Basic agglomerated flux with a high CaO content for the welding of ordinary or low alloy steels
AssigneeLa Soudure Electrique Autogene, Procedes Arcos
InventorRobert Jean De Haeck
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Abstract
A prefused basic flux composition comprising: ______________________________________ SiO.sub.2 about 25 to about 35% Al.sub.2 O.sub.3 about 2 to about 6% TiO.sub.2 about 3 to about 7% CaF.sub.2 about 5 to about 11.25% CaO about 44 to about 52% MgO about 1 to about 10% MnO about 0.5 to about 5% Na.sub.2 O about 4.5 to about 8% K.sub.2 O about 0.5 to about 1.5% FeO 0 to about 2% ______________________________________ And wherein the weight ratio of CaO to CaF.sub.2 is equal to or greater than about 4.
Claims8
A prefused basic flux for submerged arc welding, under both alternating and direct current, of steels of high elastic limits, consisting essentially of, in weight %:
- ______________________________________ SiO.sub.2 about 25 to about 35% Al.sub.2 O.sub.3 about 2 to about 6% TiO.sub.2 about 3 to about 7% CaF.sub.2 about 5 to about 11.25% CaO about 44 to about 52% MgO about 1 to about 10% MnO about 0.5 to about 5% Na.sub.2 O about 4.5 to about 8% K.sub.2 O about 0.5 to about 1.5% FeO 0 to about 2% ______________________________________
- wherein the weight ratio of CaO to CaF.sub.2 is equal to or greater than about 4.
Dependencies are inferred from the claim text.