Back to results
US 4,790,887 AGranted
Additive for use in underwater arc-welding
AssigneeOy Gss General Sea Safety Ltd.
InventorEnsi K. J. Niinivaara
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeOy Gss General Sea Safety Ltd.
InventorEnsi K. J. Niinivaara
Estimating the term…
A pastelike additive used in the underwater arc welding to protect the weld and/or welding rod against the harmful effects of water. The additive contains the base material advantageously mixed with oily carrier liquid and comprising at least 10 percentages of weight one base material, advantageously a biomass with plenty of organic compounds, and possibly termitic agent, regulating agent for the pH-value of the additive, lighting agent, hydrogen removal agent and an agent to enhance the sufficiency. The additive according to the invention is characterized in that the ashless dry material of the biomass in the base material contains: 1 . . . 40, advantageously 10 . . . 13, percentages of weight amino acids; 0,5 . . . 10, advantageously 1,5 . . . 2,5, percentages of weight fatty acids; 50 . . . 98, advantageously 83 . . . 87, percentages of weight carbohydrates, preferably carbon compounds with large molecular sizes; and about 0,5 percentages of weight mineral substances and/or trace elements.
A paste-like additive for use in arc welding including at least 10 percent by weight of a base material comprising a biomass, said biomass consisting essentially of, in weight percent on an ashless dry basis, 1 to 40 percent amino acids;
Dependencies are inferred from the claim text.