Metal cutting is a necessary process for most metal processing. For example, in the processing of sheet metal, we need to cut the steel plate into the approximate shape we need, and then finish machining to make the required parts. NC flame / plasma cutting uses a digital motion control system to control the machining axis of the machine tool by writing processing programs or importing processing files or graphics in the system, combined with stepping or servo motor drivers to drive stepping or servo motors, It can realize the processing technology of flame / plasma cutting, and cut out the required metal shape through combustible gas or plasma arc.
NC plasma arc cutting is a machining method of numerically controlled machine tools using the heat of high-temperature plasma arc to melt (and evaporate) the metal parts at the cut of the workpiece, and remove the molten metal by the momentum of high-speed plasma to form the cut.
1. Wide cutting area, can cut all metal plates;
2. Fast cutting speed and high efficiency, cutting speed can reach more than 10m / min;
3. The cutting accuracy is higher than that of flame cutting. There is no deformation in underwater cutting, and the precision of fine plasma cutting is higher.
1. It is difficult to cut steel plates over 20mm, which requires a high-power plasma power source, and the cost is high.
2. When cutting thick plates, the cut is V-shaped.
Plasma cutting under water can eliminate the noise generated during cutting, pollution by dust, harmful gases and arc light, and effectively improve the working environment. The use of fine plasma cutting has made the cutting quality close to the level of laser cutting. At present, with the maturity of high-power plasma cutting technology, the cutting thickness has exceeded 150mm, which has broadened the cutting range of CNC plasma cutting machines.
Status and prospects
With the rapid development of China's economy, the CNC machining industry has also made great strides forward. It is an inevitable trend that CNC machining replaces manual and traditional semi-automatic machine tools.
China's numerical control processing industry started late, and is mainly concentrated in industrially developed cities or coastal areas such as the Pearl River Delta and the Yangtze River Delta. Therefore, at present, there are still many companies in China still using manual or semi-automatic machine tools for metal cutting. The traditional cutting method not only has low production efficiency, but also the quality and precision of the cutting is relatively poor, and at the same time, it will cause great waste when cutting. For the company itself, processing efficiency, quality and material savings are definitely the most important parts. And the use of CNC cutting machines can make these processing enterprises in these aspects a huge improvement compared to the traditional, resulting in huge economic benefits. Therefore, CNC cutting will be used in more and more processing enterprises, and eventually replace traditional processing.