Ukk Junction Box Internal Solder Joints: Reliable Connection Between Solder Wire And Contact Surface

The internal metal terminals of terminal power distribution block are soldered to the exposed metal surface using solder wire. The molten solder wire fills the contact point and then solidifies to form a metallurgical connection. Through wetting and spreading, the solder wire firmly adheres to the metal surface, establishing a stable conductive path.

The solder joint provides mechanical support and current conduction. A dense intermetallic compound layer forms between the solder and the copper or terminal metal surface, enhancing the structural integrity and conductive continuity of the single pole distribution block connection.

If the solder wire and the soldered surface are properly treated, and the alloy composition matches the heating curve, the heating temperature can fully activate the solder's fluidity, resulting in a uniform, smooth, and crack-free weld after cooling. This connection maintains conductivity and mechanical strength even under long-term use and environmental changes.