Common problems about laser cutting machines and the causes of burrs

When the laser cutting machine is processing, it is necessary to use maintenance gas. Air is of course a simple and economical maintenance gas. The function of the air compressor is to compress a part of the air with high-purity oxygen and high-purity nitrogen to provide cutting gas. For the cutting head, one part is used as the power source to supply the cylinder of the clamping worktable, and the other part is used to stop the purge and dust removal of the light path system. The compressed air discharged from the air passes through the air storage tank and the dryer and enters the air control cabinet. After passing through a sophisticated disposal system, it becomes clean and dry gas, which will finally be divided into three channels, which are respectively used as cutting gas, cylinder power gas source and light path positive pressure dust removal gas to maintain the normal operation of the laser cutting machine, so the air compressor is Every laser cutting equipment is indispensable, and it is also very important for laser cutting machines.

The air is directly provided by the air compressor, so the price is very cheap compared with other gases. Although the air contains about 20% oxygen, the cutting efficiency is far less than that of oxygen, and cutting can be similar to nitrogen. The cut surface will show a small amount of oxide film, but it can be used as a measure to prevent the coating film from falling off. The end face of the incision is yellowed.

The main applicable materials are aluminum, aluminum alloy, stainless copper, brass, electroplated steel plate, etc.

Some factors that affect the life of the laser cutting machine. Regarding the laser cutting machine, it is the pump source and crystal inside that affect the life of the laser cutting machine, which is actually the life of the lamp. Generally speaking, the life span of the standard lamp is equal to the life span of the crystal. When the energy drops, the processing performance of the laser cutting machine will be greatly reduced, so the only way to deal with it is to change the pump source and crystal.

When the laser cutting machine stops cutting the data, a large amount of gas and splashes will be released from the work surface. These gas and splashes will damage the lens. When contaminants fall on the surface of the lens, it will absorb energy from the laser beam, causing a thermal lens effect. If the lens has not yet constituted thermal stress, the operator can remove it and clean it.

The power of the laser cutting machine drops suddenly, and the glass tube may break. There are watermarks on the wall of the broken glass tube. The power of the air conditioner and the air dryer can be increased to reduce the air humidity; high temperature with high humidity may also cause the glass to break. There is no dirt and residual traces left on the surface of the mirror; blow dry with dry air; if necessary, roll the lens paper moistened with a few drops of acetone into a rod, and quietly scrub the surface of the lens to remove heavy drops of dirt.

Many customers start to put the metal laser cutting machine into operation after the assembly is completed, and the burrs are very obvious in the application. Why?

1. First check whether there is a problem with the laser output, and whether the light spot is very round (the circle indicates that the lateral dispersion of the laser energy is even, after passing through the lens The energy distribution of the formed light spots is also more even. The cutting quality is better)

2. Check whether the lens in the laser transmission process is dirty, or whether the lens has Dirty, whether the lens has small cracks that are not easy to find with the naked eye, these will affect the transmission of laser power.

After checking the above two points, we can confirm whether the laser itself is good, and then adjust the process parameters. The burrs produced by the tube laser cutting machine cutting stainless steel have certain hardness and are difficult to remove. It has to be time-consuming, and it also affects the aesthetics of the workpiece. It is best to deal with it from the source. The purity of the gas should be high. If you can change to a better quality gas supplier, the purity of the gas is very important. It is best not to use steel cylinder gas, because after two fillings, the purity is not good, and the gas is wasted. The next step is to adjust the cutting parameters to the best. The air pressure, flow, focal length and cutting speed must be adjusted many times. The parameters provided by the machine cannot cut delicate workpieces. Equipment + gas + parameters, adjusted to the best, the cut workpiece is free of burrs.

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