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Metal forming

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الكلية كلية الهندسة/المسيب     القسم هندسة السيارات     المرحلة 1
أستاذ المادة جعفر هادي عبود المياح       23/06/2018 08:28:42
Metal forming includes a large group of manufacturing
processes in which plastic deformation is used to change
the shape of metal workpieces. Deformation results from
the use of a tool, usually called a die in metal forming,
which applies stresses that exceed the yield strength of
the metal. The metal therefore deforms to take a shape
determined by the geometry of the die. Metal forming
dominates the class of shaping operations identifi ed in
Chapter 1 as the deformation processes (Figure 1.5).
Stresses applied to plastically deform the metal are
usually compressive. However, some forming processes
stretch the metal, while others bend the metal, and still
others apply shear stresses to the metal. To be successfully
formed, a metal must possess certain properties.
Desirable properties include low yield strength and
high ductility. These properties are affected by temperature.
Ductility is increased and yield strength is reduced
when work temperature is raised. The effect of temperature
gives rise to distinctions between cold working,
warm working, and hot working. Strain rate and friction
are additional factors that affect performance in metal
forming. All of these issues are examined in this chapter,
following an overview of the metal forming processes.

المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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