Tecnodue I.T.S. PT 355, Operating Manual

Page: 16 / 36

I.T.S. Ital Trade Services PT 355 Operating Manual
16
5.1
Welding Parameters for PE & PP sheets,pipes & fittings according to DVS 2207-1 – 2207-11
Nominal Wall thickness
mm Alignment
Bead height on heater
plate at the end of the
alignment time (alignment
under 0.15 N/mm 2 )
mm (minimum values)
Heating-up
Heating-up time= 10 x
wallthickness (heating-
up 0.02 N/mm
2
)
s
Changeover time
S (maximum time) Joining pressure
s Cooling time under
joining pressure p=0.15
N/mm2 0.01
Min (minimum values)
MATERIAL PE
Until 4.5 0.5 45 5 5 6
4.5 … 7 1.0 45 … 70 5 … 6 5 … 6 6 … 10
7 … 12 1.5 70 … 120 6 … 8 6 … 8 10 … 16
12 … 19 2.0 120 … 190 8 … 10 8 … 11 16 … 24
19 … 26 2.5 190 … 260 10 … 12 11 … 14 24 … 32
26 … 37 3.0 260 … 370 12 ... 16 14 … 19 32 … 45
37 … 50 3.5 370 … 500 16 … 20 19 … 25 45 … 60
50 ... 70 4.0 500 … 700 20 … 25 25 … 35 60 … 80
MATERIAL PP
Until 4.5 0.5 135 5 6 6
4.5 … 7 0.5 135 … 175 5 … 6 6 … 7 6 … 12
7 … 12 1.0 175 … 245 6 … 7 6 … 11 12 … 20
12 … 19 1.0 245 … 330 7 … 9 11 … 17 20 … 30
19 … 26 1.5 330 … 400 9 … 11 17 … 22 30 … 40
26 … 37 2.0 400 … 485 11 ... 14 22 … 32 40 … 55
37 … 50 2.5 485 … 560 14 … 17 32 … 43 55 … 70
Example on how to calculate the cooling down (t5) time following the DVS NORM
As per drawing above the time
T corresponds to wall thickness value X in
mm . To calculate this time (t5 in minutes) please follow the formula below:
Example:
If you want to calculate the cooling down time for a 6mm wall thickness pipe, you must simply substitute the variable X with the value 6 :
min , ) , (
,
T 4 8 5 4 6
5 4 7
6 10
6
= − ⋅
−
−
+ =
To calculate the other times ( t3 and t4 ) you must use the same principle of linear interpolation.
To obtain the
t2 (in seconds) value use the formula below where the variable wt corresponds to the nominal wall thickness
) mm ( wt (sec) T
⋅ =
10
2
) 5 , 4 (
5 , 4 7
6 10
6
− ⋅
−
−
+ =
x T