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 [...]
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, [...]
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 [...]
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 [...]
In this article we will discuss about:- 1. Manufacture of Cast-Iron 2. Composition of Cast-Iron 3. Types 4. Properties 5. Uses 6. Castings 7. Types of Castings 8. Characteristics of a Good Casting 9. Defects in Casting. Manufacture of Cast-Iron: The cast-iron is manufactured by re-melting pig-iron with coke and limestone. This re-melting is done in a furnace known as [...]
In this article we will discuss about:- 1. Composition of Steel 2. Uses of Steel 3. Factors Affecting the Physical Properties 4. Magnetic Properties 5. Defects 6. Properties of Mild Steel 7. Properties of Hard Steel 8. Mechanical Treatment. Composition of Steel: As far as the carbon content is concerned, the steel forms an intermediate stage between cast-iron and wrought-iron. [...]
It is possible to alter the properties of steel by heating and cooling steel under controlled conditions. The term heat treatment is used to indicate the process in which the heating and cooling of solid steel is involved to change the structural or physical properties of steel. Thus, in heat treatment process, the heating and cooling of steel are carried [...]
Here is a list of non-ferrous metals used in engineering structures. 1. Aluminium: The aluminium occurs in abundance on the surface of earth. It is available in various forms such as oxides, sulphates, silicates, phosphates, etc. But it is commercially produced mainly from bauxite (AI2O3, 2H2O) which is hydrated oxide of aluminium. Manufacture of Aluminium: The aluminium is extracted from [...]