Distribution & Access For Publication Downloads News About Us Contact Us
Paper Titles
Tribological and Thermal Behavior of Laser Implanted Tool Surfaces for Hot Stamping AlSi Coated 22MnB5 Sheets
p.69
Characterization of an Environmentally Friendly Tribological System for Deep Drawing Using Volatile Media as Lubricant Substitute
p.75
An Investigation into the Influence of Interrupted Loading in Improving the Stretch-Flangeability of Dual Phase Steel
p.81
Optimization of the Surface Geometry in Structured Cold Rolling for Interlocking of Formed and Die-Cast Metal Components
p.89
Challenges in Tribometry for Warm and Hot Sheet Metal Forming of High Strength Aluminum with Tool Lubrication
p.95
Effect of Friction Modelling on Damage Prediction in Deep Drawing Simulations of Rotationally Symmetric Cups
p.103
Tribological Characteristics of Dual-Pressure Tube Hydroforming
p.111
Identifying Heterogeneous Friction Coefficients on the Hot Forming Tools in Mannesmann Cross-Roll Piercing
p.117
Tribological Behavior of High-Strength Aluminum Alloys in Combination with Dry Lubricants at High Forming Temperatures
p.125

Challenges in Tribometry for Warm and Hot Sheet Metal Forming of High Strength Aluminum with Tool Lubrication

Article Preview

Abstract:

For conventional sheet metal forming at room temperature, numerous tribometers were developed in the 20th century. At the present state of the art, unsolved issues for tribometry remain for temperature-supported forming processes of high strength aluminum (e.g. EN AW-7075), in which the sheet is heated to temperatures between 200 and 480 °C. The tribological design of these processes remains a major challenge, which needs to be addressed by investigations with adapted tribometers. In this study, a recently adapted strip drawing test for aluminum warm and hot forming is presented – including a newly developed strip heating unit, a die lubrication system and a die tempering system for efficient tribological testing. The contribution is completed with both, experimental results and a numerical investigation of temperature gradients in the strip drawing test. Finally, it is discussed whether transient process conditions of non-isothermal forming processes with die lubrication should be considered in tribometers for warm and hot sheet metal forming.

You might also be interested in these eBooks
Tribology in Manufacturing Processes View Preview

Info:

Periodical:

Defect and Diffusion Forum (Volume 414)

Pages:

95-102

DOI:

https://doi.org/10.4028/p-lq0q96

Citation:

Cite this paper

Online since:

February 2022

Authors:

Lukas Schell*, Peter Groche

Keywords:

Aluminum, Hot Forming, Strip Drawing Test, Tribometry

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] Filzek J, Ludwig M, Groche P. Improved FEM simulation of sheet metal forming with friction modelling using laboratory tests. Proceedings of the IDDRG, Bilbao, Spain 2011:5–8.

Google Scholar

[2] Trzepiecinski T, Lemu HG. Recent Developments and Trends in the Friction Testing for Conventional Sheet Metal Forming and Incremental Sheet Forming. Metals 2020;10(1):47. https://doi.org/10.3390/met10010047.

DOI: 10.3390/met10010047

Google Scholar

[3] Reihle M. Verhalten des Gleitreibungskoeffizienten von Tiefziehblechen bei hohen Flächenpressungen: Dissertation. Stuttgart: Technische Hochschule Stuttgart; (1959).

Google Scholar

[4] Witthüser K-P. Untersuchung von Prüfverfahren zur Beurteilung der Reibungsverhältnisse beim Tiefziehen: Dissertation. Hannover: Universität Hannover; (1980).

Google Scholar

[5] Frontzek H. Beitrag zur Bestimmung der Reibungsverhältnisse in der Blechumformung: Berichte über Fertigungsforschung [Dissertation]. Darmstadt: Technische Hochschule Darmstadt; (1990).

Google Scholar

[6] Netsch T. Methode zur Ermittlung von Reibmodellen für die Blechumformung. Zugl.: Darmstadt, Techn. Hochsch., Diss., 1995. Aachen: Shaker; (1995).

Google Scholar

[7] Sniekers RR. Friction in deep drawing: Dissertation. Technische Universiteit Eindhoven; (1996).

Google Scholar

[8] Emmens W. Tribology of flat contacts and its application in deep drawing: Dissertation. Twente: University of Twente; (1997).

Google Scholar

[9] Filzek J. Kombinierte Prüfmethode für das Reib-, Verschleiß- und Abriebverhalten beim Tief- und Streckziehen. Zugl.: Darmstadt, Techn. Univ., Diss., 2004. Aachen: Shaker; (2004).

Google Scholar

[10] Zheng K, Politis DJ, Wang L, Lin J. A review on forming techniques for manufacturing lightweight complex—shaped aluminium panel components. International Journal of Lightweight Materials and Manufacture 2018; 1(2): 55–80. https://doi.org/10.1016/j.ijlmm. 2018.03.006.

DOI: 10.1016/j.ijlmm.2018.03.006

Google Scholar

[11] Anyasodor G, Koroschetz C. Mass production-line and process route to enable the use of high strength aluminium alloy materials in car body engineering. IOP Conf. Ser.: Mater. Sci. Eng. 2018;418:12023. https://doi.org/10.1088/1757-899X/418/1/012023.

DOI: 10.1088/1757-899x/418/1/012023

Google Scholar

[12] Grohmann T. Forming of AMAG 7xxx Series Aluminium Sheet Alloys. AMAG rolling GmbH; (2016).

