Compound pipeline welding process

The invention relates to a compound pipeline welding process, which uses a compound bevel and comprises the steps of sealing welding, backing welding, transitional welding and filling cosmetic welding according to the operation sequence of bevel processing, sealing welding, assembly, backing welding...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DUAN ZHANJUN, REN ZHIYONG, ZHONG HONG, YUAN XUESONG, YANG LINA, CHEN XIAOXIA, WANG LAN, JIN ZUOXIANG, WANG DONGMEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention relates to a compound pipeline welding process, which uses a compound bevel and comprises the steps of sealing welding, backing welding, transitional welding and filling cosmetic welding according to the operation sequence of bevel processing, sealing welding, assembly, backing welding, transitional welding and cosmetic welding on site. The compound pipeline welding process has reasonable work procedures and is easy to apply. Due to the adoption of the compound pipeline welding process, the labor intensity of the worker can be greatly reduced, the one-time compound pipeline welding qualified rate is improved, the step of supplying argon into the pipe during the common welding-wire welding is omitted, the time is saved, the argon expense is reduced, and excellent benefit is obtained.