Alloy constructional steel for large-scale wind power principal axis
A technology of alloy structural steel and wind power main shaft, which is applied in the field of wind power and can solve the problems that cannot be fully achieved
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[0017] The invention relates to an alloy structural steel for a large-scale wind power main shaft, which is mainly composed of the following chemical components in weight percentage: C 0.38-0.45%, Si 0.17-0.37%, Mn 0.50-0.80%, Cr 0.90-1.20%, Ni 0.30 %, Mo 0.15-0.25%, P≤0.035%, S≤0.035%, and the balance is Fe and unavoidable impurities. For specific performance analysis, please refer to the attached table below.
[0018] Table 1: Comparison table of chemical composition
[0019] steel number
C
Si
mn
Cr
Ni
Mo
p
s
34CrNiMo6
0.32~
0.40
0.17~
0.37
0.40~
0.70
0.80~
1.10
1.55
0.15~
0.25
≤
0.025
≤
0.015
40CrNiMoA
0.37~
0.44
0.17~
0.37
0.50~
0.80
0.60~
0.90
1.25~
1.65
0.15~
0.25
≤
0.025
≤
...
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