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Which of the following processes is not the type of metal forming process?

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in Casting-Forming-Welding II by (119k points)
Which of the following processes is not the type of metal forming process?

(a) Extrusion

(b) Injection moulding

(c) Forging

(d) Drawing

I had been asked this question in exam.

The above asked question is from Classification of Metal Forming Processes topic in division Forming Process of Casting-Forming-Welding II

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The correct answer is (b) Injection moulding

Easy explanation: Extrusion, forging and drawing process are the main general types of metal forming process, while the injection moulding is other process which is basically a part of casting process which includes the formation of parts by injecting the melt into a cavity by the help of a plunger. This method is not the part of metal forming because the phase change of metal occurs during the process.

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