How does a good laser cutting machine work?

Many users of laser cutting machine are more interested in its related content, and everyone will pay attention to the emergence of various problems when using it. So how to make the laser cutting machine better use? I believe that many people are very interested in this issue, so let's take a look at the specific introduction together.

Under normal circumstances, a good laser cutting machine power supply can provide higher-precision cutting quality, but even if the same brand and model of plasma power supply are used, the quality of the parts cut by different operators is different. The reason is that there are areas that need to be improved in the use of the power supply of the laser cutting machine.

In addition, there have been many media reports on the radiation problem of laser cutting machine power supply recently, exaggerating the degree of harm to the environment is too serious, but the fact is that plasma cutting technology has been in the world for nearly 30 years. The impact of development and related pollution has not reached the level described by the media. The reason why domestic companies have misunderstood the use of laser cutting machine power supply, we believe that the fundamental reason lies in the standardization of the use of laser cutting machine power supply by domestic processing companies. There is a deviation. This article is edited and compiled by the Technical Department, and comprehensively explains in detail the radiation maintenance and treatment of the laser cutting machine power supply.

1. Laser cutting machine power usage process

Among the related accessories of laser cutting machine, the size and quality of plasma determine the thickness and cutting accuracy of the cut sheet. Therefore, the importance of plasma power is self-evident. With the improvement and development of related technologies, it is accompanied by CNC cutting machines. The price is steadily lowered, and the prices of imported plasma power supplies and some domestic high-end plasma power supplies are still rising, which to a certain extent reflects the pivotal position of plasma power supplies in CNC cutting processing.

1. When cutting, try to set according to the cutting table parameters, such as arc voltage value, cutting height, perforation height, etc.;

2. Ensure sufficient gas pressure and flow rate, the pressure is not less than 9 kg during normal cutting (the on-board power supply is not less than 6 kg), pay attention to the distance between the gas and the plasma host;

3. Maintain good electrical conductivity between the positive grounding clamp and the cut steel plate;

4. When plasma cutting is not used temporarily, please ensure that the host has sufficient heat dissipation before shutting down, subject to the reduction of the fan noise in the host;

5. The host opens the housing for dust removal every one and a half to two months (for example, blow it with compressed air or clean it with a high-precision electronic component cleaning agent and then blow it dry with compressed air) to ensure the smooth completion of the host's work;

6. Ensure the 3-phase electrical balance of the incoming line of the host, and avoid phase loss or excessive pressure difference;

7. When you feel that the cutting energy is insufficient (such as impenetrable steel plate, arc offset or tailing), please stop the machine immediately for inspection, and it is forbidden to continue cutting;

8. Ensure good grounding of the steel plate, and the resistance from the steel plate to the absolute ground is preferably not more than 3 ohms;

9. Try not to suspend arcing and perforation for a long time to improve the service life of wearing parts;

10. Before each cutting, during idle high-speed and low-speed operation, when shutting down for maintenance, and before shutting down, ensure that the cutting torch is maintained at the highest point of the lifting position.

Two, laser cutting machine power maintenance skills

The laser cutting machine uses the high temperature of the plasma arc column to melt the material to be cut and blow it away from the base material to form a slit. The light radiation intensity of plasma electro-optics is very high, which is mainly composed of ultraviolet radiation, visible light radiation and infrared radiation, especially the ultraviolet intensity. For example, the relative intensity of ultraviolet radiation with a wavelength of 260-290μm is 2.2 times that of argon arc welding. In addition to light radiation, there are also toxic gases such as smoke and dust, high-intensity and high-frequency noise, and high-frequency oscillators that cause harm to the human body. Therefore, the plasma cutting machine operating position is classified as a Class B toxic and harmful job. .

Plasma is a special form of matter. In modern physics, it is listed in the fourth state of matter after solid, liquid, and gaseous states. Plasma arc is a compressed arc obtained by forced 'compression' of a free arc through mechanical compression, heat shrinkage compression and magnetic shrinkage. It has concentrated energy, high temperature (arc center temperature 18000-24000K), and high flame velocity (up to 300m/s or more).

1. Unscrew the screws, remove the air filter, and prepare for cleaning;

2. Regularly monitor the grid voltage of the numerical control system to ensure that the fluctuation range of the grid voltage is within the allowable rated range;

3. Gently vibrate the removed filter, and at the same time, use compressed air to blow off the dust in the air filter from the inside to the outside;

4. Regularly check and replace DC motor brushes;

5. If the filter dust is too thick and the compressed air cannot be removed, it can be gently rinsed with a neutral detergent and placed in a cool place to dry;

6. Replace the storage battery regularly. Under normal circumstances, even if the battery has not failed, the battery should be replaced once a year to ensure that the system can work normally.

These are all related content sharing about how the laser cutting machine can be used better. Later, if you have any questions about the content of these parts, you should bring it up.

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