What is the reason for low high-frequency voltage of wire cutting? [Zhikai CNC professional answer]
Wire cutting is a common metal processing method that applies high-frequency voltage to the surface of the workpiece to generate electric sparks between the workpiece and the electrode, thereby cutting, cutting and engraving the workpiece. However, in actual applications, sometimes the high-frequency voltage of wire cutting is low, which may be caused by the following reasons:
1. Power supply problem:
The unstable power supply of the wire cutting machine or the power supply voltage is too low will cause the wire cutting high frequency voltage to be low. This may be caused by aging of the power line, power supply voltage fluctuations or insufficient power capacity. The solution to this problem is to check the power line, ensure that the power supply is stable, and replace the power supply or increase the power capacity as needed.
2. Molybdenum wire spacing:
During the wire cutting process, the molybdenum wire will be eroded and worn by the electric spark, causing the molybdenum wire spacing to increase, thereby affecting the stability of the electric spark discharge and the generation of high-frequency voltage. The solution to this problem is to regularly check and replace the molybdenum wire to ensure that the molybdenum wire spacing meets the requirements.
3. Workpiece surface problems:
Wire cutting requires applying high-frequency voltage to the workpiece surface. If there is oil, oxide or other contaminants on the workpiece surface, the spark discharge will be unstable or the voltage will be reduced. The solution to this problem is to clean the workpiece surface before wire cutting to ensure that the surface is clean and free of contamination.
4. Improper wire cutting parameter settings:
The parameter setting of wire cutting has a great influence on the generation and stability of high-frequency voltage. If the parameters are set improperly, such as the discharge current is too large or too small, the discharge time is too long or too short, etc., it may lead to low high-frequency voltage. The solution to this problem is to reasonably set the wire cutting parameters according to the requirements of the specific workpiece and material to ensure that the high-frequency voltage is within the appropriate range.
5. Wire cutting machine failure:
Component or system failure of the wire cutting machine may also cause low high-frequency voltage. For example, failures in the power module, high-frequency generator, electrode adjustment system, etc. may affect the generation and stability of high-frequency voltage. The solution to this problem is to regularly inspect and maintain the wire cutting machine and repair or replace faulty parts in a timely manner.
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