A high-efficiency production process of high aluminum alloy structural round steel

A production process and technology of aluminum alloy, applied in the direction of manufacturing converters, etc., can solve the problems of aluminum not reaching the ideal, aluminum is not easy to add, easy to block the nozzle, etc., to achieve stable aluminum yield, high aluminum absorption rate, avoidance of low temperature effect
CN105177215BActive Publication Date: 2017-03-22ZENITH STEEL GROUP CORP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZENITH STEEL GROUP CORP CO LTD
Publication Date
2017-03-22

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Abstract

The invention relates to a production method of round steel, in particular to an efficient production process of high aluminum-alloy-content structure round steel. Al accounts for 0.70-1.20% in the round steel by weight. The preparation method comprises the converter smelting process, the LF external refining process, the VD furnace vacuum refining process, the square bloom continuous casting process and the rolling process. The high aluminum-alloy-content structure round steel produced through the method is low in cost, high in purity and good in castability, the adsorption rate of aluminum can be higher than 95%, calcium treatment is not needed, sequence casting of 12-15 times can be achieved, the production efficiency is greatly improved, the surface quality of the round steel is high, and the technical problems of high aluminum-alloy-content structure round steel produced in the prior art that the continuous castability is poor, nodulation occurs easily, the adsorption rate of aluminum is low, the yield is unstable, the purity is low, the surface quality of the round steel is low and the quality is unstable are solved.
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Description

technical field

[0001] The invention relates to a steel production method, in particular to a high-efficiency production process for round steel with high aluminum alloy structure. Background technique

[0002] The aluminum content of high aluminum alloy structural steel is extremely high, as high as 0.70-1.20%. It usually belongs to the category of aluminum-containing nitrided steel. After nitriding treatment, an aluminum nitride layer is formed in the nitrided layer of the steel. According to the dispersion of aluminum nitride Hardening can improve the surface hardness and strength of steel, so as to obtain hard, wear-resistant and corrosion-resistant properties. It is widely used in the aviation industry, conventional weapons and machinery manufacturing industries, such as tube blank engine gas steel sleeves, screw rods and sleeves of injection molding machines. Parts with special requirements such as barrels. The domestic and foreign annual demand of the injection moldi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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