Enclosed Type

How to avoid the laser cutting machine cutting seam intergranular microcracks on the surface

by：Transon 2020-11-01

Modern laser cutting machine system can cut carbon steel plate thickness up to 20 mm, using melt oxidation of cutting mechanism of cutting carbon steel, cutting seam width can be controlled in a satisfactory range of the kerf width can be narrow plate to 0. About 1 mm. Metal laser cutting machine for manufacturing stainless steel sheet is used as the main component is a effective machining tools. In the strict control of the heat input in the process of laser cutting measures, can restrict the trimming heat affected zone is small, thus effectively maintain the good corrosion resistance of this kind of material. Almost all of the metal material has a high reflectivity of infrared wave energy at room temperature, but the launch 10 in the far infrared band. 6 um beam CO2 laser is successfully applied in many metal laser cutting practice. Metal to 10. The start of the 6 um laser beam absorption rate is only 0. 5% ~ 10%, however, when the power density of more than 106 w/cm2 focused laser beam to the metal surface, but to make the surface in the microsecond time soon began to melt. In most of the molten metal absorption rate has risen sharply, generally can be increased by 60% ~ 80%. Aluminum cutting belong to melt cutting mechanism, the auxiliary gas is mainly used to blow away the molten product from the cutting area, laser cutting machine usually can obtain better quality aspects. For some aluminum alloy, attention should be paid to prevent cutting seam surface intergranular micro cracks.

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