widos 4900 - Page 29

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
PE 80
The value for heating element temperature is between 200° C - 220° C.
The
smaller
the pipe wall the
higher
the temperature.
PE 100
The standard value for heating element temperature is 220° C.
Increase the change-over time and the welding pressure time at PE 100 as fast as possible !
time to
change- reach full
over welding cool-down time
0,15 (PE) 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]

in welding area
Table for PE
bead-up heat-up
Additional to the given bead-up force and to the welding force the moving force of the support must be added !
welding area
P (N/mm²)
315
7,7 41,0 19 1,5 77 6 6 19 11
315
9,7 33,0 24 1,5 97 7 7 24 13
315
12,1 26,0 30 2,0 121 8 8 30 16
315
15,0 21,0 36 2,0 150 9 9 36 19
315
17,9 17,6 43 2,0 179 10 11 43 23
315
18,7 17,0 45 2,0 187 10 11 45 24
315
23,2 13,6 55 2,5 232 11 13 55 29
315
28,6 11,0 66 3,0 286 13 15 66 35
315
35,2 9,0 79 3,0 352 15 18 79 43
315
43,1 7,4 94 3,5 431 18 22 94 52



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 25 / 5 of 46