Paper Title:
Numerical Simulation of Temperature Field and Stress Field of Electron Beam Brazing Stainless Steel Radiator
  Abstract

Aiming at the radiator with tube-to-plate structure applied usually in aeroplane, a two-dimensional model for finite element analysis was established in this work. By ANSYS software, the temperature field and stress field of electron beam brazing (EBB) 1Cr18Ni9Ti stainless steel radiator by two kinds of process were numerically simulated. The calculated results of temperature field show, by the stage-by-stage heating process, the uniform temperature distribution of radiator faying face was obtained. The temperature of most regions is between 1042~1051°C, which is in the range of brazing temperature. The calculation results of stress field indicate, for radial residual stress, the obvious stress concentration region was found in faying face by direct-heating process; while there was no stress concentration in faying face by stage-by-stage heating process. For circumferential residual stress, compared the stage-by-stage heating process with direct-heating process, the peak value of tensile stress reduces by 11.2%. Compared circumferential residual stress with radial residual stress by two kinds of brazing process, the peak value of circumferential tensile stress is higher than radial tensile stress. So the dangerous position of faying face is along circle direction, namely, the heating direction of scanning electron beam. Consequently, the temperature difference between different positions in faying face must be controlled well during heating. The reduction of temperature difference can fall the peak value of tensile stress and improve the distribution of residual stress.

  Info
Periodical
Materials Science Forum (Volumes 575-578)
Edited by
Jitai NIU, Zuyan LIU, Cheng JIN and Guangtao Zhou
Pages
649-653
DOI
10.4028/www.scientific.net/MSF.575-578.649
Citation
J. M. Li, F. R. Chen, "Numerical Simulation of Temperature Field and Stress Field of Electron Beam Brazing Stainless Steel Radiator", Materials Science Forum, Vols. 575-578, pp. 649-653, 2008
Online since
April 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Kazuyoshi Saida, Woo Hyun Song, Kazutoshi Nishimoto, Makoto Shirai
Abstract:The diode laser brazing of heat-resistant alloys with precious filler metals has been conducted using tandem beam which consisted of...
493
Authors: Ping An Shi
Abstract:With considering the geometry characteristic of laser brazing and analyzing the action features of heat source in laser brazing, an adaptive...
3525
Authors: Kristína Demianová, Miroslav Sahul, Mária Behúlová, Milan Turňa
Abstract:The contribution deals with the initial design and numerical simulation of brazing process for components of solar collectors from...
450
Authors: Zhuo Jun Chen, Chang Jin Yang, Xiao Long Gu, Cheng Dong Wu, Long Long Feng
Chapter 3: Materials Forming, Machining and Joining
Abstract:Vacuum brazing of 316L stainless steel with BNi-2 brazing filler metal.The effects of brazing temperature and brazing clearance on...
1242
Authors: Pei Yao Li, Zhi Shui Yu
Abstract:A three-dimensional computer code which is employed for modelling of fluid flow and heat transfer during braze gap filling on vacuum brazing...
733