Method for smelting high-temperature alloy with ultrahigh N content in VIM furnace

US12258652B2 · kind B2 · utility

Assignee

• DAYE SPECIAL STEEL CO., LTD. · CN

Inventors

• Xiaoli Yang · Shanghai, CN
• Li Wang
• Yinghua Lei · Hubei, CN
• Zhicheng Zhang · Hangzhou City, CN
• Linsen Li · Beijing, CN
• Zheng Cao · Haidian District, CN
• Shoulei Gao · Hubei, CN
• Xiaolei Zhang · Shanghai, CN

Key dates

• Filing date: May 25, 2022
• Grant date: Mar 25, 2025
• Expiry date: May 25, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C33/04
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed in the present disclosure is a method for smelting a high-temperature alloy with an ultrahigh N content in a VIM furnace, and a high-temperature alloy with an ultrahigh N content. The VIM-furnace smelting method comprises a smelting step performed in a VIM furnace, and a casting step, wherein at a later stage of smelting, a nitrogen-containing substance is added to the VIM furnace to adjust the content of N. In the present disclosure, by comprehensively improving the raw materials, the smelting process, etc., the yield of N during a VIM-furnace smelting process is increased and accurate control over the content of N in the high-temperature alloy is achieved, such that a target content of nitrogen can be guaranteed, and an ideal product can thus be obtained.