Industrial News

NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (6)

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6.1 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 […]

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NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (5)

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5.1 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.

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NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (4)

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4.1 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.

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NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (3)

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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 […]

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NATIONAL STANDARD OF THE GRINDING BALLS IN CHINA (2)

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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.

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