The following is the performance and cause analysis of PVC pipe production quality problems. The compression resistance and service life of PVC pipes cannot meet the requirements: the quality of PVC pipes is usually inspected by hydraulic test, and the compression resistance and service life of PVC pipes are tested by this method to ensure that the pipes used meet the relevant standards. , and no bursting phenomenon will occur in practical applications. According to the survey, some PVC pipes on the market burst during the hydraulic test. If these pipes are put into production and life, it will bring great safety hazards. In addition to the use of a large number of fillers in production, the cause of this quality problem also has problems in the production process. In the actual production process of PVC pipes, the screw of the extruder is designed according to the requirements of standard production. However, a large number of fillers are used in actual production, which makes the production process formula change. When extruding, it is difficult to produce pipes of satisfactory quality under the existing conditions. Polyvinyl chloride is very sensitive to temperature and pressure, and its viscosity is high, and the increase of fillers in the raw material makes the melt unable to flow stably during extrusion. Therefore, it is necessary to effectively adjust the processing and production technology, but the adjustment of processing and production technology will inevitably lead to a series of changes in other aspects, and the testing method will also undergo great changes. Only in this way can the produced The quality of PVC pipes.
