Kunststoffschweißtechnik
WIDOS
Einsteinstr. 5
Phone ++49 (0)7152 / 9939 - 0
W. Dommer Söhne GmbH D-71254 Ditzingen-Heimerdingen Fax
++49 (0)7152 / 9939 - 40
Webside: www.widos.de
email: [email protected]
14.02.2012
Working instructions WIDOS 2500 - 250 adjustable
Page 13 of 48
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 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 .
The plastic pipes are clamped by means of 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 cleaned and heated heating element is inserted and the pipes are pressed against the
heating element under defined adjusting force. This process is called
"adjusting"
.
The applied force can be read on the scale. After the prescribed bead height being reached,
the force 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 slide is 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 force and then cool down under pressure
(
cooling time
).
The welded pipes can be unclamped, the welding process is finished.
Heating element heats
the pipes up to welding
temperature
Finished welding with
internal and external bead
