Infrared radiation source

Abstract

Abstract An infrared radiation source comprising a nickel-chromium alloy wire having an oxidized surface and being helically coiled around a stainless steel threaded core which functions as a heat ballast. The source is manufactured by wrapping the wire around the core in a threaded groove to form a helical coil with separated turns; unscrewing the core from the coil; forming an oxide coating on the wire by holding the coil in an oxidizing environment and heating the coil by passing electric current through the wire; and, while forming an oxide coating on the wire, screwing the core onto the coil until all the turns thereof are engaged around the core.

Inventors

• 👤 J Martin

Bibliographic Details