FIELD: metallurgy, namely, production of different cross section tubes from sheet blanks. SUBSTANCE: method for making tubes comprises steps of forming recesses, for example by rolling along wide edges of sheet blanks before shaping and welding tubes of them. Recesses may have depth equal to 0.5 of sheet thickness value and they may be provided with additional grooves and protrusions. EFFECT: enhanced strength, lowered cost of equipment for making sheet blanks of tubes. 7 cl, 16 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCTION OF PIPES | 2016 |
|
RU2635035C1 |
| WATER TUBE BOILER | 1999 |
|
RU2149322C1 |
| METHOD FOR MANUFACTURING MOLDS OF MACHINES FOR CONTINUOUS CASTING OF BILLETS | 2005 |
|
RU2308349C2 |
| METHOD OF PIPE PRODUCTION | 2012 |
|
RU2506132C2 |
| METHOD OF PRODUCING HOLLOW BILLETS WITH INNER LEDGES | 2015 |
|
RU2608153C2 |
| METHOD OF WELDED PIPELINES MANUFACTURE | 2016 |
|
RU2653381C1 |
| METHOD OF CONTINUOUS CASTING AND ROLLING OF METALS | 2007 |
|
RU2368456C2 |
| METHOD OF PIPELINE MANUFACTURING BY WELDING OF PIPES | 2016 |
|
RU2647063C1 |
| METHOD FOR MAKING METALLIC BOTTLES | 2000 |
|
RU2167019C1 |
| METHOD OF PRODUCING SHEETS | 0 |
|
SU1228932A1 |
