Effects of Tempering Process on Structure Property in 300M Steel
The 300M steel of special vehicle transmission shaft was used for the study,by adjusting the tempering tem-perature with intervals of 50 ℃ within 200～350 ℃,we finished the once tempering process and the second tempering process.The metallographic structure,hardness,tensile strength,impact test and rotary bending fatigue test were carried out on the samples after heat treatment,and the variation law with heat treatment parameters was obtained,the optimal heat treatment process parameters were obtained which provided theoretical foundation and data support for production prac-tice.
NETL
NSTL
万方数据
