核燃料中子吸收板生产核心技术研究与应用  

Research and application on core technology of nuclear fuel neutron absorption plate production

作　　者：张君[1,2] 杨建[1] 陈永甲[1] 薛菲菲[1] 张宗元[1] Zhang Jun;Yang Jian;Chen Yongjia;Xue Feifei;Zhang Zongyuan(State Key Laboratory of Metal Extrusion and Forging Equipment Technology, China National Heavy Machinery Research Institute Co., Ltd., Xizan 710032, China;School of Materials Science and Engineering, Northwestern Polytechnical University, Xizan 710072, China)

机构地区：[1]中国重型机械研究院股份公司金属挤压与锻造装备技术国家重点实验室,陕西西安710032 [2]西北工业大学材料科学与工程学院,陕西西安710072

出　　处：《锻压技术》2019年第7期21-28,共8页Forging & Stamping Technology

基　　金：国家科技重大专项(2011ZX04016-081);国家“万人计划”科技创新领军人才特殊支持项目和陕西省重点科技创新团队(2013KCT-10)

摘　　要：介绍了核燃料中子吸收板的生产装备和工艺,采用理论分析和数值模拟相结合的方法,确定了合理的坯料加热温度、挤压筒加热温度、挤压速度参数,并在5和26 MN金属挤压机上进行了试验,确定了核燃料中子吸收板的挤压速度为0. 8~1. 0 mm·s-1,挤压筒加热温度为490~510℃;按照挤压速度要求,开发了挤压速度低速闭环精确控制系统,实现了核燃料中子吸收板的低速稳定挤压;按照挤压温度要求,开发了带有在线模具加热的挤压温度准确控制系统。在此基础上建立了36 MN核燃料中子吸收板挤压生产线,在国内首次挤压生产了难变形铝基碳化硼中子吸收板,板材各项数据均满足核燃料储存器的要求。The production equipment and process of nuclear fuel neutron absorption plate were introduced,and the reasonable parameters of heating temperature of billet,heating temperature of extrusion container and extrusion speed were determined by combining theoretical analysis with numerical simulation. Then,the experiments were conducted by 5 and 26 MN metal extrusion presses,and the extrusion speed of nuclear fuel neutron absorption plate of 0. 8-1. 0 mm·s-1 and the heating temperature of extrusion container of 490-510 ℃were determined. Furthermore,according to the extrusion speed requirement,a closed-loop precise control system of extrusion speed at low speed was developed to realize stable extrusion of nuclear fuel neutron absorption plate at low speed,and according to the extrusion temperature requirement,an accurate extrusion temperature control system with on-line die heating was developed. On this basis,a 36 MN extrusion production line for nuclear fuel neutron absorption plate was established,and the neutron absorption plates of aluminumbased boron carbide which is difficult in deformation was extruded in China for the first time. The results show that all data of plates meet the requirements of nuclear fuel storage tank.

关 键 词：挤压 核燃料 中子吸收板 速度控制 温度控制 铝基碳化硼陶瓷增强材料 

分 类 号：TG37[金属学及工艺—金属压力加工]