The spun lamp housing is a lamp enclosure / reflector integrally formed through the metal spinning process. During production, the metal blank rotates at high speed with the mandrel, while the spinning roller applies localized and continuous pressure to the metal, causing plastic deformation and gradually forming rotating shapes such as cylindrical, conical, and parabolic surfaces.
Metal spinning is categorized into conventional spinning (only shaping with nearly unchanged wall thickness) and power spinning (wall thickness reduction with enhanced strength). In the lighting industry, conventional spinning is widely used to manufacture lamp housings and reflectors.