WELDING ENGINEERING: COMPARATIVE STUDY of WELDING PROCESS with STRAIGHT, CIRCULAR and ZIGZAG ELECTRODE MANIPULATION

WELDING ENGINEERING: COMPARATIVE STUDY of WELDING PROCESS with STRAIGHT, CIRCULAR and ZIGZAG ELECTRODE MANIPULATION

WELDING ENGINEERING: COMPARATIVE STUDY OF WELDING PROCESS WITH STRAIGHT, CIRCULAR AND ZIGZAG ELECTRODE MANIPULATION

1Bansal Suneev, Anil Saini, 2Manjit Singh, Pandey, Kumar, 3Dileep, Singh, 4Karaj 1Associate Professor, Deptt. of Mech. Engg., RIMT-IET, Mandigobingarh.

2 Assistant Professor, Deptt. of Mech. Engg., QGI, Jhanjheri.

3, 4Student, Deptt. of Mech. Engg., QGI, Jhanjheri.

1suneev@gmail.com

1. Rod

   Figure 1: Arc Welding Process

   Key Words: Arc Welding, Electrode formulation, Hardness, Microstructure, Substrate.

   1. INTRODUCTION

      Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the work pieces and adding a filler material to form a pool of molten material (the weld pool) that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld. This is in contrast with soldering and brazing, which involve melting a lower-melting-point material between the work pieces to form a bond between them, without melting the work pieces.

2. Shield Gas

3. Fusion

4. Base metal

5. Weld metal

6. Solidified Slag

1. PROCEDURE OF EXPERIMENTAL The experiment is divided into two parts:

   Part A: Preparing Test Specimen Part B: Testing Test Specimen

   1. Part A: Preparing Test Specimen

      To perform arc welding process three specimens were prepared. Specimens were prepared for welding process. All there specimen were joined with three manipulation of welding electrode.

      1. Straight Manipulation

      2. Circular Manipulation

      3. Zigzag Manipulation

   2. Part B: Testing Test Specimen

      The entire welding specimens were tested for welding quality. To know the welding quality two types of tests were performed.

      1. Hardness

      2. Microstructure

2. RESULTS

   Table 1 below shows the values of hardness at various electrode manipulations. It is observed that circular manipulation achieved maximum hardness.

   Table 1: Hardness at different manipulation of electrode

   S. No.	Type of Manipulation	Maximum Hardness
   1	Straight	42
   2	Circular	48
   3	Zigzag	34

   Figure 1 shows the microstructure of welded zone with straight manipulation of electrode. Figure 2 shows the microstructure of welded zone with circular manipulation of electrode. Figure 3 shows the microstructure of welded zone with Zigzag manipulation of electrode.

   Figure 2: Straight Manipulation

   Figure 3: Circular Manipulation

   Figure 4: Zigzag Manipulation

3. CONCLUSION

   Present work showed microstructure and maximum harness value at different manipulation of electrode. From the result of hardness it is concluded that maximum hardness can be achieved by doing circular manipulation. The micro structure of circular manipulation is smoother and evens that other two manipulation.

4. ACKNOWLEDGEMENT

Our team extends special thanks to RIMT, Mandigobingarh and QGI, Jhanjheri for continued support and kind encouragement during the project. Special thanks to all staff members of both the organization who help a lot during this project.

REFERENCES

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