The reason and solution of metal Edge Burning by fiber laser cutting machine

Laser cutting machine in the processing of sheet metal will appear burning edge and slag, not only affect the accuracy and beauty of the product, but also reduce the product quality, to bring great economic losses to enterprises.So how can we effectively avoid and deal with this problem? Technical personnel to give you a universal solution metal laser cutting machine processing knowledge.

Analysis on the causes of burning edge of metal laser cutting machine,Metal laser cutting machine in the processing of metal sheet metal will produce a lot of heat, under normal circumstances, the cutting of the heat will spread along the cutting seam into the processed sheet metal to be fully cooled. Metal laser cutting machine in the processing of small holes, the outside of the hole can be fully cooled, the small hole in the inner part of the hole is because the heat can diffuse small space, heat energy too concentrated to cause the burning, hanging slag and so on. In addition, in the thick plate cutting, the amount of molten metal deposited on the surface of the material and the accumulation of heat can cause the auxiliary airflow to be disturbed and the heat input too much, thus causing the burning.

Solution

1. Metal laser cutting machine in the carbon steel small hole in the cutting process of the solution: in the oxygen-assisted carbon steel cutting, the key to solve the problem is how to inhibit the production of oxidation reaction heat. Can be used in the perforation of auxiliary oxygen, hysteresis switch to auxiliary air or nitrogen to cut the method. This method can be used to process a small hole of 1/6 thick plate.The pulse cutting condition with low frequency and high peak output power can reduce the heat output and help to optimize the cutting condition. set condition into a single pulse laser beam.high peak value output of energy intensity, low frequency condition, which can effectively reduce the deposition of molten metal on the material surface during perforation, and effectively restrain the heat output.

2. Metal laser cutting machine in the aluminum alloy and stainless steel cutting solution: In this kind of material processing, the use of auxiliary gas is nitrogen, in the cutting is not a burning edge.however, due to the small hole inside the material temperature is very high, the inside of the slag phenomenon will be more frequent.The effective solution is to increase the pressure of auxiliary gas, set the condition to peak value output, low frequency pulse condition.Auxiliary gas use of air is also the same as the use of nitrogen, it is not burned, but it is easy to appear at the bottom of the slag, need to set the conditions for high auxiliary gas pressure, high peak output, low frequency

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Eason

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