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CADI磨球异常组织分析与对策
Analysis and Countermeasures of CADI Grinding Ball Abnormal Structure
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- DOI:
- 作者:
- 陈灿光 徐锦锋 陈全心 姚永茂 吴明忠 桂劲松 韩非
CHEN Canguang;XU Jinfeng;CHEN Quanxin;YAO Yongmao;WU Mingzhong;GUI Jinsong;HAN Fei
- 作者单位:
- 宁国市华丰耐磨材料有限公司 西安理工大学材料科学与工程学院
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
- 关键词:
- CADI 磨球 淬透性 微观组织
CADI grinding balls hardenability microstructure
- 摘要:
- 采用标准金相技术并借助光学金相显微镜和扫描电镜,分别沿直径方向对铸态和淬火态磨球的微观组织进行了观察,对比分析了国内磨球与蒙古磨球由表层至心部的铸态组织和淬火态组织的差异,揭示了磨球表面激冷层相组成对磨球整体传热过程的作用机制。结果表明,从改善铸态组织和降低奥氏体稳定性两方面出发,提出了化学成分的调整方向,成功地解决了蒙古CADI磨球组织异常、心部淬不到、性能不达标等的生产难题。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.