The influence of the leading speed factor on the quality of PPH pipe fittings: the leading speed directly affects the wall thickness of the product. The leading speed should be matched with the extrusion speed, usually the leading speed is 1%~10% higher than the extrusion speed of the pipe fittings; the effect of compressed air on the quality of the pipe fittings: the compressed air makes the pipe shape and maintains a certain roundness. The pressure is generally 0.02~0.05mpa; the influence of lead cooling on the quality of the pipe fittings: if the cooling is not reached, the extruded material will stick and cannot be shaped. It is best to use air cooling combined with water cooling, and the cooling water temperature should be maintained at about 15°. The new process of pipe lofting has changed the backward appearance of the return process. In a nutshell, "pipe lofting" is on the sample table, according to a certain ratio (usually 1:10 or 1:5), with pipes on the sample table The horizontal projection on the ship is marked with certain symbols to indicate the spatial shape of the pipes arranged on the ship. Lofting not only requires the determination of the position of each pipe on the ship, the spatial bending shape and the PPH pipe joints such as flanges, threaded joints, compartments The number of joints, etc., is also required to calculate the parameters of each pipe during the pipe bending process.
