数控切割机的方式分冷切割和热切割，今天给大家介绍的数控切割的热切割在哪些从方式上来说主要包括数控火焰切割、数控等离子切割和数控激光切割三种。总体来说他们各有特点。
数控火焰切割机：火焰切割由于气压、割嘴高度、以及预热时间等因素影响，整体切割材料变形尺寸较大，适应不了高精度切割的需要，而且切割速度较低，同时由于切割前需预热，花费时间，难以适应无人化操作的需要。
数控等离子切割机：等离子切割具有切割速度快，范围宽等特点，适合切割低厚度金属板材及各种非金属材料，最高切割速度可达10m/min，是火焰切割的5倍。在水下切割能消除切割时产生的噪声，粉尘、有害气体和弧光，有利于环保要求。
数控激光切割机：精度高；速度快；热影响区小，不易变形。切缝平整、美观，无需后序处理。
总的来说，数控火焰切割、数控等离子切割技术是集数控技术，计算机软、硬件技术，等离子切割技术，精密机械技术于一体的高新技术。发展数控切割可以彻底改变国内热切割行业的装备水平，扭转热切割工业目前存在的效率，质量差，劳动强度大，材料利用率低，环境脏乱差的局面，缩小与国外先进国家的差距。同时，数控切割技术的发展可带动相关领域和学科达到国际先进水平，带动国家工业迅速发展。（图/文http://www.51hjsb.com）
CNC flame cutting machine: flame cutting because of pressure, nozzle height, and the preheating time and other factors, the overall cutting material deformation of large size, can not meet the need of high precision cutting, and the cutting speed is low, at the same time as the cutting in front of preheating, time-consuming, difficult to adapt to the need of unmanned operation.
CNC plasma cutting machine: plasma cutting with cutting speed, wide range of features, suitable for cutting of low thickness of sheet metal and nonmetal materials, the maximum cutting speed can reach 10m / min, flame cutting 5 times. Under water cutting can eliminate the cutting noise, dust, harmful gas and arc, is conducive to environmental protection requirements.
CNC laser cutting machine: high precision; speed; small heat affected zone, not easy to deformation. Slotted flat and beautiful, without the need for subsequent processing.