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Cutting Parameter Table for Fanyang Brand FY-402

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Cutting Parameter Table for Fanyang Brand FY-402
Cutting Current （A)	Plate Thickness （mm）	Cutting Speed （mm/min）	Arc Voltage Value	Air Pressure （Mpa）	Nozzle Model	Positioning Height （mm）	Piercing Time （s）
120A	4	4500	155	0.55±0.3	402120	6	0
	6	3800	155	0.55±0.3	402120	6	0
	8	3100	155	0.55±0.3	402120	6	0.5
	10	2300	155	0.55±0.3	402120	6	0.5
	12	2100	155	0.55±0.3	402120	6	0.5
Cutting Current （A)	Plate Thickness （mm）	Cutting Speed （mm/min）	Arc Voltage Value	Air Pressure （Mpa）	Nozzle Model	Positioning Height （mm）	Piercing Time （s）
200A	14	2500	155	0.55±0.3	402200	8	0.3
	16	2100	160	0.55±0.3	402200	8	0.3
	20	1700	163	0.55±0.3	402200	8	0.5
	25	1300	165	0.55±0.3	402200	8	0.8
	30	1000	165	0.55±0.3	402200	8	1.2
Cutting Current （A)	Plate Thickness （mm）	Cutting Speed （mm/min）	Arc Voltage Value	Air Pressure （Mpa）	Nozzle Model	Positioning Height （mm）	Piercing Time （s）
300A	30	1300	165	0.55±0.3	402300	10	1
300A	35	1050	165	0.55±0.3	402300	10	1.4
Cutting Current （A)	Plate Thickness （mm）	Cutting Speed （mm/min）	Arc Voltage Value	Air Pressure （Mpa）	Nozzle Model	Positioning Height （mm）	Piercing Time （s）
400A	30	1350	165	0.55±0.3	402400	10	1.2
	35	1250	165	0.55±0.3	402400	10	1.4
	40	800	170	0.55±0.3	402400	10	2
The above data is for reference only, and specific adjustments should be made in real time according to on-site cutting conditions.
Precautions When cutting thin plates with plasma, the nozzle orifice is small and the arc-concentrating ability is strong, which results in poor arc transfer ability. In this case, we need to lower the positioning height to ensure that the cutting arc can be successfully transferred to the workpiece. When using plasma cutting, we should pay attention to two key points: Listening: Pay attention to the sound. If the sound is harsh, it indicates that the electrode has worn more than 90%, and the electrode must be replaced immediately. If the sound is hollow, it means there is insufficient gas supply, so check the gas supply system promptly. Observing: Observe the plasma arc and the splash during piercing. During normal cutting, the plasma arc and the arc below the workpiece will form a 15-degree angle, which ensures the best cutting effect. The normal plasma arc is bright white. If it turns light blue, it indicates a burnout or short-circuit fault of the consumable parts. Ensure a 100% plasma arc ignition success rate. If the ignition success rate is lower than 100%, adjust the distance of the high-frequency ignition to enhance the intensity of high-frequency ignition. When using an air compressor for gas supply, ensure the air is clean and pure. A three-stage filtration system must be installed, and the filter elements of the three-stage filtration system must be replaced every two months. When using a cooling water tank, it is recommended to use an air-conditioned refrigerated water tank, as it has the longest service life. When replacing the electrode and nozzle, the plasma gas test function must be turned on to blow dry the moisture inside the electrode and nozzle (perform the gas test 2-3 times). When using an air compressor, it must meet the gas supply requirement of the cutting torch (not less than 0.6 MPa). When using a cooling water tank, it must meet the flow rate requirement. Note: For the 120A nozzle, the cutting current shall not exceed 130 amperes. For the 200A nozzle, the cutting current shall not exceed 230 amperes. For the 300A nozzle, the cutting current shall not exceed 330 amperes.


Specifications Requirements
200A plasma Air switch: not less than 150A Cutting ground wire: not less than 50 mm² Plasma three-phase input wire: not less than 16 mm² (national standard) The three-phase input wire of the air switch shall not be smaller than that of the plasma.
300A plasma Air switch: not less than 200A Cutting ground wire: not less than 70 mm² Plasma three-phase input wire: not less than 25 mm² (national standard) The three-phase input wire of the air switch shall not be smaller than that of the plasma.
400A plasma Air switch: not less than 250A Cutting ground wire: not less than 90 mm² Plasma three-phase input wire: not less than 35 mm² (national standard) The three-phase input wire of the air switch shall not be smaller than that of the plasma.

Cutting Parameter Table for Fanyang Brand FY-402

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