What are the requirements of wire cutting EDM machine for machining workpieces?
Wire cutting EDM machine tool is one of the more important machine tools in modern mold manufacturing. So, what are the requirements of wire cutting for processing workpieces?
Workpiece material: For non-forged and non-quenched materials, it is best to use low-temperature tempering to eliminate internal stress before online cutting, because if the internal stress of the workpiece is not eliminated, some workpieces will crack during cutting, and the molybdenum wire will be cracked. Knock off; some will deform the gap, pinch off or snap off the molybdenum wire. For example, t8 steel after quenching should be used as little as possible in the on-line cutting process and it is easy to cause wire breakage. When cutting thick aluminum materials, due to the difficulty of chip removal, the conductive block wears greatly, so pay attention to replacing it in time.
Workpiece clamping: Although the workpiece is subjected to extremely small force during the wire cutting process, it is still necessary to firmly clamp the workpiece to prevent the wire from breaking due to the change of the workpiece position during the processing. At the same time, wire breakage caused by the self-weight of the workpiece and the elastic deformation of the workpiece material should be avoided. When processing thick and heavy workpieces, you can use a magnet to attract the falling workpiece at the end of processing, or manually protect the falling workpiece so that it falls parallel and slowly to prevent wire breakage.
Select the appropriate discharge gap according to the thickness of the workpiece: the discharge gap should not be too small, otherwise it is easy to cause short circuit, which is not conducive to cooling and discharge of electro-corrosion; if the discharge gap is too large, it will affect the surface roughness and processing speed. When cutting workpieces with large thickness, the current with large pulse width should be selected as much as possible, and the discharge gap should be larger, so as to enhance the chip removal effect and improve the stability of cutting.
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.
