Quenching of small forgings of structural steels from the forging temperature

Abstract

1. The variation of the degree of plastic deformation from 10 to 90% during forging has no significant effect on the mechanical properties of forgings of steel No. 45 quenched from the forging temperature. 2. The mechanical properties of forgings of steels No. 45 and 40Kh change little after the end of forging and quenching with additional colling from 950, 900, 850, and 800°C. 3. Quenching after the end of forging at different temperatures and different degrees of deformation makes it possible to obtain better mechanical properties as compared to those indicated by the TU specifications. 4. We have shown that it is feasible to quench small forgings of steel No. 45, 40Kh, and 0Kh18N10T from the forging temperature. 5. For 0Kh18N10T steel decrease in the forging temperature and subsequent quenching from 1000 to 800°C increases the strength.