Quality inspection of metal joints

Metal joints quality inspection: Connector core tube, jacket and the connection quality of the sealing portion, the joint must be rigorous testing prior to assembly. Test items, except the size, tolerances and machining accuracy shall conform to the provisions of joint drawings must also be careful to check the connectors and the hose interchangeability and whether to match. Including the threaded portion of the outer connecting application specific standard ring gauge, plug gauge tests have been passed, in order to ensure that the user's normal connection. Should also focus on checking the core tube surface finish, sharp edges smooth angular extent. If found  Hydraulic pipe fittings  metal parts have sharp corners or burrs must be carefully trimmed to use, otherwise it will seriously affect the hose assembly performance and life;Fitting metal parts used in the machining of steel itself has potential pitfalls (such as severe corrosion, internal cracks, etc.), the naked eye and difficult to find in the joint assembly and crimping process or during the hydraulic pressure test will occur in the radial or axial fracture gap. When the problem occurs, the connector on the same batch of metal parts should be a rigorous test piece by piece, while the hydraulic hose assembly inspection sampling proportion should be increased, so as to avoid the quality problems with the hose assembly to users be used.
In addition to the hose joints connecting portion size and smooth sealing surface should be particularly careful precision inspection, assembly, be careful not to damage the product is shipped with a plastic bag or plugs should pay attention to the protection, so as not to affect the quality of the installation. The joint surface of the outer metal mass in the hose assembly must be checked prior to assembly, coating removing undesirable coupling parts.