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- Title
Cooling Rate of Hot Stamping Dies by Constructed Cooling Temperature Trend Model.
- Authors
Zhang, Yuhang; Wu, Riming; Min, Na; Chen, Meng; Li, Wei
- Abstract
Cooling rate at core site (Rc, °C/s) of hot stamping die components affects the life cycle in use. To achieve accurate prediction of Rcs of Cr-Mo-V-W steels in dependence of tungsten content (w%), working temperature Ti and surface temperature Ts, we carried out real-time detection of the temperature of Cr-Mo-V-W steel cylinders cooling in quenching sand. Cr-Mo-V-W die steel with 1.5% of tungsten had the highest heat conductivity in working temperature range from 200°C to 600°C, and it was ascribed to tungsten reducing the interstitial atoms in matrix and improving the heat conductivity. A cooling temperature trend (CTT) model was constructed. Compared with the modified Fourier model, the CTT model can predict the Rc of Cr-Mo-V-W steels more precisely.
- Subjects
FOIL stamping; THERMAL conductivity; LIFE cycles (Biology); SURFACE temperature; TUNGSTEN
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2023, Vol 75, Issue 12, p5198
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-023-05955-8