论文部分内容阅读
内齿圈(见图1)用50M_n钢热轧,经正火加高温度回火,然后机加工成形,滚道面中频淬火、回火后装机。滚道面用可控硅中频连续感应加热淬火。电参数:电压380～400V,电流125～130A,功率因数cosψ=0.96,变压比16:1,频率3000Hz,功率40～50kW。线速度:280mm/m,加热温度870°～890℃,淬火冷却介质:1‰聚乙烯醇水溶液。井式回火炉160°～180℃回火二小时。用硬度试笔测试HRC>55。用着色探伤法检查
Ring gear (see Figure 1) with 50M_n steel hot-rolled, normalized high temperature tempering, and then machined shape, rolling surface IF quenching, after the installation of equipment. Raceway with silicon controlled induction heating and quenching. Electrical parameters: voltage 380 ~ 400V, current 125 ~ 130A, power factor cosψ = 0.96, transformer ratio 16: 1, frequency 3000Hz, power 40 ~ 50kW. Line speed: 280mm / m, heating temperature 870 ° ~ 890 ℃, quenching cooling medium: 1 ‰ polyvinyl alcohol aqueous solution. Pit type furnace 160 ° ~ 180 ℃ tempering two hours. Hardness test pen test HRC> 55. Check with colored test