Since 1966, Norstan has served as an industry-leading manufacturer of precision electrical contacts in short and long production runs. Equipped with an ISO 9001 registered manufacturing facility, our experts produce components from highly conductive materials—such as silver, palladium, copper, gold, and brass—for use in almost every type of electromechanical device. Depending on the part and production specifications, we employ both resistance welding and resistance brazing to manufacture the part as needed.
Similar to resistance welding, resistance brazing employs heat to bond materials with high electrical conductivity. As indicated by its name, the process uses the principle of resistance to generate the heat necessary for its operations; as electrical current flows through a circuit that includes a workpiece, the circuit’s resistance produces heat.
Like resistance welding and other welding methods, resistance brazing requires specialized equipment—typically a transformer, electrodes, and a pressure source. Its key distinction is that it involves the use of additional brazing material to join parts together.
A resistance brazing operation typically includes the following stages:
As resistance brazing involves the use of a torch flame and close proximity to potentially hazardous fumes, proper safety precautions must be taken to prevent employee injuries. There are a number of steps we may take to create a safe work environment, including:
Compared to other welding methods, resistance brazing offers several advantages. For example, in contrast to traditional spot welding, resistance brazing provides the following:
While resistance brazing offers many advantages, it may not be the right choice for every application. Due to the use of localized heating, workpieces are susceptible to distortion. Brazing materials also need to have low melting points, as the workpiece is made of highly conductive materials. Additionally, the process is not ideal for large joint areas; it is more practical for use on smaller joints.
While not ideal in every scenario, resistance brazing does benefit many manufacturing applications due to its:
The resistance brazing process offers several advantages that make it suitable for creating a wide range of products. By leveraging the power of resistance brazing, the Norstan team is able to produce precision electrical contacts ideal for use in all types of electromechanical devices. To learn more about our resistance brazing capabilities or to submit a request for a custom metal product, contact us today.