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 |
|---|---|---|---|
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RU2630725C2 |
| METHOD FOR MAKING WELDED CLOSED SECTIONS | 0 |
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SU1764907A1 |
| METHOD FOR SHAPING TUBULAR BLANK AND SLOT WASHER FOR PERFORMING THE SAME | 1998 |
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| TUBE FORMING MILL | 1993 |
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| METHOD FOR PRODUCTION OF ELECTRIC-WELDED STRAIGHT-SEAM PIPES | 0 |
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| METHOD OF MAKING WELDED STRAIGHT-SEAM TUBES | 1993 |
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| METHOD OF PRODUCING WELDED TUBES | 0 |
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| HIGH-STRENGTH THIN-WALLED STEEL PIPES WELDED BY ELECTRIC RESISTANCE WELDING WITH HIGH IMPACT STRENGTH AND METHOD OF THEIR PRODUCTION | 2013 |
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RU2613824C2 |
