Deciding on the curved line parameter of large slope angle and vertical suspended belt conveyor;
大倾角和垂直压带式输送机曲线段参数的确定
Aimed at Jetta steering knuckle,the technology of two forging steps in one heat was presented,which combined precision pre-forging by extrusion-belt obliterated extrusion with open finish-forging.
以捷达轿车转向节为研究对象,制定了挤压带式可分凹模闭塞挤压精密预制坯和开式终锻成形相结合的“一火两锻”成形工艺。
Aiming at the obliterated extrusion forming with extrusion-belt of pre-forging part,the influences of punch geometry,extrusion-belt length,mould temperature and lubrication to forming technology were discussed by using DEFORM,then the technology parameters used in the forming were acquired.
针对挤压带式闭塞挤压精密预制坯的成形过程,以DEFORM软件为工具,研究了冲头形状、挤压带长度、模具工作温度、润滑等条件对成形工艺的影响,确定了成形过程中需采用的工艺参数。
In this paper, a new precision forming technology is put forward, which combines pre-forging by separable cavity die extrusion-belt type obliterated extrusion with post-forging.
针对轿车转向节这类复杂枝杈类锻件的成形,提出可分凹模挤压带式闭塞挤压预制坯和终锻相结合的精密成形新工艺,介绍了可分凹模闭塞挤压工艺研究的实验结果和数值模拟结果,提出的新工艺具有降低设备公称压力要求和材料利用率高的重要结论。
The full stress-relaxed area of 2 m,the partial stress-relaxed area of 2～6 m and stress concentration area of 6～12 m were achieved.
结果表明:充分卸压带为2 m,部分卸压带为2~6 m,集中应力带为6~18 m。
Study on microstructures and mechanical properties of 7055 alloy extruded plate in longitudinal and transverse direction;
7055合金挤压带板纵横向的组织与性能
The effects of single aging,duplex aging and conditions between the first and second step agings on the microstructures and properties of the extruded plate of 7050 aluminium alloy were investigated,by means of TEM,tensile and conductivity tests.
采用力学性能和电导率测试及透射电镜组织观察的方法,研究了7050合金挤压带板的单级时效、双级时效及两级时效之间处理条件对合金组织和性能的影响。