As the usage rate of CNC plasma cutting machine becomes more and more common, its quality is also getting higher and higher. Because of its characteristics and advantages, it is widely used by everyone. What are the cutting methods?

CNC plasma cutting machine has the characteristics of fast cutting speed and small cutting seam in the cutting process. Various problems will occur in the actual operation process, resulting in limited actual cutting speed, excessive cutting seam, uneven cutting surface and other phenomena. Due to the mechanical failure of the cutting machine itself, firstly, increasing the cutting current can increase the power of the plasma arc, but it is limited by the maximum allowable current, otherwise the plasma arc column will become thicker, the slit width will increase, and the electrode life will decrease. The retraction of the electrode refers to the distance from the electrode to the end face of the cutting nozzle. A suitable distance can make the arc well compressed in the cutting nozzle and obtain a plasma arc with concentrated energy and high temperature for effective cutting. If the distance is too large or too small, the electrode will be seriously burned, the cutting tip will be burned out and the cutting ability will be reduced. The amount of shrinkage is generally 8-11mm. The plasma cutting power supply must have a high enough no-load voltage to easily start the arc and make the plasma arc burn stably. The no-load voltage is generally 120-600V, and the arc column voltage is generally half of the no-load voltage. Increasing the arc column voltage can significantly increase the power of the plasma arc, thereby increasing the cutting speed and cutting metal sheets with larger thicknesses. The arc column voltage is often not reached by adjusting the gas flow and increasing the retraction of the electrode, but the arc column voltage cannot exceed 65% of the no-load voltage, otherwise the plasma arc will be unstable.

The above is about the correct cutting method of CNC plasma cutting machine. You can choose the appropriate method according to the actual operation requirements to avoid unnecessary losses caused by blind operation. If you have other questions, you can pay attention to our website. We will update the website regularly. The article, I hope to help everyone.