How to improve toughness by tempering 45 Quenched And Tempered Steel

45 Quenched And Tempered Steel can effectively improve toughness after proper tempering treatment. Usually, tempering temperature is the key factor.
Generally speaking, for 45 Quenched And Tempered Steel, it is more appropriate to choose tempering in the range of 550 - 650℃. When the tempering temperature is too low, the residual stress in the steel cannot be fully eliminated, resulting in insignificant improvement in toughness, and the overall performance of the material may be reduced due to stress concentration. If the temperature is too high, the strength of the steel may drop too much. Although the toughness is increased, it may not meet the comprehensive requirements of strength and toughness in actual use.
During the tempering process, the tempering time also needs to be controlled. Generally, the tempering time is about 1 - 3 hours. If the time is too short, the organizational transformation is incomplete and the toughness cannot be fully improved; if the time is too long, the production cost will increase and the material performance may be adversely affected.
In addition, the cooling rate after tempering will also have a certain effect on toughness. Usually, slow cooling is adopted, such as furnace cooling or air cooling, which can avoid the generation of new internal stress during the cooling process, which is conducive to maintaining and further improving toughness. By reasonably controlling parameters such as tempering temperature, time and cooling rate, the structure of 45 quenched and tempered steel can be optimized, thereby effectively improving its toughness and meeting the requirements of material properties for different engineering applications.
If you want to know how to temper 45 Quenched And Tempered Steel to improve toughness, you can contact Zhongao's professional technicians, and we will do our best to help you!