Invention Grant
- Patent Title: Molded material production method and molded material
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Application No.: US16078380Application Date: 2017-02-21
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Publication No.: US10894283B2Publication Date: 2021-01-19
- Inventor: Naofumi Nakamura , Yudai Yamamoto
- Applicant: Nisshin Steel Co. Ltd.
- Applicant Address: JP Tokyo
- Assignee: Nisshin Steel Co. Ltd.
- Current Assignee: Nisshin Steel Co. Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cook Alex Ltd.
- Priority: JP2016-033361 20160224
- International Application: PCT/JP2017/006364 WO 20170221
- International Announcement: WO2017/146045 WO 20170831
- Main IPC: B21D22/28
- IPC: B21D22/28 ; B21D22/21 ; B21D22/22 ; B21D24/02

Abstract:
Provided are: a method for producing a molded material comprising tubular body and a flange formed at an end portion of the body; and a molded material produced thereby, which can prevent the flange of the molded material becoming unnecessarily thick, avoid the generation of wrinkles and buckling, and allow weight reduction of the molded material and size reduction of a base metal sheet. When producing the molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, a first drawing process is carried out on a region corresponding to the body while opening a die and a drawing sleeve, and an ironing process is carried out on a region corresponding to the flange while keeping a constant interval of a mold gap between the die and the drawing sleeve.
Public/Granted literature
- US20190283101A1 MOLDED MATERIAL PRODUCTION METHOD AND MOLDED MATERIAL Public/Granted day:2019-09-19
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