What metal forming process is used to produce rail line? Briefly explain the process? (10 points)[minimum 5 bullet points] b) When is a flash formed in forging? What is the influence of the flash in the forming process? (10 points) [minimum 5 bullet points] What type of forging process would be used to make the bevel gear shown in Figure 3?Briefly explain the process and when is this forging process used? (10 points) [minimum5 bullet points] What set of die is used in making aluminum frame shown in Figure 4. What are the other dies typically used in the extrusion of hollow parts? (10 points) d) In terms of metal flow pattern in extrusion, explain why surface cracking and internal cracking defects are formed in extrusion? (10 points) [minimum 5 bullet points]

Fig: 1

Fig: 2

Fig: 3

Fig: 4

Fig: 5

Fig: 6

Fig: 7

Fig: 8