What is WEDM-LS process, What is wire WEDM-LS used for?

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What is WEDM-LS process, What is wire WEDM-LS used for?

(Wire Electrical Discharge Machining is referred to as WEDM), which belongs to the category of electrical machining. When the former Soviet Union Lazarenko and his wife studied the phenomenon and causes of switch contacts damaged by spark discharge, they found that the instantaneous high temperature of electric sparks can melt local metals. , Oxidized and corroded away, thus pioneering and inventing the EDM method. The wire cutting machine was also invented in the former Soviet Union in 1960.

precision EDM WIRE EDM

Wire EDM machines can be divided into high-speed reciprocating wire EDM (Reciprocating type High Speed Wire cut Electrical Discharge Machining, commonly known as “fast wire”), and low-speed unidirectional wire EDM (Low Speed one-way walk Wire cut Electrical Discharge Machining, commonly known as “WEDM-LS“) and Vertical Wire Electrical Discharge Machining machine tool With Rotation Wire.

Nowadays, the WEDM-LS is most common technique to machine custom parts due to most of parts require high quality surface and precise dimensions, it is the best cost effective and best quality option.

What is WEDM-LS?

Slow wire cutting is a type of wire EDM, also called (WEDM-LS). It uses continuously moving fine metal wire (called electrode wire) as an electrode to perform pulse spark discharge to remove metal and cut the workpiece. It is mainly used to process all kinds of complex and precise small workpieces.

What is WEDM-LS use for?

WEDM-LS (also called low-speed wire-moving wire-cut electric discharge machine tool) The electrode wire moves in a low-speed one-way, generally the wire speed is lower than 0.2mm/s, the accuracy is 0.001mm, and the surface quality is close to the grinding level. The electrode wire is no longer used after discharge, and the work is stable and uniform, with little jitter, and good processing quality. Moreover, it adopts advanced power supply technology to realize high-speed processing, and the maximum productivity can reach 350mm2/min.
Because the slow-moving wire cutting machine adopts the method of continuous wire feeding of the wire electrode, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so the machining accuracy of the parts can be improved. The surface roughness of the workpiece processed by the slow-moving wire-cutting machine can usually reach Ra=0.12μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire-cutting machine are much better than the fast-moving wire For high-precision parts, slow-moving wire cutting machines have been widely used.


  1. surface finishing quality, flatness
  2. precision as good as ±0.0025mm

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