How to deal with common problems in laser cutting machine processing

by:Caodahai     2021-08-29
Laser cutting machines are widely used in the processing field. But sometimes you will encounter some problems during the processing. Let's introduce to you some ways to deal with common problems in the processing of laser cutting machines. Hope it can be helpful to everyone's production activities. Generally speaking, the main problems encountered by laser cutting machines in the processing process are as follows:   1. The working principle of the laser beam during laser cutting processing. During laser cutting processing, the material forms a concave in the center after continuous laser irradiation. The pit is then quickly removed by the working gas stream coaxial with the laser beam to form a hole. This hole is similar to the threading hole of wire cutting. The laser beam uses this hole as the starting point for processing to perform contour cutting. Normally, the flying direction of the laser beam is perpendicular to the tangent direction of the cut contour of the processed part. 2. When laser cutting stainless steel and aluminum-zinc plate, the workpiece has burrs. Analysis of the above situations, first consider the factors of burrs when cutting low-carbon steel, but you cannot simply increase the cutting speed, because increasing the speed sometimes steel cutting During processing, the sheet will not be cut through. This situation is particularly prominent when processing aluminum-zinc sheets. At this time, other factors of the machine tool should be taken into consideration to solve the problem, such as whether the nozzle should be replaced or the guide rail movement is unstable. After analyzing and analyzing the state of laser incomplete cutting, it can be found that the following situations are the main reasons for processing instability: the choice of laser head nozzle does not match the processing thickness; the laser cutting line speed is too fast, and the operation control is reduced. Linear speed; In addition, special attention should be paid to the need to replace the 7.5u0026Prime; focal length laser lens when the laser cutting machine cuts carbon steel plates above 5mm. 3. The analysis of the laser incomplete cutting through state can analyze the following main situations: the choice of the laser head nozzle does not match the processing thickness; the laser cutting line speed is too fast, and the operation control is required to reduce the line speed; in addition, it is also required Special attention should be paid to the need to replace the 7.5u0026Prime; focal length laser lens when the L3030 laser cutting machine cuts carbon steel plates above 5mm. 4. The reason for the deformation of the small holes in laser cutting is that the machine tool (high-power laser cutting) does not adopt the method of blasting and perforation when processing the small holes, but uses the method of pulse perforation (soft puncture), which makes the laser energy in one A small area is too concentrated, and the non-processed area is also scorched, causing deformation of the hole and affecting the processing quality. At this time, we should change the pulse perforation (soft puncture) method to the blast perforation (ordinary puncture) method in the processing program to solve it. For laser cutting with lower power, the opposite is true. Pulse perforation should be used to obtain a better surface finish when processing small holes. Therefore, when using laser cutting, different perforation methods should be selected according to different powers.  5. The solution to abnormal sparks when laser cutting mild steel.    This situation will affect the quality of the cut section finish. At this time, when other parameters are normal, the following conditions should be considered: the loss of the laser head nozzle NOZZEL, the nozzle should be replaced in time. In the case of no replacement of a new nozzle, the cutting working gas pressure should be increased; the thread at the connection between the nozzle and the laser head is loose. At this time, the cutting should be suspended immediately, the connection status of the laser head should be checked, and the thread should be re-installed. 6. Is it harmful to the body during laser cutting? Laser cutting uses a laser transmitter to generate extreme heat to melt the metal material to achieve laser cutting. The so-called radiation. If there is light, there must be radiation, but it is The energy of the radiation can be strong or weak. According to the wave-particle duality of light, there is radiation, but compared with the radiation emitted by flame burning, the intensity of the energy radiation is similar. There is no great harm to the human body. do not worry.   Wuhan Gaoneng Laser Equipment Manufacturing Co., Ltd. is a high-tech enterprise integrating Ru0026D, production and sales of professional laser complete sets of equipment. Not only successfully developed laser equipment with advanced technology, but also used self-support import and export rights to promote products to more than 40 global markets including Hong Kong, South Korea, Vietnam, Malaysia, Thailand, Australia, the United States, Japan, Germany, the Netherlands, Jordan, etc. nation.
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