PERFORMANCE OF BUTTWELD WHEN USING E 7018 ELECTRODE

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.