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Plasma cutting is the use of high-temperature air currents sprayed at the nozzle to ionize and form electrical conductors. When the current passes, the gas forms a high-temperature plasma arc, and the heat of the arc partially melts (and vaporizes) the metal at the notch of the workpiece and removes the molten metal by the power of the high-speed plasma gas stream to form a notch. The elongated and stable plasma arc formed using the annular air flow technology ensures that any conductive metal can be cut smoothly and economically. A plasma generator, a torch, can be manually cut. However, the hand-held cutting efficiency is low, the cutting accuracy is poor, the cutting quality is poor, and the cutting of complex graphics is often cumbersome or ineffective. In order to meet the needs of faster, higher-quality mass-production cuts, CNC plasma cutting equipment came into being. It is an inevitable requirement of modern industrial production. CNC plasma cutting provides an automated digital control platform for plasma cutting machines. Combine the easy-to-use CNC system and machine tool platform to realize the automation of plasma cutting to meet the high efficiency and batch processing requirements of modern industrial production. The CNC plasma cutting machine is divided into working modes: dry plasma, semi-dry plasma, and underwater plasma. The cutting quality is divided into ordinary plasma, fine plasma, and laser-like plasma.
The main application fields of CNC plasma cutting machine are: stainless steel, cast iron, copper, aluminum and other non-ferrous metal plates, etc., which are mainly used for cutting irregular patterns on the plane. Theoretically, it can be cut as long as the drawing can be drawn with AUTOCAD (the radius is smaller than 2 times the width of the plasma kerf cannot be cut.) A complete CNC plasma cutting machine is mainly composed of plasma generator, numerical control system, machine tool and air supply device (air compressor). The plasma generator and its cutting torch group directly determine the cutting quality. The numerical control system and the machine tool directly determine the cutting accuracy. The gas supply device directly affects the cutting quality and is also a necessary condition for the plasma generator to work.
CNC plasma cutting machines are improved in cutting speed and cutting range compared with flame cutting. In addition to the maturity of plasma cutting technology in recent years, more and more users choose plasma cutting methods on the market, compared to traditional cutting. In terms of mode, plasma cutting has the advantages of high efficiency, high precision, and high stability. It is particularly suitable for high-volume production and high-precision cutting requirements. In addition, from the cost point of view, due to the elimination of cutting gas costs, the relative cost of plasma cutting More economical, especially when applied to large-scale processing and production, the processing cost control will be more obvious. Plasma cutting under water can eliminate the noise generated during cutting, dust, harmful gas and arc pollution, and effectively improve the workplace environment. The use of fine plasma cutting has made the cutting quality close to the level of laser cutting. With the maturity of high-power plasma cutting technology, the cutting thickness has exceeded 15mm, and the cutting range of numerical control plasma cutting machines has been broadened. Its advantages are: wide cutting area, can cut all metal plates; cutting speed, high efficiency, cutting speed of up to 10m/min or more; cutting accuracy is higher than the flame cutting, underwater deformation without distortion, precision plasma cutting is more accurate . The disadvantage is that it is more difficult to cut a steel plate with a diameter of 20 mm or more, a plasma power source with a large power is required, and the cost is high. When cutting thick plates, cut into V.
Editing: kunshanwl