Ku nst sto ffschweißtec hni k
Welding process
Chapter 6
25.11.11
Working Instructions WIDOS 7000 WM
page 48 of 98
Check mismatch of the pipe ends. If mismatch is ok, open pipes,
<joystick 13> on
and confirm it by <Enter>.
The mismatch may not exceed 10 % of the wall thickness; the allowed
crack may not be larger than 0.5 mm.
In case the mismatch is too large, align the pipes horizontally at the right
table with the ratchet tightener, resp. readjust the pipe ends within the
clamping tools.
Thereafter repeat planing.
6.2.5.
Bead up
Move the heating element being clean and heated up to nominal
temperature into machine with <joystick 5> on
.
Close pipes, <joystick 13> on
.
Display:
2nd line:
bead up
Ps=15 Pi=3
Display of:
desired and actual pressure
alternating with:
Display:
2nd line:
bead up
T=210°C Pi=3
Display of:
heating element temperature and actual pressure
Slowly raise pressure with <pressure controller 12> up to actual
pressure = nominal pressure (when reaching the nominal pressure
there will be a short beeping sound).
Maintain pressure until the pipe completely butts against the heating
element and a bead has built according to DVS.
The heating element temperature is heated up to more than
200°C
!
Do not touch the surfaces of the heating element.
Take enough safety distance to inflammable materials.
Do wear safety gloves.
The travelling area of the heating element must be clear!
6.2.6.
Heating up
Reduce pressure, press <button 17,
> the SPA control switches to
heating.
Display:
2nd line:
heat up
t=54s
Pi=0
Display of:
Remaining time for heating and actual pressure
alternating with:
