摘要
通过DEFORM-3D软件对GH5188卡箍热模锻造过程进行数值模拟,分析了卡箍热模锻造变形过程中的网格流动、应力场、应变场和温度场。GH5188卡箍热模锻造成形分为3个阶段:镦粗成形、毛边成形和再结晶。结果表明:在1000℃和变形速度为20 mm·s^(-1)条件下进行热模锻得到的锻件的流线分布合理、变形均匀,主体无应力集中,锻件表面无缺肉、折叠等缺陷;锻后晶粒细化现象主要存在于连皮拐角处和毛边中,卡箍整体的晶粒尺寸一致。因此,该工艺方案合理并可行,为卡箍实际锻造生产提供了理论指导。
The hot die forging process of GH5188 clamp was simulated by software DEFORM-3 D, and the grid flow, stress field, strain field and temperature field during the hot die forging deformation process of clamp were analyzed. However, the hot die forging for GH5188 clamp was divided into three stages of upsetting forming, burr forming and recrystallization. The results show that the forgings obtained by hot die forging at 1000 ℃ and the deformation speed of 20 mm·s^(-1)has reasonable streamline distribution, uniform deformation, no stress concentration on the main body, and no defects such as lack of material or folding on the surface of forgings, the grain refinement phenomenon after forging mainly exists in the corners and burrs of joint, and the grain size of the whole clamp is consistent. Thus, the process scheme is reasonable and feasible, which provides theoretical guidance for the actual forging production of clamps.
作者
刘大海
陈劲东
柴浩瑞
郭正华
朱长安
Liu Dahai;Chen Jindong;Chai Haorui;Guo Zhenghua;Zhu Chang′an(School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China;Xiangying Aviation Industry Co.,Ltd.,Dexing 334200,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2022年第6期9-16,共8页
Forging & Stamping Technology
基金
江西省重点研发计划项目(20202BBEL53011)
江西省重大科技研发专项项目(20194ABC28001)。
