Method for repairing inner lining of tundish
A tundish and inner lining technology, which is applied to ceramic molding machines, casting molten material containers, manufacturing tools, etc., can solve problems affecting production safety, cracks or defects in the tundish inner lining, and difficulties in the normal turnover of the tundish, so as to reduce Consumption, the effect of increasing the number of turnover
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Embodiment 1
[0021] A method for repairing the inner lining of a tundish. The method adopts a hot repair method for the off-line tundish. Under the condition of a temperature of 100-140°C, the position of the tundish body to be repaired is cleaned first, and then the position to be repaired is evenly repaired. Spray the phosphoric acid binder, and then apply the mixed hot repair material evenly on the position to be repaired, and the thickness of the application is slightly higher than the surface of the body by 4-6mm. Rely on the normal temperature of the body to repair it firmly and dry immediately. The whole process takes 20 minutes, and then it can be used normally after directly applying the lining. The repair compound is made from the following ingredients in proportion by weight:
[0022] Corundum, 150-250 mesh, 10
[0023] Special grade bauxite clinker, particle size 1-5mm, 70
[0024] Al-Mg spinel, particle size 1-5mm, 4
[0025] Mullite, α-Al 2 o 3 with SiO 2 The ratio is 1...
Embodiment 2
[0030] A tundish lining repair method, same as embodiment 1.
[0031] The repair compound is made from the following ingredients in proportion by weight:
[0032] Corundum, 150-250 mesh, 15
[0033] Special grade bauxite clinker, particle size 1-5mm, 80
[0034] Al-Mg spinel, particle size 1-5mm, 6
[0035] Mullite, α-Al 2 o 3 with SiO 2 The ratio is 1:1; 250-300 mesh, 3
[0036] Admixture (pure silicon powder, explosion-proof fiber, steel fiber mixed) 1.5
[0037] Cement 5
[0038] After the above-mentioned raw materials are mixed evenly, the repair material is made. When in use, the weight ratio of the phosphoric acid binder (aluminum dihydrogen phosphate) to the repair material is 1:5.
Embodiment 3
[0040] A tundish lining repair method, same as embodiment 1.
[0041] The repair compound is made from the following ingredients in proportion by weight:
[0042] Corundum, 150-250 mesh, 8
[0043] Special grade bauxite clinker, particle size 1-5mm, 60
[0044] Al-Mg spinel, particle size 1-5mm, 3
[0045] Mullite, α-Al 2 o 3 with SiO 2 The ratio is 1:1; 250-300 mesh, 1
[0046] Admixture explosion-proof fiber, steel fiber 0.5
[0047] After the above-mentioned raw materials are mixed evenly, the repair material is made. When in use, the weight ratio of the phosphoric acid binder (aluminum dihydrogen phosphate) to the repair material is 1:5.
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