Design of steel structures nptel online videos, courses. This technique was discovered during efforts to manipulate iron into useful shapes. Learn for free, pay a small fee for exam and get a certificate. The method used in ancient days was forge or blacksmith welding. Other welding processes that produce fusion of the metals joined include electron beam welding and laser beam welding. Strength of materials nptel online videos, courses. One of the methods of classifying welded joints is the method used to effect the joint between metal pieces. Sanok, aiaa 20003406, explosive joining for the mars sample return mission, 36 th aiaaasmesaeasee joint propulsion conference and exhibit, july 1719, 2000. Advanced metal forming processes details of high energy rate forming. At end of the lecture, you will learn electron beam welding along with its applications. This high speed stream of electrons is tightly focused using magnetic fields and applied to the materials to be joined.
The beam of electrons creates kinetic heat as it impacts with the workpieces, causing them to melt and bond together. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures. Advanced manufacturing processes usb media storage type. The three most common types of structural members are the wshape wide flange, the sshape american standard i beam, and the cshape american standard.
Welding, technique used for joining metallic parts usually through the application of heat. Numerical solutions to thermal field and fluid flow in welding part 2 dissimilar welding. Advances in welding and joining technologies usb media storage type. Nptel provides elearning through online web and video courses various streams. Equipment used for electroslag welding operations electroslag welding is capable of welding plates with thicknesses ranging from 50 mm to more than 900 mm and welding is done in one pass. Electron beam welding machines are engineered for high performance with advanced computer controls, data logging and beam control. Highly concentrated beams of electrons impinge on the weld zone in electron beam eb welding. In terms of the application of flash butt welding to plates, onsite welding of line pipes, welding of rails, welding of marine structures and vessel mooring chains, etc. The major welding quality problem in those applications is weld cracking of the sheet being formed, and reducing defects in welded interfaces is called for. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos. Electron beam welding electron beam engineering, inc. Welding of advanced high strength steels for automotive apps media storage type. Tig gtaw and mig gmaw welding, resistance welding and thermit welding.
Design of steel structures civil engineering course from iit guwahati nptel lecture videos by prof. Seam welding, a continuous stream of spot welds, is used for making beams and box sections. Nptel syllabus advanced manufacturing processes video course course outline. Plasma arc machining process, diagram, advantages and.
For those outsourcing their electron beam welding, ptrs nadcap approved and faa certified electron beam welding job shop offers contract welding services. The use of electron beam welding in turbomachinery. This electron beam welding system was built in 1987 and operated by ptrs job shop department. The purpose of the welding handbook for maritime welders is to provide guidance in modern welding and related processes and to provide the welder with a source of practical information on the right solution to specific onboard welding problems.
Research on the application of electron beam welding, a highefficiency welding. Introduction to gas welding, cutting, arc welding and equipments. Details of electron beam welding ebw laser beam welding lbw ultrasonic welding usw 6 4. Electron beam welding systems, eb welders ptrprecision. Structural welding is a process by which the parts that are to be connected are heated and fused, with supplementary molten metal at the joint. Metal inert gas mig and metal active gas mag welding are gas metal arc welding gmaw processes that use heat created from a dc electric arc between a consumable metal electrode and a workpiece which melt together to create a weld pool that fuses to form a join. The current required is about 600 a at 40 to 50 volts although higher currents are. Electron beam eb welding is a fusion welding process whereby electrons are generated by an electron gun and accelerated to high speeds using electrical fields. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Nptel, iit, lectures, courses, video, engineering, online. Murugaiyan amirthalingam nptel coordinating institute.
These videos are provided by nptel elearning initiative. The weld morphology and the welding quality can be improved by adding active agents when welding 14,15. Certain arc and oxyfuel processes are also used for cutting metals. The main applications for this high efficiency welding process are. Nptel, online courses and certification, learn for free. Experience gained from user contact and welding training of crewmembers showed that. Welded blades were developed in the 1st millennium ce, the most famous being those produced by arab armourers at damascus, syria. Electron beam and plasma welding processes youtube. Manufacturing processes i nptel online videos, courses. Electron beam engineering provides electron beam welding services and laser welding services throughout the u. Ptrs shop has a variety of modern, 5axis cnc eb welders with either 60 kv or 150 kv beam generation systems capable of welding parts as small as a few grams up to ones weighing several. A relatively small depth of material will become molten, and upon cooling, the structural steel and weld metal will act as one continuous part where they are joined. Currently, he is working in the sheet metal industry as a designer. Additionally, he has interested in product design, animation, and project design.
Soil exploration lecture notes, notes, pdf free download, engineering notes, university notes, best pdf notes, semester, sem, year, for all, study material. Electron beam welding, despite a long history and widespread arc and laser technology, is still widely used in industry. Weldability, newer welding methods like plasma arc, laser beam, electron beam, ultrasonic, explosive and friction welding. Electron beam welding vs laser welding advantages and disadvantages by eb industries duration. Electron beam, plasma beam and ion beam machining video. Theory of machines institute of advanced studies in. In addition to making eb and laser welding equipment, ptr assists customers with weld process development and provides maintenance and spares support for electron beam welding systems.
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