The Effect of S, Se and Te on Machinability and Machined Surface Layer in High Carbon Chromium Bearing Steels
1971 Volume 57 Issue 13 Pages 2141-2151
Details
1971 Volume 57 Issue 13 Pages 2141-2151
The specimens used for this test were7steels containing free cutting additives;i.e., 0.010-0.141% S, 0.09% Se and 0.06% Te.
Tests of machinability and machined surface layer on various bearing steels were done with the orthogonal cutting and surface grinding operation.
The results obtained are as follows;
Bearing steels containing 0.141% S, 0.09% Se or0.06 % Te separately are favorable for the range in which damaged structure and residual stress distribution showed a remarkable change.And then plastic deformation of steel containing 0.06 % Te is relatively small compared to the other steels.
On the other hand, machinability in the orthogonal cutting and surface grinding showed a remarkable change for cutting ratio and surface roughness in cutting, and burn mark, chatter mark, surface roughness and chip formation in grinding.
For example, each of values of cutting ratio in steels containing 0.06% Te, 0.09%Se or 0.141 % Sseparately was nearly twice as great as that of0.010% S steel.The value of 0.06% Te steel was the largest.
