Förfaringssätt vid laserskärning av metalliska arbetsstycken

摘要

In laser cutting of metallic workpieces, for avoiding burr and slag formation in the kerf, providing good weldability and high cutting speed in the workpiece, use is made of a cutting gas which comprises at least one active gas, such as for example, oxygen. The cutting gas is mixed with at least one substantially inert gas, such as for example, He, N2, Ar, of CO2, a gas or gas mixture which has but slight reactive tendencies with the material in the workpiece, the oxygen concentration lying in the range of about 30% to about 90% of the total cutting gas content.