The production cost of aluminum plate is relatively low. The pipes that can be put into use are polyethylene plastic pipes used for family life. The long-term use of this pipe will bring harm to the body. If aluminum plate is used, it is not the inner wall of the pipe. The production scale will bring people's health and life security. The lining of composite aluminum plate - low carbon steel aluminum plate of aluminum plate manufacturer is 6082 aluminum plate. It's mild steel. In the welding process, compared with steel pipe, aluminum is made into aluminum plate.
The sealing of composite pipe base and composite pipe liner belongs to the welding of different metals; the back welding of aluminum plate pipe and composite pipe liner belongs to the welding of the same metal; the filling welding of aluminum plate pipe and composite pipe base is a welding of different metals.
It can be seen that the selection of various welding materials and welding processes is determined by the liner, base material and aluminum plate material of the composite pipe. 2.1 conventional argon arc welding method is adopted for welding method and groove design, TIG welding is adopted for inner lining and transition layer, and electrode arc welding is adopted for base material, so as to ensure the convenience and universality of construction.
Since there is no fusion welding between the base and the lining plate, it must be sealed before assembly. The pad thickness is only 2.0mm, so choose Φ thin line 1.2mm. The sealing channel is the connection of aluminum plate and carbon steel, so er309 welding wire should be selected. This welding wire is mainly used for the welding of dissimilar steel, especially for the welding of carbon steel and aluminum plate. Select the root wire. Different from the sealing layer, er2520h0 is used for root welding.
At present, many countries have established professional large-scale production lines. At present, China's output is still relatively low, the production process is not stable, and heat treatment, acid and alkali fire, cold-rolled tube blank and so on. After hot rolling, the billets meet the supply standard of the western region. Austenitic aluminum plate is made of the same material as pure aluminum plate and tube. The composite pipe base of aluminum plate manufacturer is 6082. Welding of aluminum plate - the welding of carbon steel composite pipe and aluminum plate pipe can be regarded as the combination of two welding processes: the welding of aluminum plate and aluminum plate; the welding of aluminum plate and carbon steel.