August 14, 2023
In order to ensure the quality of the steel mesh skeleton composite pipe in the process of installation or use management, it must be inspected for bending fatigue. If the results of our inspection work are inaccurate, it is easy to cause various information quality control problems in the use of enterprises and in the later development. . The steel wire mesh pipe has the hardness, rigidity, and impact resistance that exceed ordinary pure plastic pipes, and is similar to the low linear expansion coefficient and creep resistance of steel pipes. The PE steel mesh skeleton pipe composite pipe also has plastic components, and has the same water supply function as most plastic pipes. PE steel mesh skeleton polyethylene composite pipe is made of high-density plastic steel mesh skeleton and thermoplastic polyethylene as raw materials, steel wire winding mesh as the skeleton reinforcement of polyethylene plastic pipe, high density polyethylene (HDPE) as the The matrix uses high-performance HDPE modified bonding resin to tightly connect the steel wire skeleton with the inner and outer layers of high-density polyethylene, so that it has an excellent composite effect. Therefore, the following editor will explain to you how to check and test the bending fatigue of this product.
1. The bending fatigue test of steel mesh skeleton composite pipe is to fix one end on the motor flange or shaft, and connect the other end to the looper flange or movable shaft head. It keeps turning with a small bend radius. The entire flexible part of the product and the mesh are subjected to alternating loads. This test method is more stringent, because any part of the radial direction of the composite pipe cannot avoid the influence of large tensile stress and compressive stress. This kind of test is usually rotated at a linear velocity of v ≤ 6 m/min when there is no load in the cabin.
2. Under the premise of maintaining the working pressure, one end of the product is fixed, and the other end is bent repeatedly according to the small bending radius under the action of the crank, connecting rod and slider. The frequency of steel mesh skeleton composite pipes with a diameter less than 100mm is 2 cycles/minute.
The above problems are the two inspection methods for the bending fatigue of the steel mesh skeleton composite pipe. When analyzing and inspecting them, a more suitable inspection and research method can be selected according to the company's own development demand information and the environmental conditions of the construction site. Of course, in addition to ensuring the quality of the pipe, it is also a good way to maintain the pipe in the later stage to make the pipe stable and play an important role.
