Plant using gas heated high temperature infra-red conveyor units is installed at works of Champion Sparking Plug Co; it is used for firing red printing ink into white blaze of sillimanite cores of spark plugs for which it is necessary to heat core to temperature of between 650-700 C to cause ink to flow into glaze and become permanent. (See also Aircraft Production v 7 n 83 Sept 1945 p 411-2; Engineering v 160 n 4153 Aug 17 1945 p 127-8)
Sparking-plug heating tunnel
Automobile Engr
Automobile Engineer ; 35 , n 465
1945
2 pages
Article (Journal)
English
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