Solid Welding Conditions for Seam and Hollow Extrusion Process of 7075 Aluminum Alloy

Quang Cherng Hsu; Kun Hong Kuo; Chi Peng Hsu

doi:10.4028/www.scientific.net/KEM.479.62

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Microstructure Evolution of a Fine Grain Al-50wt%Si Alloy Fabricated by High Energy Milling
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Solid Welding Conditions for Seam and Hollow Extrusion Process of 7075 Aluminum Alloy
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Effect of Activated TIG Flux on Performance of Dissimilar Welds between Mild Steel and Stainless Steel
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 479Solid Welding Conditions for Seam and Hollow...

Solid Welding Conditions for Seam and Hollow Extrusion Process of 7075 Aluminum Alloy

Abstract:

Direct extrusion by porthole – bridge die configuration has been successfully used to fabricate products with hollow cross sections for 6000 series aluminum alloys. However, if for 7000 series aluminum alloys, this situation alerts since different alloy composition such as Cu causing hollow extrusion failed due to not enough welding strength in seam. In order to determine the solid welding conditions during hollow extrusion with porthole die structure for high strength aluminum alloy, an easy tooling configuration has been designed. The proposed method is easy and cheap because there is no necessary to conduct experiment in controlled environment such as in vacuum chamber of Gleeble test or in a protective atmosphere. A seam and hollow extrusion for square tube has been conducted to obtain the welding strength comparison to the proposed solid welding method which shows good agreement.

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Periodical:

Key Engineering Materials (Volume 479)

Pages:

62-73

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.479.62

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Online since:

April 2011

Authors:

Quang Cherng Hsu, Kun Hong Kuo, Chi Peng Hsu

Keywords:

AA7075, Extrusion, High Strength Aluminum Alloy, Solid Welding, Welding Chamber

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