1. To practice arc welding and produce three parallel lines as shown in Figure To practice arc welding for Butt joint as shown in Figure 2.

Transcription

1 1. To practice arc welding and produce three parallel lines as shown in Figure To practice arc welding for Butt joint as shown in Figure 2. Time: 3 hrs Figure 1: Arc welding practice Figure 2: Butt joint Arc welding WELDING SHOP PREPARED BY: ANUP KC SCALE: ARC WELDING FOR BUTT JOINT CHECKED BY: P.L. SHRESTHA DATE:

2 1. To practice arc welding for lap joint as shown in Figure 3 2. To practice arc welding for Tee joint as shown in Figure 4. Time: 3 hours Figure 3: Lap Joint Arc Welding Figure 4: Tee Joint Arc Welding WELDING SHOP PREPARED BY: ANUP KC SCALE: LAP JOINT AND TEE JOINT CHECKED BY: P.L. SHRESTHA DATE:

3 1. To practice gas welding for pipe joint as shown in Figure To practice gas welding on sheet metal with and without filler rod Time: 3 hours Figure 5: Oxy-acetylene Gas Welding of Pipe WELDING SHOP PREPARED BY: ANUP KC SCALE: GAS WELDING OF PIPE CHECKED BY: P.L. SHRESTHA DATE:

4 1. To prepare sand mould with and without pattern as shown in Figure 6. Time: 3 hours Figure 6: Sand molding pattern FOUNDRY SHOP PREPARED BY: ANUP KC SCALE: SAND MOLDING AND PATTERN CHECKED BY: P.L. SHRESTHA DATE:

5 1. To use lathe to perform various operations as mentioned below in the job piece 1. Facing 2. Centre drilling 3. Straight turning 4. Radius grooving 5. Step turning Job L Taper turning 2. Drilling Job L-02 MACHINE SHOP PREPARED BY: ANUP KC SCALE: MACHINING ON LATHE CHECKED BY: P.L. SHRESTHA DATE:

6 1. To use lathe to perform various operations as mentioned below in the job piece 1. Grooving Job L Knurling 2. Threading 3. Chamfering Job L-04 MACHINE SHOP PREPARED BY: ANUP KC SCALE: MACHINING ON LATHE CHECKED BY: P.L. SHRESTHA DATE:

7 1. To use lathe to perform various operations as mentioned below in the job piece 1. Tapping Job L-05 MACHINE SHOP PREPARED BY: ANUP KC SCALE: MACHINING ON LATHE CHECKED BY: P.L. SHRESTHA DATE:

8 1. To form a square hook from a straight cylindrical MS rod by hot working the metal Calculate the initial length of the MS rod required to match the volume of metal in end product. Show the required calculations and percentage error. Also mention the dimensional deviations between the designed and actual product. SMITHY SHOP PREPARED BY: ANUP KC SCALE: HOT WORKING OF METAL CHECKED BY: P.L. SHRESTHA DATE:

9 Guidelines for Lab works 1. Lab Technical officers at different shops will guide the students to carry out the aforementioned jobs. 2. Students must follow all the safety measures and rules of the specific lab/ shop. 3. Students are required to submit a report about the activities performed in different shops, at the end of the laboratory work for evaluation followed by viva-voce. The course instructor will declare the date for the same. 4. The report should contain, for each shop/operations: a. Theory and working principle b. Description of tools used c. Detail procedure of operation d. Figures/ drawings/ symbols of the job piece and operation e. Deviations/ error calculations f. Conclusion 5. Students should prepare a well formatted hand written report. Use A4 sheet with margins on all the four corners (20 mm on left, and 10 mm on other 3 sides). Use only single side of the paper.