China Equipment Network's report on Tianlong Company
Application of heat treatment equipment in the heat treatment of wind turbine gearbox gears. Currently, the wind turbine gearboxes used in China are mainly from foreign companies such as GE, Vestas, Bosch Rexroth, and others, as well as gearboxes from domestic companies such as Nantong High-Speed Gear, Chongqing Gear, Daqi Dazhong, Hangzhou Gear, and Erzhong. The materials for the external gears of the gearboxes include 17CrNiMo6, 15CrNi6, 20CrNi2MoA, 17Cr2Ni2MoA, etc., and the final heat treatment method usually used is carburizing and quenching; the materials for the internal gears are 42CrMoA, 34Cr2Ni2MoA, etc., and usually nitriding or high-frequency processes are used.