国泰东工电渣钢
河南国泰东工电渣钢有限公司是由济源钢铁（集团）有限公司和东北大学工业技术研究院、沈阳华盛公司共同投资组建的。目前一期已经建成有全球最长单支臂气氛保护15T、25T电渣炉各1台，可采用固定和抽锭两种方式进行生产，其不交换电极（自耗电极长10.4m）抽锭式气氛保护工艺为世界首创。
本项目电渣重熔采用全封闭气氛保护，可实时检测腔内压力及氧含量，保证钢的高洁净度；采用电极称重、同轴导电、电流摆动控制，保证钢锭重熔时的凝固对称性；熔化速度精准控制实现全自动智能熔炼，保证精度及稳定性，进一步提高产品质量。
本项目抽锭工位电渣锭最大断面为ø900mm，锭重可达25t，锭高可达3000mm；固定工位电渣锭最大断面为ø1050mm,锭重可达15t，锭高可达3000mm。尤其是抽锭工艺生产的430X500X6000mm、ø600 X 6000mm电渣锭可进连续加热炉加热和连轧线轧制，生产高效、成材率高。该项目的投产，标志着我国电渣钢生产再上一个新台阶。
主要产品有军工轴承用钢、铁路轴承用钢、风电轴承用钢、高端模具用钢和高端齿轮用钢等，广泛地应用于交通运输、能源、国防工程、航空航天、石油化工、海洋工程、机械制造等关乎国民经济及国家安全的重要领域。
Henan Guotai Donggong Electroslag Steel Co., Ltd. is a joint investment by Henan Jiyuan Iron & Steel (Group) Co., Ltd., NEU Industrial Technology Research Institute, and Shenyang Huasheng Company. The first phase has been completed with the installation of the world’s longest single-arm atmosphere-protected 15T and 25T electroslag furnaces, which can be used for production using both fixed and ingot extraction methods. Its non-exchangeable electrode (self-consuming electrode length of 10.4m) withdrawal type atmosphere-protected process is a world-first innovative achievement.
The project utilizes fully enclosed atmosphere protection for electroslag remelting, enabling real-time monitoring of chamber pressure and oxygen content to ensure high cleanliness of the steel. It adopts electrode weighing, coaxial conduction, and current swing control to guarantee symmetrical solidification during steel remelting. Precise control of melting speed achieves full-automatic intelligent smelting, ensuring accuracy and stability, thereby further enhancing product quality.
The maximum cross-section of the electroslag ingot at the withdrawal station in the project is ø900mm, with a maximum ingot weight of 25t and a maximum ingot height of 3,000mm; at the fixed station, the maximum cross-section of the electroslag ingot is ø1,050mm, with a maximum ingot weight of 15t and a maximum ingot height of 3,000mm. Particularly noteworthy are the 430×500×6,000mm and ø600×6,000mm electroslag ingots produced through the withdrawal process, which can be heated in continuous heating furnaces and processed in continuous rolling lines, resulting in efficient production and high yield. The commissioning of the project signifies a new milestone in electroslag steel production in China.
The main products include steel for military bearings, railway bearings, wind power bearings, high-end mold steel, and high-end gear steel. They are widely used in important fields related to national economy and security, such as transportation, energy, national defense projects, aerospace, petrochemicals, marine engineering, and mechanical manufacturing.
