(Solved): A single bevel-groove weld is used to butt weld two pieces of aluminium alloys plate in gas metal ...

A single bevel-groove weld is used to butt weld two pieces of aluminium alloys plate in gas metal arc welding operation. The groove is prepared with the dimension of the base is 5.0 mm and the height of 8.0 mm as shown in Figure 2.1. The length of the weld = 200 mm. The melting factor of the setup is 0.70. The value of K is 3.33 x 10-6 5 mm 8 mm Single-bevel Figure 2.1: Single bevel-groove a) Determine: i. The amount of heat (in joules) required to melt the volume of metal in this weld (filler metal plus base metal) (5 marks) ii. The heat that must be generated at the heat source (3 marks) iii. Travel velocity (mm/s) (4 marks) b) Figure 2.2 shows the defect from the arc welding process. Examine TWO (2) possible defects and suggest possible methods in preventing them. (6 marks) Figure 2.2: Welding defects