Brush Seal Manufacturing Process

The manufacturing process for brush seals primarily comprises steps such as brush filament drawing and heat treatment, tow fabrication, filament insertion, brush ring welding and heat treatment, brush ring hole machining, and track coating. Due to the inherent complexity of these processing operations-compounded by technological embargoes imposed by foreign nations-the actual manufacturing of brush seals has long remained a significant hurdle in the broader adoption and promotion of this technology.

One specific manufacturing technique involves first fabricating a straight brush seal assembly, which is subsequently roll-formed into a curved shape; this method is particularly well-suited for mass production. This process dispenses with the traditional filament-alignment templates in favor of an automated filament-winding technique, thereby helping to reduce the physical strain on workers while simultaneously enhancing the uniformity, precision, and overall efficiency of the filament arrangement process.