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发明公开
CN109457183A 一种低硫易切削齿轮钢及其制备方法 无效 - 驳回

一种低硫易切削齿轮钢及其制备方法
摘要：
本发明公开了一种低硫易切削齿轮钢及其制备方法，按重量百分数所述齿轮钢包括如下化学成分：C：0.17～0.23％、Si：0.17～0.37％、Mn：0.80～1.15％、Cr：1.00～1.35％、P：≤0.035％、S：0.020～0.040％、Ti：≤0.04～0.10％、Al：≤0.04％、O：≤20×10-4％，余量为Fe及不可避免的杂质。所述制备方法包括以下步骤：1)电炉冶炼；2)LF炉精炼；3)VD炉真空精炼；4)连铸；5)热送轧制。本发明所得齿轮钢具有良好切削加工性，并且在加工锻造过程中不会产生裂纹。
摘要（英）：

The invention discloses low-sulfur easy-to-cut gear steel and a preparation method thereof. The gear steel comprises, by weight, 0.17-0.23% of C, 0.17-0.37% of Si, 0.80-1.15% of Mn, 1.00-1.35% of Cr,0-0.035% of P, 0.020-0.0240% of S, 0.04-0.10% of Ti, 0-0.04 of Al, 0-20*10<-4>% of O and balance Fe and inevitable impurities. The preparation method includes the following steps of smelting in an electric furnace, refining in an LF, vacuum refining in a VD furnace, continuous casting and hot transferring and rolling. The gear steel has good cutting machinability and does not generate cracks in the machining and forging processes.

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