Ku nst sto ffschweißtec hni k
WIDOS
Einsteinstr. 5
Phone ++49 7152 9939 - 0
W. Dommer Söhne GmbH D-71254 Ditzingen-Heimerdingen Fax
++49 7152 9939 - 40
website: www.widos.de
email: [email protected]
30.07.12
Working Instructions WIDOS 10000 mobile
Page 15 of 52
3. Functional description
B a s i c a l l y, t h e i n t e rn a t i on a l a n d n a t i on a l proc e s s gu i de l i n e s a re t o
be f ol l ow e d!
The plastic pipes are clamped in 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 cleaned and heated 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 carriages 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 to welding
temperature
Finished welding with
internal and external
bead
