Unconventional 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 used for. Sheet metal forming processes have been classified into conventional and unconventional forming processes. Material removal processes once again can be divided into two groups 1. Unconventional machining processes introduction and. The limitation of these processes is the need for skilled personnel. Dec 08, 2016 the basic difference between unconventional and conventional machining is that the tool and the workpiece never have a physical contact between them. Apart from that, the conventional or traditional machining generally produces a lower surface fin. Bulk, or massive, forming operations sheetforming operations sheet forming is alsoreferredtoasforming. Conventional manufacturing process routes seriously limit the freedom to fabricate parts of complex shapes economically, especially when small batches are required. The main difference between conventional and unconventional forming is the type of tools used in the process.
Advanced technology demands new materials with high strength and hardness for the sophisticated products with long life and reliability. Nonconventional metalforming processes are also known as nontraditional forming. Classification of unconventional machining processes. Both steps of deformation can be realised by processes shown in fig. Unconventional metal forming processes 12312016 jit 1 unit v by. Multiagency collaboration on unconventional oil and gas research. Mechanical working requires that the material may undergo plastic deformation during its processing. In march 2011, the white house released a blueprint for a secure energy future blueprint a comprehensive plan to reduce americas oil dependence, save consumers money, and make our country the leader in clean energy industries. On this channel you can get education and knowledge for general issues and topics. 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. Rajput, 2007, manufacturing processes, 899 pagesshopkeepers and master artisans in nineteenthcentury. Body language how to read others thoughts by their gestures, allan pease, jacqueline kent.
It is an impulse or highvelocity forming method using pulsed magnetic field by. Chemical methods of unconventional manufacturing processes are. Forming, press working and micro finishing processes. Nonconventional metal forming processes are also known as nontraditional forming. There are three main high energy rate forming processes. Existing conventional manufacturing techniques of traditional machining and forming are unable to cater these materials. Unconventional forming methods are used in the manufacture of prototypes, small series and verification of experiments. Tube hydroforming is one of the most popular unconventional metal forming processes which is widely used to form various tubular components. Electromagnetic forming em forming or magneforming is a type of high velocity, cold forming process for electrically conductive metals, most commonly copper and aluminium. Unconventional machining processes can be broadly classified into several types based on four main criteria. Forming technology can be used in forming by an elastic tools and by highvelocity forming.
This textbook is also useful to most of the students who are preparing for competitive exams. The workpiece is reshaped by high intensity pulsed magnetic fields that induce a current in the workpiece and a corresponding repulsive magnetic field, rapidly repelling. While making a part from raw material, one may require bulk removal of material, forming cavitiesholes and finally finishing as per the parts requirements. Unconventional machining processes form an important part of the chapter of machining processes in the subject of manufacturing engineering for gate mechanical engineering. Jain department of mechanical engineering, indian institute of technology kanpur, kanpur208016, india. Conventional machining process involved tool wearing as there is a physical contact between the tool and the work piece. Unconventional forming explosive material inductor free. Me6004 unconventional machining processes lecture notes ppt. The basic difference between unconventional and conventional machining is that the tool and the workpiece never have a physical contact between them. Biomedical industry is a clear example of an application that is constrained by conventional manufacturing, because it requires reproduction of very complex shapes customized for each. Multiagency collaboration on unconventional oil and gas. Unconventional machining processes free download as powerpoint presentation. A textbook of manufacturing technology manufacturing processes, r. The book unconventional machining processes offers an indepth study on various unconventional machining processes.
Translocation of materials within the soil profile is primarily due to gradients in water potential and chemical concentrations within the soil pores. Forming by liquids belong to nonconventional forming methods, for which liquid is. Unconventional sheet metal forming processes are more and more employed in the automotive and aircraft industries in order to prod uce large body panels. Classification of unconventional machining processes was mainly on the basis of the nature of energy employed in machining process. Bulk deformation atures relative to the melting point of the metal. In these processes, unconventional sources of energy such as explosive forming, electrohydraulic forming, magnetic pulse forming, petroforge and drop. 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. Hot working occurs at temperatures above tjlle recrystallization temperature of the metal. The part below was machined on a 5axis makino a77 at boeing using a 815k rpm spindle speed, and a feed of 240 ipm vs 60 ipm conventional machining. Unconventional forming processes, principle, working and applications of high energy forming processes such as explosive forming, electromagnetic forming, electrodischarge forming, water hammer forming, explosive compaction etc. Explosive forming magnetic forming, and electro hydraulic forming classification 12312016 jit 4 5. Introduction to nontraditional machining iit kanpur. Biomedical industry is a clear example of an application that is constrained by conventional manufacturing, because it requires reproduction of very complex shapes customized for each patient. Stresses beyond yield strength of the workpiece material is required.
