通宇滤业液压油
  液压系统已经在冶金设备中广泛应用,特别是在带钢连轧机上采用电子计算机自动控制的液压压下系统,标志着七十年代的*水平。因生产的迅速发展,就要求提高速度,严格控制精度,才能获得优质高产,这就促使液压系统采用电液伺服机构,从而大幅度地提高了自动控制程度。为了提高控制系统的反应直线性和灵敏性,减小滑阀的间隙是主要的措施,因而要大幅度地提高元件的制造精度。以莫格(MOOG73型)电液伺服阀为例,其阀芯与阀套的间隙仅0.。。0050时(1 .225微米),直径公差小于0.25微米,加工精度达到ISAI级精度。我国三机部609研究所生产的                 
洁净度标志着七十年代液压技术的新水平。液压油的洁净度直接影响系统的运行状况。电液伺服系统要求液压油的洁净度zui严格。洁净度的级别用得zui广泛的是NAS和MOOG标准。洁净度的检测方法使用Millipore仪zui普遍,分为计数法和重量法两种。要防止液压油不被污染是不可能的,但通过人们的努力是可以控制污染的。文中分析了污染颗粒的来源,为了控制污染,提出了从设计上应采取的措施,和设备安装施工中应采取的措施,以及在运行操作中应采取的一些措施,介绍了武钢一米七轧机的一些经验。

◆  执行ISO4572多次通过试验，ISO2941滤芯完整性试验等7项标准。
  ◆  过滤比值β:200，精度值可达到1、2、3、5、10、20……um。
  ◆  可承受10－42Mpa工作压力范围，zui大流量200L/min。
  ◆  过滤精度高，通油量大，原始阻力小，纳污量大。

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