High Level Materials Seamless Pure Calcium Cored Wire

A production method of passivated pure calcium cored wire belongs to the field of refining technology outside the steelmaking furnace. Its steps are: the preparation of passivation liquid, the heating and extrusion of calcium rod into filament, the passivation treatment of calcium filament and the coating treatment of calcium filament, the automatic filling mechanism of the present invention comprises a pressure sensor, a solenoid valve, a passivation liquid pump and a control unit, the liquid outlet of the passivation liquid pump is connected with the liquid inlet of the upper part of the passivation processor through an infusion pipeline, and a solenoid valve is installed on this infusion pipeline; The pressure sensor is installed at the inlet of the upper part of the passivation processor, the signal output end of the pressure sensor is connected with the input end of the control unit, the switch of the passivation liquid pump is connected with the output end of the control unit, and the liquid inlet of the passivation liquid pump is connected with the passivation liquid storage tank through the pipeline. The oxidation loss of calcium line is reduced, and the yield of calcium in molten steel is greatly improved.

1.A pure calcium cored wire for molten steel deoxidation, which is composed of core material and outer skin, and the outer skin is made of 08 aluminum steel strip, which is characterized by: the core material is passivated metal calcium powder, and the metal calcium powder accounts for more than 97% of the weight of the core material. The wire diameter of pure calcium cored wire is 9.0±0.5mm, and the thickness of outer skin 08 aluminum steel strip is 0.45mm. When the molten steel is deeply deoxidized in the form of pure calcium cored wire, the deoxidation efficiency is greatly improved compared with the existing calcium-iron wire because the calcium is at all levels in the molten steel, and it is easy to diffuse in the molten steel, and there is no other harmful element to pollute the molten steel. At the same time, it can further reduce the consumption of calcium per ton of steel, shorten the deoxidation time, greatly improve the saturation of calcium, and reduce the cost of calcium treatment.

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