U71Mn重轨钢中的白点与含氢量  

FLAKES AND HYDROGEN CONTENT IN U71Mn HEAVY RAIL STEEL

作　　者：李培基[1] 冼爱平[1] 王仪康[1] 陈仁义[2] 梅东生[2] 

机构地区：[1]中国科学院金属研究所 [2]冶金工业部攀枝花钢铁研究院

出　　处：《金属学报》1992年第10期A445-A448,共4页Acta Metallurgica Sinica

摘　　要：用钢水吹氢技术对攀钢生产的U71Mn重轨钢进行了临界氢含量试验。结果表明,这种钢钢水的氢含量为2.5ppm时,成品中未出现白点;当钢水氢含量增加到3.3—5.8ppm时,部分钢坯中形成白点;当钢中Mn含量增加时,出现白点的氢含量将下降。还观察到钢中生成白点的孕育期是不确定的。The content of hydrogen allowed in U71Mn heavy rail steel, produced by the Panzhihua Iron and Steel Company, was investigated by technique of hydrogen blowing into molten steel. Experimental results revealed that the critical hydrogen content is limited to 2.5 ppm. If the content in melt increases to 3.3—5.8 ppm, the flakes may form in the steel. And it will further drop as the increase of Mn contained. It was also observed that the incubation period for flake forming seems to be undetermined.

关 键 词：白点 钢轨钢 含氢量 

分 类 号：TG142.72[一般工业技术—材料科学与工程]