What are the procedures adopted to increase the fatigue resistance of: Spindle shaft; Welded joint; Aluminum sheet with hole; Gear.

1. Wire drawing is cold working process use to decrease the dimeter of wire. A) Explain the process. B) Discuss the effect of this process on mechanical properties in'details? Sketch to illustrate your explanation. 2. Name and explain a manufacturing process of making open end wrench? 3. How can you decided whether to use a cold work or hot work processes? 4. Briefly explain arc welding and oxyacetylene welding? ( 5. Submerged arc welding is suitable for non-ferrous metals. YES, OR NO, AND EXPALIN WHY? 6. Briefly explain powder metallurgy (P/M)? 7. What is flux in welding. What is the main purpose of using it? . 8. Name and explain a method used to measure particle size of powder, especially if you have variety of sizes?( 9. Briefly explain the metallurgy of welding. Sketch it?

Define the term distributing force?

Show by neat sketches the various ways in which a riveted joint may fail.

Which material is stronger? 250 maraging steel at room temperature (RT) or 6061 T6 aluminum sheet at room temperature?

Define the following terms: Sagging, Hogging, Point of Contraflexure?

What are steel sections?

During sheet metal working the Seam Joint is formed by folding of sheet metal. Select one: True False

What are ratchet lines, and how are they arranged with respect to the fatigue crack front and any clamshell marks that may also be present?

In this project, you have been asked to technically support the team in the following case: The team is working to select the best method to manufacture a steel threaded bolt, see Figure 2. You have been asked to figure out different alternatives to manufacture the bolt and make a comparison between the alternatives in terms of productivity, quality, surface finish, cost and others engineering factors. Which process do you recommend the most and why? thread nut runout shank radius head * grip length – nominal length thread length Figure 2: Threaded bolt and nut.