Hartnell Governor is spring loaded centrifugal governor. It contains an additional spring which is used to apply an additional force to the sleeve. This governor has a nut place at the top of the spring . This nut is used to adjust the force of the spring. Construction:- Hartnell Governor has a spindle which is…
Fins are the extended surfaces designed to increase the transfer rate for a fixed surface temperature or lower surface temperature for a fixed heat transfer rate.These are generally used to increase the heat transfer rate to the environment. It can most commonly be seen in the internal combustion engine to transfer heat to the environment…
Cupola Furnace is a melting device which used to melt cast iron, Bronze and other alloying elements are melted. It is mainly used to convert pig iron to cast iron.Cupola Furnace was first built in China in the Warring States Period ( 403 -221 BC).Cupola furnace is cylindrical in shape and the equipment of this…
A pattern is replica of casting but it has slightly large dimensions. This change in pattern in casting due to various reasons is known as pattern allowances in casting. For Example:When the cast solidify, it shrink at some extent due to metal shrinkage property at the time of cooling. So a pattern is made slightly larger…
Annealing is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable.In annealing process, a material is heated above its recrystallization temperature,maintaining a suitable temperature and then cooling. In cases of copper, steel, silver and brass, this process is…
Projection is a type of resistance welding. It is named so because different projections are formed on the workpiece for effective welding.In this welding process, the design or shape of the part is used to make discreet individual contact to concentrate the current during the welding process.In most cases, multiple small projections are formed over…