高炭素クロム軸受鋼の被削性および加工表面層におよぼすS, SeおよびTeの影響
1971 年 57 巻 13 号 p. 2141-2151
詳細
1971 年 57 巻 13 号 p. 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.
