Advantages And Disadvantages Of Milling

MANUFACTURING CHALLENGES AND REMEDIES OF
NANO SiC PARTICULATES FROM QUARTS BY MECHANICAL ABERRATION METHOD

R. Selvam1, S. Ravi2,
1 Research scholar, Department of Mechanical Engineering, Bharath University, Chennai, India.
2 Professor, Department of Mechanical Engineering, Sriram College of Engineering, Chennai, India. Abstract

Among the various non-oxide ceramics, silicon carbide (SiC) is the leader. The attractive properties, such as good specific strength and Young’s modulus as a function of the temperature, the specific stiffness, relatively low weight, corrosion and erosion resistance and easy availability in complex engineering shapes, have made SiC an attractive alternative to the hard metal compositions. These products are applied for high

Hence the study about its characteristic is inevitable. For purposive milling and the quality assurance of products intended to be produced by milling.

During the milling process carried out in the planetary mill. The impact velocity and the angle of impact has a significant effect on the energy transferred to the powder particles to be milled by the flying ball.
Greater is the angular velocity of the sun disk, the greater is the increase in the impact velocity as the detachment velocity of the balls increases and the flying time shortens. This impact velocity is an important parameter, which determines what energy acts upon the powder particles during the mechanical milling.
Impact energy is described as the difference between the kinetic energy calculated for the moment of detachment of the ball and the velocity of the ball after the impact.

Change of the impact energy (Eb) as a function of the sun disk rotational speed (np) and the ratio (i) . ratio (i) is the ratio between the size of the vial (rv), and the position of the vial on the sun disk