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What is the cooling rate for single pass wire arc welding?

Convective heat transfer

Pressure vessel

Heat-affected zone

Shielded metal arc welding

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The cooling rate for single pass wire arc welding plays a crucial role in determining the microstructure and mechanical properties of the welded joint. Various factors such as heat input, plate thickness, and welding parameters influence the cooling rate. Studies have shown that achieving specific cooling rates is essential to maintain desired mechanical and metallurgical characteristics in the welded joint. Numerical models have been proposed to accurately calculate cooling rates, providing insights into microstructure evolution and hardness distribution. Additionally, the cooling rate significantly impacts the impact toughness of the welded joint, with faster cooling rates leading to enhanced hardness and finer microstructures. Therefore, controlling the cooling rate above a certain threshold is crucial to ensure optimal impact strength and overall weld quality.

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Journal Article•DOI Effect of Weld Cooling Rates on Mechanical and Metallurgical Properties of Submerged Arc Welded Pressure Vessel Steel Harish K. Arya, Kulwant Singh, Ravindra K. Saxena - Show less +2 more 12 May 2018-Journal of Pressure Vessel Technology-transactions of The Asme 10 Citations	The cooling rate for single pass wire arc welding should be above 15°C/s to maintain good impact toughness, as indicated in the study on submerged arc welded pressure vessel steel.
Open access Numerical and Experimental Analyses for Effect of Welding Currents on Cooling Rates in (M MAW) Process Muna Khethier Abbass, Jalal M. Jalil - Show less +1 more 01 Jan 2010	The cooling rate for single pass wire arc welding is influenced by welding currents, with the best result observed at 140Amp according to the numerical and experimental analyses conducted.
Journal Article•DOI Influence of cooling conditions on the microstructure and impact strength of welded joints made by automatic submerged multi-arc welding S. V. Zharkov, P. P. Stepanov, O.A. Bagmet, L. I. Efron - Show less +3 more 30 Jul 2022-Černye metally 2 Citations	The cooling rate for single pass wire arc welding ranges from 0.9 to 12.4 °C/s, impacting the microstructure and impact strength of welded joints significantly.
Journal Article•DOI Reducing potential errors in the calculation of cooling rates for typical arc welding processes André Hälsig, S. Pehle, Mario Kusch, Peter Mayr - Show less +3 more 06 Apr 2017-Welding in The World 7 Citations	The paper discusses potential errors in calculating cooling rates for welding processes, emphasizing the importance of accurately determining cooling rates to improve welded joint quality.
Journal Article•DOI Cooling rate in 800 to 500°C range from dimensional analysis Amit Arora, Gour Gopal Roy, Tarasankar Debroy - Show less +2 more 01 Jul 2010-Science and Technology of Welding and Joining 17 Citations	Not addressed in the paper.

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Related Questions

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How does evapotranspiration relate to cooling effect?1 answersEvapotranspiration is the process by which water is transferred from the Earth's surface to the atmosphere through evaporation from soil and transpiration from plants. This process plays a crucial role in the cooling effect of the environment. When water evaporates from surfaces, it absorbs heat energy from the surroundings, resulting in a cooling effect. This is known as evaporative cooling. Several studies have investigated the relationship between evapotranspiration and cooling effects. Bakhshoodeh et al. found that green façades with well-watered conditions had the highest evapotranspirative cooling effect. García's invention of an external cladding system using porous ceramic material demonstrated the possibility of surface cooling through evapotranspiration. Xu and Ma's study on evaporative cooling of droplets showed that the evaporation rate and total evaporation decrease as the evaporative cooling strength increases. Kamegaki et al. investigated the influence of evaporative cooling on the evaporation rate of water droplets. Von Wolfersdorf's analysis explored the effect of simultaneous cooling from evapotranspiration and transpiration flow through a porous wall.

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