Aluminum Science and Technology
Extrusion can be cold or hot, depending on the alloy and the method used. This article focuses on the direct hot extrusion and describes a typical sequence of operations for the direct extrusion of a solid section. It discusses the key variables of extrusion process, including extrusion speed and extrusion exit temperature. The article reviews the classification of extrusion presses: direct, direct for seamless hollow, and indirect. The functions of the press dies and tooling are presented in a table. The article discusses the extrusion of soft and medium-grade alloys, hard alloys, and aluminum-matrix composites. It reviews common aluminum extrusion defects, including surface defects, blisters, and internal cracking. The article concludes with a discussion on the drawing of solid section and aluminum tube.
Pradip Saha, Extrusion and Drawing of Aluminum Alloys, Aluminum Science and Technology, Vol 2A, ASM Handbook, Edited By Kevin Anderson, FASM, John Weritz, J. Gilbert Kaufman, FASM, ASM International, 2018, p 293–310, https://doi.org/10.31399/asm.hb.v02a.a0006534
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