widos 5000 WM, Руководство по эксплуатации

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WIDOS Einsteinstr. 5 Phone +49 (0) 71 52 99 39 0
Wilhelm Dommer Söhne D-71254 Ditzingen-Heimerdingen Fax +49 (0) 71 52 99 39 40
GmbH Website: www.widos.de Email: info@widos.de
23.06.2015 Working instructions WIDOS 5000 WM Page 16 of 80
3. Functional description
B a s i c a l l y t h e i n t e r n a t i o n a l a n d n a t i o n a l p r o c e s s g u i d e l i n e s a r e t o b e
f o l l o w e d !
First the clamping tools are fixed onto the machine.
For welding angles and bows the clamping tools might be turned on both sides. The plastic pipes are
clamped by means of the clamping tools.
After this the front sides of the pipes are planed parallel and the misalignment of the pipes is checked.
Then the heating element is driven inside and the pipes are pressed onto the heating element under the
defined pressure (this process is called: „adjustment time“).
After reaching the prescribed bead height the pressure is being reduced and this is the start of the heating
time.
The function of this time is to bring the pipe ends onto the welding temperature.
After completion of the heating time the machine is opened the heating element quickly driven out and the
pipes are again driven together hydraulically.
The time gap from driving out the heating element to the joining of the pipes is called change over time.
They are put together with the prescribed welding pressure and then cool down under pressure (cooling
time).
The welding connection can now be unclamped: the welding process is completed.
Welded pipe with inside
and outside bead.
Heating element heats the pipes
up to welding temperature.