Metal laser cutting machine can processing materials, although almost all of the metal material has a high reflectivity of infrared wave energy at room temperature, but a launch far-infrared band 10.6 um beams CO2 laser is successfully applied in the practice of many metal laser cutting.Metal to 10.6 um absorption rate is only 0.5% ~ 10%, and the beginning of the laser beam, 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%.
1, carbon steel
Modern laser cutting system can cut carbon steel plate thickness up to 20 MM, use of oxidation melting cutting mechanism of cutting carbon steel cutting seam width can be controlled in a satisfactory range, to narrow sheet the kerf width can be 0.1 MM or so.
2, stainless steel
Laser cutting of stainless steel sheet is used as the main component is a effective machining tools manufacturing.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.
3, alloy steel
Most of the alloy structural steel and alloy tool steel can use laser cutting method for good trimming quality.Even some high strength material, as long as the process parameters are controlled properly, the flat, non sticky residue trimming can be obtained.However, for high speed tool steels containing tungsten and hot die steel, laser cutting with corrosion and viscous slag phenomenon.
4, aluminum and alloy
Aluminum cutting belong to melt cutting mechanism, the auxiliary gas is mainly used to blow away the molten product from the cutting area, usually can obtain better quality aspects.For some aluminum alloy, attention should be paid to prevent cutting seam surface intergranular micro cracks.
5, copper and alloy
Pure copper (copper) because of high reflectivity, basically can't use CO2 laser cutting.Use higher laser power of brass (copper), auxiliary gas with air or oxygen, the thinner plates can be cut.
6, titanium and alloy
Pure titanium can coupling focused laser beam transformation of heat energy, auxiliary gas using oxygen chemical reaction is intense, cutting speed faster, but easy to generate oxide layer in trimming, accidentally can also cause a burn.As safe, using air as auxiliary gas is better, to make sure that the cutting quality.Aircraft industry commonly used titanium alloy laser cutting quality is better, although there will be a little sticky residue at the bottom of the kerf width, but it's easy to remove.
7, nickel alloy
Nickel-based alloy is also called super alloy, many varieties.Most of them can be implemented oxidation melting cutting.
Post time: Oct-22-2019
