| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a ceramic heater with good durability having an insulation base and a heating element resistor embedded in the insulation base, and a method for manufacturing a glow plug having the ceramic heater. <P>SOLUTION: A method comprises: a semi-molded body forming step of forming a first molded body 30 serving as a part of an insulation base 10 by baking and the semi-molded body 34 having an unbaked heating element resistor 33 serving as a heating element resistor 11 by baking; and a second molded body forming step of molding a second molded body 35 integrally with the semi-molded body 34, serving as a residue of the insulation base 10 by baking. A part of an unbaked bent-back part 32 of the unbaked heating element resistor 33 is embedded in the first molded body 30, while the residue projects from the first molded body 30. In the semi-molded body forming step, the semi-molded body 34 is formed so that at least either one of an inner angle θi between the unbaked bent-back 32 and an inner part 52 of the molded body and an outer angle θo between the unbaked bent-back 32 and an outer part 55 of the molded body, is larger than 90°. <P>COPYRIGHT: (C)2013,JPO&INPIT |
