Invar36铁镍合金厚板热压成形框架模具的数值模拟与验证  

Numerical simulation and verification on hot stamping frame die for Invar36 iron-nickel alloy thick plate

作　　者：邹震宇 张毅 张小波 岳维 陈明英 王强 江开林 Zou Zhenyu;Zhang Yi;Zhang Xiaobo;Yue Wei;Chen Mingying;Wang Qiang;Jiang Kailin(AVIC Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610092,China)

机构地区：[1]成都飞机工业(集团)有限责任公司,四川成都610092

出　　处：《锻压技术》2023年第7期184-191,共8页Forging & Stamping Technology

摘　　要：为解决Invar36铁镍合金复材工装模板成形效果差的问题,通过高温压缩实验,研究了Invar36铁镍合金的高温热变形行为,采用刚塑性有限元法,利用高温压缩实验所得到的材料参数,建立了Invar36铁镍合金厚板热压成形框架模具有限元模型,通过有限元仿真分析研究了不同横纵筋条间距对零件成形效果的影响,并总结了框架式热压模具成形时零件的变形特点。结果表明:在上下模无筋条支撑的区域中,由于零件脊线部位的曲率变化最大、变形量最大,而又无型面支撑,成形效果最差。因此,提出了在零件的脊线部位增加支撑筋条的方案,改进框架式热压模具的结构,并通过热压成形实验,验证了改进的热压模具结构的有效性。In order to solve the problem of poor forming effect of composite material tooling template for Invar36 iron-nickel alloy,the high-temperature hot deformation behavior of Invar36 iron-nickel alloy was studied by high-temperature compression experiments,and the finite element model of hot stamping frame die for Invar36 iron-nickel alloy thick plate was established by rigid-plastic finite element method and material parameters obtained from high-temperature compression experiments.Then,the influences of different transverse and longitudinal rib spacings on the forming effect of part were studied by the finite element simulation analysis,and the deformation characteristics of part during the forming process for the frame hot stamping die were summarized.The results show that in the area where the upper and lower dies are not supported by ribs,and the forming effect is the worst because the curvature change at the ridge line of part and the deformation are the largest,and there is no surface support.Therefore,a scheme of adding support ribs at the ridge line of part is proposed to improve the structure of frame hot stamping die,and the effectiveness of the improved hot stamping die structure is verified by hot stamping experiments.

关 键 词：复材成形工装 热压成形 Invar36铁镍合金 离散框架式模具 横纵筋条间距 

分 类 号：TB33[一般工业技术—材料科学与工程] TG76[金属学及工艺—刀具与模具] V261[航空宇航科学与技术—航空宇航制造工程]