With the development of modern machinery processing industry, the requirements for the quality and precision of cutting have been continuously improved, and the requirements for improving production efficiency, reducing production costs, and having high-efficiency automatic cutting functions are also increasing. As a part of the cutting machine industry, the products we provide will be the most modern and technological. Welcome everyone to discuss cooperation. Details:/
CNC plasma cutting machine has the characteristics of fast cutting speed, small slitting, etc. in the cutting process, but many user companies often have various problems in the actual operation process, leading to the actual cutting speed is limited, the slotting is too large, the cutting surface The phenomenon of incomplete and other phenomena, excluding the mechanical breakdown of the CNC plasma cutting machine, etc., the user's enterprise is not properly set in operation, etc. The relevant parameters of the CNC plasma cutting machine will also affect the actual cutting effect. The following will summarize the impact of the actual use experience of CNC plasma cutting machine The various aspects of cutting effect, and the majority of users to communicate:
1. Increasing the cutting current The cutting current can also increase the power of the plasma arc, but it is limited by the maximum allowable current, otherwise it will make the plasma arc column thicker, the kerf width increased, and the electrode life decreased.
2. The no-load voltage and arc column voltage plasma cutting power supply must have a sufficiently high no-load voltage for easy arc ignition and stable plasma arc ignition. The no-load voltage is generally 120-600V, and the arc-column voltage is generally half of the no-load voltage. Increasing the voltage of the arc column can significantly increase the power of the plasma arc, which can increase the cutting speed and cut a larger thickness of sheet metal. The arc-column voltage is often not reached by adjusting the gas flow and increasing the internal shrinkage of the electrode, but the arc-column voltage cannot exceed 65% of the no-load voltage, otherwise the plasma arc will be unstable.
3. Increased gas flow rate The gas flow rate can not only increase the voltage of the arc column, but also enhance the compression of the arc column to make the plasma arc energy more concentrated and the injection force stronger, thus improving the cutting speed and quality. However, if the gas flow rate is too large, the arc column will become shorter and the loss of heat will increase, which will weaken the cutting machine until the cutting process can not be performed normally.
4. The amount of shrinkage in the electrode The so-called shrinkage is the distance from the electrode to the end surface of the cutting nozzle. A suitable distance will allow the arc to be well compressed within the cutting nozzle and obtain an energy-concentrated, high temperature plasma arc for efficient cutting. If the distance is too large or too small, the electrode may be severely burned, the cutting nozzle burned, and the cutting ability may be reduced. The inner shrinkage generally takes 8-11mm.
5. Cutting nozzle height Cutting nozzle height refers to the distance from the cutting nozzle face to the surface of the workpiece being cut. The distance is generally 4~10mm. It is the same as the internal shrinkage of the electrode, and the distance must be appropriate in order to make full use of the cutting efficiency of the plasma arc, otherwise the cutting efficiency and the cutting quality will be reduced or the cutting nozzle will be burned.
6. Various factors above the cutting speed directly affect the compression effect of the plasma arc, that is, the temperature and energy density of the plasma arc, and the high temperature and high energy of the plasma arc determine the cutting speed. Therefore, all the above factors are related to the cutting speed. related. In the premise of guaranteeing the cutting quality, the cutting speed should be increased as much as possible. This not only increases productivity but also reduces the amount of deformation of the cut parts and the heat affected zone of the kerf area. If the cutting speed is not appropriate, the effect is reversed, and the sticky slag will increase, and the cutting quality will decrease.
It is hoped that the above summary can help the relevant user companies to adjust the use of the equipment in the actual use process in order to achieve the best cutting results.
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