• Title: Defects Affecting Extrusion – Stretcher Strains
• Author: Jerome Fourmann
• Author Company: Rio Tinto Aluminum
• Volume: Vol. 76, No. 2
• Year: 2018
• No. Pages: 2.5
• Description: The 23rd article in a series, this article addresses defects related to the stretching operation. Conducting and controlling an adequate stretch is essential for the overall profile dimensions, tolerances, mechanical properties, and surface quality. Stretcher strain variations developed during the stretching process can affect the structural soundness of the profile. It can also affect post-extrusion processes, such as painting or anodizing, resulting in unacceptable surface finish. The characteristics, causes, mechanism, and remedies for the defects are discussed.
Product Code: DEFYS4X136