ELEMENTO FILIFORME DESTINADO ESPECIALMENTE A UMA PECA DE INSERCAO DE ELECTRO-SOLDADURA E PROCESSO DE TRATAMENTO POR ELECTRO-SOLDADURA UTILIZANDO O MESMO

摘要

The invention relates to a filamentary element constituted by at least one resistance wire clad with a thermoplastic material. …It is distinguished by the fact that the cladding (2) has mechanical fixing portions (3a, 3b), one of which is intended to engage with the other fixing portion of an adjacent identical filamentary element to be assembled. …This filamentary element is particularly intended for producing electrofusion inserts. In the case of electrofusion inserts intended for a fusion sleeve for assembling tubular parts made of thermoplastic, it is preferably assembled as a helical winding. …In the case of electrofusion inserts intended for branch-off coupling with perforation of one tubular part made of plastic, it may be assembled as a spiral. ……