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Electrical Discharge Machining Factory
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Electrical Discharge Machining Manufacturers

Brief Introduction We have produced electric spark shaping mills from  ZNC-SW350 to SW650, axis numerical control standard type, and three-axis numerical control CNC-450, 540, 640……1060 to CNC OX-2180 OX-head type variety electrical spark shaping mills, all machine tools are designed according to international standards. On quality control, from high grade casting(we are the only company who exports to German DMG) to the last ground finish on imported equipment, with hand scraping, each accuracy error is less than 0.01mm, equip with high efficient and stabilize control machining of Taiwan electrical control cabinet, its excellent low loss and high smooth finish is the important difference from other EDM machine. Our EDM machine tools can discharge machining all kinds of plastic moulds and high precision IC moulds. 
We have more than 40 types of machine tools, and also optimize our design through 5-10. We have exported for more than 10 years, including South Korea, Russia, Turkey, Italy, Switzerland, Pakistan, the Philippines, and twelve other countries. No field service and complaint, and all our customers become our long-term cooperation partners.“Quality, price, service” are our company development elements. We get our customers' favor by our punctilious work attitude. We have detailed control rules on purchasing、machining、assembling, and technology craft, and strict examination and examination standard (60% of Japanese of JIS and European precision standard as standard), and high-quality employees who do every detail well. Our goal is “to be the best”.
Based on made in China reasonable price, and design high-quality machine tools for customers according to the Japanese (JIS) standard, expand and R&D new products, improve the usage experience of our customers, and create immense value for customers.
Our company's obedience are” integrity,y morality, quality standard, diligence, efficiency, innovative development”, we are devoted to “zero defect” high-quality products for more customers by our professional spirit, professional manufacture, and strict scientific standard to manage.

About
Nantong Sunway Science and Technology Development Co., Ltd.
As a China Electrical Discharge Machining Suppliers and Electrical Discharge Machining Factory, Nantong Sunway Science and Technology Development Co., Ltd. is a comprehensive enterprise specializing in the R&D, manufacturing, and sales of numerical control equipment. Located in Nantong, Jiangsu Province, it enjoys convenient transportation and mature industrial supporting facilities. The company's main products include multiple series such as CNC machining centers, EDM forming machines, high-speed engraving and milling machines, small gantry milling machines, CNC EDM machines, and frame milling and engraving machines, which are widely used in mold manufacturing, precision parts processing, hardware, auto parts, electronics, aerospace, and other industries.
Since its establishment, Sunway has continuously increased investment in basic manufacturing and technical equipment. It has built a high-standard foundry and a large structural part processing factory covering an area of approximately 10000 square meters, and introduced multiple advanced guideway grinders and precision processing equipment, forming independent processing and assembly capabilities from structural parts to complete machines.
Sunway has always adhered to the business philosophy of "being honest, pursuing excellent quality, working diligently, and developing through innovation". It attaches great importance to the ex-factory quality of each piece of equipment, strictly implements the testing process, and strives to deliver each product with stability and reliability. With stable performance and good service, Sunway products have not only won customer praise in China but also been exported to Europe, America, Southeast Asia, and other regions.
We believe that high-quality products stem from down-to-earth accumulation. In the future, Sunway will continue to invest in process optimization, intelligent control, customer customization, and other directions, and strive to become your trustworthy machinery and equipment manufacturing partner for a long time.
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Electrical Discharge Machining Industry Knowledge

In modern manufacturing, Electrical Discharge Machining (EDM) is a highly efficient, non-traditional machining technology widely used in the manufacture of high-strength materials and high-precision parts. Nantong Sunway Science and Technology Development Co., Ltd. leverages its extensive experience to help customers effectively utilize EDM technology through selection recommendations, sample cutting, and production line layout optimization, thereby improving their overall return on investment.


