Details
| Original language | English |
|---|---|
| Title of host publication | TMS 2014 - 143rd Annual Meeting and Exhibition, Supplemental Proceedings |
| Publisher | Minerals, Metals and Materials Society |
| Pages | 983-990 |
| Number of pages | 8 |
| ISBN (print) | 9781118889725 |
| Publication status | Published - 1 Jan 2014 |
| Event | 143rd Annual Meeting and Exhibition, TMS 2014 - San Diego, CA, United States Duration: 16 Feb 2014 → 20 Feb 2014 |
Publication series
| Name | TMS Annual Meeting |
|---|
Abstract
Hot stamping of automotive parts becomes increasingly important since the hot forming allows manufacturing of parts such as A-pillars with a high specific strength and stiffness. For processing, sheets of suited steels such as the heat treatable steel 22MnB5 are usually firstly austenized, transferred to the forming press, hot stamped and then quenched in the closed die. Cooling rates of at least about 27 K/s are necessary to form the desired martensitic microstructure during quenching. Due to the limited heat transfer to the forming die the cooling below the martensite finish temperature is slow and the process productivity is comparatively low. Regarding the demand for an increased productivity, hot stamped parts were early removed from the die and transferred to an external cooling device where the parts were quenched below the martensite finish temperature by means of a water-air-spray. Various removal temperatures were investigated, process conditions resulting in low distortions identified and mechanical properties characterized.
Keywords
- 22MnB5, Hot stamping, Process optimization, Spray cooling
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Materials Science(all)
- Metals and Alloys
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TMS 2014 - 143rd Annual Meeting and Exhibition, Supplemental Proceedings. Minerals, Metals and Materials Society, 2014. p. 983-990 (TMS Annual Meeting).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Spray cooling of early extracted hot stamped parts
AU - Nürnberger, Florian
AU - Diekamp, Max
AU - Moritz, Jörn
AU - Wolf, Lars
AU - Hübner, Sven
AU - Behrens, Bernd Arno
N1 - Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Hot stamping of automotive parts becomes increasingly important since the hot forming allows manufacturing of parts such as A-pillars with a high specific strength and stiffness. For processing, sheets of suited steels such as the heat treatable steel 22MnB5 are usually firstly austenized, transferred to the forming press, hot stamped and then quenched in the closed die. Cooling rates of at least about 27 K/s are necessary to form the desired martensitic microstructure during quenching. Due to the limited heat transfer to the forming die the cooling below the martensite finish temperature is slow and the process productivity is comparatively low. Regarding the demand for an increased productivity, hot stamped parts were early removed from the die and transferred to an external cooling device where the parts were quenched below the martensite finish temperature by means of a water-air-spray. Various removal temperatures were investigated, process conditions resulting in low distortions identified and mechanical properties characterized.
AB - Hot stamping of automotive parts becomes increasingly important since the hot forming allows manufacturing of parts such as A-pillars with a high specific strength and stiffness. For processing, sheets of suited steels such as the heat treatable steel 22MnB5 are usually firstly austenized, transferred to the forming press, hot stamped and then quenched in the closed die. Cooling rates of at least about 27 K/s are necessary to form the desired martensitic microstructure during quenching. Due to the limited heat transfer to the forming die the cooling below the martensite finish temperature is slow and the process productivity is comparatively low. Regarding the demand for an increased productivity, hot stamped parts were early removed from the die and transferred to an external cooling device where the parts were quenched below the martensite finish temperature by means of a water-air-spray. Various removal temperatures were investigated, process conditions resulting in low distortions identified and mechanical properties characterized.
KW - 22MnB5
KW - Hot stamping
KW - Process optimization
KW - Spray cooling
UR - http://www.scopus.com/inward/record.url?scp=84899767570&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-48237-8_116
DO - 10.1007/978-3-319-48237-8_116
M3 - Conference contribution
AN - SCOPUS:84899767570
SN - 9781118889725
T3 - TMS Annual Meeting
SP - 983
EP - 990
BT - TMS 2014 - 143rd Annual Meeting and Exhibition, Supplemental Proceedings
PB - Minerals, Metals and Materials Society
T2 - 143rd Annual Meeting and Exhibition, TMS 2014
Y2 - 16 February 2014 through 20 February 2014
ER -