High-strength and anti-seismic reinforcing steel bar and production method thereof
A technology of anti-seismic steel bars and production methods, which is applied in the field of steel bar production, can solve the problems of high cost of high-strength steel bars, and achieve the effects of improving enterprise benefits, easy realization, and cost reduction
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Embodiment 1
[0021] A high-strength anti-seismic steel bar according to Example 1 of the present invention has the following components by weight percentage: C0.15%, Si0.2%, Mn0.3%, N0.03%, Cr0.08%, V0.12% , Ta0.009%, S0.002%, Sr0.008%, P0.002%, the balance is Fe and unavoidable impurities.
[0022] The production method of the high-strength earthquake-resistant steel bar described in the embodiment of the present invention 1, the steps are as follows:
[0023] 1) Put the smelted steel bar billet into the heating furnace, first raise the temperature to 850°C at a rate of 15°C / s, hold for 2 hours, then raise the temperature to 1400°C at a rate of 10°C / s, and hold for 2 hours;
[0024] 2) Take the steel bar billet out of the heating furnace, cool it down to 900°C with water at a rate of 15°C / s, keep it warm for 1 hour, put it into the quenching liquid for quenching, then put it into the tempering furnace, and then heat it at 10°C / s Raise the temperature to 780°C, hold for 3 hours, temper, a...
Embodiment 2
[0030] A high-strength anti-seismic steel bar according to Example 2 of the present invention has the following components by weight percentage: C0.25%, Si0.4%, Mn0.45%, N0.05%, Cr0.09%, V0.21% , Ta0.015%, S0.008%, Sr0.009%, P0.01%, the balance is Fe and unavoidable impurities.
[0031] The production method of the high-strength earthquake-resistant steel bar described in the embodiment of the present invention 2, the steps are as follows:
[0032] 1) Send the smelted steel billet into the heating furnace, first raise the temperature to 760°C at a rate of 12°C / s, keep it for 1h, then raise the temperature to 1300°C at a rate of 8°C / s, and keep it for 0.5h;
[0033] 2) Take the steel bar blank out of the heating furnace, cool it down to 900°C with water at a rate of 15°C / s, keep it warm for 0.5h, put it into the quenching liquid for quenching, then put it into the tempering furnace, and then heat it at 10°C / s Raise the temperature to 700°C at a rate of s, hold for 3 hours, tem...
Embodiment 3
[0039] A high-strength anti-seismic steel bar according to Example 3 of the present invention has the following components by weight percentage: C0.2%, Si0.3%, Mn0.38%, N0.04%, Cr0.085%, V0.17% , Ta0.012%, S0.004%, Sr0.008%, P0.005%, the balance is Fe and unavoidable impurities.
[0040] The production method of the high-strength anti-seismic steel bar described in the embodiment of the present invention 3, the steps are as follows:
[0041] 1) Put the smelted steel bar billet into the heating furnace, first raise the temperature to 800°C at a rate of 14°C / s, hold for 1.5h, then raise the temperature to 1350°C at a rate of 9°C / s, and hold for 1h;
[0042] 2) Take the steel bar blank out of the heating furnace, cool it down to 895°C at a rate of 14°C / s, keep it warm for 1h, put it into the quenching liquid for quenching, then put it into the tempering furnace, and then heat it at 8°C / s Raise the temperature to 750°C, keep it warm for 2.5 hours, temper, and then alternately coo...
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