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 [...]
Transportation planning is a complex problem. Increased facilities will change the environment and land use patterns and result in increased trips invalidating the original criteria and projections used. Increased use of operations research and systems approach to transportation planning in recent times seeks to optimise the system performance for deriving maximum benefit from the facilities. The use of mathematical models [...]
In this article we will discuss about the sheet metal manufacturing process and its operation types. Introduction to Sheet Metal Work: Most of the sheet metal work is done on presses where a die and punch or other formed tools are required. In press work large force is applied on thin sheet metals to give the required shape or to [...]
Substitutes or Alternatives of Bricks used for Construction in India! According to one study, our country needs about 60 billion bricks every year and if no suitable substitute is found out, this would exhaust about 1600 x 106 kN of clay fields or other agricultural land annually. It will thus make barren about 3000 hectares of fertile land. The extent [...]
Learn about the comparison or differences between clamp-burning and kiln burning of bricks. Comparison # Clamp-Burning: 1. Capacity: About 20000 to 100000 bricks can be prepared at a time. 2. Cost of Fuel: Low as grass, cow dung, litter, etc. may be used. 3. Initial Cost: Very low as no structures are to be built. 4. Quality of Bricks: The [...]
The upcoming discussion will update you about the difference between fat lime and hydraulic lime. There are mainly two varieties of limes, namely, fat lime and hydraulic lime. Difference # Fat Lime: 1. Composition: It is obtained from comparatively pure carbonate of lime containing only 5 per cent of clayey impurities. 2. Slaking Action: It slakes vigorously. Its volume is [...]
In this article we will discuss about: 1. General Properties of Engineering Materials 2. Physical Properties of Engineering Materials 3. Mechanical Properties. General Properties of Engineering Materials: The economists mainly concerned with the industries manufacturing engineering materials are interested in finding out ways in which the engineering materials can be used or applied in the best economic way. The economist should [...]
Following are the qualities or characteristics or requirements properties of a good building stone: 1. Crushing Strength: For a good structural stone, the crushing strength should be greater than 100 N/mm3. The approximate values of crushing strength of some of the stones are shown in table 2-1. 2. Appearance: The stones which are to be used for face work should [...]