Alloyed nickel-chromium-iron composite alloy for final deoxidizing in steel-making
A composite alloy and alloying technology, applied in the field of steel alloys and Al-Ni-Cr-Fe composite alloys, can solve the problems of uneven deoxidation effect, troublesome deoxidation process, poor yield, etc., and achieve fast diffusion melting speed and deoxidation. The effect of good alloying effect and high yield
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Embodiment 1
[0022] In terms of weight percentage, the composition of AlNiCrFe composite alloy is as follows: C 0.18; Si1.0; P 0.025; S 0.021; Al35; Ni 30; Cr30; Fe balance.
[0023] Al-Ni-Cr-Fe composite alloy of the present invention is used for the production of steel grade G20Cr2Ni4, and carries out final deoxidation; When the molten steel is discharged into the large tank 1 / 5, various alloys are added, also including the Al-Ni-Cr-Fe composite alloy of the present invention to add 1-3kg / ton of molten steel, all the alloys are added when the molten steel is discharged into the large tank 4 / 5, the slag should be blocked during tapping, and the tapping hole should be replaced and repaired in time to reduce the excessive flow of steel slag into the molten steel during the tapping process In the large tank, the loss of alloy materials is reduced, creating conditions for post-furnace refining. The composition and properties of the steel after the furnace are shown in Table 2.
[0024] Tab...
Embodiment 2
[0027] The difference from Example 1 is:
[0028] In terms of weight percentage, the composition of AlNiCrFe composite alloy is as follows: C 0.24; Si 0.5; P 0.028; S 0.034; Al10; Ni 25; Cr35; Fe balance.
Embodiment 3
[0030] The difference from Example 1 is:
[0031] In terms of weight percentage, the composition of AlNiCrFe composite alloy is as follows: C 0.3; Si 1.0; P 0.017; S 0.036; Al 20; Ni 40; Cr 30; Fe balance.
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