Google Scholar

[13] Ma W, Wang B-Y, Fu L, Zhou J, Huang M. Effect of friction coefficient in deep drawing of AA6111 sheet at elevated temperatures. Transactions of Nonferrous Metals Society of China 2015;25(7):2342–51. https://doi.org/10.1016/S1003-6326(15)63849-3.

DOI: 10.1016/s1003-6326(15)63849-3

Google Scholar

[14] Staeves J. Beurteilung der Topografie von Blechen im Hinblick auf die Reibung bei der Umformung. Zugl.: Darmstadt, Techn. Univ., Diss., 1998. Aachen: Shaker; (1998).

Google Scholar

[15] Bay N, Ceron E. Off-Line Testing of Tribo-Systems for Sheet Metal Forming Production. AMR 2014;966-967:3–20. https://doi.org/10.4028/www.scientific.net/AMR.966-967.3.

DOI: 10.4028/www.scientific.net/amr.966-967.3

Google Scholar

[16] Geiger M, Merklein M, Lechler J. Determination of tribological conditions within hot stamping. Prod. Eng. Res. Devel. 2008;2(3):269–76. https://doi.org/10.1007/s11740-008-0110-8.

DOI: 10.1007/s11740-008-0110-8

Google Scholar

[17] Merklein M, Degner J. Fertigung hochfester Aluminiumbauteile durch Umformen unter Abschreckbedingungen. Hannover: Europäische Forschungsgesellschaft für Blechverarbeitung e.V; (2018).

Google Scholar

[18] Ostermann F. Anwendungstechnologie Aluminium. Berlin, Heidelberg: Springer Berlin Heidelberg; (2014).

Google Scholar

[19] Degner J. Grundlegende Untersuchungen zur Herstellung hochfester Aluminiumblechbauteile in einem kombinierten Umform- und Abschreckprozess: FAU University Press; (2020).

Google Scholar

[20] Liu X, Ji K, Fakir OE, Fang H, Gharbi MM, Wang L. Determination of the interfacial heat transfer coefficient for a hot aluminium stamping process. Journal of Materials Processing Technology 2017;247:158–70. https://doi.org/10.1016/j.jmatprotec.2017.04.005.

DOI: 10.1016/j.jmatprotec.2017.04.005

Google Scholar

[21] Xiao W, Wang B, Zheng K, Zhou J, Lin J. A study of interfacial heat transfer and its effect on quenching when hot stamping AA7075. Archives of Civil and Mechanical Engineering 2018;18(3):723–30. https://doi.org/10.1016/j.acme.2017.12.001.

DOI: 10.1016/j.acme.2017.12.001

Google Scholar

[22] Degner J, Horn A, Merklein M. Experimental study on the warm forming and quenching behavior for hot stamping of high-strength aluminum alloys. J. Phys.: Conf. Ser. 2017;896:12055. https://doi.org/10.1088/1742-6596/896/1/012055.

DOI: 10.1088/1742-6596/896/1/012055

Google Scholar

[23] Dohda K, Boher C, Rezai-Aria F, Mahayotsanun N. Tribology in metal forming at elevated temperatures. Friction 2015;3(1):1–27. https://doi.org/10.1007/s40544-015-0077-3.

DOI: 10.1007/s40544-015-0077-3

Google Scholar

[24] Schell L, Groche P. In Search of the Perfect Sheet Metal Forming Tribometer. In: Daehn G, Cao J, Kinsey B, Tekkaya E, Vivek A, Yoshida Y, editors. Forming the Future. Cham: Springer International Publishing; 2021, p.81–96.

DOI: 10.1007/978-3-030-75381-8_7

Google Scholar

[25] VDA - Verband der Automobilindustrie e.V. VDA 230-213: Prüfverfahren für die Produktklassen Prelube, Prelube 2, Hotmelt, Spot lubricant. Frankfurt; (2008).

Google Scholar

[26] Mendiguren J, Argandona ES de, Galdos L. Hot stamping of AA7075 aluminum sheets. IOP Conf. Ser.: Mater. Sci. Eng. 2016;159:12026. https://doi.org/10.1088/1757-899X/159/1/012026.

DOI: 10.1088/1757-899x/159/1/012026

Google Scholar

[27] Zheng K, Dong Y, Dong H, Fernandez J, Dean TA. Investigation of the lubrication performance using WC: C coated tool surfaces for hot stamping AA6082. Procedia Engineering 2017; 207: 711–6. https://doi.org/10.1016/j.proeng.2017.10.1046.

DOI: 10.1016/j.proeng.2017.10.1046

Google Scholar

[28] Liu Y, Zhu Z, Wang Z, Zhu B, Wang Y, Zhang Y. Formability and lubrication of a B-pillar in hot stamping with 6061 and 7075 aluminum alloy sheets. Procedia Engineering 2017;207:723–8. https://doi.org/10.1016/j.proeng.2017.10.819.

DOI: 10.1016/j.proeng.2017.10.819

Google Scholar

[29] Myrold B, Jensrud O, Snilsberg KE. The Influence of Quench Interruption and Direct Artificial Aging on the Hardening Response in AA6082 during Hot Deformation and In-Die Quenching. Metals 2020;10(7):935. https://doi.org/10.3390/met10070935.

DOI: 10.3390/met10070935

Google Scholar

[30] Waanders D, Marangalou JH, Kott M, Gastebois S, Hol J. Temperature Dependent Friction Modelling: The Influence of Temperature on Product Quality. Procedia Manufacturing 2020; 47: 535–40. https://doi.org/10.1016/j.promfg.2020.04.159.

DOI: 10.1016/j.promfg.2020.04.159

Google Scholar

Scientific.Net is a registered brand of Trans Tech Publications Ltd
© 2024 by Trans Tech Publications Ltd. All Rights Reserved