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research-article

Cooling time (t8/5) model for submerged arc welded pressure vessel steel using dimensional analysis

[+] Author and Article Information
Harish Kumar Arya

Assistant Professor Sant Longowal Institute of Engineering & Technology, Longowal (Sangrur) INDIA
arya.iitr@gmail.com

Kulwant Singh

Professor Sant Longowal Institute of Engineering & Technology, Longowal (Sangrur) INDIA
engrkulwant@yahoo.co.in

R. K. Saxena

Professor Sant Longowal Institute of Engineering & Technology, Longowal (Sangrur) INDIA
rksaxena.04@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4038018 History: Received May 06, 2017; Revised September 05, 2017

Abstract

Most of the microstructural changes in weldment takes place during weld cooling from 800 to 500 ° C (t8/5) specially in heat affected zone. Weld strength and cracking tendency can also relate to t8/5. A generalized model using dimensional analysis has been proposed for estimation of weld cooling time (t8/5) for variable plate thicknesses. The proposed model is based on rotatable central composite designed submerged arc welding experiments. Model considers material properties, weld parameters and environmental conditions for submerged arc welding. Model is validated with experimental data and cooling time observed by other researchers. The adequacy of model found 97% and able to predict cooling time for a plate thickness ranging from 8 to 41.5 mm thickness.

Copyright (c) 2017 by ASME
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