Frictional Condition Evaluation in Hot Magnesium Forming Using T-shape and Ring Compression Tests

Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

ICME12_026

تاریخ نمایه سازی: 25 شهریور 1392

Abstract:

T-shape compression test is a newly introduced friction test for evaluation of frictional condition in metal forming processes. This test includes large surface expansion and high contact pressure within the contact surfaces, similar to what is occurred during a real forming operation. Therefore the resulted friction factors are reliable and applicable. One of the friction tests which widely used for evaluation of frictional conditions in forming operations is the ring compression test. This test is very simple and does not require manufacturing a specific die. In the present research, the frictional conditions of hot magnesium forming were studied experimentally using the ring and T-shape compression tests. The tests were conducted in the same temperature and ram velocity. Three different lubrication conditions and two different die geometries of the T-shape tests were used. Finally the resulted friction factors, surface expansion ratio and maximum contact pressure in these tests were compared.

Authors

S.M. Pezeshki

Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran

H Badnava

Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran

F. Fereshteh-Saniee

Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran

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