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液壓管爆管是不少挖機師傅們頭疼的問題，由于爆管會造成液壓油泄漏，事后的維修費時費力費錢。那么液壓管爆管常見的原因有哪些呢？1、使用了劣質(zhì)的液壓管很多人在原裝的液壓管損壞之后，為了圖便宜，很多人選擇質(zhì)量不達標劣質(zhì)液壓管，這種液壓管性能、可靠性遠不如原裝的。另外，液壓管兩頭的金屬接頭扣壓工藝不良，密封性和可靠性無法得到保證，經(jīng)過一段時間的使用后，就會產(chǎn)生省油甚至漏油。因此，更換液壓管一定要選擇正規(guī)大品牌的產(chǎn)品。2、液壓系統(tǒng)壓力過高液壓系統(tǒng)預設的壓力過高會加大爆管的幾率，方法是結合各種動作測試主泵產(chǎn)生的壓力值，如果確認壓力值偏大，可以將多路閥的壓力適當調(diào)低一些。3、液壓油溫度過高如果您的機器液壓系統(tǒng)高溫，也會影響液壓元件的密封性，引發(fā)爆管泄露；另外高溫還會使液壓部件膨脹，導致閥芯、閥體卡死，形成局部高溫導致爆管。4、混用不同標號的液壓油挖掘機出廠一般默認使用46#的液壓油，如果在使用過程中添加配件店常見的68#液壓油，會造成液壓油性質(zhì)不穩(wěn)定，損壞元器件。高粘度的液壓油流動性較差，會使液壓系統(tǒng)局部產(chǎn)生較高的壓力，易造成管路泄漏。5、不良的操作習慣如果機手在作業(yè)作業(yè)時操作粗暴，巨大的沖擊負荷會在液壓系統(tǒng)中產(chǎn)生瞬時的沖擊壓力，沖擊壓力會導致高壓油管接頭與膠管的壓合處過早失效漏油或爆管，大大縮短液壓管的使用壽命。另外，粗暴的操作還會影響其他部件的耐久性，使機械故障頻發(fā)。所以，平時操作挖機動作一定要柔和，不做高強度、高危險性動作。6、液壓管被腐蝕雖然現(xiàn)在的液壓管大部分具有一定的耐腐蝕性，但畢竟橡膠制品長期接觸柴油會使膠體蓬松變質(zhì)。產(chǎn)生一定的不良影響，盡量不要讓膠管接觸汽柴油，，一般橡膠在長期浸泡汽柴油中會發(fā)脹膠體蓬松。因此，在平時的使用中要避免柴油等腐蝕性液體接觸膠管，要經(jīng)常清潔液壓管外表面。7、液壓管異常震動齒輪泵和柱塞泵工作時都有油液脈動，這種脈動會使液壓管產(chǎn)生高頻振動，這種高頻振動無法徹底消除。長期的異常震動會導致液壓管疲勞磨損，因此，要經(jīng)常檢查液壓管的管夾和保護套，管夾一旦松動，將會磨損液壓管，甚至將液壓管磨穿。
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
