Heat treatment is the process of heating but never allowing the metal to reach the molten state and cooling a metal in a series of specific operations which changes or restores its mechanical properties. Chapter 4 understanding the aluminum temper designation system this chapter provides additional detail and illustrations for the use of temper designations in the. Nptel metallurgy and material science principles of. Nptel course notes on the web article pdf available january 2014 with 1,363 reads how we measure reads. Its purpose is to provide an understanding of the heat treatment of iron and steels, principally to those unacquainted with this subject. Home forums breezeworks heat treatment pdf nptel tagged. Noncontrollable errors repeatability repeatability the ability of the measuring instrument to give the same value every time the measurement of a. Module 34 heat treatment of steel iv lecture 34 heat treatment of steel iv. Lecture33 module 33 heat treatment of steel iii lecture. Module 33 heat treatment of steel iii lecture 33 heat treatment of steel.
Among layman, the reason for steels dominance is usually considered to be the abundance of iron ore iron is the principal ingredient in all steels andor the ease by which it can be re. Pdf module 34 heat treatment of steel iv lecture 34 heat. Chapter 2 basic heat treatment as steelworkers, we are interested in the heat treatment of metals, because we have to know what effects the heat produced by welding or cutting has on metal. Study of nucleation and growth in eutectoid steel 37 6. Heat treatment, objective, heat treatment process, annealing, normalizing, hardening, spheroidizing, tempering, martempering, austempering, pearlite, martensite. Welding metallurgy ppt free download as powerpoint presentation. Heat treatment lecture notes free download as powerpoint presentation. Log in register lost password viewing 1 post of 1 total author posts december 10, 2018 at 7. Fundamentals of the heat treating of steel 11 steel, however, is by far the most widely used alloy and for averygood reason. Scribd is the worlds largest social reading and publishing site. Geil this monograph is a revision of the previous nbs monograph 18. Heat treatment and surface hardeningpart ii theory of heat treatment nptel. Heat treatment process of controlled heating and cooling of metals alter their physical and mechanical properties without changing the product shape sometimes takes place inadvertently due to manufacturing processes that either heat or cool the metal such as welding or forming.
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