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7 Details of laser cutting on metal materials

Shenzhen MG Technology Co.,Ltd | Updated: May 27, 2016

Metal on initiation of 10.6 um laser beam absorption rate from 0.5% ~ 10% only, however, when with a power density of more than 106w/cm2 focused laser beam irradiation to the metal surface, but it can in the microsecond time soon so that the surface begins to melt. The absorption rate of most metals in the molten state has risen sharply, which is generally improved by 60%~80%.

1. Titanium and its alloys.

Pure titanium can be very good coupling focused laser beam transformation of heat energy, auxiliary gas oxygen, chemical reactions, cutting speed, but easy to produce oxide layer on the edge of the cutting edge, will cause combustion. For the sake of safety, the use of air as an auxiliary gas is better, to ensure the quality of cutting.

Aircraft manufacturing industry commonly used titanium alloy laser cutting quality is better, although there will be a little sticky residue at the bottom, but it is easy to clean up.

2. Nickel alloy.

Nickel based alloy, also known as super alloy, a lot of variety. Most of them can be carried out to melt and cut.

3. Carbon steel.

Modern laser cutting machine can cut carbon steel plate thickness up to 20mm, by oxidation melting cutting mechanism, the cutting carbon steel slit can be controlled in the satisfactory range in width and sheet the kerf narrow to 0.1mm or so.

4. Stainless steel.

Laser cutting stainless steel sheet, is an effective tool for processing. In the strict control of the laser cutting process of the heat input measures can be restricted to the edge of the heat affected zone is very small, so that it is very effective to maintain the good corrosion resistance of such materials.

5. Alloy steel.

The majority of alloy structural steel and alloy tool steel using laser cutting method to obtain good cutting quality. Even some of the high strength materials, as long as the process parameters are properly controlled, can get straight, non stick slag cutting edge. However, for high speed tool steel and hot die steel, laser cutting machine will have the phenomenon of corrosion and slag.

6. Aluminium and alloys.

Aluminum cutting is a melting laser cutting mechanism, which is mainly used to blow away the molten product from the cutting area. For some aluminum alloy, it should be noted that the prevention of micro cracks on the surface of the cutting seam.

7. Copper and alloys.

Copper (copper) because the reflectivity is too high, basically can not use CO2 laser beam cutting. Brass (Tong Hejin) using a higher laser power, auxiliary gas using air or oxygen, can be a thin sheet of cutting

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