Density is an important consideration when choosing an explosive. Lecture series on manufacturing processes i by prof. According to the speed of energy rate forming, the processes can be divided into the following categories. Explosive welding can be considered as a kind of hotpressing. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.
Sheet metal characteristics shearing, bending and drawing operations stretch forming operations formability of sheet metal test methods special forming processesworking principle and applications hydro forming rubber pad forming metal spinning introduction of explosive forming, magnetic pulse forming, peen. Herf high energy rate formingherf principles\key feature. The data collected in any survey must be presented in a form which allows the information to be clearly interpreted and understood by others. Me6302 manufacturing technologyi previous year question. Mod1 lec12 high energy rate forming processes youtube. Electromagnetic forming em forming or magneforming is a type of high velocity, cold forming. Explosive forming process high energy rate forming.
The required profile results from the explosive force that directly or indirectly deforms the metal. 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 forming processes are affected by the rates of strain used. With few exceptions, denser explosives give higher detonation velocities and pressures. Building materials and construction 140602 engineering geology 140604. Metal forming processes full notes ebook free download pdf. Basic mechanical engineering covers a wide range of topics and engineering concepts that are required to be learnt as in any undergraduate engineering course. Here the explosive is in the form of cylindrical package, enclosed in paper or polythene tubings. Potentially explosive chemicals chemicals when subjected to heat, impact, or friction, undergoes rapid chemical change, evolving large volumes of gases which cause sudden increase in pressure. This presentation may take the form of written report, bills of quantities, datasheets, drawings and in land surveying maps and plan showing the features on the land. High velocity forming of metals and high energy rate forming. High energy rate forming herf muhammed labeeb my06 introduction many metals tend to deform more readily under extra fast application of load in these forming processes large amount of energy is applied for a very short interval of time the parts are formed at a rapid rate, and thus these processes are also called high velocity forming hvf processes typically 20300 ms since the.
Download link is provided and students can download the anna university me6302 manufacturing technology i syllabus question bank lecture notes syllabus part a 2 marks with answers part b 16 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study. These three shaping methods can be considered competing processes. This presentation will focus on the different uses and methods of explosive forming in the aerospace as well as automotive industry. You can take a look at the introduction of connectedpdf. Strength of materials ace academy gate notes free download pdf. It can be used on materials for which a press setup would be prohibitively large or require an unreasonably high pressure, and is generally much cheaper than building a large enough and sufficiently highpressure press. An explosion may occur without an explosive, that is, without any material which contains intrinsically the energy needful to produce the explosion. I will also share the lecture notes and other ebooks in pdf download format. A weld joint is produced by means of a high velocity impact of one metallic mass onto another, aided by a controlled detonation with an explosive charge. Shearing, blanking, bending, stretch forming, deep forming.
Advantageso it can simulate a variety of other conventional metal forming techniques such as stamp or press forming and spin forming in a single operation. For free running explosives, the density is often specified as the pounds of explosives per foot of charge length in a given size borehole. Materials are subjected to complex states of stresses during forming. Form the tensile test data, we can determine flow stress, though this method has limitations. Explosive forming is a metalworking technique in which an explosive charge is used instead of a punch or press. The temperature of work is increases due to adiabatic heating. Applications and capabilities of explosive forming. Early patents relating to explosive forming appeared at the end of the 19th and at the beginning of the 20th century. Material deformation during sheet metal forming deformation analysis principal strain plane the analysis of deformation in sheet metal forming is often based on the two principal membrane strains. High energy rate forming is the forming of sheet metal by a high energy surge, delivered over a very short time. Electromagnetic forming emf is a noncontact forming technique. An overview of forging processes with their defects. Pdf results are presented of the development of explosive forming technology for metal sheets and plates. Stress required for forming, yield or flow stress therefore depends on several factors, such as strain, strain rate, temperature etc.
Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Press brake forming, explosive forming, hydro forming, electro hydraulic forming, and magnetic pulse forming. Feb 28, 2015 hi fellas, check out the ebook of manufacturing technology1 for mechanical,automobile and industrial production engineering students. Metal casting is a labour intensive process automation. High velocity forming free download as powerpoint presentation. Explosive forming, electro hydraulic forming magnetic pulse forming pneumatic mechanical high velocity forming. Nitrogen tetroxide n2o4 is another liquid oxidizer capable of forming powerful explosives. Lower and higher pairs, degrees of freedom, various types of mechanisms, their inversions and.
Electrical, electronics and communications engineering. High velocity forming forging explosive material scribd. Black powder, for example, may burn in the open air. Sharma, department of mechanical engineering, iit roorkee.
