Arc welding is a fusion welding process that uses an electric arc as the heat source. The mainstream types include MIG/MAG (Metal Inert/Active Gas Welding) and TIG (Tungsten Inert Gas Welding), making it the most adaptable and widely used fusion welding process in industrial manufacturing. MIG/MAG welding is suitable for medium-thick plate structures, featuring deep penetration and high efficiency, compatible with carbon steel, stainless steel, aluminum alloy and other materials. TIG welding is ideal for thin plates and precision components, producing aesthetically pleasing, high-quality welds with no spatter or impurities, well-suited for high-precision applications such as motor housings and precision pipelines.

The core advantages of arc welding are strong adaptability, high joint strength, and excellent sealing performance. It can realize various joint types including butt, corner, and lap joints. The weld is a metallurgical bond with strength reaching the level of the base metal, while ensuring reliable sealing of the welded area. For this reason, arc welding is the premier choice for welding core structures of new energy vehicles.

In new energy vehicle manufacturing, arc welding is applied across all key load-bearing and sealed components, serving as a critical guarantee for structural safety.

• Power battery box welding: Battery trays and frame structures are mostly made of aluminum alloy or high-strength steel. Arc welding delivers high sealing and high strength, ensuring structural rigidity and waterproof performance to withstand vehicle vibration and impact, and eliminating risks of deformation or fluid leakage.

• Chassis component welding: Subframes, suspension brackets, longitudinal beams and other key load-bearing parts rely on arc welding for high-strength joining, ensuring chassis rigidity, crash safety, and support for vehicle weight and driving loads.

• Motor and pipeline welding: Motor housings, cooling lines, high-pressure pipelines and other precision parts use TIG welding to produce clean, impurity-free, well-sealed welds, ensuring stable motor operation and safe fluid delivery.

• Other core components: Battery pack brackets, body reinforcement beams and other structural parts all depend on arc welding for reliable joining.

Intelligent upgrading is the highlight of Eunice’s arc welding system, thoroughly solving the quality and efficiency bottlenecks of conventional arc welding. Centered on a high-precision 6-axis arc welding robot, the system integrates a laser seam tracking system, penetration online monitoring module, and intelligent process parameter library to achieve full-process intelligent control.

• The seam tracking system identifies the weld path in real time, dynamically adjusts the torch trajectory, and compensates for assembly gaps and thermal deformation with a tracking accuracy of ±0.05 mm, ensuring accurate alignment and uniform formation.

• The penetration monitoring module collects welding current, voltage and temperature in real time, judges penetration status, and automatically adjusts parameters or alarms for abnormalities, preventing defects such as lack of fusion, porosity and cracks.

• The built-in digital twin process library contains thousands of welding parameters for different materials, thicknesses and joint types, enabling one-click process matching without manual debugging, greatly improving efficiency and stability.

Eunice’s arc welding solution is built on three profound strengths: welding expertise, innovation-driven R&D, and globally proven quality.

• Welding expertise: With more than 10 years of deep experience in intelligent welding, Eunice has full capabilities in arc welding process development and system integration. It masters MIG/MAG/TIG processes and has optimized heat input control and deformation suppression for aluminum alloys and high-strength steels in new energy vehicles, establishing itself as a leading intelligent welding solution provider.

• Innovation capability: The company holds numerous invention patents related to welding. It continuously iterates core technologies including seam tracking, penetration monitoring and intelligent temperature control, integrates AI algorithms into welding control, and realizes autonomous parameter optimization to lead the intelligent upgrading of arc welding.

• Globally proven quality: Products are exported to many countries and regions, widely used in new energy vehicles, construction machinery, rail transit and other fields. After rigorous working condition verification and quality inspection, the system’s reliability, stability and adaptability are trusted by customers worldwide.

Arc light shines with craftsmanship; steel structures secure safety. Eunice’s robotic arc welding system has become the core support for welding key structures of new energy vehicles through professional processes, intelligent technology and reliable quality. From the sealed welding of battery boxes to the strength assurance of chassis components, from precision welding of motor housings to firm joining of body beams, Eunice forges a solid safety barrier for new energy vehicles with every perfect weld.

In the future, the company will continue to deepen innovation in arc welding technology, focus on the welding needs of core new energy components, and develop smarter, more efficient and more precise welding solutions. With craftsmanship forged in arc light, we guard the safety and reliability of every new energy vehicle.