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Wire Drawing

Introduction In drawing, the cross section of a long rod or wire is reduced or changed by pulling (hence the term drawing) it through a die called a draw die (Fig. 7.1). Thus, the difference between drawing and extrusion is that in extrusion the material is pushed through a die, whereas in drawing it is pulled through it. Although the presence of tensile stresses is obvious in drawing, compression also plays a significant role because the metal is squeezed down as it passes through the die opening. For this reason, the deformation that occurs in drawing is sometimes referred to as indirect compression. Drawing is a term also used in sheet metalworking. The term wire and bar drawing is used to distinguish the drawing process discussed here from the sheet metal process of the same name. Rod and wire products cover a very wide range of applications, including shafts for power transmission, machine and structural components, blanks for bolts and rivets, electrical wiring, cables,.....
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Role of Engineering Drawing

Engineering drawing is a two dimensional representation of three dimensional objects. In general , it provides necessary information about the shapes, sizes,surface quality,material, manufacturing process, etc, of the object.It is the graphic language from which a trained person can visualize objects. Drawings prepared in one country may be utilized in any other country irrespective of the language spoken. Hence, engineering drawing is called the universal language of engineers. Any language to be communicative, should follow certain rules so that it conveys the same meaning to every one. Similarly, drawing practice must follow certain rules, if it is to serve as a means of communication. For this purpose, Bureau of Indian Standards (BIS) adapted the International Standards on code of practice for drawing. The other foreign standards are: DIN of Germany, BS of Britain and ANSI of America. Role of Engineering Drawing Drawings prepared in one country may be utilized in any other ...
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What is Mechanical Engineering ?

Mechanical engineering is a branch of engineering which deals with problems solving technique of engineering form design to manufacturing to the marketplace for any object using the application of principles. Mechanical engineers analyze the problems using the principles of motion , energy and forces - ensuring that designs functions safely, efficiently and reliably all at competitive cost. They create technology according to human needs. Being ingrained in many challenges and innovations across many fields means a mechanical engineering education versatile. Almost every product or service in modern life has probably been touched in some way by a mechanical engineer. This includes solving today's problems and creating future solution's in health care,energy,automobile,space exploration and many more the list is endless. What can Mechanical engineers do? Mechanical engineer can combine knowledge,innovation,creativity and analytical tools to complete the difficult ta...
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