Showing posts with label Mechanical industry. Show all posts
Showing posts with label Mechanical industry. Show all posts

Wednesday, 30 March 2016

Types OF Sunk Key Use In Mechanical Engineering

As i mention in my previous written article there are six different  types of sunk key which are used for different kind of work according to his shape,length position of mounting and so many other.
There are six different kind of Sunk keys:

  • Rectangular Sunk Key
  • Square Sunk key
  • Parallel Sunk Key
  • Gib Head Sunk Key
  • Feather Key
  • Wood ruff Key

 Rectangular Key:



Rectangular sunk key called rectangular because the cross section of the key in rectangular shape.there is a taper in key from upper side and the ratio is 1:100.

Formula:                           t=d/6

Square Key:


The cross section of the square  key is in square shape that's why its called square key and there is only difference of cross section between square and rectangular key.

Formula:                               t=d/4

Parallel Key:


There is no taper in this key and also the upper and lower surfaces are parallel in to each other that's why its called Parallel key. Cross section of the parallel in rectangular and also in square shape both.

Gib Head Key:


This key has all the dimension according to rectangular key just difference is that Gib head key has a Gib Head at one side of the key.

Formula:                        t=d/6

Feather Key :


This key is fixing with one specific part and its will help us to done the relative motion between them. This is a special kind of key and used in specific work.

Wood Ruff Key:


Wood ruff key is those kind of key that is mount easily. Wood ruff key is a part of round disk which is looking like a segment as we see from front. For mounting wood ruff key a key is make in part and mount key in it.

Monday, 21 March 2016

Steam and Gas Turbine In Mechanical Industry

Steam and Gas Turbine:


Steam Turbine is a prime mover in which the moment of the steam changes and get rotatory motion from it. In reciprocating steam engine, steam act on the face of steam piston. In the result of this piston start the reciprocating motion.
There are so many types of turbine that are used in Mechanical industry in different way and also for different work.

Classification of Steam Turbine:

  • According to made of Steam action
  • According to direction of Steam flow
  • According to exhaust condition
  • According to the pressure
  • According to the number of stages
There are the two most used turbines which are mostly used in industry and also used for other work.
  1. Impulse Turbine
  2. Reaction Turbine

Working principle of Impulse Turbine:


In this turbine, Turbine blades moves with the help of steam impulse that's why it's called impulse turbine.

Working principle of Reaction Turbine:


In this turbine, Steam fell on turbine blades at high pressure and in reaction blade start the movement due to specific shape of turbine blades.