FIELD: technological processes.
SUBSTANCE: present invention relates to carbon steel sheet with a barrier coating containing nickel and chromium. To ensure excellent resistance to delayed cracking obtained by using sheet steel for quenching under press, which includes hot molding, weight ratio of Ni/Cr ranges from 1.5 to 9. Barrier coating is applied by means of physical deposition from vapor phase, electro galvanization, galvanization during immersion into melt or is applied by means of roller.
EFFECT: providing excellent resistance to delayed cracking.
20 cl, 1 tbl
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RU2682508C1 |
