高碳珠光体钢在大型半自磨机筒体衬板上的应用  

Application of High Carbon Pearlitic Steel in Large Semi-Autogenous Grinding Mill Sheel Liner

作　　者：陈志鹏 付向上 陈守峰 麻日来 吕振林[2] CHEN Zhipeng;FU Xiangshang;CHEN Shoufeng;MA Rilai;LYU Zhenlin(Jiangxi Copper Group(Dexing)Casting Co.,Ltd.,Dexing 334224,China;School of Materials Science and Engineering,Xi'an University of Technology,Xi'an 71004&China)

机构地区：[1]江西铜业集团(德兴)铸造有限公司,江西德兴334224 [2]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《铸造技术》2023年第4期383-387,共5页Foundry Technology

基　　金：陕西省重点研发计划(2018GY108)。

摘　　要：本文介绍了铜矿磨矿用大型半自磨机的使用工况和使用环境,以及大型半自磨机筒体衬板的材质、组织和性能的选定。衬板材质为CrMoNi高碳钢,组织为珠光体+少量二次碳化物,硬度为35~42 HRC,无缺口冲击韧性≥60 J/cm^(2)。结合衬板结构的优化设计,铜矿用大型半自磨机筒体衬板的使用寿命可稳定在4个月,重量磨损率为44.44%。确定了大型半自磨机筒体衬板的磨损失效机制,除矿石产生的磨粒切削、疲劳磨损外,还存在矿石浆料产生的腐蚀磨损。分析了影响大型半自磨机筒体衬板使用寿命的因素,为大型半自磨机衬板的生产、使用和寿命提高提供了参考。The operating conditions and service environment of a large semi-auto genousgrmding(SAG)mill for copper mines were introduced in this paper.The selections of the material,microstructures and properties of the large SAG mill shell liners were also presented.The liner material is CrMoNi high carbon steel with a microstructure consisting of pearlite and second carbide,a hardness of 35^42 HRC and an impact toughness greater than or equal to 60 J/cm^(2).Combined with the optimization design of the liner structure,the service life of the liners of the large SAG mill shell for copper mines can be stabilized at 4 months,with a weight loss of 44.44%.The wear failure mechanism of a large SAG mill shell liner is determined to be that besides the abrasive cutting and fatigue wear caused by ore,corrosion wear caused by ore sluny also exists.The factors influencing the service life of the liner are also analysed,which provides a reference for the production,application and service life improvement of large SAG mill shell liners.

关 键 词：大型半自磨机 筒体衬板 磨损机制 磨损失效分析 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TD453[金属学及工艺—金属材料]