PA Extruded Copper-Aluminum Lap Welding Process

Reliable Welding & Excellent Conductivity

Solid-state lap welding process achieves contact resistance ≤3μΩ and tensile strength ≥130MPa, enabling currents from hundreds to thousands of amperes. Effectively suppresses intermetallic compound formation at the copper-aluminum interface, preventing galvanic corrosion and ensuring long-term conductive stability

Superior PA Insulation & High Safety

The PA insulation layer provides dielectric strength ≥30kV/mm and surface resistivity >10¹³Ω, achieving Class B insulation (130°C) or higher. Features UL94 V0 flame retardancy and excellent sealing, effectively blocking moisture, dust, and chemical agents

Significant Lightweight & Cost Advantages

PA material density is only 1.13–1.15 g/cm³, reducing weight by over 40% compared to all-metal insulated structures. The strategic combination of copper and aluminum reduces precious metal usage, resulting in lower overall cost than all-copper insulated components in mass production

Durable & Widely Adaptable

Operates stably from -40°C to 120°C with excellent fatigue and vibration resistance. Supports customization of cross-section and shape based on conductor specifications and installation space, adapting to various current ratings and equipment layout requirements