Particulate Processes
In particulate processing, the starting materials are powders of metals or ceramics. Although these two materials are quite different, the processes to shape them in particulate processing are quite similar. The common technique involves pressing and sintering, in which the powders are first squeezed into a die cavity under high pressure and then heated to bond the individual particles together.
(Fundamentals of Modern Manufacturing: Material, Processes, and Systems, Yazar:Mikell P. Groover, Page 13)
Adaptive Control Machining (17:05)
The adaptive control feedback provides sensory information on machining process variables such as spindle deflection or force, torque, cutting temperature, workpiece tool air gaps, material property variations, vibration amplitude, metal removable rate cost per volume of metal removed, and horsepower. The data is processed by an adaptive controller that converts the process information into feedback data to be incorporated into the machine control unit.
(Cad/Cam: Concepts And Applications, Yazar: Alavala, Page 403-404)
Mechanic Pulverization (17:17)
The method involves breaking down of metals into small particles through crushing and milling in ball mills. The method is used for brittle metals only such as antimony and is not suitable for ductile metals like steels and other non-ferrous metals, as they do not get properly powdered and tend to take the form of flakes due to crushing action in ball mills.
(Manufacturing Processes Second Edition, Yazar: J. P. Kaushish, Page 736)
Sintering Ability (17:30)
The characteristic of a metal powder which provides and promotes adhesion between all the particles, on sintering at controlled temperature is known as sintering ability. It should be sufficiently high for the successful production of parts. Irregular and spherical shaped particles possess good pressing and sintering properties.
(Manufacturing Process, Yazar: S. K. Sharma, Savita Sharma, Page: 235)
No comments:
Post a Comment