Integral column of sagger in composite structure
A technology of integral stopper and composite structure, which is applied in the direction of casting melt containers, metal processing equipment, casting equipment, etc., can solve the problems of carbon-containing rod head corrosion, inapplicability, and difficulty in adapting to the development of continuous casting technology, and achieve high-resistant steel High liquid erosion and peeling resistance
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Embodiment 1
[0013] The prepared overall stopper rod body and the internal aluminum carbon ingredients of the rod head are brown corundum 60%, sintered alumina powder 10%, flake graphite 22%, silicon carbide powder 6%, metal silicon powder 2%, binder phenolic resin as ingredients 10% by weight; carbon-free surface ingredients are 70% fused white corundum, sintered Al 2 o 3 20%, metal silicon powder 10%, aluminum silica sol (Al 2 o 3 Content 22%, SiO 2 Content 6%), consumption is 8% of surface layer batching weight. Add the above two ingredients to the kneading machine and mix them evenly with a binder. After drying at 70°C, inject them into the rubber sleeve for isostatic pressing. Injection, the interface between the two is the best
[0014] Broken line shape, molding pressure 130Mpa, hold pressure for 3 minutes. After forming, the body is heat-treated at 1350°C for 3 hours in a nitrogen atmosphere in a shuttle kiln, and then processed and painted with anti-oxidation paint.
Embodiment 2
[0016] The aluminum carbon ingredients inside the rod body and the rod head are 60% of brown corundum, 10% of sintered alumina powder, 22% of flake graphite, 6% of silicon carbide powder, 2% of metal silicon powder, and the binder phenolic resin is 10% of the weight of the ingredients; The carbon-free surface material is sintered magnesium aluminum spinel (Al 2 o 3 76-78% normal spinel) 67% sintered Al 2 o 3 25%, magnesium oxide powder 3%, aluminum-magnesium alloy powder 5%, aluminum-magnesium sol (Al 2 o 3 Content 18%, MgO content 6%) is 5% of surface layer batching weight. Add the above two ingredients to the kneading machine and mix them evenly with a binder. After drying at 70°C, inject them into the rubber sleeve for isostatic pressing. , the interface between the two is best to take a broken line shape, the molding pressure is 150Mpa, and the pressure is kept for 3 minutes. After forming, the body is heat-treated at 1350°C for 3 hours in a nitrogen atmosphere in a ...
Embodiment 3
[0018] The aluminum carbon ingredients inside the rod body and the rod head are 60% fused sub-white corundum, 10% sintered alumina powder, 22% flake graphite, 6% silicon carbide powder, 2% metal silicon powder, and the binder phenolic resin is the weight of the ingredients. 10%; carbon-free surface ingredients are 30% sintered corundum, 40% sintered magnesium aluminum spinel, sintered Al 2 o 3 10%, metal aluminum powder 20%, aluminum sol for binder (Al 2 o 3 Content 25%) is 10% of surface layer batching weight. Add the above two ingredients to the kneading machine and mix them evenly with a binder. After drying at 70°C, inject them into the rubber sleeve for isostatic pressing. Injection, the interface between the two is preferably in a broken line shape, the molding pressure is 130Mpa, and the pressure is maintained for 3 minutes. After forming, the body is heat-treated at 1300°C for 3 hours in a nitrogen atmosphere in a shuttle kiln, and then processed and painted with a...
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