Quenching method of thin steel plate
A thin-gauge, steel plate technology, applied in the field of heat treatment, can solve problems such as warping and deformation of thin-gauge steel plates, and achieve the effect of enhancing security capabilities, expanding the range of specifications and sizes, and promoting development and production.
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Embodiment 1
[0033] This embodiment is a further improvement of the overall quenching method:
[0034] The equipment used in the heating stage is a quenching and normalizing furnace. The quenching and normalizing furnace is a continuous roller hearth type with nitrogen in the furnace. It uses radiant tubes for heating. The radiant tubes are arranged symmetrically in two rows along the hearth of the quenching and normalizing furnace. Automatic combustion is controlled; before the steel plate enters the furnace, the surface of the steel plate is shot blasted to remove the iron scale, so as to prevent the hearth roller from being brought into the furnace to cause nodules, and at the same time ensure that the fluctuation of the furnace temperature is less than 5°C.
[0035] The medium used in the water spray cooling stage is circulating cooling water, the water temperature of the circulating cooling water is less than 35°C, and a filtering device is installed during the circulating cooling wate...
Embodiment 2
[0039] This embodiment is a further detailed operation process on the basis of Embodiment 1:
[0040] A thin-gauge steel plate with a thickness of 12 mm is selected. The equipment used in the heating stage is a quenching and normalizing furnace. The quenching and normalizing furnace is a continuous roller hearth type with nitrogen in the furnace. It uses radiant tubes for heating. The radiant tubes are arranged symmetrically in two rows along the hearth of the quenching and normalizing furnace. Automatic combustion is controlled; before the steel plate enters the furnace, the surface of the steel plate must be shot blasted to remove the iron scale, so as to prevent the hearth roller from being brought into the furnace to cause nodules; at the same time, the fluctuation of the furnace temperature is guaranteed to be less than 5°C.
[0041] The equipment used in the water spray cooling stage is a quenching machine. The working mode of the quenching machine is rolling continuous ...
Embodiment 3
[0045]This embodiment is a further detailed operation process on the basis of Embodiment 1:
[0046] A thin-gauge steel plate with a thickness of 9 mm is selected. The equipment used in the heating stage is a quenching and normalizing furnace. The quenching and normalizing furnace is a continuous roller hearth type with nitrogen in the furnace. It uses radiant tubes for heating. The radiant tubes are arranged symmetrically in two rows along the hearth of the quenching and normalizing furnace. Automatic combustion is controlled; before the steel plate enters the furnace, the surface of the steel plate must be shot blasted to remove the iron scale, so as to prevent the hearth roller from being brought into the furnace to cause nodules; at the same time, the fluctuation of the furnace temperature is guaranteed to be less than 5°C.
[0047] The equipment used in the water spray cooling stage is a quenching machine. The working mode of the quenching machine is continuous quenching ...
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