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  2015 Hua Fei CNC company dinner

• How to choose a suitable welding positioner?

• How to maintain the welding positioner?

• Rescue measures for CNC cutting machine with large cutting error

• How to protect a welding positioner?

• How to purchase a good welding positioner?

• Maintenance method of special welding chuck for positioner

• How much do you know about the classification of the welding rotators?

• Structure Types of Welding positioners

• The 8 principles for choosing a welding positioner

• Common fault problems and solutions of welding positioner

Huafei CNC will show you how to use the CNC plasma cutter correctly.

1. To ensure the correct pressure and flow of the plasma The correct pressure and flow of the plasma is very important to the service life of the consumables. If the air pressure is too high, the life of the electrode will be greatly reduced; if the air pressure is too low, the life of the nozzle will be affected.

2. Use a reasonable cutting distance According to the requirements of the instruction manual, use a reasonable cutting distance. The cutting distance is the distance between the cutting nozzle and the surface of the workpiece. When perforating, try to use 2 times the normal cutting distance or use the plasma arc Maximum height.

3. The thickness of the perforation should be within the allowable range of the machine system. The plasma cutter cannot perforate the steel plate that exceeds the working thickness. The usual perforation thickness is 1/2 of the normal cutting thickness.

4. the nozzle should not be overloaded. Use the nozzle to overload (that is, exceed the working current of the nozzle), which will quickly damage the nozzle. The current intensity should be 95% of the working current of the nozzle. For example, the current intensity of a 100A nozzle should be set to 95A.

5. Keep the plasma gas dry and clean. The plasma system needs dry and clean plasma gases to work properly. Dirty gas is usually a problem with gas compression systems, which can shorten the life of consumables and cause abnormal damage. The method of testing the gas quality is to set the cutting torch in the test state and put a mirror under it to consume the gas in the torch. If water vapor and mist appear in the mirror, you need to find out the cause and correct it.

6. Cutting should start from the edge, and cut from the edge as much as possible, not perforation cutting. Using the edge as a starting point will prolong the life of the consumable. The correct method is to point the nozzle directly at the edge of the workpiece before starting the plasma arc.

7. Avoid Plasma Arc Elongation and Expansion If the plasma arc can only reach the workpiece surface by elongation and expansion, the plasma arc will generate such stretching and expansion at the beginning and end of the cutting, which will cause abnormal damage to the nozzle. This problem can be avoided if the correct starting point technique is used and the appropriate "arc-break" signal time is selected.

8. Reduce unnecessary "arc (or pilot)" times. The consumption of nozzles and electrodes is very fast at the beginning of the arc. Before starting, the cutting torch should be placed within the walking distance between the cutting metal.

9. apply splash-resistant chemical coating into the protective shell Splash-resistant chemical coating helps reduces the accumulation of slag on the protective shell. But be sure to remove the protective shell from the torch before applying splash-proof paint.

10. Remove the slag from the protective shell.

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