CAJ | 학술논문

大型空心锻件的锻造过程主要分为镦拔、冲孔和芯轴拔长三个工序，其中芯轴拔长为主要的成形工序。以DEFORM-3D为分析软件建立芯轴拔长的数值模型，对空心锻件的芯轴拔长过程进行数值模拟分析，并分别从金属塑性变形的流动规律、内孔畸变率以及锻件内部的应力场、应变场等方面研究不同锻造工艺参数对内在影响规律。获得合理工艺参数组合，以指导实际的生产过程。
대형공심단건적단조과정주요분위대발、충공화심축발장삼개공서，기중심축발장위주요적성형공서。이DEFORM-3D위분석연건건립심축발장적수치모형，대공심단건적심축발장과정진행수치모의분석，병분별종금속소성변형적류동규률、내공기변솔이급단건내부적응력장、응변장등방면연구불동단조공예삼수대내재영향규률。획득합리공예삼수조합，이지도실제적생산과정。
The forging process of heavy hol ow forging mainly includes upsetting and stretching,punching and mandrel drawing and the main forming process is the mandrel drawing. The numerical model of mandrel drawing is built base on DEFORM3D and its forging process is simulated. From the aspects of flow law in metal plastic deformation,distortion ratio of inner hole and the stress field,strain field of metal,the influence of the different process parameters on the forging quality is reseached on. The actual production process is improved with the reasonable process parameters.