Process gas and laser machining method

Details Process gas and laser machining method Process gas and laser machining method

2005-01-25

2005-01-25

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

By arc

C216S065000, C252S372000, C252S374000

Reexamination Certificate

active

06847007

ABSTRACT:
A process gas and a process of laser machining, such as laser beam fusion cutting or laser beam welding is provided. A gas mixture that contains at least oxygen and hydrogen, in addition to an inert has, is used as the process gas. The ratio of oxygen to hydrogen in the process gas is hypostoichiometric with respect to the reaction 2 H2+O2+→2 H2O, which causes the process gas to exhibit a reductive effect.

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patent: 6071796 (2000-06-01), Voutsas
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patent: 0 990 480 (2000-04-01), None
patent: 1 022 087 (2000-07-01), None
patent: WO 02051579 (2002-07-01), None

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