Numerical optimization of die geometry in open die forging

Peter Christiansen; Jesper Henri Hattel; Niels Bay; Paulo A.F.  Martins

Numerical optimization of die geometry in open die forging

Peter Christiansen
, Jesper Henri Hattel
, Niels Bay
, Paulo A.F. Martins

Instituto Superior Técnico

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure of a centreline hole in a single compression operation. Friction is also taken into account.
The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle.

Original language	English
Title of host publication	Proceedings of International Conference on Advanced Manufacturing Engineering and Technologies (NEWTECH 2013)
Number of pages	10
Publisher	Kungl. Tekniska högskolan I Stockholm
Publication date	2013
Publication status	Published - 2013
Event	NEWTECH 2013 International Conference on Advanced Manufacturing Engineering and Technologies - Stockholm, Sweden Duration: 27 Oct 2013 → 30 Oct 2013

Conference

Conference	NEWTECH 2013 International Conference on Advanced Manufacturing Engineering and Technologies
Country/Territory	Sweden
City	Stockholm
Period	27/10/2013 → 30/10/2013

Keywords

Ingot forging
Centreline porosity closure
Numerical simulation
Die design

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@inproceedings{9d7a5784fe0243ba91e6619014713e89,

title = "Numerical optimization of die geometry in open die forging",

abstract = "This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure of a centreline hole in a single compression operation. Friction is also taken into account. The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle.",

keywords = "Ingot forging, Centreline porosity closure, Numerical simulation, Die design",

author = "Peter Christiansen and Hattel, \{Jesper Henri\} and Niels Bay and Martins, \{Paulo A.F.\}",

year = "2013",

language = "English",

booktitle = "Proceedings of International Conference on Advanced Manufacturing Engineering and Technologies (NEWTECH 2013)",

publisher = "Kungl. Tekniska h{\"o}gskolan I Stockholm",

note = "NEWTECH 2013 International Conference on Advanced Manufacturing Engineering and Technologies ; Conference date: 27-10-2013 Through 30-10-2013",

}

Christiansen, P, Hattel, JH , Bay, N & Martins, PAF 2013, Numerical optimization of die geometry in open die forging. in Proceedings of International Conference on Advanced Manufacturing Engineering and Technologies (NEWTECH 2013). Kungl. Tekniska högskolan I Stockholm, NEWTECH 2013 International Conference on Advanced Manufacturing Engineering and Technologies, Stockholm, Sweden, 27/10/2013.

Numerical optimization of die geometry in open die forging. / Christiansen, Peter; Hattel, Jesper Henri ; Bay, Niels et al.
Proceedings of International Conference on Advanced Manufacturing Engineering and Technologies (NEWTECH 2013). Kungl. Tekniska högskolan I Stockholm, 2013.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Numerical optimization of die geometry in open die forging

AU - Christiansen, Peter

AU - Hattel, Jesper Henri

AU - Bay, Niels

AU - Martins, Paulo A.F.

PY - 2013

Y1 - 2013

N2 - This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure of a centreline hole in a single compression operation. Friction is also taken into account. The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle.

AB - This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure of a centreline hole in a single compression operation. Friction is also taken into account. The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle.

KW - Ingot forging

KW - Centreline porosity closure

KW - Numerical simulation

KW - Die design

M3 - Article in proceedings

BT - Proceedings of International Conference on Advanced Manufacturing Engineering and Technologies (NEWTECH 2013)

PB - Kungl. Tekniska högskolan I Stockholm

T2 - NEWTECH 2013 International Conference on Advanced Manufacturing Engineering and Technologies

Y2 - 27 October 2013 through 30 October 2013

ER -

Numerical optimization of die geometry in open die forging

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