Technique for adding lead to steel
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United States of America Patent
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-
Feb 1, 1983
Grant Date -
N/A
app pub date -
Jul 6, 1981
filing date -
Jul 6, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A resulfurized ferrous alloy including lead characterized in that the lead is well dispersed in the steel matrix and the free lead globules are controlled as to size, is produced by introducing the lead into a steel melt in the form of a fine lead sulfide (PbS), or galena powder. The alloy produced exhibits improved machinability, which characteristic is further enhanced by the formation of manganese sulfide particles which are well distributed and have minimum aspect ratio (i.e., are round) when the melt has been deoxidized with manganese.
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