1. The material of the plasma cutting workpiece is different
According to different cutting materials, the cutting speed is different. Common cutting materials: carbon steel, stainless steel, the cutting speed is faster, cast iron is slightly slower, followed by aluminum, the slowest is copper, because copper and aluminum are more difficult to cut, and the cutting speed is faster than The first two are much slower, and the cutting thickness of the same power CNC plasma cutting machine is much smaller than that of stainless steel and carbon steel when processing copper and aluminum.
2. The size of the input voltage of the plasma cutting site
The general factory power supply voltage is AC 380V, but due to the different conditions of each factory site, the general voltage fluctuates between 365V and 410V (of course, the difference is even greater in some places), so the input voltage is also a factor that affects the cutting speed. When the load rate of the power grid is too large, it may cause the power supply voltage to be too low, and also affect the cutting speed of the CNC plasma cutting machine.
3. working gas and flow
The working gas includes cutting gas and auxiliary gas. Some equipment also requires arc starting gas. Usually, suitable working gas should be selected according to the type of cutting material, thickness and cutting method. The cutting gas must not only ensure the formation of the plasma jet, but also ensure the removal of molten metal and oxide in the incision. Excessive gas flow will take away more arc heat, making the length of the jet shorter, resulting in reduced cutting ability and arc instability; too small gas flow will make the plasma arc lose its proper straightness and cause cutting As the depth becomes shallower, it is easy to produce dross; therefore, the gas flow rate must be well matched with the cutting current and speed.
