widos 4900 - Page 33

Ku nst sto ffschwei ß tec hni k
Foundation: 2207, 2208 DIN 16932 German association for welding
Use for:
4900
1 bar on manometer:
59
N
time to
change- reach full
over welding cool-down time
0,10 (PP) time pressure pressure in
T desired
temperature
time
pipe
pipe
SDR
bead-up
circular
heat-up
max.
time
welding
cool-
diameter
wall
pressure
bead
time
change-
to reach
pressure
down
OD
(s)
[bar]
min.
[s]
over
welding
[bar]
time
[mm]
[mm]
[mm]
time
pressure
[min]
[s] [s]

Table for PP
Additional to the given bead-up force and to the welding force the moving force of the support must be added !
The standard value for heating element temperature is 210° C +/- 10° C.
welding area
in welding area
The
smaller
the pipe wall the
higher
the temperature.
P (N/mm²)
bead-up heat-up
280
6,9 41 11 0,5 173 6 7 11 12
280
8,6 33 13 1,0 197 6 8 13 15
280
10,7 26 16 1,0 227 7 10 16 18
280
15,9 17,6 23 1,0 292 8 14 23 26
280
25,4 11 35 1,5 394 11 22 35 39
280
38,3 7,4 50 2,5 493 14 33 50 57
315
7,7 41 13 1,0 185 6 8 13 13
315
9,7 33 16 1,0 213 7 9 16 16
315
12,1 26 20 1,0 246 7 11 20 20
315
17,9 17,6 29 1,0 317 9 16 29 28
315
28,6 11 44 2,0 420 12 24 44 44



Remaining under the cool-down time for up to 50% is allowed under the following conditions:
•
prefabrication under workshop conditions
•
low additional pressure at unclamping
•
no additional pressure during further cooling down
•
load onto the workpieces only after being completely cooled down
02.11.2011 Working instructions WIDOS 4900 Page 26 / 4 von 46