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Prevention of Weld Metal Hydrogen Cracking in High-Strength Multipass Welds

Welding modern high-strength steel with low carbon and impurity contents, preheat may be dictated by cracking sensitivity of the weld metal instead of the HAZ. Standard EN 1011 does not provide the ... read more

Evaluating risk of hydrogen embrittlement: new simulation of cold cracks in high-strength steels

which can lead to crack formation in the welded component. Alongside the hydrogen which is introduced during the welding process, previously existing hydrogen in the steel is loosened up by the ... read more

Economic avoidance of weld metal hydrogen cracking when welding modern C-Mn steel

During the last decade or so considerable financial investment in steel processing and production has been aimed at reducing the risk of hydrogen cracking in the heat affected zone (HAZ) of weld and ... read more

Study on Hydrogen-Assisted Cracking in High-Strength Steels by Using the Granjon Implant Test

In present research work, the modified Granjon implant test was performed to evaluate the susceptibility of AISI 8620 and AISI 304 steels toward the hydrogen-assisted cracking ... Shielded metal arc ... read more

EXPERTS EXPLAIN CAUSES OF CRACKS IN WELDING

The high carbon content in the welding rods apparently led to overly rapid cooling, and that produced cracks. One expert said that sounds like "hydrogen-cracking" or "cold-cracking," a problem that ... read more

10 Tips That Can Advance Your Welding Skills

“Preheating is required to prevent postweld cracking.” Employ a small-diameter, low-hydrogen electrode, such as a 7018 stick rod, when repairing high-strength steels, adds Leisner. Finally, keep your ... read more

Bay Bridge tower welds flawed, need repairs

"If you get moisture introduced into a crack, you will get hydrogen cracking in any weld," Wright said. Hydrogen contamination is considered a likely cause for 32 bolts breaking in March on seismic ... read more

Evaluation of Hydrogen Cracking in Weld Metal Deposited Using Cellulosic SMAW Electrodes

In a previous study of the limitations of cellulosic coated electrodes, it was found that arc length has a pronounced effect on carbon, manganese, and silicon recovery in welds made using these ... read more

TAINTED WIRE IS BLAMED FOR CRACKS IN SUB

The second major factor, Eagar's report said, was the high carbon content of the wire. The cracking was induced by the presence of hydrogen in the welds, according to the report, which pinpointed the ... read more
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