What is the slow wire cutting line, the wire of the low speed wire cutting machine uses copper wire as the tool electrode, generally unidirectional movement at a speed lower than 0.2m/s, in copper wire and copper, steel or super hard alloy A pulse voltage of 60~300V is applied between the processed materials, and a gap of 5~50um is maintained, and the gap is filled with an insulating medium such as deionized water (close to distilled water), so that spark discharge occurs between the electrode and the workpiece, and is consumed by each other. Corrosion, electro-erosion of numerous small pits on the surface of the workpiece, through the NC control monitoring and control, the servo mechanism performs, so that the discharge phenomenon is uniform, so that the processed object is processed to make it meet the required size. And shape accuracy products. The current accuracy is up to 0.001mm and the surface quality is close to the grinding level. The electrode wire is no longer used after discharge, and the non-resistive anti-electrolysis power supply is generally provided with an automatic threading and constant tension device. The work is stable, uniform, with small jitter, high machining precision and good surface quality, but it is not suitable for processing large thickness workpieces. Due to the precise structure of the machine tool, high technical content and high machine price, the cost of use is also high. In the early days, the one-way wire EDM machine was only an organic species of foreign companies. Although Taiwan's low-speed wire-cut EDM wire cutting machine started late, it has developed rapidly in recent years. One of the key measures is to jointly fund a number of home appliance processing machine tool manufacturers. With the support of the slow wire manufacturers, the Taiwan Industrial Technology Research Institute has invested a lot of manpower and material resources to develop key technologies. After more than 10 years of research, it has made breakthroughs in key technologies such as control systems and power supplies. The low-speed wire-cut EDM wire-cutting machine manufactured by various enterprises in Taiwan should be in the range of mid-range machines. It has reached a growth rate of 20% to 30% every year for the past three years. It is estimated that in the next five years, Taiwan’s low-speed wire-cut EDM wire cutting machine The annual output can reach 2,000 units, which can account for more than 25% of the world market. The low-speed wire-cut EDM wire cutter has high technical content and good market prospects, and can obtain a high return. It is a “strategic place” and a “strategic highland” for various manufacturers in the electric processing industry. It can also be said that whoever masters the technology of the low-speed wire-cut EDM wire-cutting machine will have the opportunity to develop and grow in the next step. In order to seize the Chinese market, electric processing machine tool manufacturers in Japan, Switzerland and Taiwan set up factories in mainland China to produce such machine tools. With the support of the special fund of the Ministry of Science and Technology, China's science and technology workers have invested a large amount of research and development, and have completed the research and development of a new generation of low-speed wire-cut EDM wire-cutting machines, which has made a major breakthrough and now has independent intellectual property rights. The product, and occupied a certain market share, its performance indicators can reach the mid-range machine level. At present, some domestic companies hope to develop low-speed wire EDM wire cutting processing technology through cooperation with related companies in Taiwan.

According to the running speed of the wire, the WEDM machine is usually divided into two categories: one is the slow wire (also called the low speed wire EDM machine) wire for low speed one-way movement, the general wire speed is low. At 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, uniform, small jitter, and good processing quality. And advanced power technology for high-speed machining with a maximum productivity of 350mm2/min

Since the wire-cutting machine adopts the method of continuously supplying the wire electrode, that is, the wire electrode is processed during the movement process, even if the wire electrode is worn out, it can be continuously replenished, so that the machining accuracy of the component can be improved. The surface roughness of the workpiece processed by the slow wire cutting machine can usually reach Ra=0.12μm and above, and the roundness error, linear error and dimensional error of the slow wire cutting machine are much faster than the wire cutting machine, so it is processed. Slow-wire cutting machines are widely used in high-precision parts.