What is the basic principle of Electrical Discharge Machining?
EDM is a material removal process based on the principle of spark erosion. It uses a controlled discharge between an electrode and a workpiece to generate high temperatures, thereby melting or vaporizing the workpiece surface material. This process occurs in a non-conductive medium, eliminating mechanical contact stress and is suitable for machining materials difficult to process with traditional methods, such as carbide and super-hard metals. Nantong Sunway Science and Technology Development Co., Ltd. takes this principle into consideration when providing selection recommendations, ensuring that customers select the appropriate EDM equipment to maximize discharge efficiency and machining accuracy. By evaluating the material's electrical conductivity and thermal properties, the company guides customers in optimizing process parameters to minimize electrode loss and surface defects.


What are the main types of EDM and what are their characteristics?

EDM technology primarily includes wire EDM (Wire EDM) and sinker EDM (Sinker EDM). Wire EDM uses a thin metal wire as an electrode, cutting complex two- or three-dimensional shapes through continuous electrical discharge. It is particularly suitable for thin sheet metal and precision contour machining. Sinker EDM, on the other hand, uses a formed electrode to replicate three-dimensional shapes and is suitable for mold manufacturing and deep-cavity parts. Nantong Sunway Science and Technology Development Co., Ltd. analyzes specific customer requirements, such as geometric complexity or material thickness, in its selection recommendations to recommend the most suitable EDM type. The company emphasizes that sample trial cutting services can verify the effectiveness of different EDM types, ensuring the economic and reliable processing.


What are the key steps involved in the EDM process?

The EDM process consists of four stages: electrode positioning, gap control, pulse discharge, and chip removal. First, the electrode precisely approaches the workpiece, maintaining a small gap. Next, a high-voltage pulse triggers a discharge in the gap, generating a plasma heat source that melts the material. Chips are then flushed away by a dielectric fluid to prevent secondary discharges from affecting precision. The entire process relies on a computer control system that regulates voltage, current, and frequency to ensure a stable removal rate and surface finish. Nantong Sunway Science and Technology Development Co., Ltd.'s sample cutting service simulates actual working conditions to test the machining suitability of different materials and shapes. This service helps customers identify potential issues, such as electrode wear or thermal deformation, and optimize initial parameter settings.


What are the typical applications of EDM technology in the manufacturing industry?
EDM is widely used in aerospace, automotive, medical devices, and precision instruments, and is particularly well-suited for machining carbide tools, turbine blades, injection molds, and micro-pore structures. Its non-contact nature allows for machining brittle materials or complex internal features, while its high precision ensures dimensional tolerances within micrometers. Nantong Sunway Science and Technology Development Co., Ltd. incorporates this application knowledge into its production line layout recommendations and assesses compatibility with customers' production lines. The company recommends integrating EDM equipment into existing processes, such as using wire EDM for rapid prototyping or forming EDM for mass mold repair, to shorten lead times and reduce waste.


What are the significant advantages of EDM over traditional machining methods?
EDM's advantages include the absence of mechanical cutting forces, high surface quality, and improved machining consistency. Because it's independent of tool hardness, it can process difficult-to-machine materials such as hardened steel and titanium alloys, avoiding the deformation or cracking associated with traditional milling. Precise control of the discharge process also enables the creation of fine features and a mirror-like finish, reducing the need for post-processing. Nantong Sunway Science and Technology Development Co., Ltd. emphasizes leveraging these advantages to improve return on investment. The company provides production line layout recommendations, guiding customers in balancing the use of EDM and traditional equipment. For example, integrating EDM units into the main production line improves utilization. Combined with selection advice, the company helps customers select energy-efficient EDM systems to reduce energy consumption and operating costs.


How can EDM processes be optimized for efficient production?
Optimizing the EDM process requires focusing on parameter adjustment, electrode design, and process monitoring. Key parameters such as pulse width and gap voltage directly impact removal rate and surface roughness. Electrode material selection must be tailored to the workpiece's characteristics to maximize service life. Real-time monitoring systems can detect abnormal discharges and ensure machining stability. Nantong Sunway Science and Technology Development Co., Ltd. offers solutions based on these optimization strategies in its production line layout and equipment planning recommendations. The company analyzes its customers' production rhythms and equipment configurations and proposes integrating automated EDM cells, such as adding robotic loading systems or in-line measurement devices. This integration not only increases production capacity but also reduces the time it takes to commission new processes by validating optimization results through trial cutting of samples.