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0.0008%～0.0010%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。
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 50t to 52t, the boron content was in the range of 0.0008% to 0.0010%, billet with size of 260mm×300mm was rolled to round steel with 130mm 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.
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