NDLI: Modeling and optimization of dilution in SAW in the presence of Cr2O3 nano-particles

Content Provider	Springer Nature Link
Author	Aghakhani, Masood Naderian, Pooria
Copyright Year	2015
Abstract	Dilution is an important quality characteristic in welding, since it influences performance of welded/surfaced structures in service due to chemical and metallurgical changes in weld metal. The main objective of the present study is to develop an empirical formula for optimization of percentage dilution as affected by the combined effect of welding input parameters such as arc voltage, welding current, contact tip-to-plate distance, welding speed, and Cr2O3 nano-particles in submerged arc welding (SAW) process. The five-level five-parameter central composite rotatable design (CCRD) and response surface methodology (RSM) were used to develop empirical formula. Analysis of variance (ANOVA) was conducted to test adequacy of the empirical formula at 95 % confidence level. The remarkable result of this investigation indicates that arc constriction is another mechanism which controls percentage dilution in SAW process. The results show that changing the thickness of Cr2O3 nano-particles from 0 to 0.25 mm increased percentage dilution from 61.5 to 62.8, whereas changing the thickness from 0.25 to 0.75 mm decreased percentage dilution from 62.8 to 59.9. However, above the thickness of 0.75 mm, percentage dilution increased from 59.9 to 60.9. Finally, the results of confirmation experiments showed that error of the empirical formula was less than 5 %.
Starting Page	1665
Ending Page	1676
Page Count	12
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	78
Issue Number	9-12
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2015-01-14
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Submerged arc welding Dilution Response surface methodology Cr2O3 nano-particles Industrial and Production Engineering Production/Logistics/Supply Chain Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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