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Analysis of Hot Isothermal Copper Extrusion for Multi-Channel Profiles

Barkley, Benjamin Z.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1366906081

Abstract Details

2013, Master of Science (MS), Ohio University, Mechanical Engineering (Engineering and Technology).
The primary focus of this thesis was to further development efforts on a process to produce copper multi-channel heat exchanger tube for high efficiency heat exchangers (such tube is not currently available commercially). The scope of the work involved experimental determination of parameters for an analytical extrusion model using UNS C12200 copper, the grade of copper typically used for these applications. Friction and redundant-work parameters for the extrusion model were determined from lab extrusion trials, which included two tube designs and an array of process conditions. The apparatus for the extrusion trials was also redesigned for this study. Flow stress of UNS C12200 copper was experimentally determined for process conditions involving strain rates of 1, 0.1, and 0.01 s-1 and temperatures of 700 and 750°C. These data were obtained via hot compression testing with an MTS® 810 test machine and Ameritherm 5kW induction heater. These data were used to determine material parameters for the classical Zener-Hollomon flow stress equation, and they were used in the extrusion model. Extrusion pressures calculated from the model were generally within 7% of the experimental data.
Frank Kraft (Advisor)
63 p.
Engineering; Experiments; Materials Science; Mechanical Engineering; Metallurgy
Hot Copper Extrusion; Multi-channel Profiles; Dual Billet Extrusion; Cu 122

Recommended Citations

Citations

  • Barkley, B. Z. (2013). Analysis of Hot Isothermal Copper Extrusion for Multi-Channel Profiles [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1366906081

    APA Style (7th edition)

  • Barkley, Benjamin. Analysis of Hot Isothermal Copper Extrusion for Multi-Channel Profiles. 2013. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1366906081.

    MLA Style (8th edition)

  • Barkley, Benjamin. "Analysis of Hot Isothermal Copper Extrusion for Multi-Channel Profiles." Master's thesis, Ohio University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1366906081

    Chicago Manual of Style (17th edition)

ohiou1366906081
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© 2013, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.