Coated wire with flexible coating

Abstract

The flexible coated wire includes outer coating of steel belt, powder material layer comprising alloy powder, metal powder or non-metal powder coated inside the outer coating, and core wire inside the powder material layer, and has one flexible coating with asphalt as adhesive coated on the surface of the core wire. The flexible coated wire features that after outer coating fails, the flexible coating and the sintered powder material layer will further protect the magnesium core wire and the magnesium core wire may be further inserted into the bottom of molten iron ladle to add magnesium in controlled amount and raised efficiency. In addition, the present invention makes it possible to realize the spheroidization and inoculation of molten iron with only one coated wire in low apparatus cost and realize clean production and high efficiency application

Description

technical field [0001] The invention relates to a flexible coated core wire cored wire. Background technique [0002] The known cored wire is composed of steel strip and powder wrapped in the steel strip, and then it is fed into the bottom of the ladle by a wire feeder to react with molten iron or molten steel, so as to increase the concentration of the fed elements in the molten iron. Or for the purpose of utilization or absorption of molten steel. When the powder layer of the fed cored wire contains magnesium, such as feeding a cored wire containing magnesium powder or magnesium alloy powder in molten iron for desulfurization and spheroidization of molten iron, the vaporization point of magnesium is only 1080C, and the temperature of the molten iron passing through is as high as 1450-1550°C, which is much higher than the vaporization temperature of magnesium. Therefore, during the process of passing through the molten iron, the magnesium powder...

AI Technical Summary

Problems solved by technology

[0003] 1) When the molten iron is spheroidized, the molten iron is in a turbulent state, and the treatment bag needs to leave enough space for the boiling of the molten iron, generally within the range of 350-500mm, and the effective utilization rate of the treatment bag is low;

[0004] 2) The effective rate of magnesium in molten iron (the percentage of the ratio of the sum of magnesium dissolved in molten iron and magnesium for desulfurization to the total amount of magnesium added) is low, and the amount of magnesium escaping from molten iron burns after contacting with air is large. serious air pollution;

[0006] 4) Wire feeding technology must be realized with proprietary equipment, so equipment must be invested

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