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目前,国内外金属板材切割的切割方式,最普遍的还是氧气切割。但是,氧气切割的速度一般只能达到0.5米/分左右,而现代的自动切割设备却可以提供高达6～7米/分的工作速度。由于氧-乙炔焰能力的限制妨碍了切割速度和生产效率的提高,各国都曾为此采取过一些措施来加以改善,如:采用多头切割、研制高速割咀、提高氧气压力、附加予热火焰等。其中除多头切割外,其它方式虽有所提高,但幅度都很有限。
At present, the cutting method of metal sheet at home and abroad, the most common or oxygen cutting. However, the oxygen cutting speed is generally only 0.5 m / min, while modern automatic cutting equipment can provide up to 6 to 7 m / min working speed. Due to the limitation of oxygen-acetylene flame retardation, the cutting speed and the improvement of production efficiency have been improved. Various countries have taken some measures to improve such as cutting with high speed, developing high-speed cutting nozzle, increasing oxygen pressure and adding heat to flame Wait. In addition to long cutting, the other ways have improved, but the magnitude is very limited.