Carburized steel and method of manufacturing the same
AssigneesKia Motors Corporation, Hyundai Motor Company
InventorsJae Hong Park, Minwoo Kang, Hyung-Oh Ban, Hyuk Kim
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Abstract
A carburized steel composition of the present invention comprises: silicon (Si) in an amount of about 0.7 to 1.3 wt %, nickel (Ni) in an amount of about 0.15 to 0.5 wt %, chromium (Cr) in an amount of about 2.0 to 2.8 wt %, molybdenum (Mo) in an amount of about 0.15 to 0.5 wt %, vanadium (V) in an amount of about 0.02 to 0.1 wt % and nitrogen (N) in an amount of about 0.01 to 0.02 wt %, and iron (Fe) constituting the remaining balance of the carburized steel composition, all the wt % based on the total weight of the carburized steel composition.
Claims15
A carburized steel composition, comprising:
- silicon (Si) in an amount of about 0.7 to 1.3 wt %;
- nickel (Ni) in an amount of about 0.15 to 0.5 wt %;
- chromium (Cr) in an amount of about 2.0 to 2.8 wt %;
- molybdenum (Mo) in an amount of about 0.15 to 0.5 wt %;
- vanadium (V) in an amount of about 0.02 to 0.1 wt %;
- nitrogen (N) in an amount of about 0.01 to 0.02 wt %;
- and
- iron (Fe) constituting remaining balance of the carburized steel composition,
- all the wt % based on the total weight of the carburized steel composition.
A method of manufacturing a carburized steel, comprising:
- carburizing a steel material comprising silicon (Si) in an amount of about 0.7 to 1.3 wt %, nickel (Ni) in an amount of about 0.15 to 0.5 wt %, chromium (Cr) in an amount of about 2.0 to 2.8 wt %, molybdenum (Mo) in an amount of about 0.15 to 0.5 wt %, vanadium (V) in an amount of about 0.02 to 0.1 wt % and nitrogen (N) in an amount of about 0.01 to 0.02 wt %, and iron (Fe) constituting remaining balance of the carburized steel composition, all the wt % based on the total weight of the steel material,
- wherein the carburizing is carried out at a heat treatment temperature of about 930 to 1050° C.
Dependencies are inferred from the claim text.