Knowing the final strain in the forming process, one can calculate flow stress using above equation. Nowadays the engineering and planning process in sheet metal forming is fundamentally supported by cad and cae systems. Because of some external perturbations, the tool starts a damped oscillation relative to the workpiece, and the surface of the workpiece becomes wavy. Form milling cutters face milling cutters end milling cutters cutting conditions. Nptel syllabus manufacturing processes i video course metal forming elastic and plastic deformation. After the source program has been entered into a file, then proceed to have it compiled. The physical basis of this phenomenon is well known in the literature. Advances in sheet metal forming technologies 65 special presses to stand for high pressures up to 80 mpa in the pressure chamber.
The components with cross holes cannot be produced easily using metal forming process. Metal in powder form is costlier than in solid form. The forming processes are affected by the rates of strain used. Mechanical engineering manufacturing processes i nptel. Ppt metal forming processes powerpoint presentation. Me 206 manufacturing processes 1 department academic. In cold working process the strain hardening which occurs as a result of mechanical working, does not get relieved. In hot working, metal may get softened after hot deformation process. Plastic properties of metals are used during the process of metal forming. Eliminate questionable points and calculate a new standard deviation for the adjusted data.
All, aicte, cec, ignou, iimb, ncert, nios, nitttr, nptel, ugc. Process control and instrumentation nptel online videos. Most manufacturing environments fit into one of five general categories. Lecture notes process instrumentation and control 1ecd03. Building materials and construction 140602 engineering geology 140604. Nptel course on manufacturing processes i, pradeep kumar et al. So material processing technology in which parts are produced from metallic powders. Electromagnetic forming is a popular high energy rate forming process that uses a magnetic surge to form a sheet metal part.
This course emphasizes handson training exercises credit 3 2 lecture, 1 lab prerequisites. In such cases, an average flow stress is determined from the flow curve. Metal casting is a labour intensive process automation. The five types of manufacturing processes i t may be surprising to learn that many engineers with great talent and a depth of experience have a hard time answering questions about the types of manufacturing environments that exist in their company. Wolfram volk, pierre charvet bmw ag, munich, germany summary. Lecture series on manufacturing processes i by prof. This paper presents basic phenomena as well as other important effects which are linked to velocity as a process parameter. Software evolution the process of developing a software product using software engineering principles and methods is referred to as software evolution. Review of sheet metal forming simulation progress to date. Manufacturing companies producing metals supply metals in form of ingots which are obtained by casting liquid metal into a square cross section.
Civil engineering department civil engineering department. Definitions and classification of metal forming processes. Buy personnel management and industrial relations book online at best prices in india on. Some courses might have presentations or quiz papers uploaded, but rest of them just have transcripts which is pretty useless to refer as notes. The rolling process allows close loop at a high speed that provides high and premium quality material. What is the procedure of registration for nptel free. Review of sheet metal forming simulation progress to date, future developments trevor dutton dutton simulation ltd abstract sheet metal forming simulation is a well established application of lsdyna.
Stanford university, stanford, galiji 94305, usa university. So, you want to download all of the video lectures for a course in nptel. Sheet metal forming massachusetts institute of technology. A capacitor bank is charged up and a large electrical surge is sent through the coil. For mild steel, recrystallization temperature range may be taken as 550650c.
Software engineering is the establishment and use of sound engineering principles in order to obtain economically software that is reliable and work efficiently on real machines. These manufacturing process som study notes will help you to get conceptual deeply knowledge about it. How can i download notes directly in pdf format from nptel. Mar 17, 2016 higher mount of force and energy is required for metal forming process compared to other manufacturing methods. Metal forming processes indian institute of technology. Analysis clearance 48% but sometime 1% of thickness too small fracture does not occur requiring more force.
