Effects of heat affected zones temperature on the general performance of high temperature vacuum tube furnace

Document Type

Article

Publication Date

12-1-2008

Abstract

This paper presents details analysis of Heat Affected Zone (HAZ) in High Temperature Vacuum Tube Furnace (HTVTF) to predict fracture region in tube wall due to thermal stress from temperature variation across its thickness. A simple mathematical model is used to illustrate stress concentration arising due to thermal stresses in tube wall and HAZs. Finite element model and analysis were carried out utilizing finite element analysis commercial codes. Combination of thermal stress due to temperature difference determine fracture region. Experimental and simulation results of inside temperature of tube are observed and similar relation have been found. Observation of heat affected blocks indicates near region of HAZ. It is observed that different air flow rates have some effects in reducing thermal stress. Analysis shows that inserting a small pipe inside the first block will reduce thermal stress generation inside HAZs and eventual fracture of the vacuum tube. It is expected that this study is essential for HTVTF design. Copyright © 2008 Tech Science Press.

Publication Source (Journal or Book title)

SDHM Structural Durability and Health Monitoring

First Page

231

Last Page

239

This document is currently not available here.

Share

COinS