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IE370Lecturehw3 solution0

IE370Lecturehw3 solution0 - Homework 3 Due Friday Oct 10th...

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Homework 3. Due Friday Oct 10 th 1. Describe the four basic families of shape production processes. Ans: Casting Processes Material removal processes Deformation processes Consolidation processes Casting is when molten material is poured into a mold and hardened. Material removal is when material is cut away from a larger object. Deformation is when the object is shaped by applying forces to it. Consolidating involves combining materials by methods such as welding and soldering. 2. Describe the six steps of metal casting. Ans: Mold cavity is produced having the desired shape and size of the part Melting process Pouring technique Solidification process Mold removal Cleaning, finishing and inspection operations 3. Describe the difference between expandable mold and permanent mold. What are they generally made of respectively? Ans: Expendable mold process uses an expendable mold which must be destroyed to remove casting while permanent mold processes uses a permanent mold which can be used many times to produce many casting. Usually, expendable mold is made of sand plaster and similar materials plus binders. And permanent mold is made of metal or ceramic refractory material.
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