Spiral-flow cooled high-power plasma cutting torch

The utility model relates to a rotational flow cooled plasma cutting torch with composite cathode structure. The utility model is characterized in that a cathode forms a bell shape, and cooling water forms rotational flow around the cathode. The lower end of a central tube is made into a return line...

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Bibliographic Details
Main Authors GUO WENKANG, MAO XINQIAO
Format Patent
LanguageEnglish
Published 18.05.1994
Edition5
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:The utility model relates to a rotational flow cooled plasma cutting torch with composite cathode structure. The utility model is characterized in that a cathode forms a bell shape, and cooling water forms rotational flow around the cathode. The lower end of a central tube is made into a return line forming a multiple thread shape, and the inner wall of a lower insulating ring is also made into a return line forming a multiple thread shape. Due to the novel composite cathode structure of the utility model, the cathode can not deform, the cooling condition of the cathode is improved, thus the service of the cutting torch is prolonged, and the loading capacity of the cutting torch is enhanced. The air plasma cutting torch of the utility model has a working voltage between 300V and 350V, arc current can reach to 1000 A, and a steel plate with the thickness of 200 mm can be cut.
Bibliography:Application Number: CN1993221734U