May 07, 2017 mainly sheet metal process can be divided into three types. Metal matrix composite an overview sciencedirect topics. Superplastic forming is a specialist process used for deforming metal sheet to extremely large plastic strains to produce thinwalled components to the nearnet shape. Some of the original topics have been omitted or given in an abbreviated form in appendices. Once the certificates are printed, reprint of certificates with corrections will be done only by paying additional fees. Maintaining precise material flow characteristics is crucial for producing a highquality stamped part. Metal matrix composites mmcs are a group of materials such as metals, alloys or intermetallic compounds incorporated with various reinforcing phases, such as particulates, whiskers or continuous fibres.
Forming nptel web course free ebook download as pdf file. Sep 25, 2011 fundamentals of metal forming overview of metal forming material behavior in metal forming temperature in metal forming. Lecture notes design and manufacturing ii mechanical. We are here to provides you the best study notes from best coaching like made easy, ace academy etc and lecture notes from best institutions like mit open course, iit nptel, crec tirupati, washington, middle east technical university etc. Metal forming processes are characteristic in that the metal being processed is plastically deformed to shape it into a desired geometry. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of 9 plasticity 1. In recent years, enormous progress has been made in the analysis of forming of complex shapes using. Metal forming is possible in case of such metals or alloys which are sufficiently malleable and ductile. Property data given in this chapter are therefore given as ranges rather than as single values. Metal casting processes indian institute of technology guwahati.
After converting nonporous metal into product form by metal forming processes, the mass as well as the volume remains unchanged. Sheet metal operations other sheet metal forming processes. Manufacturing process study notes handwritten free pdf. Fundamentals of metal forming overview of metal forming material behavior in metal forming temperature in metal forming. Luders bands can be eliminated by coldrolling the thickness by 0. Electromagnetic forming emf is a non conventional metal working process that relies on the use of electromagnetic forces to deform metallic materials at high speeds. Mechanics of sheet metal forming college of engineering. Lecture 1 introduction to metal forming technology. A line diagram of a typical pres is explained in the figure 2. Principles of metal forming technology announcements. Pdf easyengineering team strength of materials handwritten classroom notes for ies. Metal in powder form is costlier than in solid form. Casting consists of pouring molten metal into a mold, where it solidifies into the shape of the mold.
Plastic properties of metals are used during the process of metal forming. A press is a sheet metal working tool with a stationary bed and a powered ram can be driven towards the bed or away from the bed to apply force or required pressure for various metal forming operations. This article presents the technique of limit analysis, both upper and lower bound. Developments in high temperature corrosion and protection of materials, 2008. Yieldpoint elongation lueders bands on lowcarbon steels and almg alloys. The author has conducted research in metal forming and has taught the subjects of metal forming analysis and metal forming technology to the graduate and undergraduate students of iit bombay and iit delhi for a total period of more than 35 years, during which time, he also guided many ph. It provides a detailed discussion of specific forming processes, such as deep drawing, rolling, bending extrusion and stamping. Metal forming processes indian institute of technology. It is particularly valuable for the economical production of complex shapes, ranging from massproduced parts. J s campbell, principles of manufacturing materials and processes. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page. Practically all metals, which are not used in cast form are reduced to some standard shapes for subsequent processing. Chapter 4 metal matrix composites princeton university.
Metal casting ace engineering academy hand written notes free download. Exact analytical solutions for metalforming processes and operations are. Manufacturing companies producing metals supply metals in form of ingots which are obtained by casting liquid metal into a square cross section. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of. Sep 29, 2015 comparison of metal forming processescomparison of metal forming processes 34. Jul 27, 2009 lecture series on manufacturing processes i by prof. The material experiences plastic deformation to change the shape of the component and converted to the desired shape of the component. Thank you nptel for making these lectures available for the entire international comunity. Metal forming processes, also known as mechanical working processes, are primary shaping processes in which a mass of metal or alloy is subjected to mechanical forces.
Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. More than 90% of smelted metal is processed by different methods of metal forming. The process was well established in the bronze age beginning c. Manufacturing processes i nptel online videos, courses. Various metal forming techniques and their analysis, viz. The author highlights recent developments of metal forming technologies and explains sound, new and powerful expert system techniques for solving advanced engineering problems in metal forming. Stresses beyond yield strength of the workpiece material is required.
This paper discussion will be made about the rolling process, the working principle of the rolling process along with that the working principle of the rolling mills. Carl zweben, metal matrix composites, contractor report for ota, january 1987. Under the action of such forces, the shape and size of metal piece undergo a change. Two prominent methods of converting raw material into a product have been metal forming and machining. Metal forming is a manufacturing process in which forces are applied on raw material such that stresses induced in the material are greater than yield stress and less than ultimate stress. Bulk metal forming, sheet metal forming stretching. Metal forming processes indian institute of technology guwahati. Metal casting processes indian institute of technology. Find materials for this course in the pages linked along the left. Some mmc properties cannot be measured as they would be for monolithic metals.
A first stage where the volume of the part is generated a second stage where the. Metal forming involves changing the shape of the material by permanent plastic deformation. Stretching of the sheet during superplastic forming is much higher than with rolling and sheet forming. The ability of materials to exhibit extensive plastic deformation generally the elongation is over 200% at an elevated temperature t 0. The relative positions of bed and ram in the press are. Hot working and cold working operatio slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
Metal forming is the main method of making metal products and semifinished products. This paper discussion will be made about the rolling process, the working principle of the rolling process along. Advances in metal forming expert system for metal forming. For instance, toughness is an important but hardtodefine material property. Superplastic forming an overview sciencedirect topics. Stress required for forming, yield or flow stress therefore depends on several factors, such as strain, strain rate, temperature etc. Mainly sheet metal process can be divided into three types. Sheet metal forming massachusetts institute of technology. Nptel provides elearning through online web and video courses various streams. Unconfined type explosive forming a gas bubble is also produced which expands spherically and then collapses. Important casting terms nptel course on manufacturing processes i, pradeep kumar et al. Self reading for your interestself reading for your interest defects in metal forming processesdefects in metal forming processes and their remedies.
Lecture series on manufacturing processes i by prof. Apr 12, 2018 41 videos play all principles of metal forming technology iit roorkee july 2018. Sheet stretch forming is a fast, economical, and accurate way to form a large panel from a metal sheet. This process is also known as electromagnetic forming. Metal forming and machining processes springerlink. In this sheet metal high velocity forming, the electrical energy stored in a series of capacitors is. Analysis and technology in metal forming 29 influence of strainrate i. Rolling is the deformation process of a metal that is widely used in the metal forming process. Sheetmetal characteristics elongation the capability of the sheet metal to stretch without necking and failure. Comparison of metal forming processescomparison of metal forming processes 34. Pdf civil engineering books huge collections subject wise free download. In this article we mainly focus on sheet metal cutting operations and. Nptel mechanical engineering manufacturing processes i.
Metal forming processes full notes ebook free download pdf. These manufacturing process som study notes will help you to get conceptual deeply knowledge about it. Transverse sheet stretch forming press fett up to 12 independently controlled axes allow for the forming of leading edge and fuselage parts. Nptel mechanical engineering forming powder forming r.
Nptel mechanical engineering forming sheet metal operations. It is done by passing the strip of the metal between the rollers. Powder metallurgy pm is a metal working process for forming precision metal components from metal powders. The process involves stretching the sheet to a calculated yield point and forming it over a tool.
Metal forming metal forming is a general term for a large group, that includes a wide variety of manufacturing processes. Superplastic forming involves stretching the material at least 200% beyond its original size, although the deformation can. In this article we mainly focus on sheet metal cutting operations and other two we will discuss into upcoming articles. The first one is sheet metal cutting, second one is sheet metal bending or forming and the last one is known as deep drawing. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 5 of 10 temperature.