FIELD: process engineering.
SUBSTANCE: proposed method comprises heating slab to temperature exceeding Ac3, roughing, subcooling, finishing, accelerated sheet surface cooling followed by decelerated cooling in air at rack. High strength and viscous properties distributed uniformly over sheet cross-section result from adjustment of finishing temperature T"кп" in the range of 800÷840°C, that if accelerated cooling in the range of 520÷580°C, and that of decelerated cooling rate of 7.5÷10°C/h.
EFFECT: higher quality of hot-rolled steel.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING LOW-ALLOY K52-K60-GRADE PIPE STEEL | 2011 |
|
RU2458751C1 |
| MANUFACTURING METHOD OF PLATES FROM LOW-ALLOY PIPE STEEL WITH STRENGTH CLASS K60 | 2012 |
|
RU2479639C1 |
| MANUFACTURING METHOD OF PLATES FROM LOW-ALLOY PIPE STEEL WITH STRENGTH CLASS K60 | 2011 |
|
RU2465344C1 |
| METHOD MAKING SHEETS FROM LOW-ALLOY PIPE STEEL | 2011 |
|
RU2458752C1 |
| MANUFACTURING METHOD OF PLATES FROM LOW-ALLOY PIPE STEEL WITH STRENGTH CLASS K60 | 2012 |
|
RU2479638C1 |
| MANUFACTURING METHOD OF PLATES FROM LOW-ALLOY PIPE STEEL WITH STRENGTH CLASS K60 | 2011 |
|
RU2465345C1 |
| METHOD OF PRODUCING SHEETS FROM LOW-ALLOY TUBE STEEL OF K60 STRENGTH CLASS | 2011 |
|
RU2475315C1 |
| METHOD OF PRODUCING LOW-ALLOY X70-GRADE PIPE STEEL | 2011 |
|
RU2458754C1 |
| METHOD OF PRODUCING SHEETS FROM LOW-ALLOYED TUBE STEEL OF X60 STRENGTH GRADE | 2011 |
|
RU2458156C1 |
| MANUFACTURING METHOD OF PLATES FROM LOW-ALLOY PIPE STEEL WITH STRENGTH CLASS K56 | 2011 |
|
RU2465343C1 |
