Soldering And Brazing Nptel Pdf

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soldering and brazing nptel pdf

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Embed Size px x x x x Instructional objectivesAt the end of this lesson, the student would be able to : i ii iii iv v vi vii viii ix Identify the necessity of manufacturing Define with examples the concept of manufacturing List the main classifications of the manufacturing processes with examples State the main purposes of machining Define with examples the concept of machining State with example the principles of machining State with examples the main requirements for machining State with examples the main functions of Machine tools Define the concept of machine tools.

Advances in welding and joining technologies video.

additive manufacturing nptel pdf

Embed Size px x x x x Instructional objectivesAt the end of this lesson, the student would be able to : i ii iii iv v vi vii viii ix Identify the necessity of manufacturing Define with examples the concept of manufacturing List the main classifications of the manufacturing processes with examples State the main purposes of machining Define with examples the concept of machining State with example the principles of machining State with examples the main requirements for machining State with examples the main functions of Machine tools Define the concept of machine tools.

Production or manufacturing can be simply defined as value addition processes by which raw materials of low utility and value due to its inadequate material properties and poor or irregular size, shape and finish are converted into high utility and valued products with definite dimensions, forms and finish imparting some functional ability.

A typical example of manufacturing is schematically shown in Fig. A lump of mild steel of irregular shape, dimensions and surface, which had almost no use and value, has been converted into a useful and valuable product like bolt by a manufacturing process which imparted suitable features, dimensional accuracy and surface finish, required for fulfilling some functional requirements.

Value added Fig. Production Engineering covers two domains: a Production or Manufacturing Processes b Production Management a Manufacturing Processes This refers to science and technology of manufacturing products effectively, efficiently, economically and environment-friendly through Application of any existing manufacturing process and system Proper selection of input materials, tools, machines and environments. Improvement of the existing materials and processes Development of new materials, systems, processes and techniques All such manufacturing processes, systems, techniques have to be Technologically acceptable Technically feasible Economically viable Eco-friendly Manufacturing Science and technology are growing exponentially to meet the growing demands for; i Increase and maintenance of productivity, quality and economy specially in respect of liberalisation and global competitiveness.

Making micro and ultra precision components for the modern electronics, computers and medical applications Processing exotic materials, coming up with rapid and vast advent of science and technology like aerospace and nuclear engineering. It mainly refers to planning, coordination and control of the entire manufacturing in most profitable way with maximum satisfaction to the customers by best utilization of the available resources like man, machine, materials and money.

It may be possible to manufacture a product of given material and desired configuration by several processes or routes as schematically indicated in Fig. The various process routes may be different in respect of principle, technique, quality of products and time requirement and cost of manufacture. The best one is to be selected based on some criteria. Achieving the goal in manufacturing requires fulfillment of one or more of the following objectives: reduction of manufacturing time increase of productivity reduction of manufacturing cost increase in profit or profit rate The most significant and ultimate objective, i.

Production management integrates and accomplishes all such essential activities leading to maximum benefits by best utilization of the resources and strategies.

It is extremely difficult to tell the exact number of various manufacturing processes existing and are being practiced presently because a spectacularly large number of processes have been developed till now and the number is still increasing exponentially with the growing demands and rapid progress in science and technology. However, all such manufacturing processes can be broadly classified in four major groups as follows: a Shaping or forming Manufacturing a solid product of definite size and shape from a given material taken in three possible states: in solid state e.

Preforming like casting, forging etc. For that such preformed parts, called blanks, need semi-finishing and finishing and it is done by machining and grinding. Grinding is also basically a machining process. Machining to high accuracy and finish essentially enables a product fulfill its functional requirements improve its performance prolong its service b Principle of Machining The basic principle of machining is typically illustrated in Fig.

A metal rod of irregular shape, size and surface is converted into a finished rod of desired dimension and surface by machining by proper relative motions of the tool-work pair. Additionally some environment called cutting fluid is generally used to ease machining by cooling and lubrication.

The physical functions of a Machine Tool in machining are: firmly holding the blank and the tool transmit motions to the tool and the blank Version 2 ME IIT, Kharagpur.

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Version 2 ME IIT, Kharagpur A lump of mild steel of irregular shape, dimensions and surface, which had almost no use and value, has been converted into a useful and valuable product like bolt by a manufacturing process which imparted suitable features, dimensional accuracy and surface finish, required for fulfilling some functional requirements. Improvement of the existing materials and processes Development of new materials, systems, processes and techniques All such manufacturing processes, systems, techniques have to be Technologically acceptable Technically feasible Economically viable Eco-friendly Manufacturing Science and technology are growing exponentially to meet the growing demands for; i Increase and maintenance of productivity, quality and economy specially in respect of liberalisation and global competitiveness Version 2 ME IIT, Kharagpur ii iii Making micro and ultra precision components for the modern electronics, computers and medical applications Processing exotic materials, coming up with rapid and vast advent of science and technology like aerospace and nuclear engineering.

