A method for improving the impact toughness of refined high manganese stainless steel and its application
By using an intermediate frequency induction furnace and argon-helium mixed gas blowing method in the smelting of high manganese stainless steel, combined with the addition of rare earth yttrium, the problem of removing slag inclusions in high manganese stainless steel welding materials is solved, and the impact performance and smelting efficiency of the welds are significantly improved.
Patent Information
- Application Number
- CN202411889687.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-04-01
AI Technical Summary
The presence of slag inclusions during the smelting of high manganese stainless steel welding materials leads to an increase inclusions in the welding materials, reducing the impact performance of the welds. It is difficult for the prior art to efficiently remove slag inclusions in the molten steel.
The medium frequency induction furnace was used for smelting, and the argon and helium mixture was blown at the bottom of the furnace. The gas flow was controlled at 20-30L/min, the helium content was 10-30vol%, and the blowing time was 15-20min. Rare earth yttrium was added for further refining to obtain high-purity high manganese stainless steel.
Effectively remove slag inclusions in the molten steel, reduce the inclusion content of welding materials, improve the impact performance of the weld, meet the requirements of high-manganese stainless steel, and simplify operations, significantly improve smelting efficiency.