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| Experimental Study on Adding Boron in Cr-Mn-Ti Gear Steel |
| SHEN Jing-xia1，2,SUN Yong-xi2,LI Fa-xing2,YU De-he2,ZHANG Jun-ping2,SHI Jun-qiang2 |
1. School of Metallugical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Special Steel Business Unit, Laiwu Iron and Steel Co., Ltd., Laiwu 271105, Shandong, China |
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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 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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Received: 08 April 2011
Published: 16 January 2012
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2012, Vol. 47 
