磷酸料浆泵叶轮用新型铁素体不锈钢的研制  

A kind of New Ferritic Stainless Steel for the Paddle Wheel of Pump Used in Phosphoric Acid Slurry

作　　者：程莲萍[1] 雍岐龙[1] 张国亮[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650093

出　　处：《昆明理工大学学报（理工版）》2002年第2期36-39,42,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：云南省科技攻关项目基金(项目编号: 95B11-9)

摘　　要：研制了磷酸料浆泵叶轮用的一种新型铁素体不锈钢，探讨新型钢的合金成分设计、熔炼与热处理工艺设计、显微组织及性能．新型铁素体不锈钢含铬量、含碳量较高，　其中Ｃｒ　ｗ／％：２６．０％～３２．０％，Ｃ　ｗ　％：０．４％～１．２％，最佳热处理工艺为８００～９００℃固溶化处理．挂片试验结果表明，新型铁素体不锈钢钢较以往的奥氏体不锈钢在磷酸料浆中具有更长的使用寿命，具有良好的耐磨性、耐腐蚀性．A kind of new ferritic stainless steel for the paddle wheel of pump used in phosphoric acid slurry has been developed, and the design of its alloying elements and smelting and heat treatments, its microstructures and properties, have been investigated. The new ferritic stainless steel has high chromium (Cr w%:26.0%~32.0%) and high carbon (C w%:0.4%~1.2%) and its optimal heat treatment is solid solution treatment at 800~9000C.The result of on-site plate hanging test shows that the new steel has longer life span than that of austenitic stainless steel used before and has good wear and corrosion resistance when servicing in phosphoric acid slurry.

关 键 词：磷酸 料浆泵 叶轮 铁素体不锈钢 合金成分 耐磨性 耐腐蚀性 磷肥生产 

分 类 号：TQ440.52[化学工程—化学肥料工业] TG142.71[一般工业技术—材料科学与工程]