摘要
为了优化TA2钛管挤压模具结构,本文建立了TA2管材的平锥模热挤压有限元模型,分别对挤压温度为600℃、650℃、700℃,挤压速度为50mm/s、100mm/s、150mm/s,平模长度为7%D、9%D和11%D,模角为55°、60°、65°、70°的挤压模型进行了模拟,研究了诸参数对金属钛流动及挤压力的影响。以切头率、压余比和挤压力系数最小为评判标准,得出平锥模的平模长度为9%D,模角为60°时结构最优的结论。
In order to optimize the extrusion die structure of TA2 tube, a finite element model of hot extrusion has been created in the text, with which the extrusion processes have been simulated under the following circumstances: when flat die length is 7%D, 9%D and 1 l%D, die angle is 55°, 60°, 65°, 70°, extrusion temperature is 600℃ ,650℃,700℃, and punch speed is 50mm/s, 100mm/s, 150mm/s.From the simulation results, the influence of various parameters on metal flow and extrusion force can be clearly seen. According to the minimum top crop ratio, extrusion excess stocks ratio and extrusion force coefficient rule, the structure of die has been optimal when flat die length is 9%D and die angle 60°.
出处
《锻压装备与制造技术》
2009年第6期88-91,共4页
China Metalforming Equipment & Manufacturing Technology