Experimental characterization of heat transfer coefficients for hot stamping AA7075 sheets with an air gap

• Autorzy: Xiao Wenchao , Zheng Kailun , Wang Baoyu , Yang Xiaoming

Identyfikatory

DOI

10.1007/s43452-020-00091-5

• Języki publikacji: EN

Abstrakty

EN

The heat transfer coefficient (HTC) is critical for hot stamping and in-die quenching. The air gap at interface is a dominant factor affecting the HTC, which is normally resulted from initial tooling clearance and thinning of deformed aluminum sheet. To precisely determine the HTCs under different air gaps, this research performed a comprehensive investigation on determining HTCs between an AA7075 blank and H13 tool steel. Hot stamping experiments were performed with different air gaps enabling HTC values were determined. Using the experimentally calibrated HTC, a finite-element model for hot stamping a door beam was established, which was successfully verified using the experimentation. The good predictions showed the reliability of the HTC values under different air gap conditions.

Słowa kluczowe

EN

hot stamping; AA7075; heat transfer coefficient; air gap

PL

tłoczenie na gorąco; przenikanie ciepła; szczelina powietrzna

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 3
• Strony: 429--438
• Opis fizyczny: Bibliogr. 24 poz., rys., wykr.

Twórcy

autor

Xiao Wenchao

• School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China

autor

Zheng Kailun

• School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China

autor

Wang Baoyu

• School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
• Beijing Key Laboratory of Metal Lightweight Forming Manufacturing, Beijing 100083, China

autor

Yang Xiaoming

• School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)