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从六十年代以来,本所设计和制造了多种超高压液压机,有3600～30000吨铰式六面顶超硬材料液压机、1600吨粉末制品液压机、3150吨模膛挤压液压机等,其液压来源均采用1000～1500公斤/厘米~2的超高压工作液体。因此系统中超高压油缸摩擦副及其密封常常发生问题,例如密封圈更换频繁,摩擦副拉伤(成沟状),甚至“咬死”等等。为此,我们对1500公斤/厘米~2工作油液的超高压摩擦副及其密封作了一定的试验研究工作。一、超高压缸——柱塞摩擦副及其密封存在的问题
Since the 1960s, we have designed and manufactured a variety of ultra-high pressure hydraulic machines, 3600 ~ 30,000 tons of hinged six top super hard materials hydraulic machine, 1,600 tons of powder products hydraulic machine, 3,150 tons of die cavity hydraulic press, the hydraulic Sources are used 1000 ~ 1500 kg / cm ~ 2 ultra-high pressure working fluid. Therefore, the system of high pressure cylinder friction and seal often occur problems, such as frequent replacement of seals, friction deputy strangulation (groove), and even “killed” and so on. To this end, we have 1500kg / cm ~ 2 working fluid ultra-high pressure friction pair and its seal made a certain experimental work. First, the high pressure cylinder - plunger friction pair and its sealing problems