Granular flux for pipe welding
AssigneeThe Lincoln Electric Company
InventorsDennis D. Crockett, Robert J. Weaver
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Abstract
An agglomerated welding flux especially designed to produce tandem arc seam welds having low profiles, increased penetration, and minimal undercutting. The flux includes: aluminum oxide and silicon dioxides in the form of kyanite; magnesium oxide; and, manganese oxide.
Claims2
An agglomerated flux composition suitable for use in arc welding when deposited as a layer in the form of granular free flowing particles consisting of the following ingredients in approximately the indicated weight percentages:
- ______________________________________ MgO 5-20 Mn.sub.x O.sub.y 4-16 TiO.sub.2 0-8 Alloys 0-10 Fluorides 1-8 ZrSiO.sub.4 0-15 SiO.sub.2 0-15 Al.sub.2 O.sub.3 0-20 Al.sub.2 O.sub.3.SiO.sub.2 20-70 Na.sub.2 O.SiO.sub.2 3-9 ______________________________________
- the improvements which comprise the Al.sub.2 O.sub.3.sup.. SiO.sub.2 being in the form of kyanite and the Na.sub.2 O.sup.. SiO.sub.2 binding the other ingredients into agglomerated granular free flowing particles.
An agglomerated flux composition suitable for use in arc welding when deposited as a layer in the form of granular free flowing particles consisting of the following ingredients in approximately the indicated weight percentages:
- ______________________________________ MgO 11.0 Mn.sub.x O.sub.y 9.9 TiO.sub.2 3.5 Alloys 5.0 CaF.sub.2 6.0 ZrSiO.sub.4 8.0 Al.sub.2 O.sub.3.SiO.sub.2 45.6 SiO.sub.2 1.5 Present as Al.sub.2 O.sub.3 2.0 impurities in Fe.sub.2 O.sub.3 1.5 the raw materials Na.sub.2 O.SiO.sub.2 6.0 100.0 ______________________________________
- the improvements which comprise the Al.sub.2 O.sub.3.sup.. SiO.sub.2 being in the form of kyanite and the Na.sub.2 O.sup.. SiO.sub.2 binding the other ingredients into agglomerated granular free flowing particles.
Dependencies are inferred from the claim text.