液压缸缸筒内壁严重划伤后给液压式升降机带来了很大影响，缸筒内壁划出的沟槽会使液压缸有杆腔和无杆腔的油液互相流窜，划伤原因大致可归结为长期使用维护不及时，滤油器滤芯损坏或过滤效果下降，从而导致液压油里的铁屑或者其他材质颗粒物无法及时消除，这些较硬颗粒物的存在是导致液压缸划伤的主要原因。
Lift manufacturers analyze the inner wall of the cylinder after the cylinder to hydraulic lifts severely scratched a big impact on the inner wall of the cylinder groove will draw rod hydraulic cylinder rod chamber cavity and the oil flows from each other, scratches the reason can be broadly attributed to long-term maintenance is not timely, the oil filter cartridge is damaged or filter effect is reduced, causing the hydraulic oil in the iron particles or other materials can not be promptly eliminated, the presence of these particles are harder lead cylinder scratch the main reason.
   
如果长时间停机，前述金属颗粒物堆积在液压缸的无杆腔，分布在活塞头与刚筒内壁接触的位置，由于使用频繁年限较长，液压缸活塞杆与缸筒之间的同轴度有一定偏差，当再次启动上下运行时，活塞杆会产

生轻微摆动，液压缸活塞与缸筒你内壁之间产生缝隙。当液压缸活塞杆回程时，就会拖动卡在缝隙里的金属颗粒运动，金属颗粒与缸筒内壁之间的摩擦产生瞬间高温，就会烧结到一起成为一个整体。在液压缸长时间运动过程中，这种烧结点就会长期刮擦光滑的缸筒内表面，产生了深浅不一面积不等的划伤区域。
Lift manufacturers reminder if prolonged shutdown of the metal particles accumulate in the hydraulic cylinder rod chamber, located at the head position of the piston in contact with the inner wall of the barrel just because of the

frequent use of the same service life is longer, the hydraulic cylinder piston and cylinder between there is a certain degree axis deviation, when started running up and down again, the piston rod will produce a slight swing, hydraulic cylinder piston and cylinder you generate a gap between the inner wall. When the hydraulic cylinder piston rod return, it will drag the card in the slot in the metal particle motion, friction metal particles and between the inner wall of the cylinder to produce instant high temperature, it will sinter together into a whole. Prolonged exercise in the cylinder during this firing point will long scratch the cylinder surface smooth, resulting in shades ranging from area scratched area.