Quality control and inspection in the process of withholding
Crimping is a key process in the manufacturing process of rubber hose assembly. It is very important to strengthen the quality control and quality inspection in the process of clamping to ensure the quality of the hose assembly.
(1) Correct selection of clamping mold. When choosing the mold, it should not only be satisfied to reach the required diameter of withholding, but also take into account the size of the gap between the mold after withholding.
(2) Determination of compression size. According to the structure, performance and joint structure of the rubber hose to determine the compression rate, should be verified by the test, especially the first part of the test. According to the measured wall thickness of the rubber tube, the diameter of the jacket after compression is calculated according to the selected compression rate, and then the hydraulic test, the joint pulling test, to check the sealing performance of the rubber tube and the joint pulling strength.
(3) Strictly control the appearance quality of clamping. Pay attention to coordination and coordination, control the joint clamping positioning size, prevent the joint from being crushed and inaccurate clamping position. Try to avoid repeated withholding.
Pipe joints are generally divided into: flared pipe joints, welded pipe joints, ferrule type pipe joints, buckled pipe joints, detachable pipe joints, telescopic pipe joints and quick pipe joints.
for the delivery of saturated steam or superheated water of 165 ° C ~ 220 ° C, suitable for steam cleaners, steam hammers, flat vulcanizing machines and injection molding machines and other hot pressing equipment for soft pipelines.
Due to the complex variety and various structures of hydraulic hoses, and the different conditions of use, the service life of hydraulic hoses is not only determined by the quality, but also determined to be properly used.