铌对液压支架立柱等离子熔敷涂层组织性能的影响

发布时间：2018-01-25 02:11

本文关键词： 等离子熔敷液压支架立柱铌　出处：《焊接》2015年11期 　论文类型：期刊论文

【摘要】：采用自制药芯焊丝等离子熔敷技术在液压支架立柱表面制备一种耐磨耐腐蚀的铁基合金涂层,合金体系为Cr-Ni-Mo-B-Nb。通过对比涂层的显微硬度、磨料磨损试验、盐雾试验,研究合金元素铌对涂层显微组织结构、显微硬度、耐磨性、耐蚀性的影响。试验结果表明,随着铌含量的增加,熔敷层显微硬度与耐磨性均先增大后减小,N2号平均显微硬度最大为436 HV20,磨损量最小为0.226 28 g,盐雾腐蚀后无腐蚀点,耐腐蚀性优良,适合液压支架立柱工矿的使用要求。
[Abstract]:A kind of wear-resistant and corrosion-resistant Fe-base alloy coating was prepared on the surface of hydraulic support column by plasma cladding technology of self-made flux-cored wire. The alloy system is Cr-Ni-Mo-B-Nb.The microstructure, microhardness and wear resistance of the coating were studied by comparing the microhardness, abrasive wear test and salt spray test. The experimental results show that with the increase of niobium content, the microhardness and wear resistance of the coating increase first and then decrease the average microhardness of N _ 2 number is 436 HV20. The minimum wear amount is 0.226 28 g, no corrosion point after salt spray corrosion, good corrosion resistance, suitable for the use of hydraulic support pillar mining requirements.
【作者单位】：北京工业大学材料科学与工程学院;菲拉克焊接江苏有限公司;
【基金】：哈尔滨工业大学先进焊接与连接国家重点实验室(AWJM13-01)
【分类号】：TG44
【正文快照】： _ _ °m胃中国是煤炭生产大国,液压支架作为煤炭开采的核心设备,其工作面成套设备成本的60%用于液压支架的投人⑴,液压支架整体的使用寿命影响着煤炭开采的进度,然而液压支架上的活塞杆是易损件,在井下复杂的工矿环境中,容易因腐蚀、磨损、变形而使液压系统失效。因此,研

【相似文献】