Invention Grant
- Patent Title: Method for producing a piston
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Application No.: US15755061Application Date: 2016-08-15
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Publication No.: US10208702B2Publication Date: 2019-02-19
- Inventor: Udo Rotmann , Armin Wenzel , Juergen Friedrich
- Applicant: Mahle International GmbH
- Applicant Address: DE
- Assignee: Mahle International GmbH
- Current Assignee: Mahle International GmbH
- Current Assignee Address: DE
- Agency: Fishman Stewart PLLC
- Priority: DE102015216321 20150826
- International Application: PCT/EP2016/069319 WO 20160815
- International Announcement: WO2017/032624 WO 20170302
- Main IPC: F02F3/08
- IPC: F02F3/08 ; B21K1/18 ; B23P15/10 ; F16J1/00 ; B22D15/02 ; B22F3/11 ; F02F3/00

Abstract:
A method for producing a piston may include forming a piston blank in a first forming tool such that the piston blank surrounds a ring carrier configured to receive a piston ring via positive engagement after producing the ring carrier by a sintering process. The piston blank, at least in a circumferential region disposed at a piston head, may be composed of a light metal alloy suitable for forging. The method may also include removing the piston blank from the first forming tool and placing the piston blank in a second forming tool, and inserting a holding-down tool into the second forming tool to hold the ring carrier down. The method may further include pressing a final forming punch into the second forming tool to deform the piston blank and form a piston.
Public/Granted literature
- US20180252181A1 METHOD FOR PRODUCING A PISTON Public/Granted day:2018-09-06
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