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Essay On Weld Joint

1177 Words5 Pages

Study of weld Joint for Inconel 625 Material using Finite Element Analysis
R. K Praharaj1, N. Gadre2, Prof P.K Ray3, Vinaay Patil4
1&3Mechanical Engineering Dept. NIT, Rourkela, India
4Analysis Engineer at Vaftsy CAE, Pune, India
2Analysis Engineer at I- Design Engineering Solution, Pune, India

Abstract- In most of vacuum application products like rectangular vessel containing of copper coils which are covered with some insulation type material like glass fiber, resin etc. for minimum energy loss. These insulation materials are connected to the wall of the vessel. Copper coil assembly is fitted after bottom plate and middle chamber welding, but welding of the top plate with middle chamber is done after that. During the welding process of …show more content…

No. Temperature (0C) Thermal Conductivity (W/m.0C) Linear expansion(mm/mm.0C) Sp. Heat (J/Kg.0C) Young’s Modulus(GPa) Poisson’s ratio
1 93 10.8 12.8x 10^-6 420 204.1 0.28
2 204 12.5 13.1 x 10^-6 456 197 0.286
3 316 14.1 13.3x 10^-6 481 191.7 0.29
4 427 15.7 13.7 x 10^-6 511 185.5 0.295
5 538 17.5 14.0 x 10^-6 536 178.6 0.305
6 649 19.0 14.8 x 10^-6 565 170.3 0.321

2.1 Transient Thermal Analysis of Welding Process In thermal analysis, loading and boundary condition is applied to the model surface. Heat loss occurs from the model surfaces by both radiation and convection modes and which are depending on the radiation constants and the film coefficient respectively. In thermal analysis the applied movable heat source is heat flow Q, the quantity of heat flow is calculated by the below formula [Radaj, 1992]: Q = ηUI Where as η = weld efficiency or arc coefficient U = arc voltage (Volts) I = arc current (Amp)
2.1 TEMPERATURE CONTOUR AT WELD JOINTS
By putting the input data in table1 for Inconel material for transient thermal analysis Temperature distribution is given

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