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