Titanium-contained high-strength and high-toughness nonmagnetic steel and manufacturing method thereof
A manufacturing method and technology for non-magnetic steel, applied in the field of non-magnetic steel, can solve the problems of easy generation of mesh carbide, complicated production process and high production cost, and achieve the effects of improving strength, reducing production cost and reducing energy consumption.
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Embodiment 1
[0050] 1) Smelting in an electric arc furnace, and pouring into steel ingots, the composition weight percentages are as shown in Table 1;
[0051] 2) The steel ingot is heated to 1170°C in a soaking furnace for 5 hours, and the billet is rolled into a slab and then cooled to room temperature;
[0052] 3) Heat the slab to 1140°C for 5 hours, and carry out the first-stage rolling on the medium and thick plate rolling. The rolling temperature is 1090°C. 880°C; followed by the second stage of rolling, the rolling temperature is 880°C, and rolled to the thickness of the finished steel plate; the pass deformation rate of the second stage rolling is 15-25%, and the final rolling temperature is 820°C; Air cool to room temperature on a cooling bed.
Embodiment 2
[0054] 1) Smelting in an electric arc furnace, and pouring into steel ingots, the composition weight percentages are as shown in Table 1;
[0055] 2) The steel ingot is heated in a soaking furnace to 1140°C for 5 hours, and the billet is rolled into a slab and then cooled to room temperature;
[0056] 3) Heat the slab to 1150°C for 5 hours, and carry out the first-stage rolling on the medium and thick plate rolling. 900°C; followed by the second stage of rolling, the rolling temperature is 900°C, and the rolling is to the thickness of the finished steel plate; the pass deformation rate of the second stage rolling is 10-20%, and the final rolling temperature is 840°C. Air-cool to room temperature on a cooling bed after rolling.
Embodiment 3
[0058] 1) It is smelted in an electric arc furnace and cast into steel ingots. Its composition weight percent is as shown in Table 1;
[0059] 2) The steel ingot is heated in a soaking furnace to 1130°C for 5 hours, and the billet is rolled into a slab and then cooled to room temperature;
[0060] 3) Heat the slab to 1140°C for 5 hours, carry out the first stage of rolling on the medium and thick plate rolling, start rolling at 1080°C, and wait for the temperature on the roller table to reach 3 times the thickness of the finished product. 860°C; followed by the second stage of rolling, the rolling temperature is 860°C, and rolled to the thickness of the finished steel plate; the pass deformation rate of the second stage rolling is 16-25%, and the final rolling temperature is 820°C; after rolling Air cool to room temperature on a cooling bed.
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