[1] [1] NIKIFOROV E P. Raising the reliability of overhead transmission lines under the action of atmospheric loads［J］. Power Technology and Engineering, 2004, 38(1): 49-53.

[2] [2] GU J J, QIN Y Q, CHEN Z L, et al. Effects of high frequency induction heating quenching and tempering on microstructure and hardness of 42CrMo steel［J］. Hot Working Technology, 2010, 39(22): 160-162.

[3] [3] FENG Y M, HE B L, JIANG M M, et al. Application of surface technology in manufacture and repair of die［J］. Hot Working Technology, 2018, 47(4): 30-34.

[4] [4] XU H W, PAN Z X, WEN D G. Research on status and development of laser quenching technology［J］. China Printing and Packaging Study, 2014, 6(2): 1-8.

[5] [5] WANG H Z, ZHAI Y W, ZHOU L Y. Laser surface strengthening of 42CrMo steel for bending Die［J］. Heat Treatment of Metals, 2020, 45(8): 222-227.

[6] [6] MIOKOVIC′ T, SCHULZE V, VHRINGER O, et al. Prediction of phase transformations during laser surface hardening of AISI 4140 including the effects of inhomogeneous austenite formation［J］. Materials Science and Engineering: A, 2006, 435/436: 547-555.

[7] [7] MORADI M, ARABI H, MOGHADAM M K, et al. Enhancement of surface hardness and metallurgical properties of AISI 410 by laser hardening process; diode and Nd: YAG lasers［J］. Optik, 2019, 188: 277-286.

[8] [8] XUE T. Analysis of laser surface hardening with conventional surface hardening in mold applications［J］. Equipment Manufacturing Technology, 2012(4): 232-234.

[9] [9] LIU H B, SHEN X T. Influence of laser quenching, induction quenching and flame quenching on die deformation ［J］. Automobile Technology & Material, 2016(7): 22-24.

[10] [10] LIN M H.Laser quenching process parameter research on 45 steel［D］.Guangzhou: South China University of Technology,2013.

[11] [11] ZHANG Q L, TONG W H, CHEN Z J, et al. Effect of spot size on geometrical characteristics of laser deep quenching hardened layer of 42CrMo steel［J］. Surface Technology, 2020, 49(1): 254-261.

[12] [12] TOTIK Y, SADELER R, ALTUN H, et al. The effects of induction hardening on wear properties of AISI 4140 steel in dry sliding conditions［J］. Materials& Design, 2003, 24(1): 25-30.

[13] [13] HAN J T, WU M P, CUI C. Effect of laser power on microstructure and friction and wear properties of laser clad layer on 42CrMo steel［J］. Heat Treatment of Metals, 2020, 45(11): 214-217.

[14] [14] ULUTAN M, CELIK O N, GASAN H K, et al. Effect of different surface treatment methods on the friction and wear behavior of AISI 4140 steel［J］. Journal of Materials Science & Technology, 2010, 26(3): 251-257.

[15] [15] WANG X L, TAN Y F, TAN H, et al. Study on the abrasive wear resistance of alloy 42CrMo［J］. Machine Building & Automation, 2008, 37(1): 10-12.