With the increasing application of PE pipes, the weldin […]
With the increasing application of PE pipes, the welding technology of PE pipes is attracting more and more attention. Pipe welding has been continuously improved. The important tool for pipe welding-hot melt PE butt welding machine has also experienced from manual to manual welding. Upgrade from semi-automatic to fully automatic.
At present, there are mainly two types of hot-melt welding machines on the market, manual and hydraulic. The biggest drawback of these two hot-melt welding machines is that the welding quality is greatly affected by human factors. The quality of welding depends on the quality and quality of the operators. Experience, so welding cannot fundamentally guarantee welding quality.
The biggest feature of the DHJA automatic hot melt welding machine is to minimize the influence of human factors on welding quality. It uses a computer to automatically and uninterruptedly monitor and control the time, pressure, temperature and other parameters of the entire welding process to ensure In the welding process, each step can be carried out in strict accordance with the requirements of the operating specifications. At the same time, the welding machine can timely detect the change of the ambient temperature and the drag pressure parameter and compensate the welding parameters in time to ensure the welding quality to the greatest extent.
The principle of hot melt butt
The principle of hot-melt butt welding is to press the two ends of the pipe (piece) to be welded against a heating plate with a preset temperature for a period of time. After the pipe reaches a sufficient temperature, take out the heating plate and add a certain amount to both ends. The pressure of the two ends is tightly combined, and the end surface is maintained under a certain pressure until the end surface is cooled to complete the welding process. Since the body is welded and a welding ring is generated during the welding process, it becomes a strengthening ring, and its strength can exceed the body.
Under normal circumstances, a complete welding process is divided into five stages: preheating stage, endothermic stage, conversion stage, welding stage, cooling stage