Manufacturing Technology Today

S. Datta ¹, A. Bandyopadhyay ², P. K. Pal ²

Affiliations
1 Dept. of Mechanical Engg., B. P. Poddar Institute of Management & Technology, Kolkata, IN
2 Mechanical Engg. Dept., Jadavpur University, Kolkata, IN

Abstract

A nonlinear mathematical model has been aimed to develop to reveal the effects of welding voltage, current, wirefeed rate and traverse speed on bead volume of bead-on-plate weldment In submerged arc welding (SAW). Experiments were conducted with different levels of process parameters on M.S. plates to obtain bead-on-plate weld. Important bead geometry parameters like bead width, bead height, and depth of penetration have been measured for each experimental runs. Assuming unit length of the job and bead cross sectional area to be in the form of an circular sector, approximate bead volume has been calculated. All these data have been utilized to develop mathematical model for prediction of bead volume. Multiple linear regression method has been employed to calculate the coefficients of the model. The significance of the coefficients for each of the factors In the models has been calculated by Analysis of Variance Method (ANOVA). The relevant model statistics are also shown. The predictions as given by the model haven been represented graphically to show the influence of the selected process control parameters on bead volume associated with submerged arc weldment.

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S. Saha ¹, A. Bandyopadhyay ¹, P. K. Pal ¹, D. K. Bandyopadhyay ¹

Affiliations
1 Mechanical Engineering Department, Jadavpur University, Kolkata-700032, IN

Abstract

To achieve higher productivity, improved accuracy and to keep pace with rapid advancement in technology and manufacturing systems it is not enough to design the machine tool from static consideration only but the dynamic behaviour of the machine tool should also be taken into consideration appropriately. The relative vibratory movement between cutting tool and the work piece effects unsatisfactory performance of the machining process. Like in any other machine tools, vibration in cylindrical grinding machine is supposedly Influenced by parameters of the process, which has not been investigated so far to a fair extent. In the present work some aspects of dynamic performance of cylindrical grinding machine have been experimented, and results thereof analyzed, with special emphasis on parameter: in-feed.

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