Electrode and flux for arc welding stainless steel

A flux for use in arc welding of a steel workpiece with a consumable metal electrode having a percentage of chromium, said welding flux comprising a silica containing system for forming slag on the surface of the deposited chromium-bearing alloy weld metal and a bismuth containing slag releasing agent selected from the class consisting of a bismuth compound without elemental oxygen and mixtures thereof.

An electrode for use in arc welding of a stainless steel workpiece with a consumable metal electrode having at least 1.0 percent of chromium, said welding electrode having an integral flux comprising a silica containing system for forming slag on the surface of the deposited chromium-bearing alloy weld metal and a bismuth containing slag releasing agent selected from the class consisting of bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth oxy carbonate, bismuth oxy-chloride and mixtures thereof.

A flux for use in arc welding of a stainless steel workpiece with a consumable metal electrode having a percentage of chromium of over about 15% by weight of said electrode, said welding flux comprising a silica containing system for forming slag on the surface of the deposited chromium-bearing alloy weld metal and a bismuth containing slag releasing agent selected from the class consisting of bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth oxy carbonate, bismuth oxy-chloride and mixtures thereof.

An electrode for use in arc welding of a stainless steel workpiece with a consumable metal electrode having at least 15.0 percent of chromium, said welding electrode having an integral flux comprising a silica containing system for forming slag on the surface of the deposited chromium-bearing alloy weld metal and a bismuth containing slag releasing agent selected from the class consisting of elemental bismuth, bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth oxy carbonate, bismuth oxy-chloride and mixtures thereof.

An electrode for use in arc welding of a stainless steel workpiece with a consumable metal electrode having at least 15.0 percent of chromium and 0.05-0.50 percent bismuth, said welding electrode having a silica containing system for forming slag on the surface of the deposited chromium-bearing alloy weld metal, said system comprising in percentages of said electrode:

• ______________________________________ Silica (Silicates) 1.0-20% Titanium Dioxide 1.0-22% Sodium Oxide Over 0.1% Fluoride (Na or Ca) 0.05-0.5% Zirconium Dioxide Up to 2.0% or Sodium Oxide Potassium Oxide, 0.05-0.50% Potassium Fluoride or Sodium Fluoride ______________________________________

A flux for use in arc welding of a steel workpiece with a consumable metal electrode having a percentage of chromium wherein said flux and electrode have a given combined weight and said flux is at least 10% by weight of said combined weight, said weld flux comprising a silica containing system for forming slag on the surface of the deposited chromium bearing alloy weld metal, said silica system comprising at least 10% silica by weight of the flux and a bismuth containing slag releasing agent selected from the class consisting of elemental bismuth, bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth, bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth oxy carbonate, bismuth oxy-chloride and mixtures thereof.

A flux for use in arc welding of a steel workpiece with a consumable metal electrode having a percentage of chromium, said welding flux comprising a strong basic metal oxide and a silica containing system for forming slag on the surface of the deposited chromium-bearing alloy weld metal and a bismuth containing slag releasing agent selected from the class consisting of elemental bismuth, bismuth fluoride, bismuth sulfide, bismuth titanate, bismuth oxy carbonate, bismuth oxy-chloride and mixtures thereof.