In this article we will discuss about the welding of metals:- 1. What is Welding? 2. Principles of Solid Phase Welding 3. Principles of Fusion (Liquid State) Welding 4. Weld Defects and Inspection. What is Welding?: Unlike the manufacturing processes employed to produce a single component, the joining processes are used to assemble different members to yield the desired complex configuration. [...]
In this article we will discuss about the metal forming processes: 1. Types of metal forming processes 2. Classification of metal forming processes 3. Techniques of metal forming processes. And also the below mentioned article provides a lecture note on metal forming processes. In doing so, we shall show how- (i) The work load can be estimated from the knowledge [...]
List of Machine Tools used for Cutting Metals! 1. Centre Lathe: The lathe is the father of all machine tools. It is a universal machine tool which can be used—with certain attachment—for many processes. For its development to the form in which we now know it, we owe much to Henry Maudlsey, who developed the sliding carriage, and in 1800 [...]
Welding is broadly classified into two types: I. Plastic Welding: In this case the two pieces of metals to be joined are heated to plastic state and welding is completed by forcing them. In this case no filler material is added. II. Fusion Welding: In this case the two pieces of metal are heated and brought to molten state and [...]
In this article we will discuss about the processes used for joining metals. Learn about:- 1. Welding 2. Brazing 3. Soldering 4. Gas Cutting Process and Equipment or (Oxyacetylene Gas Cutting Process). 1. Welding: In olden days, in order to join two pieces of metals, riveting was done. But nowadays for joining two pieces of metals welding is done. So, [...]
Compilation of metallurgy job interview question and answers for engineering students. Metallurgy Job Interview Question # Q.1. What are the Properties of Non-Crystalline Solids? Ans. i. Non-crystalline solids are isotropic, i.e., exhibit same physical and chemical properties in every direction. This is because on an average, the extent of disorder is the same in every direction. But a crystal shows [...]
The steel is manufactured by the following processes: 1. Bessemer Process 2. Cementation Process 3. Crucible Steel Process 4. Duplex Process 5. Electric Process 6. L.D. Process 7. Open-Hearth Process. Each of the above process will now be briefly described. 1. Bessemer Process: This process was invented by British engineer who patented more than 100 inventions over his lifetime. He [...]
Following are the standard shapes in which the rolled steel sections are available in the market: (1) Angle Sections: The angle sections may be of equal legs or unequal legs as shown in fig. 11-3 and fig. 11-4 respectively. The equal angle sections are available in sizes varying from 20 mm x 20 mm x 3 mm to 200 mm [...]
Following are the methods which are usually adopted to prevent the corrosion of ferrous metals: 1. Coal Tarring 2. Electroplatings 3. Embedding in Cement Concrete 4. Enamelling 5. Galvanizing 6. Metal Spraying 7. Painting 8. Parkersing 9. Sherardising 10. Tin Plating and Terne Plating. Method # 1. Coal Tarring: In this method, the iron is dipped in hot coal tar [...]
In this article we will discuss about:- 1. Evaluation of Aluminium as Building Material 2. Economics of Using Aluminium 3. Forms 4. Uses 5. Conclusion. Evaluation of Aluminium as Building Material: The building industry occupies a very important place in the national economy in terms of capital input and employment potential. The industry is dominated by materials like brick, cement, [...]