Which of the following is TRUE of powder metallurgy?
A) Machining is required after forming the component.
B) There is more waste than with casting the molten metal.
C) Iron powder from mill scrap makes a denser component than iron particles formed through water atomization.
D) It is used to separate gangue from the rest of the metal ore.
E) It does not require the high temperatures that are involved in casting molten metal.

Question

Quizplus · Accepted Answer

Powder metallurgy does not require the high temperatures that are involved in casting molten metal. Instead, the metal is first ground into a fine powder and then formed into the desired shape through processes such as pressing, sintering, and powder injection molding. This results in less waste compared to casting, as all the powder is used, and machining is not always required after forming the component. Iron powder formed through water atomization can also result in a denser component compared to the use of iron powder from mill scrap, as it has smaller and more consistent particle sizes. However, powder metallurgy is not used to separate gangue from the rest of the metal ore.

Which of the Following Is TRUE of Powder Metallurgy