FIELD: tube production. SUBSTANCE: method comprises steps of placing a sliding current-supply lead on a tubular blank upon welding it in direction along its diameter, a width of the current supply lead being equal to a width of a gap between edges of the blank; displacing the current-supply lead relative to a welding arc in a direction of motion of the blank by a controllable value, being proportional to a thickness of a wall of the tubular blank. Such method allows to provide stable heating up and fusion of edges due to steady position of the welding arc. EFFECT: enhanced quality of welded tubes. 1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MAKING STRAIGHT-SEAM ELECTRICALLY WELDED TUBES | 1994 |
|
RU2056961C1 |
| METHOD OF CONTINUOUS MANUFACTURING OF WELDED TUBES | 0 |
|
SU1416230A1 |
| MILL FOR ASSEMBLING AND WELDING STRAIGHT-SEAM LARGE-DIAMETER TUBES OF FINITE LENGTH | 2002 |
|
RU2215605C2 |
| INNER MANDREL OF TUBE WELDING MILL | 1993 |
|
RU2070450C1 |
| WELDING STAND FOR LONGITUDINAL WELDED PIPES OF DEFINITE LENGTH ASSEMBLING AND WELDING | 2015 |
|
RU2612881C1 |
| METHOD FOR MAKING STRAIGHT-SEAM LARGE-DIAMETER TUBES | 1996 |
|
RU2119836C1 |
| METHOD OF PRODUCING LARGE-DIAMETER LONGITUDINAL WELDED PIPES | 2014 |
|
RU2571298C2 |
| TUBE WELDING MILL | 1992 |
|
RU2028846C1 |
| METHOD OF MAKING STRAIGHT-SEAM ELECTRICALLY WELDED LARGE DIAMETER TUBES FOR TRANSPORTING ABRASIVE LOOSE MATERIALS AND PULPS AND APPARATUS FOR PERFORMING THE SAME | 1992 |
|
RU2087226C1 |
| PROCESSING TOOL OF WELDING STAND FOR TUBE ELECTRIC WELDING UNIT | 0 |
|
SU1324701A1 |
