Details
| Original language | English |
|---|---|
| Title of host publication | WGP Congress 2014 |
| Subtitle of host publication | Progress in Production Engineering |
| Editors | Marion Merklein, Hinnerk Hagenah, Jörg Franke |
| Pages | 341-348 |
| Number of pages | 8 |
| ISBN (electronic) | 9783038352457 |
| Publication status | Published - 9 Dec 2014 |
| Event | WGP Congress 2014 - Erlangen, Germany Duration: 9 Sept 2014 → 10 Sept 2014 |
Publication series
| Name | Advanced Materials Research |
|---|---|
| Volume | 1018 |
| ISSN (Print) | 1022-6680 |
| ISSN (electronic) | 1662-8985 |
Abstract
Hot forging dies are exposed to a combination of high mechanical and thermal load in each forging cycle leading to abrasive wear that is one of the most frequent causes of die failure. Due to the high difference in temperature between the dies and the workpiece the surface layer material of forging dies undergoes very high thermal shock loads. High temperatures, which occur in each cycle lead to material annealing and to a softening of the material in the surface layer. However, there are die regions, like convex radiuses, where the surface temperatures exceed the austenitizing temperature. In combination with high cooling rates martensitic structures with a high hardness are generated in these regions. Both, softening as well as hardening of the tool material have a great influence on the wear resistance of dies. Nowadays a prediction of the wear amount is possible by using Finite Element Method (FEM) in combination with wear models. The approach for hot forging processes provides an input of die hardness curves under cyclic thermal load. Only by calculating die wear using this hardness curve a good accuracy of the FE result with experimental investigations is possible. Therefore relevant tests of hot forging material under typical forging load should be designed, conducted and afterwards used in the FE based wear prediction for hot forging dies.
Keywords
- Hot forging, Thermal effects, Wear
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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WGP Congress 2014: Progress in Production Engineering. ed. / Marion Merklein; Hinnerk Hagenah; Jörg Franke. 2014. p. 341-348 (Advanced Materials Research; Vol. 1018).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Wear Prediction for Hot Forging Dies under Consideration of Structure Modification in the Surface Layer
AU - Klassen, Andreas
AU - Bouguecha, Anas
AU - Behrens, Bernd Arno
PY - 2014/12/9
Y1 - 2014/12/9
N2 - Hot forging dies are exposed to a combination of high mechanical and thermal load in each forging cycle leading to abrasive wear that is one of the most frequent causes of die failure. Due to the high difference in temperature between the dies and the workpiece the surface layer material of forging dies undergoes very high thermal shock loads. High temperatures, which occur in each cycle lead to material annealing and to a softening of the material in the surface layer. However, there are die regions, like convex radiuses, where the surface temperatures exceed the austenitizing temperature. In combination with high cooling rates martensitic structures with a high hardness are generated in these regions. Both, softening as well as hardening of the tool material have a great influence on the wear resistance of dies. Nowadays a prediction of the wear amount is possible by using Finite Element Method (FEM) in combination with wear models. The approach for hot forging processes provides an input of die hardness curves under cyclic thermal load. Only by calculating die wear using this hardness curve a good accuracy of the FE result with experimental investigations is possible. Therefore relevant tests of hot forging material under typical forging load should be designed, conducted and afterwards used in the FE based wear prediction for hot forging dies.
AB - Hot forging dies are exposed to a combination of high mechanical and thermal load in each forging cycle leading to abrasive wear that is one of the most frequent causes of die failure. Due to the high difference in temperature between the dies and the workpiece the surface layer material of forging dies undergoes very high thermal shock loads. High temperatures, which occur in each cycle lead to material annealing and to a softening of the material in the surface layer. However, there are die regions, like convex radiuses, where the surface temperatures exceed the austenitizing temperature. In combination with high cooling rates martensitic structures with a high hardness are generated in these regions. Both, softening as well as hardening of the tool material have a great influence on the wear resistance of dies. Nowadays a prediction of the wear amount is possible by using Finite Element Method (FEM) in combination with wear models. The approach for hot forging processes provides an input of die hardness curves under cyclic thermal load. Only by calculating die wear using this hardness curve a good accuracy of the FE result with experimental investigations is possible. Therefore relevant tests of hot forging material under typical forging load should be designed, conducted and afterwards used in the FE based wear prediction for hot forging dies.
KW - Hot forging
KW - Thermal effects
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=84912098974&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/amr.1018.341
DO - 10.4028/www.scientific.net/amr.1018.341
M3 - Conference contribution
AN - SCOPUS:84912098974
T3 - Advanced Materials Research
SP - 341
EP - 348
BT - WGP Congress 2014
A2 - Merklein, Marion
A2 - Hagenah, Hinnerk
A2 - Franke, Jörg
T2 - WGP Congress 2014
Y2 - 9 September 2014 through 10 September 2014
ER -