This foot-operated pneumatic-hydraulic diffusion welding machine is a precision system engineered for high-performance joining of copper strips/busbars up to 3mm​ and dissimilar metals. It employs innovative pneumatic-hydraulic boosting technology, utilizing compressed air to generate stable, hydraulic-level high pressure. Combined with resistance heating, it creates a high-temperature, high-pressure environment at the workpiece interface, inducing solid-state diffusion​ of metal atoms to achieve a high-quality metallurgical bond without melting. The machine perfectly integrates the fast response of pneumatic systems with the stable high-pressure output of hydraulic systems, offering significant advantages of low energy consumption, low noise, and long service life. It is particularly suitable for the reliable welding of critical components like copper-aluminum flexible connectors, composite busbars, and conductive straps​ in new energy vehicle batteries and power electrical applications, providing an ideal process solution for achieving high-conductivity, high-strength joints

• High-Rigidity Structure Optimized for Copper Strips: Features an integral single-sided C-frame with high rigidity, internally reinforced with multiple ribs, specifically designed to withstand the high pressure of diffusion welding. Ensures minimal frame deformation when welding materials like 3mm thick copper strips, providing a solid foundation for process stability and operational safety.

• Precise Pneumatic-Hydraulic Force & Speed Control: A pneumatic-hydraulic booster cylinder​ delivers smooth, adjustable welding force. The descent and ascent speeds of the pressure head are independently and infinitely adjustable, enabling gentle contact with and pressure release from the workpiece. This effectively protects workpiece surfaces and reduces impact noise, making it ideal for welding delicate flexible connectors.

• Linear Guidance Ensures Spot Accuracy: The upper electrode moves vertically guided by high-precision linear guides, offering extremely high repeatability positioning accuracy. This fundamentally guarantees the absolute precision and consistency​ of each weld point location, which is critical for sequential welding of multi-spot arrays or elongated workpieces.

• Comprehensive Electrical Insulation & Safety: The secondary circuit utilizes a design with an insulated pressure cylinder base and upper arm, ensuring safe and reliable insulation performance. This allows for direct installation and operation on conductive worktables without short-circuit concerns, simplifying setup and enhancing safety.

• High-Power, Efficient Water-Cooled Welding Source: The main circuit incorporates a fully water-cooled resistance welding transformer and rectifier module, delivering robust, stable, and efficient power output. Continuous water cooling ensures sustained operational capability and high energy efficiency under high-current, continuous welding conditions.

• Foot Control & Intelligent Safety Protection: Welding cycles are controlled via a foot switch, freeing the operator's hands for efficient and convenient operation that aligns with ergonomics. Integrated air and water pressure monitoring switches with audible/visual alarms​ effectively prevent welding initiation during coolant or power medium abnormalities, providing proactive dual protection for both equipment and personnel