Abstract
This research aims at optimum utilization of waste recycled submerged arc welding slag along with virgin flux in place of pure virgin flux without compromising the quality of welding and effective waste reduction. The related quality aspects, determination of quantum of recycled slag to be used are evaluated through suitable experimentation. The application, process parameters, welding parameters, parent material and filler wires are also changing in line with the job order. In such a dynamic environment weld economy has to be inbuilt through proper mechanism. A suitable mechanism involving optimum usage of spent slag with virgin flux will be ideal in such a dynamic environment An attempt has been made to introduce the waste recycled slag along with virgin flux during Submerged Arc Welding (SAW) of low carbon steel with suitable wire and optimum welding parameters. Varying weight percentage (20, 30,40 & 50 wt.%) of waste slags were mixed and submerged arc welding was carried out; Mechanical testing, Radiography, Ultrasonic tests were employed to ascertain the quality and arrived the optimum mixture of slag and virgin flux. Results revealed that usage of waste slag between 20 and 30 wt.% showcased optimum tensile strength, impact strength, hardness and reduction of cost. However any deviation from the optimum level of recycled slag with virgin flux will deviate from optimum level of quality or profit.
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The authors acknowledge the technical support recieved from M/S. Visalakshi metallurgical industries pvt. Ltd for carrying out the research work.
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Thirunavukkarasu, K., Kavimani, V., Gopal, P.M. et al. Recovery and Recycling Silica Flux in Submerged Arc Welding – Acceptable Properties and Economical Correlation. Silicon 13, 2337–2346 (2021). https://doi.org/10.1007/s12633-020-00819-1
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DOI: https://doi.org/10.1007/s12633-020-00819-1