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Cutting gas nozzle and laser cutting method having a displaceable sleeve for setting the flow characteristics
Cutting gas nozzle and laser cutting method having a displaceable sleeve for setting the flow characteristics
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机译:具有用于设定流量特性的可移动套筒的切割气体喷嘴和激光切割方法
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摘要
This disclosure describes laser machining head cutting gas nozzles that include an inner nozzle having a nozzle opening configured to form a core gas flow, an outer nozzle having an annular gap surrounding the nozzle opening and configured to form an annular gas flow, and a sleeve in the annular gap, wherein the sleeve is arranged to be axially displaceable between a rearward position and a forward position, wherein the sleeve projects beyond the inner nozzle at least when in the forward position, and wherein the sleeve widens a cross-sectional area of the outer nozzle to a variable degree as the sleeve is displaced from the rearward to the forward position. Methods of using a cutting gas nozzle are also described.
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