Unconventional manufacturing process unconventional machining process unconventional forming process need for unconventional machining process harder and difficult to machine materials, can be machined easily and precisely. The two possible schemes of extrusion are presented in the picture. Unconventional machining processes jagadeesha t 2016 520 pp paperback isbn. In this process, the workpiece in the form of slab or plate is. This book addresses issues essential to unconventional machining processes, covering all modern machining processes such as mechanical processes, electrochemical and chemical metal removal processes, and thermal metal removal processes. Metal forming processes indian institute of technology. Unconventional machining processes textbook pdf free download. This book is mainly useful for mechanical engineering students.
Pdf mechatronic contouring system for unconventional. Unconventional machining processes textbook pdf free. Metal forming is possible in case of such metals or alloys which are sufficiently malleable and ductile. The characteristics of the shop equipment for metal forming and technology of the main metal forming methods have been given in separate sections. Feb 27, 2017 on this channel you can get education and knowledge for general issues and topics. And also the below mentioned article provides a lecture note on metal forming processes. We also use unconventional machining processes to machine soft materials, in order to get better dimensional accuracy. By this process, tubes are formed into different shapes. Inthebroadestand most accepted sense, however, the term forming is used to describe bulk as well as sheetforming processes. Unit5 unconventional manufacturing processes capacitor. Electro chemical machining ecm, micro electrochemical machining, electroforming the journals and reports also cover the hybrid approach being taking place by combining different actions to make use of the combined advantages and to avoid or reduce some adverse effects the. The temperature of work is increases due to adiabatic heating. Semiatin, air force research laboratory, materials and manufacturing directorate metalworking consists of deformation processes in which a metal billet or blank is shapedbytoolsordies. Metal forming process an overview sciencedirect topics.
Zoha nasir assistant professor jit, barabanki slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Development of unconventional forming methods journal of. Need for unconventional machining process i harder and difficult to machine materials iican be machined easily and precisely. Unconventional machining processes textbook is one of the famous textbook for engineering students. Difference between conventional and nonconventional machining processes are. Unconventional metal forming process linkedin slideshare. Eme012pur40911re 1 turn over following paper id and roll no. The main reasons for choosing nontraditional machining processes are. Mar 16, 2018 chemical methods of unconventional manufacturing processes are. Dec 31, 2016 unconventional metal forming processes 12312016 jit 1 unit v by. The workpiece is reshaped by high intensity pulsed magnetic fields that induce a current in the workpiece and a corresponding repulsive magnetic field, rapidly repelling portions of the workpiece. Van tyne colorado school of mines, golden, colorado, u. Department of mechanical engineering ubmc303 manufacturing technology i question bank unit 4 sheet metal processes part a 2 marks 1.
Unconventional forming explosive material inductor. Buy theory of plasticity and metal forming processes by dr. Pdf electromagnetic forming emf is a noncontact forming technique. Thedesignandcontrolof such processes depend on the characteristics of the workpiece material, the conditions at the. In this article we will discuss about the metal forming processes. Multiagency collaboration on unconventional oil and gas research overview. High energy rate forming herf processes introduction. In this short notes section we will cover the first unconventional machining process electric discharge machining edm. Nontraditional manufacturing processes or unconventional machining processes conventional machining processes mostly remove material in the form of chips by applying forces on the work material with a wedge shaped cutting tool that is harder. Other unconventional manufacturing processestechniques 1 4. In extrusion, for example, the flow stress considerably changes during the forming process as the material gets work hardened considerably. Material is in the first stage of the forming process extruded in a. Unconventional machining processes textbook pdf free download unconventional machining processes textbook pdf free download. Improved lubrication if lubricating film is maintained.
Difference between conventional and nonconventional. Jun 20, 2016 the main reasons for choosing nontraditional machining processes are. The forming processes are affected by the rates of strain used. Dec 10, 2015 me6004 unconventional machining processes lecture notes ppt. Download theory of plasticity and metal forming processes. 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. In this sense, they are no more unconventional or nontraditional. Unconventional machining processes machining metalworking. Jsou popsany jejich principy, vyhody a nevyhody pri uziti v praxi. Pdf mechatronic contouring system for unconventional sheet.
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