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
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.
2012, Vol. 47 
