FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy and may be used in producing cold-rolled hard-drawn sheet steel with or without coating for further bending or forming, particularly, roof sheet iron. Proposed method comprises heating, hot rolling of strips, water cooling, etching and cold rolling to strip final thickness h. Note here that strip cold rolling is performed with total reduction defined by the following relationship: 
D=1.50-1.70; E=2.2-4.9; F=1.0-3.4. Note also that hot rolling is carried out to thickness defined by the following relationship 
where H is hot-rolled strip thickness.
EFFECT: maximum strength at preset ductility.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING WORK-HARDENED LOW-CARBON SHEET STEEL | 2012 |
|
RU2483121C1 |
| ULTRAFINE TIN MANUFACTURING METHOD | 2013 |
|
RU2511155C1 |
| METHOD OF PRODUCING COLD-ROLLED STOCK FOR WRAPPING STRAP | 2012 |
|
RU2499640C1 |
| PRODUCTION METHOD OF COLD-ROLLED MILL PRODUCTS FOR BALING BAND | 2013 |
|
RU2529325C1 |
| METHOD OF PRODUCING COLD-ROLLED SHEET STEEL FROM ULTRA-LOW-ALLOY STEEL | 2011 |
|
RU2452777C1 |
| METHOD OF PRODUCTION OF COLD ROLLED SHEET OF HARD DRAWN STEEL | 2008 |
|
RU2369456C1 |
| METHOD OF PRODUCTION OF COLD ROLLED METAL OF UPGRADED STRENGTH | 2007 |
|
RU2358025C1 |
| METHOD OF PRODUCING HOT-ROLLED SHEET STEEL | 1999 |
|
RU2164248C2 |
| COLD ROLLED STRIP MANUFACTURE METHOD | 2001 |
|
RU2203965C2 |
| MANUFACTURING METHOD OF COLD-ROLLED STRIP FROM LOW-CARBON STEEL | 2008 |
|
RU2381844C1 |
