The 20th CISMEF came to a successful close, thanks to the active participation and joint efforts of all parties involved. Among the numerous participating companies, we stood out at our booth 19.2A04 with our resistance welding innovations, becoming one of the focal points of the fair. Whether in the field of industrial manufacturing or emerging technology industries, our Sunke advanced welding solutions have demonstrated strong adaptability and competitiveness. 

Overview of CISMEF

Since its inception in 2004, CISMEF has remained committed to creating a high-quality platform for domestic and international SMEs to display, trade, communicate, and cooperate. As one of the most influential and expansive international events for SMEs in the Asia-Pacific region, the CISMEF 2025 attracted over 2,000 companies from more than 40 countries and organizations^[1][2].

Industry Insight and Key Challenge

1. Material Compatibility

As manufacturing sectors increasingly adopt advanced materials such as high-strength steels, aluminum alloys, magnesium composites, and dissimilar metal combinations, traditional welding approaches prove inadequate. 

Each material presents unique thermal conductivity, melting points, and metallurgical properties that demand precisely calibrated welding parameters. The difficulty intensifies when joining dissimilar materials, where thermal expansion coefficients and chemical compatibility create additional technical barriers

2. Energy Efficiency

With rising global energy costs and increasingly stringent environmental regulations, energy efficiency in welding processes has become a critical concern. Traditional resistance welding methods often suffer from low energy efficiency, with a substantial portion of electrical energy wasted as ineffective heat radiation or equipment losses. This inefficiency not only increases operational costs but also elevates the carbon footprint.

3. Precision Demand

The relentless miniaturization trend across industries, particularly in electronics, automotive, and aerospace sectors, has elevated precision requirements to microscopic levels. Modern applications demand the capabilities of precise welders that can deliver sub-millimeter accuracy, consistent heat input control, and reproducible weld geometries across thousands of production cycles. Traditional manual and semi-automated welding processes cannot achieve the consistency required for these precision applications.

4. Automation Integration

The Industry 4.0 transformation necessitates seamless integration between advanced welding solutions and broader manufacturing automation networks. In modern production environments, resistance welding machines ought to operate as intelligent nodes within interconnected manufacturing ecosystems, providing continuous feedback and accepting dynamic parameter adjustments based on upstream and downstream process requirements.

Star Exhibits of Sunke Advanced Welding Solutions

① SCD7 Dual Pulse Capacitor Discharge Welder

Our SCD7 is a high-precision resistance welder that utilizes capacitor charging for energy storage and discharge for welding. This design dampens the impact of power grid fluctuations, ensuring high welding consistency.

Its dual-pulse mode enhances welding reliability and quality: The initial pulse removes surface oxides, while the second pulse delivers high energy to complete the weld, curtailing the heat-affected zone.

In addition, the capacitor discharge welding machine integrates parameter settings and quality monitoring. Its large touch screen supports intuitive adjustments, real-time waveform viewing, and one-touch parameter saving.

② SCD9 Capacitor Discharge Welder

The SCD9 Capacitor Discharge Welder combines innovative design with cutting-edge technology to address modern manufacturing challenges. The thoughtfully engineered modular structure allows for quick component replacement and system upgrades. The three-phase voltage input limits grid impact while maintaining operational stability, even in demanding environments. 

The upgraded charging circuit eliminates traditional transformers and current-limiting resistors, effectively reducing energy loss and consuming only 30% of the power required by traditional SCR energy storage welders.

Customizable output waveforms of this advanced welding solution can adapt to diverse components, simultaneously lowering welding spatter and post-weld grinding requirements, improving productivity, and lowering manufacturing costs.

③ SAI8 Precision Resistance Welding Machine

Our SAI8 series meets a variety of complex welding requirements, leveraging inverter technology, powerful CPU computing power, and advanced welding iterative techniques. 

This advanced welding solution turns pre-programming welding current into reality, allowing real-time synchronization and monitoring of welding current waveforms via a mobile interface. 

The SAI8 series offers 8 programmable output welding current waveforms, including: DC /AC inverter type, energy storage type, transistor type, sine wave type, DC impact wave type, pulse thermocompression welding type, and AC low-frequency welding type.

Typical Applications of Sunke Advanced Welding Solutions

1. Automobile Component Welding Applications

Automotive component welding presents major pain points such as thermal distortion from large and complex geometries, as well as the need for precise parameter control in high-volume production. 

Based on eight programmable current waveforms, our SAI8 Precision Resistance Welding Machine solves these issues, adapting to various component requirements. Its precision current control and real-time waveform monitoring significantly lessen heat-affected zones while improving production yield rates.

2. Energy-Efficient Welding Applications

The fuel tank industry implies exceptional welding tightness, yet faces problems with pore formation, spatter, and leakage risks. Thin steel plate construction further complicates the process, being prone to burn-through and deformation. 

SCD9 Capacitor Discharge Welder is suited for components in automotive subassemblies, fuel tanks, and metal housings. This advanced welding machine optimizes output waveforms to control spatter and limit post-weld grinding, thereby ensuring reliable sealing integrity

3. Micro Resistance Welding Applications

SCD7 is ideal for high-precision applications such as microelectronic pins, battery tabs, and small conductive components. Its dual-pulse function improves weld quality by first cleaning the surface and then applying controlled energy, ensuring accuracy without damaging sensitive parts.

Wrapping-up

The 20th CISMEF 2025 showcased our advanced welding solutions, which not only enhance welding quality and consistency but also contribute to cost reduction and environmental sustainability. 

Contact us today to discover how Sunke advanced welding solutions change your manufacturing processes and drive your business forward.

Reference

[1]. Available at: https://ysln.ycwb.com/content/2025-07/01/content_53506475.html 

[2]. Available at: https://www.cismef.com.cn/zbh-cms/template-pc/1927287297129312257.html