The Shielded Metal Arc Welding (SMAW) is a joining technique in which melting and joining of metals with the help of an arc between the workpiece and the filler rod. The core purpose of the paper is to examine the mechanical characteristics of welded metal under various standalone parameters like type of filler material, electrode diameter, and current for SMAW. This paper employed the half factorial Design of Experiment (DOE) using Taguchi L4 array. Varieties of welding filler materials used were E6013 and E7016, with an electrode diameter of 3.15mm and 4mm and the welding current of 90A and 110A. The desired output variables were tensile strength and Rockwell hardness of the welded joint. This paper found that when electrode diameter increases, the deposition rate increases, and hence HAZ increases, which decreases the weld strength. Using the welding filler E7016, we can obtain the maximum tensile strength for welded metals.
This paper presents previous research work of researchers on electrolytic in-process dressing and its ultrasonic-assisted system variant. This paper also contains information about the ELID system and applications of ultrasonic-assisted ELID. This technique enables continuous dressing of wheels made using metallic bond in the grinding process itself while retaining sharp grits from the super abrasive wheels. An ultrasonic-assisted setup requires an ultrasonic power generator, piezoelectric transducer (PZT), horn assembly. An ultrasonic generator generates ultrasonic pulses, which are supplied to the piezoelectric transducer. The piezoelectric transducer then converts electrical energy to mechanical energy and vibrates either in longitudinal mode or in transverse mode. The horn system then amplifies these vibrations, and amplified vibration is supplied to the grinding tool. The relevance of research papers referred to regarding setup development of ultrasonic-assisted electrolytic in-process dressing, effect of process parameters and modeling of the ultrasonic-assisted ELID process is described in this paper.
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