile cast iron grinding balls and Martensite ductile cast iron grinding balls.
NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA(3)
/in Grinding media balls /by Sara WuGB/T 5611 established and the following terms and attributes shall apply to this standard 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 grinding […]