Cutting speed and feed rate in straight turning in lathe

Machining or metal cutting is one type of secondary manufacturing process by which excess material is gradually removed by shearing from pre-formed blank in the form of chips using a wedge shaped cutting tool to obtain desired shape, size and finish. It is one subtractive manufacturing process, which indicates layer by layer material is removed to get desired form. There exist a large number of such processes—each having different capability

Rotating and reciprocating type machining operations

Metal cutting or machining is one of the secondary manufacturing processes by which excess material is gradually removed by shearing from a pre-formed blank in the form of chips using a wedge shaped cutting tool in order to obtain intended form having better finish, high dimensional accuracy and close tolerance. It is one type of subtractive manufacturing process where layer by layer material is removed from a solid blank to

Difference Between Surface Roughness and Surface Finish

Primary aim of secondary manufacturing processes is to obtain products having better surface quality, high dimensional accuracy and close tolerance. Such processes include machining or metal cutting operations (like turning, milling, drilling, reaming, precision turning, grinding, lapping, honing, AJM, USM, EDM, LBM, IBM, etc.) and surface modification operations (like heat treatment, coloring, coating, etc.). Each of these processes has varying level of capabilities in terms of surface quality and precision.

Surface profile of a highly finished surface

Functional performance of any solid surface relies on the physical conditions and chemical composition of the concerned surface and subsurface layers. Quality is defined as fit for intended purpose. Similarly, quality of a solid surface is one subjective matter and its assessment primarily depends on intended functionalities. Let us explain the same with examples. With respect to decorative artefact, appearance of the surface has importance rather than presence of micro-cracks

Difference between SMAW, GMAW and GTAW welding

Welding is one fast and reliable joining technique that has almost replaced other permanent joining processes. It can be defined as one joining process by which two or more materials can be assembled permanently with or without the applications of heat, pressure and filler. It can be overwhelmingly used for joining not only metals but also other types of materials including plastics and ceramics. To cater the need of joining

Differences between orthogonal rake and normal rake

Turning is one machining or metal cutting process (subtractive manufacturing) used to reduce diameter of a cylindrical workpiece by gradually removing excess material. It is performed on a versatile machine tool, called lathe, using a single point cutting tool. As the name suggests, a single point cutter contains only one main cutting edge that participates in material removal action during machining. Turning tool, formally known as single point turning tool

Shielded metal arc welding (SMAW) process

Welding is one of the joining processes by which two or more solid components can be joined permanently by coalescence formation with or without the application of heat, pressure and filler metal. There exist a large number of welding processes for efficient and productive joining of wide variety of materials in several ways. Based on the application of heat from external source during welding, such processes can be classified as

Difference Between Cold Extraction and Hot Extraction of Vegetable Oil

Edible oils are nutrition rich organic vegetable oils that are hygienic and contain no toxic substance. Such oils are healthy for human consumption either directly or as food ingredient. Primary sources of edible oils are oilseeds, nuts and fruits of various plants such as groundnut, soybean, sunflower, rapeseed, linseed, safflower, peanut, palm, coconut, olive, etc. There are certain other oilseeds which usually do not provide edible oil; but non-edible oils

Difference Between Vegetable Oil and Mineral Oil

Scientifically oil is one flammable, viscous, volatile or non-volatile, organic or inorganic, edible and non-edible, reusable or non-reusable, and biodegradable or non-biodegradable substance that is insoluble in water and remains liquid at room temperature. Oil can be extracted from a wide variety of sources including plant derivative, microalgae, animal fat, and petroleum (crude oil). Some of these are safe, nutritious and hygienic for human consumption and thus are commonly used

Difference Between Edible Oil and Non-Edible Oil

All over the world, people have started diversifying oilseed cultivation to better match modern day’s health, nutritional and taste requirements. Although oil is popularly derived from oilseeds like groundnut, soybean, sunflower, rapeseed mustered, castor, cotton seed, etc., various tree fruits (like coconut, palm, olive, etc.) are also reliable sources for oils; in fact, fruit sources provide higher yielding. Oil, derived from such vegetable sources, is called vegetable oil. However, every