| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an improved method for forming a glow plug, and in particular a heating element portion of a glow plug using specialty materials which results in a precision formed, durable monolithic structure. <P>SOLUTION: The method for forming a layered heating element for a glow plug includes: a step of pre-forming an electrically conductive core 48; a step of pre-forming an electrically non-conducting insulator layer 50 having an exterior; a step of pre-forming an electrically resistive layer 52; a step of assembling a precursor structure by substantially enveloping the core within the insulator layer and applying the resistive layer to the exterior of the insulator layer; a step of compressing the precursor structure; and a step of sintering the compressed precursor structure to form a monolithic heating element with the core bonded to the insulator layer and the insulator layer bonded to the resistive layer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
