Abstract: The wear-resistant steel NM360 (/% : 0. 10 〜0. 15C, 0. 50 〜1. 50Mn, W 0. 001P, 0.008S, 0. 20 〜 0. 50Mo ,0.015 ~ 0. 03Nb,0.018 ~ 0.15Ti, ' 0.035Als, 0,001 2 ~ 0.003 0B, w 0.008N, W 0.000 3 H, W 0.0030) 32 mm plate for vibration wheel of roller are designed and developed. After quenching at 900℃ . + tempering at 200 ℃, the structure of steel is tempered martensite with tensile strength 1 150 ~ 1 182 MPa,elongation 15% - 17. 5% ; impact energy 150 ~226 J surface HBW brinell hardness value 385 -402. With cold bending diameter 32 mm,and bending center angles 45°, 90°, 150° and 180° ,the bending test is all qualified. After welding with GM120 welding wire, the tensile strength of the welded joint is 1 052 MPa,the impact energy of the weld is 58 ~63 J,and the HV hardness value of the weld is 390 ~396.

Key words: NM360 Steel, Vibration Wheel, Weld-Ability, Cold Bending Performance ,

摘要： 设计和开发了压路机振轮用耐磨钢NM360(/%:0.10～0.15C,0.50～1.50Mn,≤0.001P,≤0.008S,0.20～0.50Mo,0.015～0.03Nb,0.018～0.15Ti,≥0.035Als,0.0012～0.003 0B,≤0.008N,≤0.0003 H,≤0.003O)32 mm板。900℃淬火+200℃回火后,该钢组织为回火马氏体;抗拉强度1150～1182 MPa,延伸率15%～17.5%;冲击功150～226 J;表面HBW布氏硬度值385～402;冷弯直径为32 mm,冷弯角度45°、90°、150°和180°冷弯试验全部合格;采用GM120焊丝焊接后,焊接接头抗拉强度为1 052 MPa,焊缝冲击功为58～63 J,焊缝HV硬度值390～396。

关键词: NM360钢, 振轮, 焊接性, 冷弯性