mechanical30

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Flatness Testing - Mechanical engineering

Flat testing is possible by the comparing to the surface with accurate surface

Flatness inaccuracy of the surface states that departure against flatness is minimum separation of pair a parallel planes will be just contact all points on the surface.

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Tempering process - Definition, Types, Advantages,Uses

Tempering is heating treatment process applied to metallic element. It consists of heating a hardened steel to temperature under critical temperature and hold for sometime and then it cools slowly. It is final heat treatment process.

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Casting Inspection Methods

 Casting inspection is a process of evaluating the quality and integrity of cast metal components. It involves various techniques and methods to identify potential defects, ensure dimensional accuracy, and verify the structural soundness of the casting.

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Difference between Forecasting and Prediction

Forecasting is scientific, reproducible free from independent bias and error analysis is possible on it.

Prediction is subjective, mainly intuitive, non reproducible and contains independent bias. Only limited error analysis is feasible in production.

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Difference Between Centre Lathe and (Capstan or Turret) Lathe

The capstan and turret lathe serve similar functions in machining processes. They both allow for efficient and precise turning of workpieces by holding and rotating them while cutting tools shape the material. 

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Injection Molding Process, Definition ,Types and Products

Injection moulding is most generally used method of producing parts of thermoplastic and more recently, thermosetting resins as well. 

The molten material cools and solidifies to form the desired shape. This process is widely used for producing plastic parts in various industries due to its efficiency, repeatability, and ability to produce complex shapes with high precision.

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Difference between Hot working and cold working processes

Hot working

Hot working is defined as the process of deformation of metal under such conditions of temperature and strain rate that recovery occur during after deformation. In hot working no work hardening occur in metal.

Cold working

Cold working is the process plastic deformation metals and alloys below the condensate temperature and strain rates are such that strain hardening is not relieved. In cold working carried out under condensate temperature of alloys. 

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What is Hot working? Advantages, Disadvantages its characteristics and limitations

Hot working is defined as the process of deformation of metal under such conditions of temperature and strain rate that recovery occur during after deformation.tress occurs constant flow in hot working. In hot working no work hardening occurs in the metal. Forces applied the microstructure extend in the direction of applied load and because of high temperature, nuclei of new grains are created. Grains size depends on amount of reduction, reduction amount large  finer will be the grains. Hot working process is combination of cold working and annealing. Work hardening effect caused by plastic deformation.

[mechanical30]

Injection Molding Process, Definition ,Types and Products

Injection moulding is most generally used method of producing parts of thermoplastic and more recently, thermosetting resins as well. 

The molten material cools and solidifies to form the desired shape. This process is widely used for producing plastic parts in various industries due to its efficiency, repeatability, and ability to produce complex shapes with high precision.

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What is Cold working? Characteristics Limitations

Cold working is the process plastic deformation metals and alloys below the condensate temperature and strain rates are such that strain hardening is not relieved. 

Condensate temperature is equal to 0.5 Tm. Tm is absolute melting temperature of metal. Cold working results in hardness and toughness and decrease in elasticity of metal. cold working grains are extend microstructure rests as it is.

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Straddle milling - Mechanical Engineering

Straddle milling two side milling cutter disparate by spacers, washers, and shims so that the distance between the cutting teeth of each cutter is exactly equal to width of  workpiece area needed

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Saddle keys - Mechanical Engineering

A saddle key is a key that fits into a keyway of hub only. In this case there is no keyway on shaft. 

There is two types of keys hollow and flat. A hollow saddle key has concave surface to at bottom to match the surface of the shaft. Bottom surface of the saddle key is flat. In both type of saddle key, friction between shaft, hub and key prevent respective motion between hub and shaft. By friction power is transmitted

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Skeleton Pattern It's Appliations

A skeleton pattern, also known as a framework or template, is a basic structure or outline used to guide the development of something more complex.

 In software development, a skeleton pattern might refer to a basic code structure that developers can use as a foundation for building more advanced programs. 

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Sweep Pattern - Mechanical engineering

sweep patterns is used for rotational uniform casting. Sweep pattern consist of a board having profile of desired mold, which revolve throughout spindle produces mold.

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Comparison between Capstan Lathe and Turret Lathe

Capstan lathe

Capstan lathe is a type of machine tool used for machining relatively small workpieces. It is designed for high-speed production of turned components, typically in large quantities. The distinguishing feature of a capstan lathe is its turret, which holds multiple cutting tools that can be quickly indexed into position for machining operations.

Turret lathe

Turret lathe is a type of metalworking lathe that features a turret or a toolpost mounted on a slide, which can hold multiple cutting tools. This turret can be rotated to bring each tool into position for machining operations

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Comparison between Smoke Tube Boiler and Water Tube Boiler

A smoke tube boiler is a type of boiler that utilizes the products of combustion (smoke) to heat water. It consists of a shell containing a series of tubes through which the smoke passes.

Water tube Boilers:-

 In these, contrary to the smoke tube boilers, the water flows in tubes and hot vapour are passes above the tubes. These types of and hot boilers used  for large amount of vapour generation at high pressure.

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Differentiate between Hot rolling and Cold rolling

Hot Rolling

Hot rolling carried out to roll ingots into slabs,billets. On further hot rolling plates.l, bar rounds, structural shapes and rails are obtained. Because of limitations in equipment and workability if metal rolling is done is progressive steps.

Cold rolling:-

Cold rolling is a process used in manufacturing to shape metal sheets and strips. It involves passing the metal through a pair of rollers at room temperature, which compresses and elongates the material, reducing its thickness and altering its surface finish.

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