FIELD: process engineering.
SUBSTANCE: invention serves to increase uniformity of mechanical properties of wide hot-rolled sheets, mainly from high-strength low-alloy steel grades with hardness of 345-390. Billet from structural steel with carbon content not exceeding 0.16 % microalloyed by carbonitride-forming elements is rolled at thick-sheet hot rolling mill at rolling end temperature of 790-850 °C into 8-50 mm-thick strip. After rolling, said strip is subjected to differential water cooling.
EFFECT: uniform mechanical properties in wide range of thickness of 8-50 mm are reached by process parameters defined by claimed mathematical expressions.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF HOT ROLLING OF LOW-ALLOY SHEETS | 2010 |
|
RU2457912C2 |
| METHOD OF PRODUCTION OF HOT-ROLLED PLATES FROM LOW-ALLOYED STEEL | 2013 |
|
RU2561569C2 |
| METHOD TO PRODUCE HOT-ROLLED COILED STOCK OF LOW-ALLOYED STEEL | 2011 |
|
RU2450061C1 |
| METHOD FOR HOT ROLLING OF LOW-ALLOYED STEEL | 2007 |
|
RU2365439C2 |
| METHOD OF PRODUCTION OF HOT-ROLLED PIPE STEEL ROLLS | 2007 |
|
RU2350413C1 |
| MANUFACTURING METHOD OF HOT-ROLLED TUBE STEEL COILS | 2008 |
|
RU2373003C1 |
| METHOD OF PRODUCING HOT-ROLLED LOW-ALLOY STEEL REELS | 2010 |
|
RU2455088C2 |
| METHOD OF STRIPS HOT ROLLING | 2007 |
|
RU2350412C2 |
| METHOD OF PRODUCING TUBE STEEL HOT-ROLLED COILS | 2008 |
|
RU2393933C1 |
| MANUFACTURING METHOD OF HOT-ROLLED PIPE STEEL ROLLER | 2008 |
|
RU2356658C1 |
