Forging steel

Forging steel

  • CN 101,542,005 A
  • Filed: 04/10/2008
  • Published: 09/23/2009
  • Est. Priority Date: 04/11/2007
  • Status: Active Application
First Claim
Patent Images

1. the forging steel of a forging property excellence is characterized in that, in quality %, containsC:

  • 0.001% above and less than 0.07%,Below the Si;

    3.0%,Mn:

    0.01~

    4.0%



    Below the Cr;

    5.0%,Below the P;

    0.2%,Below the S;

    0.35%,Al:

    0.0001%



    2.0%



    Below the N;

    0.03%,Also containMo;

    1.5% following (comprising 0%),Ni;

    4.5% following (comprising 0%)Among one or both, its surplus is made of iron and unavoidable impurities, the Di value of being tried to achieve by following (1) formula is more than 60,Di=

    5.41×

    Di(Si)×

    Di(Mn)×

    Di(Cr)×

    Di(Mo)×

    Di(Ni)×

    Di(Al)…

    (1),

    Wherein,Di(Si)=

    0.7×

    [%

    Si]+1;

    Mn≤

    1.2% o'"'"'clock, Di (Mn)=3.335 * [%Mn]+1,During 1.2%<

    Mn, Di (Mn)=5.1 * [%Mn]-1.12;

    Ni≤

    1.5% o'"'"'clock, Di (Ni)=0.3633 * [%Ni]+1,1.5%<

    Ni≤

    1.7 o'"'"'clock, Di (Ni)=0.442 * [%Ni]+0.8884,1.7%<

    Ni≤

    1.8 o'"'"'clock, Di (Ni)=0.4 * [%Ni]+0.96,1.8%<

    Ni≤

    1.9 o'"'"'clock, Di (Ni)=0.7 * [%Ni]+0.42,During 1.9%<

    Ni, Di (Ni)=0.2867 * [%Ni]+1.2055;

    Di(Cr)=

    2.16×

    [%

    Cr]+1;

    Di(Mo)=



    [%

    Mo]+1;

    Al≤

    0.05% o'"'"'clock, Di (Al)=1,During 0.05%<

    Al, Di (Al)=4 * [%Al]+1,[] means the content (quality %) of this element in the formula.

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