Chemical Coolants
Posted by mechlook info on May 16th, 2012 09:36 PM | No Comment
Chemical coolants are mixture of a number of chemical components dissolved in water. All of them are used as coolants, but some of them very well exhibit lubricating properties also. Basically they are water modifiers and are recommended particularly for ...
Solid Lubricants
Posted by mechlook info on May 16th, 2012 09:36 PM | No Comment
Solid lubricants are employed in a finely divided state and are kept in suspension in the liquid vehicle by means of a dispersing agent. Stick waxes and bar soaps are sometimes used as a convenient means of applying lubricants to ...
Liquid Cutting Fluids
Posted by mechlook info on May 16th, 2012 09:35 PM | No Comment
These are classified into two classes :
(a) Water Solutions. Water is an excellent cooling medium having the maximum specific beat, but has little lubricating properties and causes rust and corrosion. Another disadvantage of using Water is that it processes high ...
Cutting Fluids
Posted by mechlook info on May 16th, 2012 09:35 PM | No Comment
In a modern workshop practice or any industry using power, an enormous amount of power is lost either by the generation of heat or by friction between tool surface and workpiece. It has been seen that the amount of power ...
Strain Rings
Posted by mechlook info on May 16th, 2012 09:35 PM | No Comment
It has been seen that lathe dynamometers are moment (Force X Distance measuring devices and as such in these cases force must always be applied at the same point. However in some cutting processes, it is necessary to measure the ...
Electric Transducers
Posted by mechlook info on May 16th, 2012 09:35 PM | No Comment
Due to so many inherent advantages in electric devices, electric transducers are often used in dynamometers to measure displacement which is proportional to the cutting force. The various electric displacement measuring devices commonly used are (i) Electronic transducer tube (triode ...
Hydraulic Pressure Cells
Posted by mechlook info on May 16th, 2012 09:35 PM | No Comment
In hydraulic pressure cells, the force experienced by the too1 is applied through a diaphragm to an enclosed volume of the oil, which gets pressurised on application of force. The pressure can be measured easily by the conventional pressure gauge ...