Baffle for special-shaped blank continuous casting machine tundish and preparation method thereof
A technology of profiled billet continuous casting and deflectors, which is applied in the field of profiled billet continuous casting tundish technology in iron and steel metallurgy, can solve problems such as uneven flow field of molten steel, achieve the effects of reducing excess injection, prolonging service life, and promoting floating removal
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Embodiment 1
[0032] A deflector for the tundish of a profiled billet continuous casting machine, which adopts a magnesium prefabricated part and is composed of the following materials by weight percentage: fused magnesia: 10-5mm28%; 5-3mm14%, 3-1mm25% , 1~0.074mm20%, 2 Ultrafine powder 1.5%.
[0033] The fused magnesia is a first-grade fused magnesia containing MgO≥97% (weight ratio), and the SiO 2 Superfine powder, of which SiO 2 Content ≥ 92%, particle size less than 5 μm, and particle size less than 2 μm accounted for 80-85%.
[0034] The deflector (2) has an arc-shaped overall structure, the radian α of the deflector is 92°, the height H is 750mm, the thickness h is 160mm, the upper width a of the trapezoidal groove is 120mm, and the lower width b is 200mm. The groove height c is 250 mm.
[0035] After weighing the above-mentioned materials according to the stated proportion, add them into the mixer for dry mixing for 2-3 minutes, add 6-8% water of the total weight of the materials,...
Embodiment 2
[0039] Others are the same as embodiment 1, the difference is:
[0040] The deflector used for the tundish of the profiled billet continuous casting machine is made of magnesium prefabricated parts, and is composed of the following materials by weight percentage: fused magnesia: 10~5mm particle size 30%, 5~3mm particle size 12%, 3~3mm particle size 1mm particle size 24%, 1~0.074mm particle size 21%, 2 Ultrafine powder 1.8%.
[0041] The deflector (2) has an arc-shaped overall structure, the radian α of the deflector is 95°, the height H is 800 mm, the thickness h is 180 mm, the upper width a of the trapezoidal groove is 102 mm, and the lower width b is 235 mm. The groove height c is 210 mm.
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