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《Journal of Zhongyuan University of Technology》 2007-01
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Study on Solidification Characteristics and Mechanical Properties of the Grinding Ball

MEI Ying(Zhongyuan University of Technology,Zhengzhou 450007,China)  
The non-equilibrium crystallizing processes and the characteristics of the metal mould nodular iron grinding ball have been discussed in this paper.It has been found out that the non-equilibrium austenite phrase appeared in hyper-eutectic nodular iron,halo-ring ferrite and non-equilibrium cementite phrase appeared in hypo-eutectic nodular iron during non-equilibrium solidification.Segregated solute and inclusion distributed at the transition boundary of the column crystal and the equiaxial crystal of the phrase.The reason of the appearing abnormal crystals has been analyzed.In order to improve the micro-structure and the mechanical properties of the nodular iron grinding ball,some control aspects have been presented.
【Fund】: 河南省科技攻关项目(0524250043)
【CateGory Index】: TG115
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