The strength of weld joints is critical on a complex mechanical assembly to ensure the product performs to its intended application and functionality. In addition to spot or resistant welding, Kingfine uses the most advanced laser welding, brazing, induction welding, friction stir welding, and ultrasonic welding technologies to weld copper to copper or aluminium to copper into an assembly. Our welding work cells are usually highly automated to achieve operation efficiency for better cost savings, producing the highest quality product for our customers. Additional advantages of our laser welding process are the short time cycles and minimal deformation due to reduced thermic effect.

         Flexible Copper Busbars and Flexible Aluminium Busbars consist of layers of high conductivity copper or aluminium foils that are bonded together at the mounting areas with heat and pressure but provide flexibility throughout the rest of the busbar. As the bond strength is achieved by pressure, temperature, time of contact, and cleanliness of the surface, the cycle time for diffusion bonding is usually longer. For better quality, efficiency, and faster turn-around time, Kingfine uses automated robots in our diffusion bonding cells.