| 摘要 |
PROBLEM TO BE SOLVED: To provide an iron bit that is free from deterioration due to a long use and that has less variance in soldering quantity. SOLUTION: The iron bit is a columnar body 1 formed with a carbon based material such as graphite; this material is exposed at least at the tip end 1a so as to serve as an applying face, which is designed to release heat received at the rear end side of the columnar body. The columnar body 1 is composed of a laminated body for which a graphite sheet 2, for example, is rolled to form lamination. |
