A Method for Determining the Best Welding Time of PE Electrofusion Pipe Fittings

Abstract

The invention relates to a method for determining the optimal welding time of a PE electric melt pipe fitting. The method includes: S1. selecting electric melt pipe fitting samples and heating wires; S2. conducting test welding on one sample, and recording the change characteristics of an output current value; S3. when the sample welding time is equal to the welding time T0 corresponding to the time that the output current value reaches a stationary current value I0, stop welding; S4. performing a sample cutting peeling test, if the sample welding is qualified, taking T0 as the optimal welding time of the sample; if the sample has charring or overdone brittleness phenomenon, taking T1 as the optimal welding time; and if the sample has less melt or non-melt brittleness phenomenon, taking T2 as the optimal welding time; S5. repeating S1 to S4, and performing welding test on the next sample till finishing welding of the selected samples; and S6. calculating the optimal welding time of the electric melt pipe fitting according to the optimal welding time of each sample. The method provided in the invention can determine the optimal welding time of the electric melt pipe fitting by a most raw material saving way.

Description

Technical field [0001] The present invention relates to the field of welding of electric fusion pipe fittings, and more specifically, to a method for determining the optimal welding time of PE electric fusion pipe fittings. Background technique [0002] As the PE electric fusion connection technology is getting more and more attention from the municipal pipeline industry, the current commonly used electric fusion welding method is constant electric fusion welding. However, due to the complex theory of plastic electric fusion welding, there is no mature algorithm at home and abroad. Quickly work out the welding process parameters of electrofusion pipe fittings, including the best welding time. Therefore, the manufacturer can only rely on its technicians to test the best welding parameters through a large number of destruction tests, which will not only cause waste of materials, but also It also directly adds huge development costs to the enterprise. Summary of the invention [000...

AI Technical Summary

Problems solved by technology

[0002] As the PE electrofusion connection technology has been paid more and more attention by the municipal pipeline industry, the current commonly used electrofusion welding method is constant voltage electrofusion welding. However, due to the complexity of the plastic electrofusion welding theory, there is no mature algorithm at home and abroad. Quickly formulate the welding process parameters of electric fusion pipe fittings, including the best welding time, so the production enterprise can only rely on its technicians to test the best welding parameters through a large number of destructive tests, which will not only cause waste of materials, Moreover, it directly adds huge development costs to the enterprise

Images