A method of producing a nickel-based superalloy casting

By optimizing the nickel-based superalloy casting process and employing technologies such as side-gating systems, 3D-printed core assembly, and specific heat treatment, the problems of element segregation and defects in nickel-based superalloy castings have been solved, enabling the production of high-quality castings.

CN122400519APending Publication Date: 2026-07-17KOCEL STEEL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KOCEL STEEL
Filing Date
2026-05-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing nickel-based superalloy casting process, there are problems such as element segregation, shrinkage cavities, porosity, cracks and hot cracks, which lead to uneven casting properties and reduced yield.

Method used

The casting process design and parameter control are optimized by employing a side-casting system, 3D printing core molding, MF+AOD dual-furnace combined melting, argon blowing protection casting, simulated auxiliary mold making and specific heat treatment, combined with ceramic foam filters and surrounding argon blowing ring device.

Benefits of technology

It effectively suppresses defects such as shrinkage cavities, porosity, and cracks in castings, improves the internal quality and performance stability of castings, and significantly increases the yield.

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Abstract

本申请涉及金属铸造技术领域,尤其是涉及一种镍基高温合金铸件的生产方法,旨在解决铸件缩孔、疏松、裂纹及夹渣等缺陷问题。该方法采用侧浇浇注系统,内浇口设于暗冒口侧面,横浇道二分设计并横放至少两个过滤器,直浇道连接处设缓冲器;应用MF+AOD双炉联合熔炼,控制MF熔炼温度1580~1600℃,AOD炉动态调节氧化期气体比例,还原期加铝脱氧脱硫,出钢温度1520~1550℃;浇注时在浇口设吹氩保护装置形成高纯氩气膜;铸件冷却至500~600℃高温打箱;热处理以30~40℃ / h升温至1175℃以上保温6~8h;冒口切割温度80~100℃,速度60~80mm / min。该方法能有效抑制铸造缺陷,显著提升铸件内部质量、力学性能及成品率。
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