Analysis and Countermeasures of CADI Grinding Ball Abnormal Structure
Author of the article:CHEN Canguang;XU Jinfeng;CHEN Quanxin;YAO Yongmao;WU Mingzhong;GUI Jinsong;HAN Fei
Author's Workplace：Ningguo Huafeng Wear-resistant Material Co.,Ltd.,Ningguo 242300,China;School of Materials Science and Engineering,Xi'an University of Technology,Xi'an 710048,China
Key Words：CADI grinding balls hardenability microstructure
Abstract：
The microstructure of as-cast and quenched grinding balls was observed in the diameter direction by means of standard metallographic technique,optical metallographic microscope and scanning electron microscope(SEM).The differences of as-cast and quenched microstructure between domestic and Mongolian grinding balls from the surface to the heart were compared and analyzed.The mechanism of the effect of the composition of the surface chilling layer on the overall heat transfer process of the grinding ball was revealed.The results show that the adjustment direction of chemical composition is proposed from the two aspects of improving as-cast microstructure and reducing austenite stability.The production problems of CADI grinding ball in Mongolia,such as abnormal microstructure,unquenchable center and substandard performance,are solved successfully.
