FIELD: process engineering.
SUBSTANCE: invention relates to tube fabrication by resistance welding and may be sued in producing downhole tubes. To produce tubes with higher-quality welded seam, edges on both sides of strip top and bottom sides in roll gauging with edge guiding element are formed with inclination prior to resistance welding. Forming is performed to allow resistance welding with butt angle between edges carrying from -1° to +1°.
EFFECT: higher efficiency.
28 cl, 12 dwg, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PRODUCING TUBES WITH HIGHER PROPERTIES OF WELDED SEAMS BY CONTACT RESISTANCE WELDING | 2006 |
|
RU2417851C2 |
| EQUIPMENT FOR PRODUCING TUBES BY CONTACT WELDING WITH HIGH-QUALITY WELDED SEAM | 2006 |
|
RU2411095C2 |
| METHOD OF PRODUCING LONGITUDINAL ELECTRIC-WELDED PIPES | 2023 |
|
RU2827008C1 |
| WELDED BY ELECTRICAL RESISTANCE WELDING STEEL PIPE, HAVING EXCELLENT RESISTANCE TO HYDROGEN INDUCED CRACKING (HIC) AND LOW-TEMPERATURE SHOCK VISCOSITY OF JOINT WELD RECEIVED BY ELECTRIC CONTACT WELDING AND METHOD OF ITS MANUFACTURE | 2013 |
|
RU2630725C2 |
| METHOD FOR MAKING WELDED CLOSED SECTIONS | 0 |
|
SU1764907A1 |
| METHOD FOR SHAPING TUBULAR BLANK AND SLOT WASHER FOR PERFORMING THE SAME | 1998 |
|
RU2149721C1 |
| TUBE FORMING MILL | 1993 |
|
RU2042445C1 |
| METHOD FOR PRODUCTION OF ELECTRIC-WELDED STRAIGHT-SEAM PIPES | 0 |
|
SU1799650A1 |
| METHOD OF MAKING WELDED STRAIGHT-SEAM TUBES | 1993 |
|
RU2040988C1 |
| METHOD OF PRODUCING WELDED TUBES | 0 |
|
SU1611486A1 |
