widos 4600 - 3 Functional Description

WIDOS Einsteinstr. 5 Phone +49 7152 9939 0
Wilhelm Dommer Söhne D-71254 Ditzingen Fax +49 7152 9939 40
GmbH E-mail: info@widos.de Webside: www.widos.de
30.08.19 Working Instructions WIDOS 4600 Page 15 of 32
3. Functional Description
Basically, the international and national process guidelines are to be
followed.
The plastic pipes are clamped by means of the clamping devices.
Then the front sides of the pipes are cut plane and parallel by means of the planer and the
misalignment of the pipes is checked.
The heating element is inserted and the pipes are pressed against the heating element under defined
adjusting pressure. This process is called "adjusting".
After the prescribed bead height being reached, pressure is reduced, the heating time begins. The
function of this time is to heat up the pipe ends.
After expiration of the heating time, the slides are opened, the heating element is removed quickly and
the pipes are driven together again. The time gap from the removal of the heating element to joining
the pipes is called change over time.
The pipes are joined under prescribed welding pressure and then cool down under pressure (cooling
time).
The welded joint can be unclamped, the welding process is finished.
Heating element heats the pipes up
t
o welding temperature
Finished welding with internal
and ex
t
ernal bead