Reduction Characteristics of Welding Deformation According to Cooling Distance in Heat Sink Welding

When assembling a welding structure, welding deformation occurs inevitably due to the locally applied heat source. This not only decreases the strength of the structure but also decreases productivity efficiency. In recent years, in-process control welding by an additional cooling source has been ap...

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Bibliographic Details
Published inInternational journal of precision engineering and manufacturing Vol. 23; no. 11; pp. 1229 - 1236
Main Authors Go, Bum-Su, Oh, Kyung-Hwan, Kwon, Soon-Il, Bang, Hee-Seon
Format Journal Article
LanguageEnglish
Published Seoul Korean Society for Precision Engineering 01.11.2022
Springer Nature B.V
Subjects
Cooling
Deformation effects
Engineering
Heat affected zone
Heat sinks
Industrial and Production Engineering
Materials Science
Metal surfaces
Numerical analysis
Process controls
Regular Paper
Thin plates
Welding
Heat sink welding
Water cooling
Numerical analysis
T-Joint
Welding deformation
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Summary:When assembling a welding structure, welding deformation occurs inevitably due to the locally applied heat source. This not only decreases the strength of the structure but also decreases productivity efficiency. In recent years, in-process control welding by an additional cooling source has been applied for thin-plate structures. In the present study, a numerical analysis of Heat Sink Welding (HSW) was performed to examine the effect of the heat sink source on the degree of welding deformation. Then the numerical result was compared with that of conventional welding. Moreover, the result predicted from the numerical analysis was compared with the experimental result on displacement to be validated. As a result, a cooling zone appeared on the welding metal surface. In the case of the heat-affected zone (HAZ), it was confirmed that the maximum temperature decreased from 596 to 545 K compared to the conventional welding method. In addition, the displacement in the thickness direction decreased by about 5%, from 0.83 to 0.79 mm. The overall results obtained in numerical analysis indicated that the cooling efficiency significantly increases as the cooling distance is shorter.
ISSN:2234-7593
2005-4602
DOI:10.1007/s12541-022-00673-8