Thermal treatment method for improving mechanical performances of normalized steel plate
A heat treatment method and normalizing treatment technology, which is applied in the field of medium and heavy plate steel plate manufacturing, can solve the problems of poor welding adaptability, decreased mechanical performance strength, slow cooling speed, etc., to achieve increased strength, increased tensile strength, and uniformity Improved effect
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Embodiment 1
[0016] The heat treatment temperature of the rolled steel plate is 870°C, the heat preservation time is 40 minutes, the water ratio is 1, the roll speed is set at 40m / min, and the measured surface temperature of the steel plate after treatment is 600°C. The comprehensive mechanical properties of the steel plate are shown in Table 1.
Embodiment 2
[0018] The heat treatment temperature of the rolled steel plate is 880°C, the heat preservation time is 30 minutes, the water ratio is 1.01, the roll speed is set at 35m / min, and the measured surface temperature of the steel plate after treatment is 610°C. The comprehensive mechanical properties of the steel plate are shown in Table 1.
Embodiment 3
[0020] The heat treatment temperature of the rolled steel plate is 920°C, the temperature is kept for 5 minutes, the water ratio is 1.71, the roll speed is set at 12m / min, and the measured surface temperature of the steel plate after treatment is 780°C. The comprehensive mechanical properties of the steel plate are shown in Table 1.
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