Features and Speed Adjustment of Plasma Cutting Machine

1. Characteristics and application of plasma cutting machine

With different working gases, plasma cutting machines can cut various metals that are difficult to cut with oxygen. Plasma cutting machines are widely used in automobiles, locomotives, pressure vessels, chemical machinery, nuclear industry, general machinery, construction machinery, steel structures and other industries. !

By obtaining plasma from water vapor, the cutting effect is better especially for non-ferrous metals (stainless steel, carbon steel, aluminum, copper, titanium, nickel); its main advantage is that when cutting metals with small thickness, the plasma cutting speed is fast, Especially when cutting ordinary carbon steel sheets, the speed can reach 5~6 times that of oxygen cutting method, the cutting surface is smooth, the thermal deformation is small, and there is almost no heat affected zone.

The plasma cutting machine has developed to the present, the working gas that can be used (the working gas is the conductive medium of the plasma arc, and the heat-carrying body, and at the same time, the molten metal in the incision must be excluded) The cutting characteristics, cutting quality and speed of the plasma arc are all different. have a clear impact. Commonly used plasma arc working gases are argon, hydrogen, nitrogen, oxygen, air, water vapor and some mixed gases.

2. The speed adjustment of the plasma cutting machine

The general factory power supply voltage is AC 380V, but due to the different conditions of each factory site, the size of the input voltage on the cutting site is cut. Generally, the voltage floats between 365V and 410V (of course, there are even larger differences in some places), so the input voltage is also a factor that affects the cutting speed.

Plasma cutting speed is obviously better than flame cutting, which is the main reason why many companies decide to choose plasma cutting, among the two types of cutting methods used in CNC cutting machines. But what exactly should the speed be set to when using plasma cutting?

According to different cutting materials, the material of the cutting workpiece is different. The cutting speed of plasma cutting machine is also different. Common cutting materials: carbon steel, stainless steel cutting speed is faster, cast iron is slightly slower, followed by aluminum, the slowest copper, because copper and aluminum are more difficult to cut, the cutting speed is higher than the first two. Much slower, and the same power plasma cuts copper and aluminum with a much smaller thickness than stainless steel and carbon steel.

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