Influence of the cross section area reduction in cross wedge rolling on the multi-directional forging of crankshafts

authored by

Neelam Rasche, Malte Stonis, Bernd Arno Behrens

Abstract

Low energy demand and fast processing time are required in each industrial process for the production of crankshafts. A crankshaft is a part of combustion engines. It has a very complex geometry and is forged with a high percentage of flash compared to other forging parts. Recent research showed the feasibility of a flashless forging of crankshafts. One way to forge a flashless crankshaft within three steps, is to use cross wedge rolling, multi-directional forging and final forging. This paper presents the investigation results of the influence of the cross section area reduction in cross wedge rolling on different parameters at multi-directional forging. First the state of research, the process development and tool design of cross wedge rolling and multi-directional forging will be described. Then the parameter field study will be presented and the influence of the cross section area reduction on flash, billet temperature, forming degree, forming forces and stress will be shown. Generally, flash develops because a rotation-symmetric billet is forced into an asymmetric movement. The least amount of flash develops at high cross section area reductions (>40%).

Organisation(s)

Institute of Metal Forming and Metal Forming Machines

External Organisation(s)

Institut für integrierte Produktion Hannover (IPH)

Type

Article

Journal

Advances in Materials and Processing Technologies

Volume

3

Pages

286-299

No. of pages

14

ISSN

2374-068X

Publication date

14.07.2017

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Materials Science, Industrial and Manufacturing Engineering, Mechanics of Materials

Electronic version(s)

https://doi.org/10.1080/2374068x.2017.1328151 (Access: Closed)

 

Details in the research portal "Research@Leibniz University"