PIERCER PLUG AND MANUFACTURING METHOD THEREFOR

A piercer plug with increased life and a method of manufacturing it are provided. The piercer plug 1 includes a tip portion 2 and a trunk portion 3 made of the same material as the tip portion 2 and continuous to the tip portion 2. The trunk portion 3 includes a cylindrical portion 5 having a hole u...

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Bibliographische Detailangaben
Hauptverfasser: MIYAI, Tatsuya, HIDAKA, Yasuyoshi, HIGASHIDA, Yasuto, YAMANARI, Yuichi, YAMAMOTO, Yuji
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A piercer plug with increased life and a method of manufacturing it are provided. The piercer plug 1 includes a tip portion 2 and a trunk portion 3 made of the same material as the tip portion 2 and continuous to the tip portion 2. The trunk portion 3 includes a cylindrical portion 5 having a hole used for attaching a bar. The tip portion 2 is harder than the cylindrical portion 5.