Low hydrogen basic metal cored electrode
AssigneeThe Lincoln Electric Company
InventorsChang-Shung Chai, David A. Fink, John Gonzalez
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Abstract
A consumable welding element for arc welding comprising a steel sheath surrounding a compacted core containing metal alloying powders and an essentially 100% basic compound in an amount less than about 1.60% of the total weight of said element. The basic compound is calcium fluoride powder which is preferably in the range of about 0.1% to about 0.9% calcium fluoride powder by total weight of the element. As another feature the core of the element contains a specific agent for decreasing the amount of diffusible hydrogen in the weld metal. This new element may be a filler metal for TIG welding; however, it is preferably a consumable electrode for MIG welding.
Claims8
A consumable welding element for arc welding comprising a steel sheath surrounding a compacted core containing an essentially single ingredient flux system formed from powdered calcium fluoride to provide fluxing for said welding element and making up less than 1.60% by total weight of said element, said core having up to about 0.4% of an agent for reducing the amount of diffusible hydrogen in the weld metal, said agent comprising a polymer containing fluorine.
Dependencies are inferred from the claim text.