The rigidplastic finiteelement method was used to analyze two new problems of metalforming processes. Recent advances in metal forming processes authorstream. Superplastic forming definition a process for shaping superplastic materials, a unique class of crystalline materials that exhibit exceptionally high tensile ductility with neck free elongation. They include a very wide range of consumer and industrial products, such as beverage. 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.
In specific, spf is a hot forming process in which sheets of superplastic grade aluminum are heated and forced onto or into single surface tools by. Rolling is the deformation process of a metal that is widely used in the metal forming process. Stress, strain, elasticity and plasticity stress transformation and mohr s circle. The author highlights recent developments of metal forming. Sheet metal forming massachusetts institute of technology. Practically all metals, which are not used in cast form are reduced to some standard shapes for subsequent processing. Nptel provides elearning through online web and video courses various streams. Sep 25, 2011 fundamentals of metal forming overview of metal forming material behavior in metal forming temperature in metal forming.
Ppt metal forming processes powerpoint presentation. Hot working and cold working operatio slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In most cases of manufacturing, such cold forming is done at room temperature. Metal forming processes, also known as mechanical working processes, are. Module 3 selection of manufacturing processes nptel figure 3. The conventional hydroelectric power stations are usually located overground at the foot of a dam or a hill slope on the banks of a river. Advances in sheet metal forming technologies 63 fig. Draw beads a schematic illustration of a draw bead.
Caddell solution manual principles of corrosion engineering and corrosion control zaki ahmad. This lecture describes the fundamentals, working principles, advantages, disadvantages and applications of hot and cold working. This article presents the technique of limit analysis, both upper and lower bound. Metal forming is a very important manufacturing operation.
Fundamentals of metal forming overview of metal forming material behavior in metal forming temperature in metal forming. During the process of free forging the reduction of the forging piece height is realized between two parallel surfaces of ham mer heads, and the flow of metal in the transverse direction is not limited by the shape of the heads. Some common metal forming processes are schematically given in fig 1. Metal casting processes indian institute of technology. If you continue browsing the site, you agree to the use of cookies on this website. It is done by passing the strip of the metal between the rollers. Pdf civil engineering books huge collections subject wise free download. The rigidplastic finiteelement method was used to analyze two new problems of metal forming processes. Buy technology of metal forming processes by surender kumar pdf online. Rolling 99% content is from mechanical metallurgy dieter slideshare uses cookies to improve functionality and performance, and to provide you.
Metal forming processes metal forming usually include the process of transformation processes on a metal sheet. Yieldpoint elongation lueders bands on lowcarbon steels and almg alloys. Advances in metal forming expert system for metal forming. The term pressworking or press forming is used commonly in industry to describe general sheet forming operations, because they typically are performed on presses. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Sheetmetal characteristics elongation the capability of the sheet metal to stretch without necking and failure. If coefficient of friction becomes very high it leads to a situation called sticking friction. Introduction to manufacturing processes casting processes. Principles of metal forming technology course swayam. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Powder metallurgy pm is a metal working process for forming precision metal components from metal powders. Fundamental concepts of metal forming technology nptel definitions and classification of metal forming processes. Introduction to rolling processes introduction rolled productsrolling.
Understanding basic principles of metal forming and further being applied by. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 7 of. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Superplastic forming definition a process for shaping superplastic materials, a unique class of crystalline materials that exhibit exceptionally high tensile ductility. Metal sheet is changed into several other forms as sheet, wires, plates etc. The fundamental of metal forming theory, the theories of processes of rolling, forging and stamping as well as drawing and pressing extrusion have been given. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Large set of manufacturing processes in which the material is deformed plastically. Luders bands can be eliminated by coldrolling the thickness by 0. Introduction to metal forming technology classification of metal working processes. Many new casting processes have been developed which can take into consideration the aspects of dimensional accuracy and surface finish. 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. In extrusion, for example, the flow stress considerably changes during the forming process as the material gets work hardened considerably.
Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 1 of sheet metal operations other sheet metal forming processes r. In forming processes, such as forging, the instantaneous flow stress can be found from the flow curve, as the stress required to cause a given strain or deformation. Manufacturing process study notes handwritten free pdf. The rolling process is a metal forming process, in which stock of the material is passed between one or more pairs of rollers in order to reduce and to maintain the uniform thickness. The characteristics of the shop equipment for metal forming and technology of the main metal forming methods have been given in separate sections. Rolling 99% content is from mechanical metallurgy dieter slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Ghosh, dept of metallurgical and materials engineering keywords. It provides a detailed discussion of specific forming processes, such as deep drawing, rolling, bending extrusion and stamping. Under the action of such forces, the shape and size of metal piece undergo a change. Module 3 selection of manufacturing processes nptel. Aug 20, 2017 this lecture describes the fundamentals, working principles, advantages, disadvantages and applications of hot and cold working. Technology of metal forming processes get best books pdf.
Various metal forming techniques and their analysis, viz. Forming nptel web course free ebook download as pdf file. Sheetmetal forming includes cutting and forming operations performed on relatively thin sheet of metal typical sheet metal. 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. Metal sheet forming is done in many metal forming companies in many countries. When compared to hot working, coldworking processes have certain distinct advantages.
Manufacturing processes i nptel online videos, courses. Deformation processes exploit a remarkable property of metals, which is their ability to flow. Sheet metal forming processes and applications asm. Metal casting foundry technology, metal forming, metal joining welding, machining and machine tool operations, limits, fits and tolerances, metrology and inspection. Coefficients of friction in forming processes are quiet high. Ppt metal forming processes powerpoint presentation free. Chandramouli associate deanresearch sastra university, thanjavur6 401. Stresses beyond yield strength of the workpiece material is required. Metal in powder form is costlier than in solid form. Lecture 1 introduction to metal forming technology.
Sheet metal forming processes mustansiriyah university. Classification of forging processes quiz questions. Other topics include relatively new technologies, such as warm forming of magnesium and aluminum alloys, forming of advanced highstrength steels ahss, and hot stamping. Fundamentals of forming fundamental concepts of metal forming. Metal forming processes full notes ebook free download pdf. 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. Lecture series on manufacturing processes i by prof. Manufacturing companies producing metals supply metals in form of ingots which are obtained by casting liquid metal into a square cross section.
Sheet metal forming methods are one of the most popular processes of obtaining finished products, especially in aerospace, automobile, and defense industries. Exact analytical solutions for metalforming processes and operations are. Mechanical engineering manufacturing processes i nptel. Definitions and classification of metal forming processes. Most of the coldworking squeezing processes have identical hotworking counterparts or are extensions of them. Metal spinning is a term used todescribe the forming of metal into seamless, axisymmetric shapes by a combination of rotational motion and force ref 14. This process is mainly focused on the crosssection of the ingot or the metal which is forming. Fundamental concepts of metal forming technology nptel.
Sometimes, however, the working may be done at elevated temperatures that will provide increased ductility and reduced strength, but will be below the recrystallization temperature. Apr 12, 2018 principles of metal forming technology. Lowcarbon steel is the most commonly used sheet metal because of its low cost and. The primary reasons for deforming cold rather than. Mainly by this process, we reduce the thickness of the metal. Following topics are covered in manufacturing process handwritten notes. Metal forming processes full notes ebook free download pdf practically all metals, which are not used in cast form are reduced to some standard shapes for subsequent processing.
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