The first factor that needs to be determined is the thickness of the metal being cut. The power supply of most CNC plasma cutting machines is rated by cutting capacity and current. Therefore, if you usually cut thin metals, you should consider a low-current CNC plasma cutting machine. Also, although small machines cut metal of a certain thickness, the cutting quality may not be guaranteed. On the contrary, you may get a finished product with almost no cuts through, and there will be useless metal residues. Each machine will have an optimal cutting thickness range set-make sure the settings are suitable for your requirements.
If you are going to cut for a long time or automatically set the cut, make sure to check the machine's work load continuity rate. Simply put, the load duration is the continuous working time before the equipment is overheated and needs to be cooled. The workload duration is usually based on 10 minutes as a standard and is determined by percentage.
Most CNC plasma cutting machines will have a pilot arc that uses high frequency to guide current through the air. However, high frequencies can interfere with nearby electronic equipment, including computers. Therefore, it is quite advantageous to eliminate these high-frequency potential problems.
There are various external parts on the CNC plasma cutting machine that need to be replaced, usually we call them consumables.
The machine you need to look for should be the one that uses the least consumables. Fewer consumables means cost savings. Under normal circumstances, the initial investment of CNC plasma cutting machine is more, and the later investment is less. However, there are two types that are replaced more frequently, that is, the electrode and the nozzle.
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