METHOD AND APPARATUS FOR CHAMFERING AN END OF A PIPE MADE FROM THERMOPLASTIC MATERIAL Russian patent published in 2016 - IPC B29C57/00 

FIELD: pipes.

SUBSTANCE: group of inventions relates to a method for chamfering the end of a pipe (2). Pipe is made from thermoplastic material. Method comprising the following steps: localised and circumferential heating of an axial portion (3) of the pipe (2) at a predetermined temperature; plastic deformation of the heated axial portion (3) using a tool (4) for forming a chamfer on the axial portion (3). Predetermined operating temperature higher than that of vitreous transition of the material of the pipe and has a value close to and below the melting temperature of the pipe material. Device comprises a heater, tool for treatment of part of the pipe with option of flattening (radially) the end of the pipe.

EFFECT: technical result provided by the method and device according to inventions, consists in possibility of chamfering at the ends of pipes, made from thermoplastic materials and having preset thickness and size to obtain a product of high quality.

22 cl, 14 dwg