Brazing Processing
In modern industrial products, many components need to be securely joined together to form a permanent whole capable of withstanding mechanical loads, drastic temperature changes, and media pressure. For these high-strength and high-sealing connections, rod welding offers a near-perfect solution. It is a solid-liquid coexistence phase joining technology that melts specially formulated rod-shaped solder (with a melting point lower than the base material) through precisely controlled heating, while keeping the base material itself in a solid state.
The underlying science is crucial: capillary action. The molten solder, like water being drawn into tiny towel fibers, is automatically and uniformly drawn into carefully designed, micron-sized joint gaps. When the heat source is removed, the solder cools and solidifies, forming a dense, uniform, and smooth metallurgical bond layer at the joint. This bond layer typically achieves strength equal to or even exceeding that of the base material itself and possesses excellent fatigue toughness and corrosion resistance.
To achieve high-quality rod welding, we exercise extremely precise control over the heating temperature and heat distribution. If the temperature is too low, the solder lacks fluidity and cannot fill the gaps, resulting in a cold solder joint; if the temperature is too high, it may damage the base material or cause the solder to oxidize. Our automated rod welding equipment ensures that heat is applied precisely and evenly throughout the welding area. The resulting connection can easily withstand the vibration, thermal cycling, and high-pressure conditions experienced by the equipment during long-term operation. Whether used in complex piping of refrigeration systems or in heat dissipation units of power systems, rod welding ensures that the connection point will not become a weak point in the product. Therefore, it is one of the key processes for achieving high reliability, high durability, and long-term maintenance-free operation of products, providing a core guarantee for the structural integrity and functional stability of products in harsh environments.
