Heat treatment process for 200MW or lower large size rotor
A rotor and process technology, applied in the field of large-scale rotor heat treatment technology, can solve the problems of large 200MW large-scale rotors, large differences in step hardness, low performance of large-scale rotors, etc., to avoid cracking risks, heavy weight, and high strength.
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[0026] Such as figure 1 , 2 Shown: The large rotor heat treatment process of 200MW and below adopts the cooling method of water quenching and oil cooling to control the quenching temperature and tempering temperature; strictly control the temperature of outlet water and oil, the time of water quenching, and the time of oil cooling; the time of water quenching and oil cooling is directly related to The hardenability of this material is good, and the most ideal structure required by the material is tempered upper bainite. It is advisable to increase the water temperature appropriately, reduce the cooling rate in the water, reduce the thermal stress, and minimize the stress during quenching. deformation and cracking tendency,
[0027] The implementation of the heat treatment process plan for the production of large rotors of 200MW and below, because the weight of the parts reached 41t, which exceeded the load-bearing requirements of the originally designed tooling,
[0028] Fir...
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