Heat Treatment Regime Optimization for High-Strength Low-Carbon Steel Forged Slabs

Аннотация

The quality of rolled product of high-strength low-carbon steel prepared from slabs using an improved reduced heat treatment regime is studied. It is shown that use of this heat treatment regime for slabs of high-strength vessel steel (Cr–4Ni–Mo–V composition), including a high-temperature tempering operation, with a hydrogen content in molten steel not more than 1.8 ppm provides rolled product quality at the level of metal of standard production. The use of the new regime makes it possible to reduce significantly the production cycle duration.