挤压机液压定针系统的研究  

Hydraulic needle systems of extrusion presses

作　　者：韩泓[1] 

机构地区：[1]太原重型机械集团公司技术中心,山西太原030024

出　　处：《重型机械》2013年第4期34-36,共3页Heavy Machinery

摘　　要：针对用于挤压机定针速度控制的原来的泵控系统存在稳定性差,控制精度不高的缺点,提出一种大通径电液比例方向阀的阀控系统,并对该阀阀芯位置控制、流量特性进行研究,建立了电液比例阀阀芯位移控制系统的数学模型。A large-diameter electro-hydraulic proportional position valve control system was proposed aiming at improving the weak stability and the low precision of the pump system for the extrusion press needle control. The position control of the valve stem and flow rate were studied. Finally a mathematical simulation for the elec- tro-hydraulic proportional valve stem control system was established.

关 键 词：挤压机 电液比例控制阀 液压定针 

分 类 号：TG375.9[金属学及工艺—金属压力加工]