Nptel provides elearning through online web and video courses various streams. Strength of materials ace academy gate notes free download pdf for civil engineering gate, ies and psus government exams direct download links. High energy rate forming herf principleskey feature of herf. Explosive forming, magnetic pulse forming and electro hydraulic forming come under high energy rate high speed forming processes. Mar 25, 20 advantageso it can simulate a variety of other conventional metal forming techniques such as stamp or pressforming and spinforming in a single operation. Explosive welding is a solid state metal joining process used to create a metallurgical bond between two similar or dissimilar metals 1. In plastic welding or pressure welding, the pieces of metal to be joined are heated to plastic state and then forced together by external pressure. Metal forming is the final stage of metallurgical manufacturing permitting to produce metal ware used in national economy as the finished products or as the billet for further processing. In 70s, the explosive welding was intensively used in attempts to develop an economically effective. Explosives are chemical mixtures or compounds that, when subjected to heat, impact, or shock, are capable of undergoing a rapid decomposition that releases heat and gases, which, in turn, expand to form high pressures. Nptel, iit, lectures, courses, video, engineering, online. Metal forming processes indian institute of technology. The phenomenon, discovered by lavrentiev at the end of the ww ii 122, is an efficient way to bond together two similar or dissimilar materials.
Explosive welding an overview sciencedirect topics. It is an impulse or highvelocity forming method using pulsed magnetic field by application of lorentz forces to the work piece preferably made of highly electrically conductive material without having working medium and mechanical contact. Explosive forming is a process in which forces produced by an explosion are used to shape a workpiece. Improved lubrication if lubricating film is maintained.
Other readers will always be interested in your opinion of the books youve read. 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. Heat, light, mechanical shock and certain catalysts can initiate explosive reactions. No annoying ads, no download limits, enjoy it and dont forget to bookmark and share the love. Nptel mechanical engineering forming joint initiative of iits and iisc funded by mhrd page 3 of.
Metal forming is the main method of making metal products and semifinished products. How to download notes directly in pdf format from nptel. Rolling 99% content is from mechanical metallurgy dieter slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The explosive energy replaces the male part of the tool that is used in regular forming processes.
In order to manufacture a machine component, such as a wheel suspension arm for a car, one can choose metal forming, casting, or machining as the shaping method. Pdf me6302 manufacturing technology i books, lecture. Connectedpdf next generation pdf for the connected world leading edge technology that powers document intelligence, security, and collaborat. Divided into three parts, this book lays emphasis on explaining the logic and physics of critical problems to develop analytical skills in students. A punch in conventional forming is replaced by an explosive charge.
Mechanical engineering all subjects books and lecture. It is one of the oldest metalworking arts with its origin about some thousands of years back. Provide information for each individual owner, partner, and all other responsible persons see definition 3 in the trade or business operations identified in section a, block 2. Electro hydraulic forming powerpoint ppt presentation. International journal of scientific and research publications, volume 4, issue 6, june 2014 1 issn 22503153. Shock sensitive substances include acetylides, azides. The basic operations of a computer system form what is known as the computers instruction set. Sanok, aiaa 20003406, explosive joining for the mars sample return mission, 36 th aiaaasmesaeasee joint propulsion conference and exhibit, july 1719, 2000. Stresses beyond yield strength of the workpiece material is required. Industrial application of the electromagnetic pulse technology pdf. Advantages o it can simulate a variety of other conventional metal forming techniques such as stamp or press forming and spin forming in a single operation. An explosive substance is a solid or liquid substance or mixture of substances which is in itself capable by chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings. Metal forming is the main method of making metal products and. Detonation occurs when the rate of chemical decomposition is greater than the speed of sound.
Some examples of shapes obtained by forging process. Unlike other videos in this series, this video is not licensed under a creative commons license, due to restrictions required by the included images creatordistributor. Chapter i properties of explosives an explosive is a material. Metal casting processes indian institute of technology. If additional space is needed use a separate sheet. As of today we have 110,518,197 ebooks for you to download for free. Chemical reaction engineering nptel online videos, courses. Sheet metal forming massachusetts institute of technology. And the approach or method that is used to solve the problem is known as an algorithm. Nptel, an elearning initiative by the 7 indian institutes of technology and the indian institute of science with the support of the mhrd, govt. Conclusion hydroforming is an innovative forming process hydroforming is becoming more popular i. If you continue browsing the site, you agree to the use of cookies on this website. Manufacturing technology1 lecture notes,ebook,pdf download.
Since the forming of the metal occurs so quickly, desirable materials for herf will be ductile at high deformation speeds. Practically all metals, which are not used in cast form are reduced to some standard shapes for subsequent processing. Fundamentals of forming, quiz questions, fundamental concepts of metal forming. High energy rate forming herf processes introduction. My advice to you all students if you preparing gate 2019 or upsc ies. Studies on water hammer forming on sheet metal works. Sheet hydroforming shf is a technology that uses hydraulic fluid taken to. Forging is a metal working process in which useful shape is obtained in solid state by hammering or pressing metal. Majority of video courses on nptel do not offer lecture notes for download. Explosive forming is a broad term covering many process variations. Ppt electro hydraulic forming powerpoint presentation, free. Study material from nptel civil engineering department. Civil engineering department civil engineering department.
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