Details
| Original language | English |
|---|---|
| Pages (from-to) | 295-300 |
| Number of pages | 6 |
| Journal | Procedia Manufacturing |
| Volume | 47 |
| Publication status | Published - 26 Apr 2020 |
| Event | 23rd International Conference on Material Forming, ESAFORM 2020 - Cottbus, Germany Duration: 4 May 2020 → … |
Abstract
In hot forging processes, geometry of the formed workpieces deviate from the desired target geometry, due to complex interactions between tools and billets which result in inhomogeneous temperature and stress fields. The resulting deviation can only be mapped insufficiently by using numerical simulation which makes it difficult to be considered when designing the tool. Therefore, the development of forging tools requires an iterative adaptation process through a large number of revisions in the tool geometry, which escalates the resulting costs. To compensate the deviations and reduce the number of tool revisions, a holistic view of the influencing factors on the geometrical deviation is necessary. In order to address this issue, a hot forging process was developed, whose geometry is prone to high deviations, and a stress-based compensation model was applied. For this, forging experiments were carried out and a comparison was made between the actual geometry and the desired one by means of 3D coordinate measurements. The compensation methodology, which directly takes into account the complex 3D stress states during forming, allows to determine a compensating tool geometry. This opened up the possibility of validating the simulation results and testing a compensation model while eliminating deterministic deviations in hot forging processes.
Keywords
- Bulk forming, Deviation, Geometrical compensation, Numerical simulation
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
- Computer Science(all)
- Artificial Intelligence
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In: Procedia Manufacturing, Vol. 47, 26.04.2020, p. 295-300.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - A Combined Numerical and Experimental Investigation on Deterministic Deviations in Hot Forging Processes
AU - Behrens, Bernd Arno
AU - Volk, Wolfram
AU - Maier, Daniel
AU - Scandola, Lorenzo
AU - Ott, Michael
AU - Brunotte, Kai
AU - Büdenbender, Christoph
AU - Till, Michael
PY - 2020/4/26
Y1 - 2020/4/26
N2 - In hot forging processes, geometry of the formed workpieces deviate from the desired target geometry, due to complex interactions between tools and billets which result in inhomogeneous temperature and stress fields. The resulting deviation can only be mapped insufficiently by using numerical simulation which makes it difficult to be considered when designing the tool. Therefore, the development of forging tools requires an iterative adaptation process through a large number of revisions in the tool geometry, which escalates the resulting costs. To compensate the deviations and reduce the number of tool revisions, a holistic view of the influencing factors on the geometrical deviation is necessary. In order to address this issue, a hot forging process was developed, whose geometry is prone to high deviations, and a stress-based compensation model was applied. For this, forging experiments were carried out and a comparison was made between the actual geometry and the desired one by means of 3D coordinate measurements. The compensation methodology, which directly takes into account the complex 3D stress states during forming, allows to determine a compensating tool geometry. This opened up the possibility of validating the simulation results and testing a compensation model while eliminating deterministic deviations in hot forging processes.
AB - In hot forging processes, geometry of the formed workpieces deviate from the desired target geometry, due to complex interactions between tools and billets which result in inhomogeneous temperature and stress fields. The resulting deviation can only be mapped insufficiently by using numerical simulation which makes it difficult to be considered when designing the tool. Therefore, the development of forging tools requires an iterative adaptation process through a large number of revisions in the tool geometry, which escalates the resulting costs. To compensate the deviations and reduce the number of tool revisions, a holistic view of the influencing factors on the geometrical deviation is necessary. In order to address this issue, a hot forging process was developed, whose geometry is prone to high deviations, and a stress-based compensation model was applied. For this, forging experiments were carried out and a comparison was made between the actual geometry and the desired one by means of 3D coordinate measurements. The compensation methodology, which directly takes into account the complex 3D stress states during forming, allows to determine a compensating tool geometry. This opened up the possibility of validating the simulation results and testing a compensation model while eliminating deterministic deviations in hot forging processes.
KW - Bulk forming
KW - Deviation
KW - Geometrical compensation
KW - Numerical simulation
UR - http://www.scopus.com/inward/record.url?scp=85085520012&partnerID=8YFLogxK
U2 - 10.1016/j.promfg.2020.04.231
DO - 10.1016/j.promfg.2020.04.231
M3 - Conference article
AN - SCOPUS:85085520012
VL - 47
SP - 295
EP - 300
JO - Procedia Manufacturing
JF - Procedia Manufacturing
SN - 2351-9789
T2 - 23rd International Conference on Material Forming, ESAFORM 2020
Y2 - 4 May 2020
ER -