Steel strip tube manufacturer hot melt extrusion welding structure: hot melt extrusion welding is a special hot air extrusion welding tool. First, heat the tube at both ends of the joint and use a welding torch to melt the polyethylene material at both ends of the joint. The product produced by the steel strip pipe manufacturer is a connection method with integrated polyethylene material, which belongs to rigid connection. Extrusion welding uses the basic principle of molecular thermal motion to heat a polyethylene electrode (which changes the electrode from a solid to a viscous fluid) and extrude it with a squeeze gun. At the same time, a heat gun is installed on the welding torch, and the surface of the PE tube to be welded is heated.

The products produced by the steel strip pipe manufacturer are > PE

The welding surface of the steel strip pipe manufacturer should be controlled in the middle of the pipe groove, and the two pipes to be welded should be adjusted to the same axis (the disconnected part of the pipe should be aligned as much as possible); A gap of 1-3mm should be left at the joint to facilitate welding (but the maximum gap is generally not more than 5mm). If you can't meet the requirements, you need to use a tool to repair the interface.

Repair of products produced by steel strip tube manufacturers can be carried out from outside or inside the pipe (more than 800). root canal). The welding area must be clean and dry. There must be no dirt and other impurities; The inner and outer surfaces of the welding area should be polished to remove the oxidized surface. Welding rods are supplied by pipe manufacturers. Electrodes that are the same as the polyethylene material used in the production of pipes or that mix well with pipes.

The cross-section of the products produced by the steel strip pipe manufacturer should be round, the thickness should be uniform, and meet the welding performance requirements of the selected welding gun. The electrodes must also be clean, dry and free of any stains. It must be emphasized that a good hot air loading extrusion welder should be used. When welding, the polyethylene at the end of the welded pipe joint must be preheated after hot air loading to melt the extruded polyethylene into the tube.

All welding parts of the products produced by steel strip pipe manufacturers must be full, and no welding or fracture shall be missed. Pipes with a diameter greater than 800mm should generally be welded inside and outside, and the temperature of the molten material and hot air should be set according to the environmental conditions, and a certain welding pressure should be maintained for the molten material, and there should be a corresponding slow cooling time. In summary, all welding procedures and operational requirements should be in line with the welding procedures and operational requirements provided by the pipe manufacturer.

The connection of products produced by steel strip pipe manufacturers is generally used for steel pipe diameter less than 1200mmSteel tape reinforced polyethylene spiral pipe (at present, only fiber reinforced polyethylene heat shrinkable tape can be wound along the joint in two layers, when the pipe diameter is greater than 1200mm<span style="font-family:Songti"> can be added outside). The connection must be made according to the process requirements of the heat shrinkable tubing (belt). First of all, the outer wall of the pipe at the joint is polished.