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1. (WO2014199006) A METHOD OF MANUFACTURING AN ELBOW CHANNEL AND AN ELBOW CHANNEL

Pub. No.:    WO/2014/199006    International Application No.:    PCT/FI2014/050422
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Thu May 29 01:59:59 CEST 2014
IPC: B29C 53/56
B29C 65/00
B29C 70/32
B29D 23/00
C22B 3/02
B01D 11/04
Applicants: OUTOTEC (FINLAND) OY
Inventors: VAARNO, Jussi
SAARIO, Rami
FREDRIKSSON, Henri
Title: A METHOD OF MANUFACTURING AN ELBOW CHANNEL AND AN ELBOW CHANNEL
Abstract:
A method of manufacturing an elbow channel (1) with an elbow angle (a). The method comprises manufacturing an elongated filament-reinforced plastic composite hollow body (2) by a filament winding technology; miter-cutting the elongated hollow body (2) at a cut angle (a/2), which is half of the desired elbow angle (a), to form a first body piece (3) having an oblique first end (4), and a second body piece (5) having an oblique second end (6); placing the first body piece (3) and the second body piece (5) in relation to each other to abut the first end (4) and the second end (6) against each other, so that the longitudinal symmetry axes (x) of the first and second body pieces are at said elbow angle (a) to each other; and attaching the first end (4) and the second end (6) to each other to form said elbow channel. The elbow channel (1) is formed from first and second hollow body pieces (3, 5) which are miter cut at a cut angle (a/2) from an elongated filament-wound filament-reinforced plastic composite hollow body (2), the hollow body pieces (3, 5) being connected to each other at their miter cut first and second oblique ends (4, 6) to form the elbow channel.