Carburizing alloy steel having improved durability and method of manufacturing the same

Abstract

The invention provides carburizing alloy steel having improved durability and a method of manufacturing the same. A carburizing alloy steel includes 0.1 to 0.35 wt % of carbon (C), 0.1 to 2 wt % of silicon (Si), 0.1 to 1.5 wt % of manganese (Mn), 0.5 to 1.5 wt % of chromium (Cr), 0.2 to 0.5 wt % of molybdenum (Mo), 0.1 to 0.6 wt % of nickel (Ni), more than 0 wt % and less than or equal to 0.07 wt % of niobium (Nb), more than 0 wt % and less than or equal to 0.5 wt % of vanadium (V), more than 0 wt % and less than or equal to 0.5 wt % of titanium (Ti), more than 0 wt % and less than or equal to 0.015 wt % of nitrogen (N), 0.00002 to 0.00005 wt % of boron (B), based on the total weight of the alloy steel, iron (Fe) as a main component.

Description

[0001] References to related applications [0002] This application claims the benefit of priority to Korean Patent Application No. 10-2015-55104 filed at the Korean Intellectual Property Office on April 20, 2015 under 35 U.S.C. §119, the entire contents of which are incorporated herein by reference . technical field [0003] The present disclosure relates to a carburized alloy steel having improved durability and a method for producing the same, and more particularly, to carburizing the surface of an alloy steel having suitable constituents and contents to effectively carburize the surface of the alloy steel, thereby improving hardness, strength, Carburized alloy steel having toughness, fatigue strength, fatigue life, etc., and its manufacturing method. Background technique [0004] Recently, environmental problems have increased around the world, and therefore, methods of reducing fuel to cope with such problems including all industries have been sought. To reduce fuel, ...

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Problems solved by technology

However, when carburized steel is used, tooth breakage and pitting are prone to occur

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