High frequency heat treatment material and method of manufacturing gear using the same
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United States of America Patent
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Jul 2, 2015
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Dec 30, 2014
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Dec 30, 2013
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The present invention relates to a high frequency heat treatment material and a method for manufacturing a gear using the same. According to the present invention, the high frequency heat treatment material is made of 0.50 to 0.55 wt % of carbon (C), 0.30 to 0.50 wt % of silicon (Si), 0.35 to 0.55 wt % of manganese (Mn), 0.30 wt % or less of copper (Cu), 0.25 wt % or less of nickel (Ni), 0.25 wt % or less of chromium (Cr), 0.35 to 0.45 wt % of molybdenum (Mo), 0.002 to 0.004 wt % of boron (B), 0.025 to 0.045 wt % of aluminum (Al), and the balance of Fe, and has stable deformation and physical properties equivalent to carburization heat treatment. Therefore, according to the present invention, it is possible to obtain a gear having high surface strength and hardness by machining a medium carbon steel.
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