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2019 №05 (04) DOI of Article
2019 №05 (01)

Automatic Welding 2019 #05
Avtomaticheskaya Svarka (Automatic Welding), # 5, 2019, pp.46-53

Features of technology and modern trends in the field of butt welding of polyethylene pipes (Review)

M.V. Yurzhenko
E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazimir Malevich Str., 03150 Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Pipelines for the transportation of natural gas, cold water supply and drainage are one of the most significant elements of urban and rural infrastructure. Pipelines from polymeric materials, in particular polyethylene, are a modern alternative to steel pipelines, which during 15-20 years of operation are destroyed under the influence of chemical and electrochemical corrosion. In the world and in Ukraine, almost all new split pipelines for gas supply, cold water supply and drainage are built from polyethylene pipes. In Ukraine, especially in large cities, a practice of replacing old worn steel pipelines with new polyethylene and renovating using the method of tightening a polyethylene pipe into the steel pipeline has become widespread. One of the most technological methods of butt joining of polyethylene pipes of almost the whole range of outer diameters is welding with a heated tool. Equipment for this welding method is currently not manufactured in Ukraine. The imported installations for butt welding of polyethylene pipes operate according to a  conventional technological scheme, developed a long time ago, some elements of which, due to the improvement of the polymeric materials itself, can be revised and simplified preserving the high quality of final welded joints. The aim of the work is to review the state of the art in the field of butt welding of plastic products, first of all, polyethylene pipes with the heated tool and its modifications, which are the most interesting from the technological point of view. 28 Ref., 5 Fig.
Keywords: butt welding with a heated tool, plastics, polyethylene pipes.

Received: 17.04.2019
Published: 04.04.2019


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