Frictional conditions between alloy AA6060 aluminium and tool steel
- Norwegian University of Science and Technology-Dept. of Engineering Design and Materials-Norway (Norway)
The frictional conditions in the new process of screw extrusion of aluminium have been investigated. The contact behaviour between the aluminum alloy and the tool steel in the extruder is vital for understanding the extrusion process. Using a compressive-rotational method for frictional measurements the conditions for unlubricated sticking friction between aluminum alloy AA6060 and tool steel at different combinations of temperatures and pressures have been investigated. In this method the samples in the form of disks are put under hydrostatic pressure while simultaneously being rotated at one end. Pins made from contrast material have been inserted into the samples to measure the deformation introduced. This approach along with 3D simulations form a method for determining the frictional conditions. The paper describes the test method and the results. It was found that the necessary pressure for sticking to occur between the aluminum AA6060 and the different parts of the extruder is heavily influenced by the temperature.
- OSTI ID:
- 21516746
- Journal Information:
- AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589773; (c) 2011 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
ALUMINIUM ALLOYS
DEFORMATION
EXTRUSION
FRICTION
HEAT TREATMENTS
SIMULATION
STEELS
TOOLS
ALLOYS
CARBON ADDITIONS
ELEMENTS
EQUIPMENT
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS WORKING
METALS
TRANSITION ELEMENT ALLOYS