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Calcium core aluminum for steelmaking deoxidization and calcium treatment and production method of calcium core aluminum
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A production method and calcium treatment technology are applied in the field of calcium core aluminum, which can solve the problems of polluting the quality of molten steel, increasing the content of steel gas, and using cored wires, so as to achieve the effect of improving the quality of molten steel and improving the qualified rate of quality.
Inactive Publication Date: 2017-10-13
天津炜润达新材料科技有限公司
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[0003] The advantage of the cored wire is that it is easy to make, easy to use, and avoids the danger of metal calcium exposed in the air. However, the cored wire cannot be used in the vacuum treatment process, and can only be used before or after refining. Before use, there is a problem of low calciumrecovery rate, and the operation of feeding calcium line after vacuum refining will increase the gas content in the steel, weaken the effect of vacuum treatment, and pollute the quality of molten steel
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Embodiment 1
[0039] A calcium-cored aluminum for steelmaking deoxidation and calcium treatment, characterized in that it includes calcium particles and an outer layer of pure aluminum, and the calcium particles are wrapped in the outer layer of pure aluminum.
[0040] The outer diameter of the calcium particles is 1 mm.
[0041] Described a kind of above-mentioned production method of calcium-cored aluminum for steelmaking deoxidation and calcium treatment, concrete steps are:
[0042] (1) Arrangement of calcium particles:
[0043] Choose a mold, put calcium particles into the mold according to the content of calcium in the calcium core aluminum, first put the calcium particles into a steel open container, and then put the steel open container into the mold for the production of calcium core aluminum ;
[0044] (2) Molten aluminum pouring:
[0045] Put the aluminum ingot into the aluminum melting furnace, raise the temperature to 750°C, tilt the melting furnace so that the molten alumin...
Embodiment 2
[0052] A calcium-cored aluminum for steelmaking deoxidation and calcium treatment, characterized in that it includes a calcium wire inner core and a pure aluminum outer layer, the calcium wire inner core includes a plurality of calcium wires, and the calcium wire inner core is wrapped in the In the outer layer of pure aluminum.
[0053] Preferably, the diameter of the calcium wire is 3mm.
[0054] The above-mentioned production method of calcium-cored aluminum for steelmaking deoxidation and calcium treatment is characterized in that the specific steps are:
[0056] Choose a mold, put calcium wire into the mold according to the content of calcium in the calcium core aluminum, and directly put the calcium wire into the mold for the production of calcium core aluminum;
[0057] (2) Molten aluminum pouring:
[0058] Put the aluminum ingot into the aluminum melting furnace, raise the temperature to 750°C, tilt the melting furnace so that the mo...
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Abstract
The invention relates to calcium core aluminum for steelmakingdeoxidization and calcium treatment and a production method of the calcium core aluminum. The calcium core aluminum for steelmakingdeoxidization and calcium treatment comprises a calcium particle or calcium wire inner core and a pure aluminum outer layer. The calcium wire inner core comprises a plurality of calcium wires, and the calcium particle or calcium wire inner core is wrapped in the pure aluminum outer layer. The calcium core aluminum has the beneficial effects that according to the obtained product, charging operation can be conducted through a vacuum burden bin, and the problem that metal calcium cannot be placed in air is solved; and the technology problem that during steelmaking vacuum refining production, a calcium feeding line cannot conduct calcium treatment on molten steel is solved, the molten steel quality of the steel subjected to vacuum refining and calcium treatment is greatly improved, and the quality qualification rate of high-grade steel is obviously improved.
Description
technical field [0001] The invention relates to the technical field of calcium-cored aluminum, in particular to a calcium-cored aluminum for steelmaking deoxidation and calcium treatment and a production method thereof. Background technique [0002] At present, the products for steelmaking deoxidation and calcium treatment mainly include silicon-calcium wire, calcium-iron wire and pure calcium wire. The purpose of calcium treatment in steelmaking is mainly to final deoxidize and spheroidize Al in steel 2 o 3 , forming 12CaO.7Al 2 o 3 The inclusions with low melting point float up. Because of the high activity of metallic calcium, it is easy to oxidize when exposed to air, and it is easy to explode when it meets water. [0003] The advantage of the cored wire is that it is easy to make, easy to use, and avoids the danger of metal calcium exposed in the air. However, the cored wire cannot be used in the vacuum treatment process, and can only be used before or after refinin...
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