| 摘要 |
PROBLEM TO BE SOLVED: To suppress damage caused by compressive load or pulling out load during sizing even in a small diameter core die, and eliminate use-restriction on a structural point.SOLUTION: A sizing core die comprises: an attachment part 2; and a main part 5 formed of hard metal. The main part 5 includes a columnar part 6 and a shaping part 7, and a lower end of the columnar part 6 is inserted into an attachment hole 3 provided on an upper surface of the attachment part 2 to be braze-joined. |
