Experimental investigation on high temperature wettability and structural behaviour of SAW fluxes using MgO–TiO2–SiO2 and Al2O3–MgO–SiO2 flux system

Sharma, Lochan; Kumar, J. Jagadesh; Chhibber, Rahul

doi:10.1016/j.ceramint.2019.11.011

Cited by 18 publications

(9 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of mixture experiment in welding flux design has been on the increase since 2004 [24,46,47,50,53,[62][63][64][65][66][67][81][82][83][84][85]. The efficacy and the successful application of mixture experiment has spurred WFDs to further explore the toolkit of DoE to identify the ones suitable for welding flux development.…”

Section: The Current Approach To Experimentationmentioning

confidence: 99%

“…Application of Scheffe's quadratic model proposed by Kanjilal et al [46] has gained much attention in welding flux development [19, 22, 56, 62-67, 82, 85]. Scheffe's cubic and special cubic models suggested for welding flux development by Adeyeye and Oyawale [75] started getting attention recently and have been used for prediction and explanation of main, binary and ternary interaction effects of flux ingredients but those suggested for edge and additive effects are yet to be explored [62,63,66,67]. They are therefore recommended for further studies.…”

Section: Predictive Modellingmentioning

confidence: 99%

See 1 more Smart Citation

Current trends in welding flux development

Adeyeye¹

2021

Nig. J. Tech.

View full text Add to dashboard Cite

Welding flux makes significant contribution to weld-metal quality, productivity of welding process and rapid deployment of new materials. Deployment of new materials has been hampered because of lengthy trial-and-test experiments and paucity of methodology for modelling and optimisation in the traditional welding flux development. This paper discussed the contributions made to mitigate the drawbacks of traditional welding flux development in areas of experimentations, prediction modelling and optimisation. Limitations of current efforts were identified and suggested for future research, namely (i) current response models are limited to well-behaved flux systems and do not account for edge and additive effects of flux ingredients (ii) non-incorporation of stakeholder’s preferences concerning the relative importance of quality attributes (iii) lack of prediction and optimisation tools for determining optimal coating factor and flux heights for Shielded Metal Arc Welding and Submerge Arc Welding respectively and (iv) non-continuous response functions and concave regions of the trade-off surface are not considered.

show abstract

Section: The Current Approach To Experimentationmentioning

confidence: 99%

Section: Predictive Modellingmentioning

confidence: 99%

Current trends in welding flux development

Adeyeye¹

2021

Nig. J. Tech.

View full text Add to dashboard Cite

show abstract

“…Coating's wettability properties and structural behavior are still unexplored in the public domain. [35][36][37] The mixture design approach is used in this study to prepare the electrode coating mixture using CaF 2 -SiO 2 -CaO-22.5%TiO 2 SMAW electrode coating for thermal power plant applications. Experimentation was performed to evaluate the wettability characteristics.…”

Section: Introductionmentioning

confidence: 99%

Investigations on wetting and structural behavior using CaF₂-SiO₂-CaO-22.5%TiO₂ SMAW electrode coating for AUSC applications

Kumar

Chhibber

Mahajan³

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

This study investigates the structural behavior and high-temperature wettability of a CaF2-SiO2-CaO-22.5%TiO2 shielded metal arc welding electrode coating for advanced ultra-supercritical power plant applications. The wettability parameters were measured, including contact angle, spread area, adhesion energy, and surface tension. Extreme vertices mixture design approaches were used to develop 13 different electrode coatings. To determine the contact angle at solid/liquid interface, circular pellets were made from powder samples and heated inside the furnace at 1125°C at a constant heating rate. Young's and Boni's equations are used to calculate the surface tension value for 13 coated samples using the calculated contact angle. Adhesion energy for 13 coated samples is calculated using Dupre's equation. Phases and structural behavior of coating samples were measured by Fourier transform infrared spectroscopy and X-ray diffraction. The developed regression model estimates the impact of primary ingredients and their interaction on the calculated wettability characteristics. CaF2.SiO2, CaO.SiO2, and CaO.CaF2 binary mixture is the more favorable and substantially impacts contact angle, whereas ternary interactions of CaO.SiO2.CaF2 shows an opposite effect on contact angle. Coating numbers 2 and 10 give better wetting behavior and spread area due to the low value of contact angles. Individual ingredient shows an increasing effect on surface tension and adhesion energy. Ternary component of CaO.CaF2.SiO2 is favorable and shows an increasing impact on adhesion energy.

