BN型易切削钢的冶炼工艺及其切削加工性  

Smelting process and machinability of BN-type free cutting steel

作　　者：王毓男[1,2] 包燕平[2] 王敏[2] 张乐辰[2] 

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《北京科技大学学报》2013年第7期869-874,共6页Journal of University of Science and Technology Beijing

摘　　要：对BN型易切削钢的冶炼工艺与切削加工性进行了研究.通过实验室热态实验得到不同B、N元素含量的试样,利用理论计算研究试样中主要夹杂物的析出规律,然后对BN夹杂物的形貌、尺寸及组成进行分析,最后对试样进行力学性能测试及切削实验.结果发现在钢中添加B、N元素能够明显改善钢的切削性能,且不影响钢的力学性能.This article studied the smelting process and machinability of BN-type free cutting steel. Samples with different B and N contents were prepared by cold crucible induction melting. The precipitation of main inclusions in sample was investigated by theoretical calculation. After that, the morphology, size and composition of BN type inclusions were analyzed. The mechanical test and machining test of the samples were carried out. It is found that adding B and N elements into steel can improve the machinability of the steel, but do not affect the mechanical properties.

关 键 词：易切削钢 炼钢 切削加工性 氮化硼 夹杂物 

分 类 号：TF741.7[冶金工程—钢铁冶金]