Carbon steel sheet having excellent carburization properties, and method for producing same

Carbon steel sheet having excellent carburization properties, and method for producing same

  • CN 102,149,839 A
  • Filed: 03/03/2010
  • Published: 08/10/2011
  • Est. Priority Date: 03/27/2009
  • Status: Active Application
First Claim
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1. superloy plate, its be carbon potential be in the carburizing atmosphere below 0.6 by the carbon steel sheet of carburizing, it is characterized in that,Described carbon steel sheet contains following compositions:

  • C;

    0.20 quality %~

    0.45 quality %,Si;

    0.05 quality %~

    0.8 quality %,Mn;

    0.85 quality %~

    2.0 quality %,P;

    0.001 quality %~

    0.04 quality %,S;

    0.0001 quality %~

    0.006 quality %,Al;

    0.01 quality %~

    0.1 quality %,Ti;

    0.005 quality %~

    0.3 quality %,B;

    0.0005 quality %~

    0.01 quality %, andN;

    0.001 quality %~

    0.01 quality %,Remainder contains Fe and unavoidable impurities;

    The K value of obtaining by 3C+Mn+0.5Si is more than 2.0;

    Surface hardness is counted below 77 with the rockwell b scale degree;

    The average content that is the N in the zone of 100 μ

    m from the top layer to the degree of depth is below the 100ppm.

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