A Kind of Underwater Wet Arc Cutting with Flux Cored Cutting Wire

Abstract

The invention discloses a chemical core cutting wire for underwater wet method electric arc cutting. The chemical core cutting wire is composed of external metal skin and a powdery chemical core. The external metal skin is a pure aluminum belt. The inner chemical core comprises, by mass, 40%-60% of aluminum thermit and magnesium thermit, 10%-35% of marble,5%-10% of potassium carbonate, 1%-2% of a rare earth element, 0-20% of iron powder, 0-10% of nickel powder, 0-15% of potassium chlorate and 5%-10% of hydroxymethyl cellulose. According to the chemical core cutting wire, under the action of electric arc heat and the heating function of exothermic components added to the chemical core, extra oxygen supply and gas protection are not needed, an underwater metal structure can be cut, and the chemical core cutting wire has the advantages of being easy to manufacture, low in cost and high in cutting speed.

Description

technical field [0001] The invention belongs to the technical field of welding and cutting materials for metal materials, and relates to a drug-cored wire for underwater wet arc cutting, in particular to a self-protected semi-automatic underwater arc cutting with a drug-cored wire that does not require additional oxygen supply. Background technique [0002] As the country further accelerates the development of marine resources, ship repair technology, underwater oil production drilling platform construction, submarine oil pipeline laying and other marine steel structure projects urgently need the development of underwater wet welding and cutting materials. Although my country has made great progress in underwater welding and cutting materials in recent years, the leading position of Western countries is still obvious. Therefore, we must make greater efforts to develop underwater welding and cutting materials. At present, in the underwater thermal cutting technology, the most...

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Problems solved by technology

However, the cutting edge of this kind of cutting wire is difficult to remove slag, and the oxidation effect does not work on stainless steel, so it can only cut carbon steel and low alloy steel, which limits the practical application of this type of cutting wire. In addition, the low cost of making the cutting wire The cost of carbon steel strips is relatively high, and other metal skins can be considered instead

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