Material of high speed train brake disc for low temperature environment
A technology for high-speed trains and low-temperature environments. It is applied in the field of brake disc materials. It can solve the problems of reduced impact absorption energy of alloy steel, failure to meet the performance requirements of low-temperature environments, and affect the safety of brake discs, so as to improve the impact absorption energy. Effect
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[0026] The present invention will be further described below in conjunction with specific examples.
[0027] According to the composition range of the material of the high-speed train brake disc used in the low temperature environment of the present invention, we have determined the content of each metal element to melt the alloy steel required for the production of the brake disc according to the preparation method of the alloy steel material, and the composition of the alloy As shown in Table 1.
[0028] C%
Si%
Mn%
P%
S%
Cr%
Mo%
Ni%
0.21
0.53
0.75
0.003
0.006
0.74
0.63
1.81
Al%
Cu%
Sb%
Fe%
0.02
0.06
0.05
margin
[0029] Brake disc blank castings will be obtained for treatment process:
[0030] 1. Preheating: put the casting vertically into the auxiliary furnace (CN778-31), raise the temperature to 400°C with full power, and keep it warm for 10 m...
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