Method for the arc cutting of metal
AssigneeOsmo Asonen
InventorJuhani Niinivaara
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Abstract
Disclosed is an improved method for arc cutting of metal, more specifically a method in which an electric arc is formed between the metal and a cutting torch and gas is blown into the cut during the cutting process. According to the invention a paste is injected through the torch into the region of the arc, said paste containing a finely-divided electrically conducting substance mixed with a carrier and acting as an electrode which causes the electric arc to be struck. The conducting substance may contain e.g. metal powder, such as powder of aluminium or of an aluminium alloy, to which also carbon and phosphorus may be added.
Claims11
In a method for arc cutting of metal, in which method an electric arc is formed between the metal and a cutting torch, and the cutting is achieved by simultaneously blowing gas into the cut;
- the improvement comprising injection of a paste through the torch into the region of the arc, said paste containing a finely-divided electrically conducting substance mixed with a carrier, so that the aforesaid finely-divided substance acts as an electrode which causes the electric arc to be struck.
Dependencies are inferred from the claim text.