【摘要】 采用电弧炉冶炼→LF炉精炼→VD炉真空精炼→方坯连铸→轧机轧制工艺流程,对Cr-Mn-Ti系齿轮钢添加微量硼进行了对比试验研究。每炉钢水量50～52t,硼的质量分数在0.000 8%～0.001 0%范围内,铸坯规格260mm×300mm,轧制成130mm的圆钢进行对比试验。试验结果表明,保持Cr-Mn-Ti系齿轮钢主体成分基本不变或锰、铬含量适当降低的情况下,添加微量硼元素,可稳定和显著提高其淬透性。更多还原

【Abstract】 Effect of boron on the properties of Cr-Mn-Ti gear steel produced by the process routing of EAF-LF-VD-bloom continuous casting-rolling was investigated.Tapping weight was 50 t to 52 t,the boron content was in the range of 0.000 8% to 0.001 0%,billet with size of 260 mm×300 mm was rolled to round steel with 130 mm for the contrast experiments.The experimental results show that the hardenability of Cr-Mn-Ti gear steel added trace boron is improved when main components of steel is kept unchanged,or the content of Mn,Cr is decreased befittingly.更多还原