FIELD: process engineering.
SUBSTANCE: invention relates to production of hot-rolled stock from low-alloy steel meant for making of parts by stamping and shaping. This process comprises slabs heating at continuous wide-strip mill at roughing and finishing stands and cooling at laminar plant. Non-flatness of blanks not exceeding 7 mm/m after lengthwise melting of hot-rolled strip results from setting of the number of actuated manifolds of the laminar plant any section from the strip bottom and top sides equal to 1:2. Water flow rate at top manifolds is set to 0.70-0.90 relative to that at bottom manifolds. This rules out the presence of bainite in metal rolled stock in j over the depth from both sides of the strip and the difference in ferrite grain size between the surfaces no exceeding 1 unit.
EFFECT: higher efficiency of the process.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MANUFACTURE OF SPECIALLY THIN HOT-ROLLED STRIPES ON A WIDE-STRIPED MILL OF THE CASTING COMPLEX | 2018 |
|
RU2679159C1 |
| METHOD OF PRODUCTION OF HIGHER-STRENGTH HOT-ROLLED STOCK | 2014 |
|
RU2547087C1 |
| MANUFACTURING METHOD OF STRIPS OF LOW-ALLOYED WELD STEEL | 2013 |
|
RU2551324C1 |
| METHOD TO PRODUCE HOT-ROLLED COILED STOCK OF LOW-ALLOYED STEEL | 2011 |
|
RU2450061C1 |
| METHOD OF PRODUCING HOT-ROLLED TUBE STEEL ROLLS | 2010 |
|
RU2430799C1 |
| METHOD FOR HOT ROLLING OF LOW-ALLOYED STEEL | 2007 |
|
RU2365439C2 |
| METHOD OF PRODUCTION OF HOT DIPPED GALVANISED ROLL STOCK OF INCREASED STRENGTH FROM LOW-ALLOYED STEEL FOR COLD STAMPING | 2014 |
|
RU2563909C9 |
| PRODUCTION OF COILED STOCK AT CONTINUOUS WIDE-STRIP MILL | 2014 |
|
RU2563911C2 |
| METHOD FOR PRODUCTION OF ROLLED STRIP ON WIDE-BAND ROLLING MILL | 2018 |
|
RU2686504C1 |
| METHOD OF STRIP COLD-ROLLING FROM LOW-ALLOY STEEL OF STRENGTH CLASS 200 | 2011 |
|
RU2452778C1 |
