Is there a difference in spark color between EDM and WEDM?
Is there a difference in spark color between EDM and WEDM? Both EDM and WEDM use EDM to corrode metal to get the shape we need. There is a big difference in the color of the spark generated during processing.
Wire EDM and EDM are both electrical machining processes with pulse power supply. The working voltage of WEDM is generally about 100 volts, and it is processed with small pulse width and large inter-pulse negative polarity. The current is generally below 5A. The high voltage of spark forming processing is generally above 200 volts, using large pulse width and small pulse, and the maximum current is 50 to 60A. The color of the spark of wire EDM is a little red, and the spark of EDM processing is a little white and shiny, but the particles are all Explosive launch type.
Of course, from the perspective of itself, the spark colors of different WEDM and WEDM from different manufacturers will be different. The color of the sparks produced by different EDM machines will also be different. This is mainly due to the size of the current of the high-frequency power supply processed by it and the voltage and current processed at that time. In addition, the high-frequency power supply of each company is different, so the sparks processed in the market are different in size and color. But generally speaking, if the spark is generated when the processing voltage is welt, the higher the power and the higher the current, the blue light will be generated. If the current is weak, the sparks produced are all red-yellow. And the sparks are more diffuse. To judge the high frequency of a good wire cutting, it is mainly to see whether the sparks above and below it are uniform. Typical 1 amp efficiency is currently 1500 square hours per hour.
Due to the characteristics of its own electrodes, the EDM machine needs to process the cavity, so the current it carries is much higher than that of wire EDM. To prevent fires, every EDM machine is pre-equipped with a fire extinguisher. Some machines will even be assigned to two. And with automatic induction device.
In EDM processing, the general color of the spark is similar to that of wire cutting. When our current is relatively low, the color is red and yellow. When our machining current is relatively large and rough machining is performed, the color of the electric spark is white and blue. Of course, EDM can easily lead to poor slag discharge and carbon deposition. In terms of parameter setting, it is necessary to adjust and raise the slag discharge height.
Taiye Machinery was founded in 2005, the company is located in the beautiful Zhejiang, China，Taiye machine provide a full set of professional extrusion die equipment and extrusion dies, We have an aluminum extrusion die factory and a professional extrusion die equipment company in China. Our machine tools product include machining center, CNC lathe, wire cut EDM machine, EDM machine, Vacuum Furnace, etc.