Processes Input raw material Output product Fig. Cm Production management integrates and accomplishes all such essential activities leading to maximum benefits by best utilization of the resources and strategies.

Version 2 ME IIT, Kharagpur d Regenerative manufacturing Production of solid products in layer by layer from raw materials in different form: liquid e. The physical functions of a Machine Tool in machining are: firmly holding the blank and the tool transmit motions to the tool and the blank Version 2 ME IIT, Kharagpur provide power to the tool-work pair for the machining action. Quiz Test:Sel. Switching Activity Nptel. Nptel Docket.

Isa bus nptel. Nptel Welding.

additive manufacturing nptel pdf

For each layer, the laser beam traces a cross-section of the part pattern on the surface of the liquid resin. Additive manufacturing AM , broadly known as 3D printing, is transforming how products are designed, produced, and serviced. AM enables on-demand production without dedicated equipment or tooling, unlocks digital design tools, and offers breakthrough performance and … This process is known as "slicing. Additive manufacturing technologies are widely used in injection moulding and metal casting industries for a new mould design and manufacturing. To save time some models permit two modes; a fully dense mode and a sparse mode that save time but obviously To keep up with the latest technology on the market, also the robot gripper industry has … Additive manufacturing techniques create 3-D objects directly from a computer model, depositing material only where required. Produce desired dimensional accuracy and surface finish.

This article presents an introduction to brazing, including information on its mechanics, advantages, and limitations. It reviews soldering with emphasis on chronology, solder metals, and flux technology. The article also provides useful information on mass, wave, and drag soldering. It presents a table which contains information on the comparison of soldering, brazing, and welding. Melvin M.

For most enterprises, the long term goal is to stay in business, grow and make profits. Additive manufacturing technologies are widely used in injection moulding and metal casting industries for a new mould design and manufacturing. Additive manufacturing techniques create 3-D objects directly from a computer model, depositing material only where required. The following pages guide the reader through the steps required to produce components via the Powder Metallurgy route, highlighting the material choices, design considerations and economic advantages of the process. AM enables on-demand production without dedicated equipment or tooling, unlocks digital design tools, and offers breakthrough performance and … additive manufacturing AM , also called 3D-printing.

Industrial Engineering

Casting: zero process Forming: zero process Machining: negative process Joining welding : positive process. Welding and its comparison with other manufacturing processes Welding is one of the most commonly used fabrication techniques for manufacturing. Residual stress are induced in joined components development of tensile residual stresses adversely affects the tensile and fatigue properties of work. Simple shape components to be joined are partially melted Temperature of the base metal during welding in and around the weld varies. Reliability of weld joint is poor.

additive manufacturing nptel pdf

WELDING SCIENCE AND TECHNOLOGY Prepared under the direction of the Welding Handbook Committee

Welding: Welding is a reliable, permanent and inexpensive joining technique that produces a coalescence of materials. This is often done by local melting the work pieces and adding a filler material to form a pool of molten material that cools to become a strong joint, with pressure sometimes used in conjunction with heat, or by itself, to produce the weld. Welding technologies also include methods for welding metals, dissimilar metals, polymers, and ceramics, as well as emerging composite and engineered materials. Brazing: Brazing is also a permanent joining technique of two metal work pieces by means of a filler material usually a brass; at a temperature above its melting point but below the melting point of either of the materials work pieces being joined.

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 - Извините за беспокойство. Повернувшись, он направился через фойе к выходу, где находилось вишневое бюро, которое привлекло его внимание, когда он входил. На нем располагался щедрый набор фирменных открыток отеля, почтовая бумага, конверты и ручки. Беккер вложил в конверт чистый листок бумаги, надписал его всего одним словом: Росио - и вернулся к консьержу. - Извините, что я снова вас беспокою, - сказал он застенчиво.  - Я вел себя довольно глупо.

Welding and Joining Techniques

Сьюзан, глядя на мультимедийный клип, понимала, что все кончено. Она следила за смертью Танкадо - в который уже .

Конец веревочки. Он набрал номер. - Escortes Belen, - ответил мужчина. И снова Беккер изложил свою проблему: - Si, si, senor.

В конце концов пришлось смирить гордыню и вызвать тебя. Сьюзан это позабавило. Стратмор был блестящими программистом-криптографом, но его диапазон был ограничен работой с алгоритмами и тонкости этой не столь уж изощренной и устаревшей технологии программирования часто от него ускользали. К тому же Сьюзан написала свой маячок на новом гибридном языке, именуемом LIMBO, поэтому не приходилось удивляться, что Стратмор с ним не справился.

Ключ к шифру-убийце - это число. - Но, сэр, тут висячие строки.

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  1. Maria R. 28.05.2021 at 07:10

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