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Akahide, Kozo; Agusa, Kazuo; Ukebe, Teruo; Tsuboi, Junichiro

doi:10.2207/qjjws1943.50.1165

Cited by 2 publications

(2 citation statements)

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“…Akahide 6 and Paton 7 demonstrated that humping forms during SAW. Albright 8 has reported it during laser welding.…”

Section: Experimental Observationsmentioning

confidence: 99%

“…Bradstreet 2 is credited with publishing the first paper to directly recognise humping during GMAW. Since then, humping has been observed in GTAW, [3][4][5] submerged arc welding (SAW), 6,7 laser welding, 8,9 electron beam welding 10,11 and is even evident in other fields such as digital microfabrication using waxes. 12 Throughout these studies, different controlling variables have been identified, including welding atmosphere, metal composition, surface condition and heat input.…”

Section: Introductionmentioning

confidence: 99%

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Humping mechanisms present in high speed welding

Soderstrom¹,

Méndez²

2006

Science and Technology of Welding and Joining

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As welding speeds continually increase owing to automation and newer processes, a common defect that occurs is humping. Humping is the periodic occurrence of beadlike protuberances. The objective of the present investigation is to review current and previous researches that were made on humping, including both experimental and theoretical studies. It is found that humping can be classified into two distinct categories of formation: gouging region morphology and beaded cylinder morphology. Various theories that explain the two types of humping formation are examined. Experimental data compiled from many sources are presented to verify the models and explain the fundamental mechanisms of humping morphology. Humping prevention measures that can be applied directly to industrial fabrication are also included. The direct benefit is increased travel speeds that reduce production costs.

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“…Akahide 6 and Paton 7 demonstrated that humping forms during SAW. Albright 8 has reported it during laser welding.…”

Section: Experimental Observationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Humping mechanisms present in high speed welding

Soderstrom¹,

Méndez²

2006

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

show abstract

Behaviour of molten metal and optimum welding conditions for high heat input submerged‐arc welding with flux containing iron powder

Shuichi¹,

Yamaguchi²,

Nakano³

1996

Welding International

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The effect of the addition of iron powder to agglomerated flux on welding performance and the optimum welding conditions for high heat input welding were investigated. The main conclusions obtained are as follows: 1 The addition of iron powder to flux increases the deposition rate and improves welding operability. 2 The arc of the leading electrode was generated at a lower point in the molten metal, between the leading and the trailing electrodes, rather than at its top point. The penetration depth was influenced by the ratio of the area of the groove to that of the molten metal on which the leading arc is generated. 3 The cross sectional profile of the bead was influenced by the current ratio of the trailing electrode to that of the leading. The optimum ratio for avoiding weld defects ranged between 0.70 and 0.80. 4 The flux containing iron powder, together with the selection of optimum welding conditions, allowed tandem-wire one-pass submerged-arc welding to be used for 60 mm thick plates.

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Cited by 2 publications

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Humping mechanisms present in high speed welding

Humping mechanisms present in high speed welding

Behaviour of molten metal and optimum welding conditions for high heat input submerged‐arc welding with flux containing iron powder

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