Electrofusion bending pipe fittings and its post-firing process

Abstract

The invention discloses an electric melting bent pipe fitting. The electric melting bent pipe fitting comprises a bent pipe fitting body and further comprises a first electric heating wire ring and asecond electric heating wire ring which are embedded in inner pipe walls of the two ends of the bent pipe fitting body; the first electric heating wire ring and the second electric heating wire ring are mutually connected through a bridging electric heating wire; and the first electric heating wire ring, the second electric heating wire ring and the bridging electric heating wire are continuouslyarranged through an electric heating wire. Compared with the problem that two sections of electric heating wire rings in an existing bent pipe fitting are in twist joint and consequently are prone tobeing fused, the electric heating wire in the bent pipe fitting is continuously laid overall, and after powering-on, the fusing probability of the electric heating wire is greatly lowered.

Description

technical field [0001] The invention relates to the field of plastic pipe fittings, in particular to an electric melting bending pipe fitting and its post-firing process. Background technique [0002] PE electric fusion pipe fittings are divided into exposed wire electric fusion pipe fittings, plastic-coated wire electric fusion pipe fittings and rear cloth wire electric fusion pipe fittings. The three processes have their own advantages. The electric fusion interface of the exposed wire electric fusion pipe fittings under the same conditions, its The peel strength and welding operation error tolerance are slightly better than the electric fusion pipe fittings produced by other processes, and the connection of the plastic-coated wire electric fusion pipe fittings on the steel mesh skeleton PE pipe has unique advantages. Wire electrofusion pipe fittings, which are made of injection molded pipe blanks after turning and embedding wires, so the dimensional accuracy cannot be ach...

AI Technical Summary

Problems solved by technology

[0004] However, with the above method, when the bending pipe fittings are energized to make the electric heating wires heat and electrofusion weld, it is easy to fuse the twisted electric heating wires together. During use, there is often a problem that the welding between the pipe fittings cannot be realized due to the electric heating wires being blown.

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