Invention Grant
US08943687B2 Method for the production of a piston for an internal combustion engine
有权
一种用于生产用于内燃机的活塞的方法
- Patent Title: Method for the production of a piston for an internal combustion engine
- Patent Title (中): 一种用于生产用于内燃机的活塞的方法
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Application No.: US13066559Application Date: 2011-04-18
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Publication No.: US08943687B2Publication Date: 2015-02-03
- Inventor: Rainer Scharp , Gerhard Berr , Sascha-Oliver Boczek , Reiner Mueller
- Applicant: Rainer Scharp , Gerhard Berr , Sascha-Oliver Boczek , Reiner Mueller
- Applicant Address: DE Stuttgart
- Assignee: MAHLE International GmbH
- Current Assignee: MAHLE International GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Collard & Roe, P.C.
- Priority: DE102011013141 20110304
- Main IPC: B23P15/10
- IPC: B23P15/10 ; B23K20/18 ; B22D19/00 ; B23P11/00 ; B21K1/18 ; F02F3/00
Abstract:
A method for the production of a piston made of steel, for an internal combustion engine, in which the upper piston part is produced using the forging method, and the lower piston part is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
Public/Granted literature
- US20120222305A1 Method for the production of a piston for an internal combustion engine Public/Granted day:2012-09-06
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