Review Question ME 286 Review Question ME 286 ME286 Chapter 1/HM.#1 Name: Review

Question

Review Question ME 286 Review Question ME 286 ME286 Chapter 1/HM.#1 Name: Review Questions 1) What is the definition of steel? 12 points 2) In manufacturing processes, what is the difference between a processing operation and an assembly operation? 13 points] 3) What is the difference between net shape processes and near net shape processes 4 points! Multiple Choice Quiz one of the following engineering materials is defined as a compound containing metallic and nonmetallic elements? [2 points (a) ceramic (b) composite, (c) metal, or (d) polymer? 4) Which 5) Which of the following processes start with a material that is in a fluid or semi-fluid state and solidifies the material in a cavity (two best answers): [4 points) (f) turning (a) casting. (b) forging (c) machining (e) pressing, and (d) molding?

Explanation / Answer

Ans of Ques: 01 - Commercial iron that contains carbon in any amount up to about 1.7 percent as an essential alloying constituent, is malleable when under suitable conditions, and is distinguished from cast iron by its malleability and lower carbon content.

Ans of Ques 02 :- In processing operation the work material is transformed from one state to other advanced state. Through this operation value is added to the work material by changing the geometry; shape properties, appearance etc. of the starting work material. Usually processing operations are performed on individual component. But in some cases like aerospace industry, the processing operations are performed on assembled items also.

In assembly operation two or more components are joined to create a new entity. The new entity is called assembly, subassembly based on its state in the product. If the entity is an intermediate state of the product, it is called subassembly. Some other terms are also referred based on the joining process. The assembly created by welding operation is called weld met.

Ans of Ques 03:-

Net shape processing refers to any manufacturing process which creates an object in its finished form without the need for finish machining or other actions.

Near net shape is an industrial manufacturing technique. The name implies that the initial production of the item is very close to the final (net) shape, reducing the need for surface finishing. Reducing traditional finishing such as machining or grindingeliminates more than two-thirds of the production costs in some industries.

Ans of Ques 04:- (a) Ceramic

Ans of Ques 05 :- (a) Casting & (d) Molding

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