FIELD: machine building.
SUBSTANCE: invention relates to machine building, particularly, to high-strength articles operating under considerable dynamic and cyclic loads.
EFFECT: for increasing impact strength, fatigue durability and crack resistance of steel items at maintaining their strength due to formation in steel disperse mixed martensite-bainitic structure, reliable high-strength articles method comprises heating billet to austenitizing temperature, plastic deformation, intermediate cooling in martensitic transformation temperature range, additional heating to temperature of intermediate (bainitic) converting 350 °C and final cooling, at that, intermediate cooling after plastic deformation is performed in molten nitrate, heated to temperature of 180-270 °C, and plastic deformation is performed with degree of 20-40 %.
1 cl, 2 dwg
| Title | Year | Author | Number | 
|---|---|---|---|
| METHOD FOR PRODUCING HIGH-STRENGTH STEEL SHEET | 2023 | 
 | RU2812417C1 | 
| METHOD FOR PRODUCING HIGH-STRENGTH STEEL SHEET | 2023 | 
 | RU2813069C1 | 
| METHOD FOR PRODUCING HIGH-STRENGTH STEEL SHEET | 2023 | 
 | RU2813066C1 | 
| METHOD FOR PRODUCING HIGH-STRENGTH STEEL SHEET | 2023 | 
 | RU2813064C1 | 
| METHOD OF THERMOMECHANICAL TREATMENT OF TOOL | 0 | 
 | SU742473A1 | 
| METHOD OF STEEL ARTICLES MANUFACTURING | 0 | 
 | SU1749258A1 | 
| METHOD AND APPARATUS FOR CONTINUOUS THERMAL TREATMENT OF ELONGATED STEEL PRODUCTS | 2001 | 
 | RU2200202C2 | 
| METHOD OF PIECES MACHINING | 1990 | 
 | RU2068003C1 | 
| METHOD OF THERMOMECHANICAL TREATMENT OF HYPOEUTECTOID CARBON STEEL BILLETS | 0 | 
 | SU767222A1 | 
Authors
Dates
2016-07-10—Published
2015-03-05—Filed