Год выпуска: 2011 Автор: Syed Sohail Akhtar and Abul Fazal M. Arif Издательство: LAP Lambert Academic Publishing Страниц: 268 ISBN: 9783846545126
Описание
High pressures, elevated temperatures, complex and intricate section geometries lead to repeated mechanical and thermal stresses in the extrusion die and affiliated tooling. The focus of this monograph is on the following three distinct yet inter-related studies pertaining to the improvement of aluminum extrusion die: failure analysis, surface treatment, and effect of billet quality. The following topics are discussed in detail: investigation of various modes and critical failure types based on industrial data; FE simulation for identification of critical process parameters & design features in die fatigue-life; analysis of gas nitriding process for H13 steel and investigation of various effects including repeated nitriding, pre-nitriding surface preparation and die profile geometry on the nitriding performance; investigation of the effect of billet quality and related influencing extrusion parameters on the die service life; regression-based die life models; microstructural...