Exam 16 february 2012, questions and answers midterm exam 5 march 2014, questions and answers midterm exam 15 april 2011, questions final exam 27 april 20, questions final exam april 2012, questions and answers final exam 12 april 2014, questions and answers final. Ghosh,department of metallurgy and material science,iit kharagpur. Apart from that, another crucial significance of the rolling process is the least tolerance. Pressure forming can achieve the high quality and detailed look of injection molding, without the expensive tooling costs. Metal forming processes full notes ebook free download pdf. A poorly designed process results in overuse of manufacturing resources men and machines. Process control and instrumentation nptel online videos, courses iit video lectures. Manufacturing process study notes handwritten free pdf. It is used to make a variety of highstrength components for automotive, aerospace, and other applications. Gate chemical engineering handwritten notes by air. Recent advances in metal forming processes authorstream presentation.
Most problems in sheet metal forming come from a bad control of holding, restraining and springback. Metal forming is a very important manufacturing operation. Log in register lost password viewing 1 post of 1 total author posts december 10, 2018 at 7. Go to national programme on technology enhanced learning step 2. Improved lubrication if lubricating film is maintained.
Furthermore, it can be concluded that the metal forming process can be conducted at a low cost due to the rolling process. In the electromagnetic process, also called magnetic pulse forming, an electric coil is placed near a metal work piece. Lecture 1 introduction to metal forming technology lecture 2 classification of metal working processes lecture 3 behavior of materials lecture 4. How to download all of the lectures for a course in nptel quora. Manufacturing processes i nptel online videos, courses iit video lectures. In extrusion, for example, the flow stress considerably changes during the forming process as the material gets work hardened considerably. The rubber pads can have a general purpose shape, like a membrane. A process may execute in a processor in one timeslice and another processor in the next time slice this leads to process migration processor affinity process modifies entries in cache as it executes. Home forums breezeworks heat treatment pdf nptel tagged. Classle is a digital learning and teaching portal for online free and certificate courses. 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. Nptel, an elearning initiative by the 7 indian institutes of technology and the indian institute of science with the support of the mhrd, govt.
The course is aimed at teaching the pros and cons of different processes, so that one can apply this knowledge to the selection of a process for making a part to the required level of accuracy and in required time. High energy rate forming herf processes introduction. Generally, process improvements are made regularly with new efficiencies embedded within the process. Chapter 2 cmos processinglayout supplement ii twintub cmos process 1. The billet is fed in axial direction and it receives the rotational movement contacting the rolls. Velocity is probably the most important parameter in manufacturing, influencing performance, cost, productivity, energy and resources efficiency as well as safety and environmental issues. 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. Web courses are available in html format, pdf downloads with illustration, animation 2d, 3d, lab demos, video clippings course name. In fact as the metal or alloys gets progressively strain hardened, more and more force is required to cause further plastic deformation. Provide separate optimization of the ntype and ptype transistors 2.
Since metal forming process is an important manufacturing route to fabricate bulk storage and processing equipments. Pdf comparison of labview with sap2000 and nonlin for. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of 10. The other forming processes or other manufacturing processes are like casting welding machining all that and there are other varieties. Roll forming process of c z cz purlin interchangeable machine the roll forming process works by passing sheet metal through a series of rollers, with each of these rollers adding shape to the metal as it passes through. Make it possible to optimize vt, body effect, and the gain of n, p. Here, you can teach online, build a learning network, and earn money.
By using air pressure on the back side of the sheet during the forming process, textures, undercuts and injection molding details can be achieved. Additionally, different kinds of joining processes welding and their process parameters are discussed. Effect of strain rate on forming process higher the rate of strain hardening, lower is the recrystallization temperature. Velocity effects in metal forming and machining processes. Virtual engineering and planning process in sheet metal forming dr. Advanced manufacturing process for micro system fabrication nptel. Buy personnel management and industrial relations book online. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Sheet metal forming with elastic tools is commonly used in. Continuous process improvement is a critical part of lean manufacturing. Chemical engineering video lectures nptel video lectures. Metal forming metal forming is a general term for a large group, that includes a wide variety of manufacturing processes.
