Process performance and practical application of wire drawing die steel

Process performance:
1:, forging billet heating temperature 1100-1140 ° C, open forging temperature 1050-1100 ° C, the final forging temperature ≥ 850 ° C, after forging cold or cold sand pit.
2, annealing: isothermal annealing heating temperature 870-900 ° C, isothermal temperature 700-720 ° C.
3: large forging, quenching quenching temperature of 620-660 ° C, small and medium-sized forging die quenching temperature 900-930 ° C.
4: large dies, tempering tempering temperature 620-660 ° C, hardness 38-42HRC, medium-sized die tempering temperature 610-630 ° C, hardness 41-44HRC, small die tempering temperature 470-610 ° C, hardness 38-42HRC.
The actual application:
The steel is suitable for large, medium-sized forging die, also applies to, small die, compared with the 5CrNiMo hot die steel service life, the service life of the 4CrMnSiMov the highest, such as the mode, before the beam mould, gear die, and other than 5CrNiMo die life is increased 0.5 times, more than 1-2 times the individual.