The difficulty of FRPP tube aging depends on the strength of its chemical bonds, and different bonds have different bond energies, and they vary greatly. The presence of branching and side groups in the polymer molecules of FRPP tubes reduces the strength of the bonds, which makes it difficult for plastics to age. Photoaging of plastics refers to the phenomenon that the function of plastics changes over time when they are exposed outdoors.
Because the rotor rolls over the surface of the tube at high speed, if there are other subtle obstructions, it will cause oscillation and wrinkle the surface of the pipe fitting. At the beginning of the spinning of the FRPP pipe, the operation needs to be extremely careful, and the deformation zone should be gradually deformed. For blanks with a thickness of about 1mm, it is more advantageous to choose manually operated rotary wheels, and blanks with larger thicknesses are suitable for forming on hydraulic transmission spinning machines.
If the degree of deformation is not large when the rotary wheel is reduced, it can be formed in one process. When the degree of deformation is too large, the tendency of wrinkling is increased, and the work hardening of the FRPP pipe is severe, resulting in a sharp increase in deformation resistance, and it takes several processes to shrink and form. It is assembled in the die area, extruded from the forming section of the machine head, and then cooled and shaped to obtain the processing method of the required composite profile.
In the process of elastoplastic bending, the elongation deformation of the outer material under the action of tangential tensile stress, and the deformation and tearing of the outer side of the elbow when the elongation deformation of the outer side of the elbow is a certain value. In the process of application, due to easy corrosion, strong hardness does not mean good elasticity, good raw materials will not emit black smoke and no smell after incineration, and the liquid melted after incineration is still very clean.