Products tagged with 'gmaw'

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Applying Lessons from Welding to Large Scale Metal Additive Manufacturing

Product Number: MPWT19-15370

Author: Michael Kottman, Mark Douglass, Badri K. Narayanan

Publication Date: 2019

$0.00

Direct energy deposition processes that utilize wire feedstock have been deployed to deposit and fabricate near net shape functional metal parts at high deposition rates. Is this just multi-pass welding or is there more to it? Should the material requirements for additive be the same as those defined for welding? Is weld quality the same as part quality? A large metal additive part fabricated using a robotic wire arc additive system will be used to demonstrate the similarities and identify critical differences between essential variables for welding and additive manufacturing. The opportunities for both welding and additive manufacturing to learn and leverage one another to develop unique and novel materials, process controls and further fundamental understanding of metal deposition processes will be outlined.

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Corrosion Performance of N10675 Alloy Welds Prepared by Different Welding Methods

Product Number: 51324-20730-SG

Author: Ling Chen; Jeremy L. Caron; Vinay Deodeshmukh

Publication Date: 2024

$40.00

The corrosion performance of N10675 alloy weldments prepared by GMAW (Gas Metal Arc Welding/MIG Welding), GTAW (Gas Tungsten Arc Welding/TIG Welding) and SMAW (Shielded Metal Arc Welding/Stick Welding) were evaluated. Welded plates (0.5”-thick) and sheets (0.125”-thick) were investigated in this work. Overall corrosion loss rates in boiling 20%HCl acid were similar, irrespective of the type of welding method. Intergranular penetration attack occurred at the heat-affected-zones (HAZ) of all three as-welded 0.5”-thick plates and was more pronounced near the weld root. GMAW samples exhibited a slightly deeper corrosion penetration attack compared to GTAW and SMAW samples. While the corrosion rates of 0.5”-thick weld samples postweld heat treated (PWHT) at 1066°C were slightly higher than as-welded samples for each welding method, PWHT was shown to significantly lessen the depth of intergranular corrosion attack in the HAZ. In contrast, the impact of PWHT on the corrosion performance of the thin-gauge sheet welds was negligible. In addition, no stress-corrosion cracking (SCC) occurred on 0.125”-thick U-bend welded sheets prepared by GMAW, GTAW and SMAW.

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SP0472-2010-SG (Chinese), Methods and Controls to Prevent In-Service Environmental Cracking of Carbon Steel Weldments in Corrosive Petroleum Refining Environments

Product Number: 21151-SG

ISBN: 1-57590-115-3

Publication Date: 2010

$179.00

Guidelines to prevent most forms of environmental cracking of weldments in carbon steel refinery equipment and piping. Processes covered: SMAW, GMAW, FCAW, GTAW, SAW.

Products tagged with 'gmaw'

Applying Lessons from Welding to Large Scale Metal Additive Manufacturing

Corrosion Performance of N10675 Alloy Welds Prepared by Different Welding Methods

SP0472-2010-SG (Chinese), Methods and Controls to Prevent In-Service Environmental Cracking of Carbon Steel Weldments in Corrosive Petroleum Refining Environments

Association for Materials Protection and Performance