2.8 Advantages of Submerged Arc WeldingCost per unit length of joint is relatively lowThe arc is under a blanket of flux, which virtually eliminates arc flash, spatter,and fume.• Extremely high deposition rates and welding speeds are possible.• Sound welds are readily made (with good process design and control).High current densities increase weld penetration and decrease the need foredge preparation.High speed welding of thin sheet steels at over 2.5 m/min is possible.Can be easily AutomatedMinimum welder training is required (relatively unskilled welders can beemployed).• Low hydrogen weld deposits can be produced.• The flux acts as a scavenger and deoxidizer to remove contaminants such asoxygen, nitrogen, and sulphur from the molten weld pool. This helps toproduce sound welds with excellent mechanical properties.262.9 Limitations of Submerged Arc WeldingInitial cost of wire feeder, power supply, controls, and flux-handlingequipment is high.Limited to ferrous (steel or stainless steels) and some nickel based alloys.Because of the high heat input, SAW is most commonly used to joinsteels more than 6.4mm thick.• Normally limited to the 1F, 1G, and 2F positions.Normally limited to long straight seams or rotating pipes or vessels.Requires relatively troublesome flux handling systems.Flux and slag residues can present a health & safety issue.Requires inter-pass and post weld slag removal.

Submerged-arc welding (SAW) is a common arc welding process that involves the formation of an arc…

Answered: Submerged Arc Welding

Engineering

Mechanical Engineering

Submerged Arc Welding

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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