By Pradip Saha
Offers a finished creation to the explosion of data that has develop into to be had within the box of aluminum extrusion know-how over the last fifteen or two decades. DLC: Aluminum--Extrusion.
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Extra info for Aluminum extrusion technology
Ref 24) developed a noncontact eddy-current system to measure both temperature and the cross-sectional area of aluminum extrusion exiting the die. Temperatures near 1000 °F (538 °C) were measured within ±10 °F (±5 °C). The system could measure average internal temperatures of the solid round, solid square, and hollow square cross sections. This system could operate on eddy-current principles rather than infrared radiation as the more common optical pyrometers do. Since the eddy currents were generated in the product and made to penetrate below the surfaces, the temperature measured by the system was the average of the radial temperature profile from the surface to the depth of penetration.
Yamasaki, and N. Ohneda, Extrusion Conditions and Metal Flow To Minimize Both Distortion and Variance of CrossSectional Shape, Proc. Fifth International Aluminum Extrusion Technology Seminar, 1992 21. K. S. thesis, University of Calcutta, India, 1977 22. K. K. Ghosh, Temperature Distribution During Hot Extrusion of Aluminum—Theoretical Evaluation, Indian J. , Vol 17, 1979 23. K. Saha, Influence of Plastic Strain and Strain Rate on Temperature Rise in Aluminum Extrusion, Proc. , May 1996 24. K. Saha, Factors Affecting Speed and Pressure in 6063 Aluminum Extrusion, Proc.
They included the temperature dependencies of the flow stress and of the thermal constants of the billet 30 / Aluminum Extrusion Technology and the tool materials into the analysis. The researchers considered both cooling of the billet in air and heat conduction between the billet and the container before extrusion started. They studied the effects of several factors, such as materials properties, friction conditions, ram velocity, extrusion ratio, and die geometry. Castle and Sheppard (Ref 7) developed an equation that predicts temperature rise as a function of several variables, one of which is ram speed.
Aluminum extrusion technology by Pradip Saha