Sprocket wheel and method of making same
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United States of America Patent
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-
Jul 9, 1985
Grant Date -
N/A
app pub date -
Nov 30, 1983
filing date -
Dec 1, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sprocket wheel for mining applications comprises a forged, austenitized and oil-quenched body which consists essentially of: 0.7 to 1.0% by weight manganese, 0.7 to 2.2% by weight chromium, 0.3 to 0.6% by weight molybdenum, 0.5 to 2.2% by weight nickel, up to 0.45% by weight carbon, and balance iron and usual steel impurities and which is surface-hardened to a depth of about 2 mm, has a hardness of substantially 55 to 60 HRC and a strength of 1400 to 1600 N/mm.sup.2.
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