The advantage of the plasma cutting machine is that the plasma arc energy is more concentrated, the temperature is higher, the cutting speed is faster, the deformation is small, and the materials such as stainless steel and aluminum can be cut.
The insufficiency of plasma cutting is that the arc is strong, the noise is loud, the dust is much, and there is a certain pollution to the environment. For medium and thick, many underwater plasma cutting is used, and the cutting thickness is also limited. Similarly, gas flow, arc length, telegraph quality, current magnitude, and cutting speed all affect quality, and it is not as easy to grasp as it is. The plasma cutting gun should not be more, because the cutting speed is faster, it is easy to be affected by the above factors, and the cutting quality is different. Generally speaking, for thin plate cutting, the surface quality of the plasma cutting incision is superior to that of the fire filling, and the hanging residue is rare.
In recent years, foreign manufacturers have developed a new technology called fine plasma or high-precision plasma, which has been introduced by domestic manufacturers. The effect is better. By improving the design of the cutting moment, the quality of the cutting surface of the workpiece is significantly improved, and the verticality of the edge can reach 0-1.5°, which is particularly advantageous for improving the cutting quality of the thick plate. Due to the improved cutting gun, the electrode life is increased several times. However, the distance between the cutting gun and the steel plate is relatively high, and the height sensor on the cutting gun is required to be more sensitive, and the torch lifting reaction is faster.
Therefore, the use of plasma cutting 4-30 mm steel plate is an ideal method to avoid the disadvantages of slow oxygen cutting speed, large deformation, severe cut of the incision, and serious slag. A blank of a certain thickness of stainless steel or the like is obtained.