PERFORMANCE OF BUTTWELD WHEN USING E 7018 ELECTRODE

PERFORMANCE OF BUTT WELD WHEN USING E 7018 ELECTRODE

B. Lokesh Naik1, B. Hussain2, D. Naveen Goud3, Haji Banothu4
4Assistant Professor, Department of Mechanical Engineering, GNITC, Hyderabad, Telangana.

2,3,4 UG Scholars Department of Mechanical Engineering, GNITC, Hyderabad, Telangana.

ABSTRACT
Welding is a fabrication process that joins two or more metals parts by heating together and fusing them. In this project we find the properties of a weld joint of a Mild steel with Shielded Metal Arc Welding (SMAW) process.

SMAW is a fusion welding process that uses a consumable, flux-coated electrode to create an arc between the electrode and the work piece. The E7018 electrode is a type of low hydrogen, iron powder electrode used in welding applications. The "E" in E7018 signifies that it is an electrode, while "70" indicates a tensile strength of 70,000 pounds per square inch (psi), and "18" suggests the welding position(s) in which the electrode can be used.

The cap means the final weld bead in a weld joint. It may be completed in the form

of a stringer bead. After finding the weld defects with non-destructive test, the strength of the weld joint is demonstrated by performing hardness test on butt joint.

Keywords:         GTAW,     SMAW,      Weld strength, Weld defects