Abstract
The machinability of S, S-Ca, S-RE, and S-RE-Ca system resulfurized composite free-cutting steels were investigated, where RE is rare earths, mostly cerium. The experimental results showed that in the low cutting speed range (≤35 m/min), the S-RE system free-cutting steel had better machinability than the others and that the S-RE-Ca system free-cutting steel exhibited the best machinability at high cutting speeds. A protective layer capable of preventing diffusion wear was formed on the rake face of a P30 tool when S-RE-Ca system free-cutting steel was machined in the cutting speed range of 120 to 160 m/min.
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Lou, D., Cui, K. & Jia, Y. Study on the machinability of resulfurized composite free-cutting steels. J. of Materi Eng and Perform 6, 215–218 (1997). https://doi.org/10.1007/s11665-997-0017-0
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DOI: https://doi.org/10.1007/s11665-997-0017-0