A kind of preparation method of high-performance flange shaft
A flanged shaft, high-performance technology, applied in the field of high-performance flanged shaft preparation, can solve the problems of unsatisfactory flanged shaft performance, flanged shaft out-of-round deformation, low qualification rate, etc., and achieves simple heat treatment steps and reduced size The effect of temperature difference and short production cycle
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Embodiment 1
[0038] The flange shaft composition of this embodiment is preferably: C 2.5%; Si 1.6%; Mn 0.5%; P 0.05%; S 0.03%; Cr 3.8%; Ni 0.11%; B 1.0%; N 0.4%; Mg 0.09 %; Al 0.14%; Zr 0.08%; Mo 0.19%; Cu 0.12%; V 0.5%; Ti 0.14%; the balance is Fe and unavoidable impurities.
[0039] The preparation steps of the flange shaft of the present embodiment are:
[0040] Step 1: Melting is carried out according to the distribution ratio of chemical elements, and the flange shaft casting slab is cast.
[0041] Step 2. Anneal the flange shaft. The specific annealing process is as follows: heat the flange shaft to 900°C for 3 hours, cool in the furnace to 735°C, hold for 5 hours, then cool to 500°C and air-cool the flange. The shaft is roughed. In this embodiment, the flange shaft is firstly annealed, and the heating temperature is controlled between 890°C and 910°C, the purpose of which is to improve the machining performance of the flange shaft and increase the efficiency of rough machining the...
Embodiment 2
[0053] A high-performance flange shaft in this embodiment is basically the same as in Embodiment 1, except that the mass percentage of chemical elements in the flange shaft in this embodiment is as follows: C 2.2%; Si 0.7%; Mn 0.7%; P 0.04%; S 0.03%; Cr 4.2%; Ni 0.08%; B 1.3%; N 0.24%; Mg 0.11%; Al 0.06%; Zr 0.1%; Mo 0.15%; Cu 0.10%; %; Ti 0.2%; the balance is Fe and unavoidable impurities. The specific annealing process of Step 2 in the preparation process is as follows: heat the flange shaft to 890°C for 2 hours, cool it in the furnace to 720°C, hold it for 4 hours, then cool it to below 500°C and take it out of the furnace for air cooling, and then rough machine the flange shaft ; The first section of step three is heated to 700°C with the furnace, and the second section is heated to 1020°C; the thickness of the nano-ceramic coating in step five is 1.5mm.
Embodiment 3
[0055] A high-performance flange shaft in this embodiment is basically the same as in Embodiment 1, except that the mass percentage of chemical elements in the flange shaft in this embodiment is as follows: C 2.8%; Si 2.3%; Mn 0.3%; P 0.05%; S 0.03%; Cr 3.4%; Ni 0.14%; B 0.7%; N 0.4%; Mg 0.07%; Al 0.2%; Zr 0.05%; Mo 0.14%; Cu 0.20%; %; Ti 0.08%; the balance is Fe and unavoidable impurities. The specific annealing process of the second step in the preparation process is: heating the flange shaft to 910°C for 4 hours, furnace cooling to 760°C, holding for 6 hours, then furnace cooling to below 500°C and air cooling, and then rough machining the flange shaft ; The first section of step three is heated to 650°C with the furnace, and the second section is heated to 960°C; the thickness of the nano-ceramic coating in step five is 2mm.
[0056] The preparation method of a high-performance flange shaft described in Examples 1 to 3 achieves the purpose of refining the internal grains ...
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