铜矿湿磨用球磨机合金钢衬板的腐蚀磨损失效分析

发布时间：2018-05-17 14:15

本文选题：衬板 + 弱酸性　；参考：《特种铸造及有色合金》2017年07期

【摘要】：针对铜矿湿磨工况下球磨机衬板的失效行为进行了研究。采用光学显微镜(OM)、扫描电镜(SEM)、能谱仪(EDS)及显微硬度仪等分析了服役Cr合金钢衬板的组织形貌,结合电化学测试手段及拉伸、冲击试验,分析了其在该工况下的耐蚀性及力学性能,并讨论了在弱酸工况中的腐蚀磨损机理。结果表明,衬板材料在模拟铜矿浆中具有良好的耐蚀性,而服役工况下的动态冲击磨损会降低材料的耐蚀性能。切削犁沟、腐蚀坑和剥落坑是衬板损伤的主要形式,腐蚀磨损的交互作用是导致衬板失效的主要原因。
[Abstract]:The failure behavior of ball mill liner under wet grinding condition of copper mine was studied. The microstructure of Cr alloy steel liner was analyzed by means of optical microscope, scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and microhardness tester. The microstructure of the lining plate of Cr alloy steel was analyzed by means of electrochemical test and tensile and impact tests. The corrosion resistance and mechanical properties are analyzed, and the corrosion and wear mechanism in weak acid condition is discussed. The results show that the liner material has good corrosion resistance in the simulated copper slurry, while the dynamic impact wear under service condition will reduce the corrosion resistance of the material. Cutting ploughing, corrosion pits and spalling pits are the main forms of lining damage, and the interaction of corrosion and wear is the main cause of lining failure.
【作者单位】：中南大学材料科学与工程学院;广东省材料与加工研究所;广东省金属强韧化技术与应用重点实验室;
【基金】：广州市创新平台建设与共享项目(201509010003) 广东省科技基础条件建设领域项目(2014B030301012) 广东省省属科研机构改革创新领域项目(2015B070701026) 广东省应用型科技研发专项资金项目(2015B090926009) 广州市产学研协同创新重大专项(201508010061) 中山市广东省科学院技术转移专项经费(2016F1FC0003)
【分类号】：TD453;TG174.4

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