Interaction CenterThe introduction of complete sets of equipment in the metallurgical industry, most of its configuration Rexroth hydraulic station, American Parker, Europe, Japan and other countries, high production, high flow hydraulic plunger pump. In the equipment put into use, due to the introduction of no hydraulic piston pump specifications corresponding, online state monitoring method of not understanding the pump and maintenance method and use the soft life, (soft life, is provided for equipment design when the tenure of use). Therefore, some domestic enterprises equipment management that: foreign hydraulic piston pump performance is good, long service life, as long as the hydraulic pump in operation, system pressure can achieve, you do not repair, also did not establish corresponding hydraulic pump field inspection rules and regulations, management mistakes resulting in hydraulic piston pump inlet. Imports of machinery equipment and hydraulic piston pumps, are in service period. Correct monitoring service duration depends on the cleanliness of hydraulic medium and equipment operation, maintenance and maintenance. This article discusses the main pump line detection, predict the repair, maintenance, replacement and adjustment.
進口的液壓泵的磨損分為初期磨損，正常磨損，異常磨損三個階段。
The wear of hydraulic pump imported into the early wear, normal wear, abnormal wear three stages.
泵在零件制造過程中，零件金屬表面有一定的微觀不平度（表面粗糙度）軸或孔存在的橢圓度與不直度，在金屬表面發(fā)生初期相對運動時，泵零件間相對高速運動，此時摩擦副間會產(chǎn)生輕微的摩擦磨損，零件處于初期磨損階段。
Pump parts manufacturing process, the parts have some microscopic metal surface roughness (surface roughness) of the shaft or hole ellipticity and non existence of straightness, early in the relative motion of metal surface occurs, pump parts between the relative motion, the friction generated between the friction and wear parts in the early light, wear stage.
經(jīng)過一段時間的磨合，摩擦副間生成新的，精度等級更高的粗糙度，磨損速度減慢。進入一段相對比較長的穩(wěn)定使用階段。
After a period of running, generated between the friction pair of new, higher level of accuracy of the roughness, wear rate. Into a relatively long period of stability in use.
在此階段中，金屬材料達到疲勞周期的額定壽命，金屬表面將產(chǎn)生疲勞層，疲勞層在泵高溫高壓的特殊使用狀態(tài)下，金屬表層易發(fā)生顆粒狀脫落，因此，磨損急劇增長，最后導致零件失效。泵在運行中的相對運動的三對摩擦副（靜壓軸承關系）零件之間的磨損，使零件間的縫隙增大，泵內泄漏量隨之增多，油溫也相應升高。泵軟壽命是從初期磨合期到穩(wěn)定使用階段進而到疲勞剝落期階段（劇烈磨損階段）。這三個階段時間的長短主要取決于所使用的液壓介質的清潔度。影響泵的軟壽命還有另外一個決定性因素，就是泵的軸承的使用壽命。因為軸承在泵殼內軸向載荷轉動，泵殼內的三大摩擦副（1缸體配流面與配流盤；2柱塞桿與缸孔；3滑靴與斜盤）零件高速摩擦轉動，金屬表面相對運動時，金屬與金屬產(chǎn)生接觸摩擦，發(fā)生粘結和切削，而且由于局部高溫，造成大尺寸金屬氧化物顆粒疲勞剝落，剝落的金屬顆粒因無法排出泵殼外而積存在液壓泵殼內。
At this stage, the metal material to achieve the rated life of fatigue cycle, the metal surface will produce fatigue, fatigue layer high temperature and pressure in the pump under the special use, the metal surface prone to granular loss, therefore, rapid wear growth, leading to component failure. Three pairs of friction vice relative motion in the operation of the pump (hydrostatic bearing relationship) between the wear parts, the gap between parts increases, pump leakage increase, and oil temperature also increased. Pump soft life is from the early period to the stable stage and then to fatigue spalling stage (severe wear stage). Cleanliness is the length of the three stages mainly depends on the use of hydraulic medium. The influence of the soft life of the pump there is also a decisive factor, is the pump bearing life. Because the bearing in the pump casing load axial rotation, three friction pump shell (1 cylinder surface and the valve plate; 2 plunger rod and cylinder bore; the 3 sliding shoe and swashplate) high-speed friction parts rotation, moving relative to the metal surface, the metal contact friction, adhesion and cutting, and because the local high temperature, resulting in large size metal oxide particles fatigue spalling, metal particles flaking due to inability to discharge pump shell and accumulated in the hydraulic pump shell.
因泵殼體充滿液壓油，沉積的金屬顆粒與液壓油混雜在一起隨泵主軸及缸體的轉動又在殼體內旋流漂移，造成泵內軸承的加劇磨損。軸承磨損到一定程度后游隙增大，軸承游隙增大后軸承的回轉精度降低后，無法保證缸體與配流盤的相對運動精度，因此又破壞了泵三對摩擦副之間的靜液壓的平衡，被破壞的靜液壓支承（三對摩擦副）又會加速磨損。
Due to the pump casing filled with hydraulic oil, hydraulic oil, deposition of metal particles and mixed in together with the pump shaft and the rotating cylinder and in the casing swirl drift, causing severe wear of pump bearings. Bearing wear to a certain degree clearance increases, bearing clearance increases and then decrease after turning precision bearings, can not guarantee that the relative motion precision cylinder and valve plate, thus destroyed the pump three pairs of friction between the hydrostatic equilibrium, hydrostatic bearing damaged (three pairs of friction vice) will accelerate the wear and tear.
即使所使用的液壓介質達到清潔度標準，軸承還有一個基本的額定使用壽命。軸承的額定壽命分為（1）公稱額定壽命；（2）修正的額定壽命；（3）深入計算的額定壽命。
Even if the use of hydraulic medium to achieve cleanliness standards, there is a basic nominal bearing service life. The rated life of a bearing is divided into (1) nominal rating life; (2) rated life correction; (3) depth calculation of rating life.
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