Hydraulic pipes are commonly used in industrial production. However, in hydraulic systems, both metal pipe joints and hose joints are prone to leakage. As a professional hydraulic equipment manufacturer, I will explain how to deal with the leakage of hydraulic pipe joints.
For the ferrule type pipe joint, most of the pipe is subjected to a large external force or impact force, causing the ferrule to loosen or the pipe end face to be deformed to cause leakage. At this time, it should be checked whether the ferrule is out of round, the cutting edge is defective, and the pipe end is Integrity and the degree of compression of the ferrule nut, etc., while eliminating the external force of the pipe.
For the flared pipe joints, most of them are caused by excessive flare, quality is not required or disassembled many times, causing leakage due to flaring deformation or cracking. At this time, the front end can be cut off and re-expanded. If the male and female cones are used for sealing, the leakage is mostly due to the damage of the two tapered surfaces, and the tapered surface can be ground with abrasive sand.
In some cases where the “о” ring is sealed by the end face or the outer diameter, the leakage causes the following: “о” ring is aged or deformed to cause leakage; the “о” ring is not assembled, so that the two planes are connected. The pressure is not flat or the “о” ring is cut to cause leakage; the “о” ring is not compacted, and the amount of elastic deformation is insufficient to cause leakage; the “о” ring is too deep to cause leakage. In this regard, it is necessary to re-select the “о” ring with the same outer diameter and thick section, or cut or grind the sealing plane with the groove to reduce the depth of the groove, so that “о” The ring has sufficient elastic deformation (the compression should generally be between 0.35 and 0.65 mm).
For the leakage of pipe joints with oil-resistant rubber sheets, wool felts, mild steel cardboard, combined sealing gaskets or sealants, no matter what material, first check the seals for damage, deformation, aging and roughness. And then take the appropriate measures.