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  • 液压管爆管的原因,你知道几个?
  • 本站编辑:杭州派跃威流体设备有限公司发布日期:2019-10-22 21:25 浏览次数:

液压管爆管是不少挖机师傅们头疼的问题,由于爆管会造成液压油泄漏,事后的维修费时费力费钱。那么液压管爆管常见的原因有哪些呢?1、使用了劣质的液压管很多人在原装的液压管损坏之后,为了图便宜,很多人选择质量不达标劣质液压管,这种液压管性能、可靠性远不如原装的。另外,液压管两头的金属接头扣压工艺不良,密封性和可靠性无法得到保证,经过一段时间的使用后,就会产生省油甚至漏油。因此,更换液压管一定要选择正规大品牌的产品。2、液压系统压力过高液压系统预设的压力过高会加大爆管的几率,方法是结合各种动作测试主泵产生的压力值,如果确认压力值偏大,可以将多路阀的压力适当调低一些。3、液压油温度过高如果您的机器液压系统高温,也会影响液压元件的密封性,引发爆管泄露;另外高温还会使液压部件膨胀,导致阀芯、阀体卡死,形成局部高温导致爆管。4、混用不同标号的液压油挖掘机出厂一般默认使用46#的液压油,如果在使用过程中添加配件店常见的68#液压油,会造成液压油性质不稳定,损坏元器件。高粘度的液压油流动性较差,会使液压系统局部产生较高的压力,易造成管路泄漏。5、不良的操作习惯如果机手在作业作业时操作粗暴,巨大的冲击负荷会在液压系统中产生瞬时的冲击压力,冲击压力会导致高压油管接头与胶管的压合处过早失效漏油或爆管,大大缩短液压管的使用寿命。另外,粗暴的操作还会影响其他部件的耐久性,使机械故障频发。所以,平时操作挖机动作一定要柔和,不做高强度、高危险性动作。6、液压管被腐蚀虽然现在的液压管大部分具有一定的耐腐蚀性,但毕竟橡胶制品长期接触柴油会使胶体蓬松变质。产生一定的不良影响,尽量不要让胶管接触汽柴油,,一般橡胶在长期浸泡汽柴油中会发胀胶体蓬松。因此,在平时的使用中要避免柴油等腐蚀性液体接触胶管,要经常清洁液压管外表面。7、液压管异常震动齿轮泵和柱塞泵工作时都有油液脉动,这种脉动会使液压管产生高频振动,这种高频振动无法彻底消除。长期的异常震动会导致液压管疲劳磨损,因此,要经常检查液压管的管夹和保护套,管夹一旦松动,将会磨损液压管,甚至将液压管磨穿。

Hydraulic pipe explosion is a headache for many excavators, because the explosion will cause hydraulic oil leakage, after the maintenance of time and money. So what are the common causes of hydraulic tube explosion? 1, the use of poor quality of the hydraulic pipe a lot of people in the original hydraulic pipe damage, in order to figure cheap, a lot of people choose quality substandard poor quality hydraulic pipe, the performance of the hydraulic pipe, reliability is far less than the original. In addition, the two ends of the hydraulic pipe metal joint buckle process is poor, sealing and reliability can not be guaranteed, after a period of time after the use, will produce fuel saving or even leakage. Therefore, the replacement of hydraulic pipe must choose a regular large brand of products. 2, the pressure of the hydraulic system is too high preset pressure of the hydraulic system will increase the probability of tube explosion, the method is combined with various actions to test the pressure value of the main pump, if the pressure value is confirmed to be too high, the pressure of the multi-way valve can be appropriately lowered. 3. If the temperature of the hydraulic oil is too high, the high temperature of the hydraulic system of your machine will also affect the sealing of the hydraulic components, causing leakage of the burst pipe; In addition, high temperature will also make hydraulic components expansion, resulting in the valve core, valve body stuck, forming a local high temperature resulting in tube explosion. 4, mixed with different labels of hydraulic oil excavator factory generally default to the use of 46# hydraulic oil, if the use of 68# hydraulic oil common parts shop will cause instability in the nature of the hydraulic oil, damaged components. High viscosity of the hydraulic fluid flow is poor, will make the hydraulic system local produce higher pressure, easy to cause pipeline leakage. 5, bad operating habits if the operator in the operation of rough operation, the huge impact load will produce instantaneous impact pressure in the hydraulic system, impact pressure will lead to the high-pressure tubing joint and the pressure of the joint premature failure leakage or explosion of the pipe, greatly shorten the service life of the hydraulic pipe. In addition, rough handling can also affect the durability of other components, resulting in frequent mechanical failures. Therefore, usually the operation of excavator action must be soft, do not do high intensity, high risk action. Although most of the current hydraulic pipe has a certain degree of corrosion resistance, but after all, rubber products long-term exposure to diesel will make colloidal fluffy deterioration. Produce certain adverse effect, as far as possible do not let the rubber tube contact gasoline and diesel, general rubber in long-term soaking gasoline and diesel will swell colloidal fluffy. Therefore, in peacetime use to avoid diesel oil and other corrosive liquid contact rubber tube, often clean the surface of the hydraulic pipe. 7, hydraulic pipe abnormal vibration gear pump and plunger pump work have oil pulsation, this pulsation will make the hydraulic pipe produce high frequency vibration, this high frequency vibration can not be completely eliminated. Long-term abnormal vibration will lead to fatigue wear of the hydraulic pipe, therefore, it is necessary to check the pipe clamp and protective sleeve of the hydraulic pipe, once the pipe clamp is loose, it will wear the hydraulic pipe, or even wear through the hydraulic pipe