进口工程机械在使用中因各种意外事故或疲劳损坏,其液压缸的缸筒会出现裂纹,尤以挖掘机、装载机上这种故障出现的次数最多。 进口工程机械的大直径高压液压缸价格昂贵,其缸筒结构大多采用筒头、筒身、筒尾三件组焊而成,筒身为合金钢筒,所有的裂纹均出现在筒身与筒头、筒尾的焊接接缝处。工程机械在工地现场若其液压缸缸筒出现裂纹时,不论是等待采购进口件更换还是将损坏的缸筒送国内有关厂家更换筒身,均需1～2个月时间。如果出故障的机械是工地上的主力设备,则会导致工程施 Imported construction machinery in use due to various accidents or fatigue damage, the hydraulic cylinder cylinder will crack, especially in excavators, loaders this failure occurs the most. Imports of construction machinery large diameter high-pressure hydraulic cylinder expensive, most of its cylinder structure using the cylinder head, cylinder body, tube end of the three-piece welded together, the body of the alloy steel cylinder, all the cracks appear in the cylinder and the cylinder head , The end of the weld seam. Construction machinery in the field if the hydraulic cylinder cylinder cracks, whether it is waiting for the purchase of imported parts to replace or damaged cylinder sent to the domestic manufacturers to replace the barrel, are required 1 to 2 months time. If the failure of the machinery is the main equipment on the site, it will lead to engineering facilities