高硼铸钢的制备与应用  

Manufacture and Application of High Boron Cast Steel

作　　者：宋绪丁[1] 蒋志强[2] 符寒光[3] 

机构地区：[1]长安大学工程机械学院,陕西西安710064 [2]郑州航空工业管理学院工业工程系,河南郑州450015 [3]清华大学先进成形制造教育部重点实验室,北京100084

出　　处：《铸造技术》2006年第8期805-808,共4页Foundry Technology

基　　金：国家863高技术研究计划(2003AA4Z3300);河南省科技攻关计划(0535010700);河南省高校杰出科研人才创新工程(2006KYCX022)资助

摘　　要：针对常用磨球材质脆性大、耐磨性低、磨耗高，以硼为主要合金元素，研制了高硼铸钢磨球。为了净化钢液，研究了高硼钢液吹氩净化工艺，选择氩气流量15～25L／min，氩气压力10～15MPa，吹氩时间5～8min，吹氩后钢液的静置时间5～8min的吹氩净化处理工艺，钢液净化效果好。高硼铸钢磨球经950～1050℃加热后快速淬火和180～250℃回火处理后，具有硬度高、硬度均匀性好和韧性高等特点，用于研磨矿粉和煤粉，磨耗与高铬铸铁球相当，成本降低30％以上，综合效益显著。The usual grinding ball materials have large brittleness, low abrasion resistance and high wear-consume. High boron cast steel ball has been researched that boron is the main alloy element. In order to purify the molten steel, the blowing argon process of high boron molten steel has been developed. When the flux of argon is 15～25 L/min, the pressure of argon is 10～ 15 MPa, the blowing argon time is 5 ～8 min, the stewing time after blowing argon is 5 ～8 min, the purifying effect of molten steel is the best. After quenching at 950～ 1 050 13 and tempering at 180～250 13, high boron cast steel ball has high and even hardness and excellent impact toughness. Being used in the grinding ore and coal, the wear-consume of high boron cast steel ball is near to that of high chromium white cast iron ball, its production cost is 30% less than high chromium cast iron ball. Excellent economic benefit can be obtained when high boron cast steel ball is used in the grinding industry.

关 键 词：高硼铸钢 净化处理 磨球 冲击韧度 耐磨性 

分 类 号：TG269[金属学及工艺—铸造]