摘要
以Si、Mn、Cr为主要合金元素 ,加入少量Mo、V、Ti、B、稀土进行微合金化和变质处理 ,在空冷淬火条件下 ,获得了综合性能优良的贝氏体组织。低合金贝氏体铸钢的硬度和韧性高、耐磨性好 ,且生产工艺简单 ,贵重合金元素加入量少 ,生产成本低。这种材料用于制造矿石破碎机的鄂板和研磨矿粉的磨机衬板 ,其使用寿命比高锰钢提高 1.5～ 2 .5倍 ;用于制造球磨机磨球 ,球耗比普通锻钢球和低铬铸铁球低5 0 %～ 80 % ,和高铬铸铁球相当 ;用于制造铁矿粉输送管道 ,其寿命比 16Mn钢提高 3～ 4倍。因此 ,这种低合金铸钢应用于矿山行业 ,可明显提高破磨设备运转率 ,降低矿粉加工成本。介绍了低合金空冷贝氏体铸钢的成分。
Through micro- alloying, modification and air quenching, which Si, Mn and Cr are taken as the major alloying elements and a small amount of Mo, V, Ti, B and rare earth (RE)are added in also, a bainitic structure having good combination property has been obtained. This low-alloy bainite cast steel has high hardness, toughness and wear resistance, and its production process is simple, the adding quantities of the expensive alloying elements and its production cost are low. If this low-alloy bainite cast steel to making the jaw of ore crusher or the liner of ore mill is used, their service life is 1.5～2.5 times longer than that of the jaw or liner making from high manganese steel; If this low-alloy bainite cast steel to making the ball for ball mill is used, the consumption of low-alloy bainite cast steel ball is 50%～80% lower than that of common forged steel ball or low-chromium cast iron ball, and is equivalent to that of high-chromium cast iron ball; If this low-alloy bainite cast steel to making the pipe for conveying iron ore powder is used, its service life is 1.5～2.5 times longer than that of the pipe making from 16Mn steel. Therefore, The applications of this low-alloy bainite cast steel to ore crusher and ore mill can remarkably increase the operational efficiency of these equipments and decrease the processing cost of ore powder. This paper introduces the composition, structure and properties of the low-alloy bainite cast steel.
出处
《矿业研究与开发》
CAS
2004年第2期43-46,共4页
Mining Research and Development
关键词
低合金铸钢
贝氏体
鄂板
衬板
磨球
管道
矿山
Low-alloy cast steel, Bainite, Jaw plate, Liner, Grinding ball, Pipe, Mine
