What should we do if the wire is interrupted in the wire cutting process?
Wire EDM machine must first ensure that the wire is not cut during the cutting process. If the broken wire occurs during the cutting of the workpiece, it will not only bring about the trouble of re-threading and cause certain economic losses, but also produce broken wire marks on the workpiece, which will affect the processing quality, and in severe cases, the workpiece will be scrapped.
Therefore, wire breakage should be prevented during WEDM. In the actual processing process, there are many reasons for wire breakage due to processing equipment, processing technology and other aspects, and it is necessary to constantly summarize processing experience in the work. The following is an analysis of some reasons for wire breakage in WEDM from the perspective of actual production, and some solutions are proposed.
Reasons for wire breakage at the beginning of cutting:
1. The machining current is too large and the feed is unstable; adjust the power parameters to reduce the machining current, and increase the machining current when the workpiece is cut into the workpiece and no sparks appear on the wall of the workpiece.
2. The electrode wire vibrates violently; check whether the electrode wire is too loose or inconsistent everywhere; check the wire transport mechanism, such as the guide wheel, wire drum, etc., for abnormal beating or vibration and adjust it.
3. There are burrs, oxide layers or sharp edges on the surface of the workpiece; remove the burrs, oxide layers or sharp edges. In the case of oxide layers, high current and large pulse width can also be used to cut in.
Reasons for regular wire breakage:
Most of the wires are broken when reversing on one or both sides. When the wire drum is reversing, the high-frequency power supply cannot be cut off in time, so that the electrode wire is blown. Adjust the two travel switches. If they are invalid, check the circuit part to ensure that the high frequency is turned off first and then commutated.
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.
