Sanluo Precision is a company specializing in EDM machining and offering ultra-precise customization services to customers. It supports the customization of complex and difficult parts. As an experienced manufacturer, Sanluo Precision is well aware of the important role of micro wire processing in precision manufacturing. EDM wire machining uses micro wires (with diameters as small as φ0.02mm) as electrodes to perform discharge machining, which can produce micro features that traditional processing methods cannot achieve. The micro hole diameter can be as small as φ0.02mm, with a depth-to-diameter ratio of up to 50:1. The micro axis diameter can be as small as φ0.03mm, with a coaxiality of 0.002mm. Micro flow control chip molds, micro injection molds, various micro irregular holes, etc. are processed. It is applied to customized services for miniature medical devices, precision molds, micro flow control chips, optical fiber connectors, spinner plates, etc., and relies on high-precision positioning systems (resolution 0.1μm), ultra-fine electrode manufacturing technology, and precise discharge control systems to provide customers with high-micron precision high-quality micro parts.
EDM wire machining is a non-contact precision processing technology based on the principle of electrical erosion. Through the continuous movement of copper wires as electrodes, it generates pulsed spark discharge and erodes the metal, capable of processing various conductive materials and small holes, irregular holes, taper and complex through holes. The processing accuracy can reach ±0.001mm at the highest level, and the stability of wire EDM can reach ±0.002mm. The surface roughness can be as optimal as Ra0.02μm. Sanluo Precision focuses on precision EDM wire processing and CNC wire cutting, has a mature system of rough/finishing wire processing parameters, high-end equipment such as oil cutting machines, and stable processes, and can provide regular precision parts and customized special processing services such as fine wires, small holes, taper, multi-axis linkage, etc. It is widely used in precision molds, 3C, medical devices, etc., to meet customers' various precision processing needs with high precision, high stability and professional customization capabilities.
As a professional manufacturer and supplier of EDM wire machining, it naturally has the ability to achieve high-precision processing and ensure dimensional consistency in key structures such as micro-holes, micro-axes, and micro-molds. Sanluo Precision addresses micro-holes, micro-grooves, and micro-irregular contours by using electrodes as fine as φ0.02mm and stable discharge control, achieving micro-holes with a diameter of φ0.02mm and a depth-to-diameter ratio of 50:1, and micro-axes with a diameter of approximately φ0.03mm and a coaxiality of 0.002mm. For structures such as square holes, polygonal holes, and irregular holes, we use dedicated electrodes and precise trajectory control to maintain shapes and positional tolerances within the micron range, providing reliable wire EDM processing services for miniature medical devices, spinner plates, and fiber connectors, etc.
The single wire cutting method often cannot handle all parts. We meet the processing needs of different types of parts by configuring various processing equipment. How are the advantages of wire EDM and wire electric discharge machining demonstrated? Sanluo Precision has comprehensively laid out three types of processes: slow wire, medium wire, and fast wire: The slow wire uses copper wire with a diameter of φ0.03 to 0.25mm, multiple cuts, with an accuracy of approximately ±0.002 to ±0.005mm, surface roughness Ra 0.1 to 0.8μm, suitable for high-precision mold inserts and precision cavities; the medium wire uses multiple cuts with molybdenum wire, with an accuracy of approximately ±0.005 to ±0.01mm, surface roughness Ra 0.4 to 1.6μm, achieving a balance between accuracy and cost; the fast wire provides a cutting efficiency of 80 to 120mm²/min within an accuracy range of ±0.01 to ±0.02mm, suitable for rough processing and large-scale structural components. By combining different processes reasonably, EDM wire machining can both be precise and fast.
Without high-performance equipment and process control, it is difficult to truly achieve precision EDM wire processing based solely on experience. The slow wire cutting stroke at Sanluo Precision Factory is approximately 350 to 800mm, with a taper cutting range of ±30°, a precision of ±0.001mm, a surface roughness of Ra0.1μm, and support for four-axis linkage, upturned shapes, and high-precision taper cutting. It is suitable for stamping convex and concave dies and complex inserts. The medium wire cutting efficiency is approximately 30% higher than that of slow wire cutting, with a cost reduction of about 50%, achieving a balance between batch production and precision. Fast wire cutting has an automatic threading and automatic hole-finding function, with a threading success rate of over 95%, significantly reducing downtime and improving the stability of batch production. Combined with EDM machining forming discharge, it can complete rough, fine processing and local fine repair on the same processing platform, making the processing quality and delivery time easier to control.
EDM wire machining is not merely used for simple sheet material cutting. It has application demands in the mold, electronic product, and semiconductor industries. In mold manufacturing, Sanluo Precision can achieve a unilateral gap of 0.003 to 0.01mm for the convex and concave dies of stamping molds, and the punching accuracy is approximately ±0.005mm. For plastic molds and complex cavities, slow wire cutting and conical cutting can ensure smooth demolding, and the roughness of the R5 to 20mm rounded surface of the concave die of the stretching mold can reach Ra0.1μm. In the field of precision machinery, gears with a module of 0.2 to 3mm can be processed, with a tooth profile accuracy of grade 5 and a tooth profile error of less than 0.005mm. They can be used as templates, standard contours, and inspection benchmarks.
In the field of electronic products, the contour cutting accuracy of aluminum alloy mobile phone body frames is approximately ±0.005mm, and the surface Ra is 0.2μm; for stainless steel thin plates with a thickness of 0.005 to 0.3mm, the slit spacing of the shielding cover is controlled within ±0.005mm. In the automotive industry, the precision of stretch molds, trimming molds, and body covering molds can reach ±0.002mm, and the surface quality meets the requirements of batch stamping. With its stable combination of EDM wire machining and laser beam machining capabilities, Sanluo Precision has provided customized wire cutting services for Foxconn, Huawei, BYD, and other enterprises, producing tens of thousands of wire-cut parts annually, and has become a trusted Chinese manufacturer and supplier for customers with high precision, high efficiency, and high satisfaction.
