Improvement in Tensile Strength and Microstructural Properties of SAW Welded Low Alloy Steels by Addition of Titanium and Manganese in Agglomerated Flux

Chandra Rk,Majid M

doi:10.4172/2169-0022.1000260

Abstract

The present work is an effort to study the effect of titanium and manganese powder addition in agglomerated flux, on the mechanical properties, of MS 1025 steel welds made by submerged arc welding. The effect of titanium and manganese powder addition on the agglomerated fluxes by varying the welding parameters like welding voltage and welding speed has been evaluated. Taguchi technique has been used for the design of experiments. The effects of flux, voltage and travel speed have been evaluated on the tensile strength and on the microstructure refining. The effect of all the input parameters on the output responses have been analyzed using the analysis of variance (ANOVA).

Highlights

Submerged arc welding is an arc welding process that uses an arc between a bare metal electrodes and the weld pool
The present study was carried out to study the effect of titanium and manganese addition in submerged arc welding flux on the mechanical properties of AISI 1025 welds by keeping all other variables constant like current, speed and arc voltage
As a result of increasing the titanium content in the flux, the amount of acicular ferrite was increased in the weld metal

Summary

Introduction

Submerged arc welding is an arc welding process that uses an arc between a bare metal electrodes and the weld pool. The arc is maintained in a cavity of molten flux or slag which refines the weld metal and protects it from atmospheric contamination [1,2,3]. The Unused flux can be extracted from left behind the welding head and subsequently recycled. The filler material is an uncoated, continuous wire electrode, applied to the joint together with a flow of granular flux, which is supplied from a flux hopper through a tube. The size of the cavity in front of the arc is delineated by the scrap basic material and behind it by the molten weld

Methods

Results

Conclusion