Low hydrogen basic metal cored electrode

Electric heating – Metal heating – Weld rod structure

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219137WM, 21914624, B23K 3522

Patent

active

050916289

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.

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Chigarev et al., "A Fluoroplastic Material in flux-cored Strip to reduce the hydrogen content of deposited metal", Automatic Welding, 1/1985, pp. 41-43.

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