The Effect of Smaw Welding Currents on Mechanical Properties and Micro Structures of Low Carbon Steels

Article Preview

Abstract:

Shielded Metal Arc Welding (SMAW) is one of the most widely used types of electric arc welding. The mechanical properties of the welded joints produced are influenced by various factors. This study aims to determine the effect of the magnitude of the welding current on the mechanical properties and physical properties of the SMAW weld joints. The base metal material used in this study was SA 516 Gr. 70 with 3 strong variations of welding current, i.e.: 50A, 60A and 70A. The electrode used for root is E7016 while for filler and cap is E7018 which is 2.6 mm in diameter with climbing (vertical) welding position. From the results of the charpy impact test and the Vickers hardness test, the best is obtained in specimens with welding current strength of 70A. While the results of the microstructure analysis showed that the grain size of specimens with welding current of 50A and 60A was finer than the specimens with a 70A welding current.

You might also be interested in these eBooks

Info:

Periodical:

Materials Science Forum (Volume 1029)

Pages:

15-23

Citation:

Online since:

May 2021

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2021 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Head Quarters Departement Of The Army, Welding Theory and Applicationi. 1993, DOTA: Washington DC, USA.

Google Scholar

[2] Alfian Noviyanto. The Effect Of Polysilazane On The Densification And Mechanical Properties Of SICF/SIC Composites. Sinergi Vol. 24, No. 1, 2020. pp.11-16 ,5670-16368-1-PB (1).pdf.

DOI: 10.22441/sinergi.2020.1.002

Google Scholar

[3] Wiryosumarto, Harsono dan Okumura Toshie. Teknologi Pengelasan Logam, PT. Pradya Paramita, Jakarta. (2004).

Google Scholar

[4] Rohit Jha and A.K. Jha. The Effect of Welding Current on the Tensile Properties of SMAW Welded Mild Steel Joints. International Journal of Engineering Research & Technology (IJERT) IJERT ISSN: 2278-0181. Vol. 3 Issue 4. (2014).

Google Scholar

[5] Rohit Jha and A.K. Jha. Influence of Welding Current and Joint Design on the Tensile Properties of SMAW Welded Mild Steel Joints. Journal of Engineering Research and Applications. ISSN : 2248-9622, Vol. 4, Issue 6( Version 4), 2014. pp.106-111.

Google Scholar

[6] Khamouli, Farida, et al. Effects of Cellulosic and Basic Flux on the Structure, Composition and Hardness of SMAW Welds on Steel X42., International Journal of Engineering Research in Africa, vol. 27, Trans Tech Publications, Ltd., Dec. 2016. p.11–19. Crossref,.

DOI: 10.4028/www.scientific.net/jera.27.11

Google Scholar

[7] He, Xiao Dong, et al. Properties of X80 Pipeline Girth Welds for Different Welding Procedures., Advanced Materials Research, vol. 936, Trans Tech Publications, Ltd., June 2014. p.1747–1753. Crossref,.

DOI: 10.4028/www.scientific.net/amr.936.1747

Google Scholar

[8] Arifin, S. , 1997, Las Listrik dan Otogen, Ghalia Indonesia, Jakarta. (1997).

Google Scholar

[9] Iftika Philo Wardani , Vuri Ayu Setyowati , Suheni , Ilham Prajala Samudra. The Effect Of Welding Current On Aisi 1045 Strength And Corrosion Rate. IOP Conf. Series: Journal of Applied Sciences, Management and Engineering Technology, Vol 1, Issue 2, 2020. 40–45.

DOI: 10.31284/j.jasmet.2020.v1i2.1159

Google Scholar

[10] Djuhana and Muljadi (2019) Influence of variation of electrical current welding of ASTM Steel A 36 on micro structure and mechanical properties. IOP Conf. Series: Journal of Physics: Conf. Series 1204. (2019).

DOI: 10.1088/1742-6596/1204/1/012014

Google Scholar

[11] Syambabu Nutalapati, Azad, D. And Swami Naidu, G, Effect Of Welding Current On Welding Speed And Ultimate Tensile Strength (Uts) Of Mild Steel. IOP Conf. Series: International Journal of Mechanical Engineering and Technology (IJMET) Volume 7, Issue 5, 2016. p.156–176.

Google Scholar

[12] Ogbunnaoffor C. K., Odo J.U., and Nnuka, E. (2016) The Effect of Welding Current and Electrode Types on Tensile Properties of Mild Steel. International Journal of Scientific & Engineering Research, Volume 7, Issue.1120 ISSN 2229-5518. (2016).

Google Scholar

[13] ASME SA-516/A 516M, Standard Test Methods And Definitions for Mechanical Testing of Steel Product.

Google Scholar

[14] Information on Asme SA516 Grade 70|SA516 Grade 60 Steel Plate Specification (steels-supplier.com).

Google Scholar

[15] ASTM A370-12a, 2012. Standard Test Methods And Definitions for Mechanical Testing of Steel Product.

Google Scholar

[16] ASTM E92-17 Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials.

DOI: 10.1520/e0092-17

Google Scholar

[17] Callister, William D, Jr. Materials Science and Engineering. 2011. USA.

Google Scholar

[18] Fitri, M and Mahzan, S. (2020) The Regression Models of Impact Strength of Coir Coconut Fiber Reinforced Resin MatrixComposite Materials. International Journal of Advanced Technology in Mechanical, Mechatronics and Materials (IJATEC) Vol. 01, No. 1 (2020)32-38 https://doi.org/10.37869/ijatec.v1i1.12.

DOI: 10.37869/ijatec.v1i1.12

Google Scholar