Comparison between the most popular CNC flame cutt

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Comparison between NC flame cutting and plasma cutting

metal cutting is a necessary process for most metal processing. For example, when processing plates, we need to cut the steel plates into the approximate shape we need, and then finish machining to make the required parts. Numerical control flame/plasma cutting uses digital motion control system to control the machining axis of the machine tool by writing machining program or transferring machining files or graphics in the system, combined with stepper or servo motor driver to drive stepper or servo motor. It can realize the machining process of flame/plasma cutting, and cut the required metal shape through combustible gas or plasma arc. Wuhan naiba Numerical Control Technology Co., Ltd. specializes in the production and research and development of numerical control cutting machines. The following is a summary of the advantages and disadvantages of numerical control flame cutting and numerical control plasma cutting:

numerical control flame cutting: numerical control flame cutting is a kind of cutting method that numerical control machine tools use gas with oxygen or gasoline with oxygen to cut metal materials


1 It can cut very thick carbon steel, and its cutting range is very wide. It can cut 6mm-200mm thick steel plates

2. The price of flame cutting machine is relatively low, and the initial investment cost is also low


1 The preheating and perforation time required for cutting is long, and the cutting speed is slow

2. The thermal deformation during cutting is large, especially when cutting ( thin plates, the cutting accuracy is not high

3. It is impossible to cut copper, aluminum and other non-ferrous metals and stainless steel

4. Great changes have taken place in the production and utilization of polyurethane waterproof coatings in China. The way of burning fuel causes serious environmental pollution and is not environmental friendly

although NC flame cutting thin plate ( has been gradually replaced by plasma cutting in the cutting field, NC flame cutting is still in the position of light lifting and unrepeatable tensile test in cutting thick and medium plates, and flame cutting has always occupied a certain market share in thin plate cutting with its price advantage

numerical control plasma cutting: numerical control plasma arc cutting is a processing method in which numerical control machine tools use the heat of high-temperature plasma arc to melt (and evaporate) the metal part at the workpiece notch, and use the momentum of high-speed plasma to remove the molten metal to form the notch


1 Wide cutting field, can cut all metal plates

2. The cutting speed is fast and efficient, and the cutting speed can reach more than 10m/min

3. The cutting accuracy is higher than that of flame cutting, underwater cutting has no deformation, and fine plasma cutting has higher accuracy


1 Cutting steel plates above 20mm is difficult, requiring high-power plasma power supply and high cost, Xiao Yaqing said

2. When cutting thick plates, the cutting opening is V-shaped

plasma underwater cutting can eliminate the noise, dust, harmful gas and arc pollution generated during cutting, and effectively improve the environment in the workplace. 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 15 mm. Compared with the aluminum chassis previously used, the cutting range of CNC plasma cutting machine has also been broadened. (end)

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