Steel plate for high-strength offshore wind power installation platform and production method thereof
An offshore wind power and platform installation technology, applied in the field of steel production, can solve the problem of high steel requirements, and achieve the effects of high tooth surface hardness, fine and uniform steel plate structure, and good low temperature toughness
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Embodiment 1
[0028] The production method of the steel plate for the high-strength offshore wind power installation platform in this embodiment includes the steps of heating, rolling, annealing, and heat treatment. The specific steps of each process are as follows:
[0029] 1) Heating process: billet charging temperature is 352°C, stew steel for 3 hours, then raise the temperature to 1200°C at 80°C / h, the maximum heating temperature is 1240°C, soaking temperature is 1200-1220°C, and the soaking section holding time is 26 hours;
[0030] 2) Rolling process: II-stage rolling process is adopted, in which the second-stage rolling temperature is 860°C, the final rolling temperature is 800°C, the watering temperature of the rolled steel plate is 700°C, and the steel plate is annealed immediately after rolling;
[0031] 3) Annealing process: the temperature of the steel plate entering the furnace is 310°C, the annealing temperature is 850°C, and the holding time is 1.58min / mm. After the holding t...
Embodiment 2
[0035] The production method of the steel plate for the high-strength offshore wind power installation platform in this embodiment includes the steps of heating, rolling, annealing, and heat treatment. The specific steps of each process are as follows:
[0036] 1) Heating process: billet furnace temperature is 372°C, steel is stewed for 3 hours, then the temperature is raised to 1200°C at a rate of 90°C / h, the maximum heating temperature is 1240°C, the soaking temperature is 1200-1220°C, and the soaking section holding time is 24 hours;
[0037] 2) Rolling process: II-stage rolling process is adopted, in which the second-stage rolling temperature is 852°C, the final rolling temperature is 800°C, the watering temperature of the rolled steel plate is 680°C, and the steel plate is annealed immediately after rolling;
[0038] 3) Annealing process: the temperature of the steel plate entering the furnace is 340°C, the annealing temperature is 850°C, and the holding time is 1.7min / mm...
Embodiment 3
[0042] The production method of the steel plate for the high-strength offshore wind power installation platform in this embodiment includes the steps of heating, rolling, annealing, and heat treatment. The specific steps of each process are as follows:
[0043] 1) Heating process: billet furnace temperature is 392°C, steel is stewed for 3.5 hours, then the temperature is raised to 1200°C at 80°C / h, the maximum heating temperature is 1240°C, soaking temperature is 1200-1220°C, and the soaking time is 25 hours;
[0044] 2) Rolling process: II-stage rolling process is adopted, in which the second-stage rolling temperature is 830°C, the final rolling temperature is 795°C, the watering temperature of the rolled steel plate is 670°C, and the steel plate is annealed immediately after rolling;
[0045] 3) Annealing process: the temperature of the steel plate entering the furnace is 370°C, the annealing temperature is 850°C, and the holding time is 1.8min / mm. After the holding time is ...
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Abstract
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