To make students comfortable to get the details regarding this subject at their home. The behavior of materials under processing conditions. The temperature of work is increases due to adiabatic heating. Apr 07, 20 nptel was the brainchild proposal which was put forward by the five main iits national program in technology enhanced learning nptel. Nptel provides elearning through online web and video courses various streams. Little or no material is removed during the forming process. Except the forging operation, all other metal forming process are used for producing uniform cross sectioned components only. Comparison of labview with sap2000 and nonlin for structural dynamics problems. Material balance notes irven rinard department of chemical. Practically all metals, which are not used in cast form are reduced to some standard shapes for. 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. Electroforming definition electroforming is a metal forming process that forms thin parts through the electroplating process. In this process, the workpiece in the form of slab or plate is. The course is meant as an introduction towards primary manufacturing processes such as casting, forming and welding.
Costly process has a bitmask that tells what processors it can. More than 90% of smelted metal is processed by different methods of metal forming. Advances in sheet metal forming technologies 63 fig. Majority of video courses on nptel do not offer lecture notes for download.
The rolls work together to form the desired crosssection. Fundamentals of metal forming overview of metal forming material behavior in metal forming temperature in metal forming. Fill your details like your full name, mobile no,college name etc. Moving on, let us see some new processes like high energy rate forming process, then rapid prototyping process and microwave material processing techniques. Migration requires all these memories to be repopulated. Cutting and forming thin sheets of metal usually performed as cold working sheet metal 0. Nptel mechanical engineering forming sheet metal operations other sheet. 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. The overall investment of underground machine hall is less than those of the superstructure of a. Metal forming processes are characteristic in that the metal being processed is plastically deformed to shape it into a desired geometry.
Production of the articles made of wood, stone, ceramic etc. One of the most important causes of instability in the cutting process is the socalled regenerative e. Metal forming is the main method of making metal products and semifinished products. There are four basic production processes for producing desired shape of a product. Stresses beyond yield strength of the workpiece material is required. Recrystallization temperature of low melting point metals like lead, zinc and tin, may be taken as room temperature. Manufacturing processes i nptel online videos, courses. Beside the full 3d design process of parts and tools the simulation of sheet. Study material from nptel civil engineering department. A flow sheet material balance shows the flow rates and. Powder metallurgy pm is a metal working process for forming precision metal components from metal powders. Fundamental concepts of metal forming technology nptel. Forging process analysis and preform design by harshil parikh, bhavin mehta, jay gunasekera department of mechanical engineering ohio university, athens, ohio 45701 rob mayer, president queen city forging company, cincinnati, ohio 45226 abstract the purpose of this paper is to optimize the forging process and reduce the required force.
Hot and cold working processes rolling, forging, extrusion, swaging, wire and. Metal casting processes indian institute of technology. The subject focuses on knowledge and understanding of various manufacturing techniques and equipments, the. This is not usually possible with the vacuum forming process. Explosive forming is best described as a these shortrun applications are the short lead process in which metal parts are formed by the times required and minimum expenditures for high pressures resulting from the detonation of tooling. During the process of cross rolling the rolls are rotating in the same direction. Hot working and cold working operatio slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. A bank of capacitors is first charged with high voltage, and then discharged across a gap between two electrodes. Chapter 8 conclusions and future scope in this chapter, the contributions and the limitations of this research work are highlighted and future research recommendations are explained. Injection molding complex shapes of various sizes, eliminating assembly. Email print pdf such as ocean engineering, biotechnology, mining and metallurgy. Virtual engineering and planning process in sheet metal forming. Process design is the ensemble of operations leading from the design geometry to the dieface. Non traditional manufacturing processes an overview introduction nontraditional manufacturing processes is defined as a group of processes that remove excess material by various techniques involving mechanical, thermal, electrical or chemical energy or combinations of these energies but do not use a sharp cutting tools as it needs to be.
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