MANUFACTURING METHOD OF CERAMIC HEATER-TYPE GLOW PLUG, AND CERAMIC HEATER-TYPE GLOW PLUG
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United States of America Patent
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Feb 9, 2017
app pub date -
Apr 3, 2015
filing date -
Apr 24, 2014
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Abstract
A manufacturing method of a ceramic heater-type glow plug including: a ceramic heater; and a metallic outer cylinder, one end of which holds the ceramic heater and the other end of which is fixed to a housing has: a step of forming a metallized layer on at least a portion of a surface region in the ceramic heater that is held by the outer cylinder; a step of press-inserting at least the metallized layer of the ceramic heater in the outer cylinder; and a step of heating the ceramic heater and the outer cylinder at a temperature at which a material for forming the metallized layer becomes a semi-molten state and performing joining by mass transfer between the outer cylinder and a solid layer of the metallized layer.
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