A kind of high manganese steel molten steel purification method, product and application

A technology of high manganese steel and liquid steel, applied in the field of high manganese steel, can solve the problems of deterioration of high manganese steel mechanical properties, waste of rare earth, incomplete melting, etc.
CN111961805BActive Publication Date: 2021-04-27YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANSHAN UNIV
Publication Date
2021-04-27

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Abstract

The invention provides a high manganese steel molten steel purification method, product and application. The high manganese steel molten steel uses a silicon aluminum barium calcium alloy for deoxidation operation, and after completion, a heavy rare earth alloy is added to the molten steel to achieve purification and microalloying The purpose of molten steel. In the present invention, the beneficial effect of heavy rare earth treatment is ensured by using silicon aluminum barium calcium alloy wire in advance for deoxidation treatment, the loss of rare earth is reduced, and the yield of rare earth is improved; nitrogen blowing and heavy rare earth alloy wire feeding are carried out at the same time, and nitrogen and yttrium are synergistic function, play the role of nitrogen fixation and increase yttrium, promote the microalloying treatment of nitrogen and yttrium in high manganese steel, and realize the purification and microalloying of high manganese steel; , wear resistance and fatigue performance are significantly improved.
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Description

technical field

[0001] The invention relates to the technical field of high manganese steel, in particular to a method, product and application for purifying molten steel of high manganese steel. Background technique

[0002] High manganese steel has excellent impact resistance and work hardening properties. Its chemical composition (wt.%) is C1.0-1.4%, Mn11-14%, and the rest is Fe and a small amount of impurity elements. The special chemical composition leads to the physical properties of high manganese steel with low thermal conductivity and large linear expansion coefficient, coupled with the influence of factors such as the tendency to form carbides and the high content of impurity elements caused by extensive steelmaking, resulting in hot deformation processing of high manganese steel The workmanship is extremely poor. Therefore, high manganese steel is often produced by casting and used directly after water toughening treatment. The high manganese steel produced by t...

Claims

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