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.
GB/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 […]
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
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.
3.The graded austenitizing isothermal quenching process 3.1 Effect of grade austenitizing austempering on mechanical properties of Grinding Ball After the ball was austenitized at 980 °C for 150 min + 920 °C for 30 Min, and then put into a salt bath furnace at 260 °C for 30 min and 50 Min, the hardness and […]
Abstract： The influence of quenching-tempering heat treatment, conventional austempering heat treatment and multi-stage austenitizing austempering heat treatment on the microstructure and property of high chrome cast iron grinding balls were comparatively investigated. The results show that the impact toughness and impact fatigue resistance of the grinding balls are higher after austempering. The austempering heat treatment […]
Guo Zhi-hong, Wei Ying-hui, Wang Hong-wei (Taiyuan University of Technology, materials science, Taiyuan, Shanxi) ABSTRACT: A heat treatment process of high chromium cast iron grinding media with trace alloying elements Mo, V, NB was studied. The heat treatment processes of quenching at 980 °C, tempering at 400 °C and 600 °C was adopted. The microstructure […]
Introduction As a kind of grinding body, grinding ball requires high hardness, the higher the hardness, the better the wear resistance. From the carbon content of the grinding ball: With the increase of carbon content of the grinding ball, the higher the hardness of the grinding ball, the greater the wear resistance, when the carbon […]
The grinding ball is the easy-consumption part of the ball mill. The high-quality grinding ball can reduce the overall production cost, improve the overall economic efficiency, reduce the number of downtimes, improve the utilization of ball mill, reduce labor costs. MN-B alloy bainite steel ball has the characteristics of low cost, high strength, and excellent […]
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