Plate shape control method for thin quenching steel plate
A form control and thin gauge technology, applied in the form control of high-strength steel and quenched wear-resistant steel, can solve the problems such as the thin gauge quenched steel plate form control method patent and related literature, reports and other problems that have not yet been seen
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Embodiment 1
[0010] A certain 8mm high-strength steel, the final rolling temperature of the steel plate is 840-860°C, and air-cooled after rolling. The chemical composition is shown in Table 1:
[0011] Table 1 Chemical composition of a high-strength steel plate
[0012]
[0013] The heating temperature is controlled above the austenitization temperature, 890°C-910°C, and the heating time is controlled at 20-25min to ensure complete austenitization. When the steel plate is quenched, the water temperature is 22-28°C, the water pressure is 0.7-0.9MPa, the quenching speed is 20-25m / min, and the steel plate is cooled to room temperature.
[0014] When the steel plate is quenched, the quenching machine roll gap is set to -0.3mm to -0.5mm to ensure the safety of the equipment and the upper roll is close to the steel plate to prevent the cooling water from overflowing to the tail of the steel plate, causing the temperature drop or oxidation of the tail.
[0015] When the steel plate is quench...
Embodiment 2
[0019] Some wear-resistant steel with a size of 6mm, the final rolling temperature of the steel plate is 820-840°C, and it is air-cooled after rolling. Its chemical composition is shown in Table 2:
[0020] Table 2 Chemical composition of a wear-resistant steel plate
[0021]
[0022] The heating temperature is controlled above the austenitization temperature, 900°C-920°C, and the heating time is controlled at 15-20min to ensure complete austenitization. When the steel plate is quenched, the water temperature is 22-28°C, the water pressure is 0.7-0.9MPa, the quenching speed is 20-25m / min, and the steel plate is cooled to room temperature.
[0023] When the steel plate is quenched, the quenching machine roll gap is set to -0.3mm to -0.5mm to ensure the safety of the equipment and the upper roll is close to the steel plate to prevent the cooling water from overflowing to the tail of the steel plate, causing the temperature drop or oxidation of the tail.
[0024] When the ste...
Embodiment 3
[0028] For a certain 10mm high-strength steel, the steel plate is finished rolled at 840-860°C and air-cooled after rolling. See Table 3 for its chemical composition:
[0029] Table 3 Chemical composition of a high-strength steel plate
[0030]
[0031] The heating temperature is controlled above the austenitization temperature, 900°C-920°C, and the heating time is controlled at 25-30min to ensure complete austenitization. When the steel plate is quenched, the water temperature is 22-28°C, the water pressure is 0.7-0.9MPa, the quenching speed is 25-35m / min, and the steel plate is cooled to room temperature.
[0032] When the steel plate is quenched, the quenching machine roll gap is set to -0.3mm to -0.5mm to ensure the safety of the equipment and the upper roll is close to the steel plate to prevent the cooling water from overflowing to the tail of the steel plate, causing the temperature drop or oxidation of the tail.
[0033] When the steel plate is quenched, the spray ...
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