超大型储能飞轮锻件晶粒细化工艺研究

打开文本图片集

Research on grain refinement process of forgings for ultra-large energy storage flywheels

YANG Xiaohan， CHEN Taihui， SHI Lijia， ZHANG Jinzhu

ChinaFirst Heavy Industries Tianjin HeavyEquipment Engineering Research Co.，Ltd.，Tianjin 3O0457，China

Abstract： For the large energy flywhel forgings of 30Cr2Ni4MoV steel with an axle body diameter of nearly 3m， dueto the large upseting ratio forging，the grains in the difficult deformation Zzone are coarse and the microstructure inheritance is severe.The traditional multiple normalizing process is difficult to efectively refine the grains of such forgings and is hard to meet the flaw detection requirements.Therefore，the isothermal transformation“nose temperature” of the material was experimentally determined，and then a dedicated isothermal transformation process was developedand applied in enginering practice.This effectively improved the grainrefinement effect and economic eficiency of the forgings，providing key technical support for thequality control of similar super-large forgings.

Keywords： energy storage flywheel forgings;large upsetting ratio; grain refinement;isothermal transformation

1序言

为适应电力行业发展需求，国家各项清洁能源政策和储能产业扶持政策相继出台，储能技术领域发展迅速。（剩余4929字）