show abstract

“…The important benefit of the sessile drop method is that it allows the investigation of the surface tension of various fluids, most of which are solid at ambient temperature [23][24][25][26][27][28]. Additionally, the researchers examined the impact of various flux ratios on these properties [29,30]. Kim et al found that the induction of microstructural alterations is significantly aided by corrected optical basicity.…”

Section: Introductionmentioning

confidence: 99%

Wettability study of Developed Silicon based SMAW Electrode Coating Fluxes using SiO 2 -CaO-TiO 2 and SiO 2 -CaO-MgO Ternary System

Mishra,

Sharma,

Chhibber

2023

Preprint

Self Cite

View full text Add to dashboard Cite

The current research aims to develop and investigate the wettability behaviour of the fluxes used to coat shielded metal arc welding electrodes for offshore applications. Weld characteristics on duplex stainless steel are significantly affected by the flux's wettability characteristics. The wetting properties of SMAW electrode coatings were measured using the sessile drop technique. Twenty-six flux constituents of coatings have been formulated using the mixture design approach. At a temperature of 1423 K, the contact angle, spread area, surface tension, and adhesion work are measured. X-ray diffraction (XRD) analytical techniques and Fourier transform infrared spectroscopy (FTIR) analysis were employed to determine the phases present in various types of fluxes. The influence of electrode coating flux compositions on different wetting parameters was examined using statistical models. It was observed that CaO, SiO2, and TiO2 individually have an increasing impact on contact angle, whereas MgO has a decreasing effect. CaO.MgO, SiO2.MgO, and TiO2.MgO is the only binary constituent increasing the contact angle. CaO and TiO2 exhibit increasing impacts, whereas SiO2 and MgO have a decreasing impact on the spread area. CaO.SiO2, SiO.TiO2, SiO.MgO, and TiO2.MgO interactions have increasing effects, while other binary interactions show decreasing effects on the spread area. Individual constituents have a positive effect on surface tension. MgO is the only constituent that increases the work of adhesion, and other constituents decrease it. Interactions like CaO, SiO2, CaO, TiO2, and SiO2.TiO2 has an increasing impact on adhesion work, while other binary interactions show a negative effect. Utilizing an artificial neural network approach, the mean square error (MSE) and mean absolute percentage error (MAPE) values for the predicted outcome were effectively minimized. ANN model prediction was compared to regression prediction.

show abstract

Experimental investigation on high temperature wettability and structural behaviour of SAW fluxes using MgO–TiO2–SiO2 and Al2O3–MgO–SiO2 flux system

Cited by 18 publications

References 15 publications

Current trends in welding flux development

Current trends in welding flux development

Investigations on wetting and structural behavior using CaF₂-SiO₂-CaO-22.5%TiO₂ SMAW electrode coating for AUSC applications

Wettability study of Developed Silicon based SMAW Electrode Coating Fluxes using SiO 2 -CaO-TiO 2 and SiO 2 -CaO-MgO Ternary System

Contact Info

Product

Resources

About

Experimental investigation on high temperature wettability and structural behaviour of SAW fluxes using MgO–TiO2–SiO2 and Al2O3–MgO–SiO2 flux system

Cited by 18 publications

References 15 publications

Current trends in welding flux development

Current trends in welding flux development

Investigations on wetting and structural behavior using CaF2-SiO2-CaO-22.5%TiO2 SMAW electrode coating for AUSC applications

Wettability study of Developed Silicon based SMAW Electrode Coating Fluxes using SiO 2 -CaO-TiO 2 and SiO 2 -CaO-MgO Ternary System

Contact Info

Product

Resources

About

Investigations on wetting and structural behavior using CaF₂-SiO₂-CaO-22.5%TiO₂ SMAW electrode coating for AUSC applications