机构:
Lincoln Electric Co, Cleveland, OH,, USA, Lincoln Electric Co, Cleveland, OH, USALincoln Electric Co, Cleveland, OH,, USA, Lincoln Electric Co, Cleveland, OH, USA
Magic, S.
[1
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机构:
[1] Lincoln Electric Co, Cleveland, OH,, USA, Lincoln Electric Co, Cleveland, OH, USA
The submerged arc fillet welds were made with L70, 1/8-in. solid wire (F72-EA1-A2) and 860 flux. Closure welds were made with L61 1/8-in. solid wire (F72-EM12K) and 860 flux. All submerged arc welding procedures were set at 450-500 A (DCEP), 28-30 V, with a travel speed of 19 ipm. Preheat of 150 degree F was required for the closure welds only, with a 350 degree F maximum interpass temperature allowable for all welds. Welds were inspected and tested ultrasonically and with magnetic particles. A localized hydrostatic test was also performed at 2900 psi to insure weld quality. In all, six fully automatic NA-3S submerged arc systems and nine semiautomatic welding machines were used on the project. The 7640 welds required were completed on schedule by fabricating a minimum of 24 pipes per day.
机构:
Management Consulting & Research, Inc, Falls Church, VA, USA, Management Consulting & Research Inc, Falls Church, VA, USAManagement Consulting & Research, Inc, Falls Church, VA, USA, Management Consulting & Research Inc, Falls Church, VA, USA
机构:
Inst de Petrol si Gaze Ploiesti, Rom, Inst de Petrol si Gaze Ploiesti, RomInst de Petrol si Gaze Ploiesti, Rom, Inst de Petrol si Gaze Ploiesti, Rom
Stan, Al.D.
Stolanovel, D.
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机构:
Inst de Petrol si Gaze Ploiesti, Rom, Inst de Petrol si Gaze Ploiesti, RomInst de Petrol si Gaze Ploiesti, Rom, Inst de Petrol si Gaze Ploiesti, Rom