Demtech Pro-Wedge VM-20 - Appendix A, Pro-Wedge Welding Speed; Temperature Chart

Rev. F, December 2020
Page 21 Pro-Wedge VM-20 Operator’s Manual
9.1 Appendix A, Pro-Wedge Welding Speed / Temperature Chart
Material Type
Thickness
mil (mm)
Ambient
Temperature
Wedge
Temperature
Maximum
Welding
Speed ft/min
(m/min)
Solid
Wedge
Split
Wedge
Solid
Nips
Split
Nips
Upper
contour rollers
HDPE
12 (0.3)
65-85 F (18-30 C)
650 F (340 C)
32 (9.8)
X
rubber
single light
HDPE
20 (0.5)
65-85 F (18-30 C)
750 F (400 C)
25 (7.6)
X
rubber
single upper
HDPE
30 (0.75)
65-85 F (18-30 C)
750 F (400 C)
18 (5.5)
X
rubber
single upper
HDPE
40 (1.0)
65-85 F (18-30 C)
750 F (400 C)
16 (4.9)
X
steel
double/triple
HDPE
60 (1.5)
65-85 F (18-30 C)
860 F (460 C)
15 (4.6)
X
steel
double /triple
HDPE
80 (2.0)
65-85 F (18-30 C)
860 F (460 C)
13 (4.0)
X
steel
double/triple
HDPE
100 (2.5)
65-85 F (18-30 C)
860 F (460 C)
12 (3.7)
X
steel
double/triple
HDPE
120 (3.0)
65-85 F (18-30 C)
860 F (460 C)
8 (2.4)
X
steel
double/triple
LLDPE
20 (0.5)
65-85 F (18-30 C)
600 F (315 C)
25 (7.6)
X
rubber
single upper
LLDPE
30 (0.75)
65-85 F (18-30 C)
650 F (340 C)
22 (6.7)
X
rubber
single upper
LLDPE
40 (1.0)
65-85 F (18-30 C)
750 F (400 C)
20 (6.1)
X
steel
single/double
LLDPE
60 (1.5)
65-85 F (18-30 C)
800 F (425 C)
18 (5.5)
X
steel
double/triple
LLDPE
80 (2.0)
65-85 F (18-30 C)
860 F (460 C)
15 (4.6)
X
steel
double/triple
Non-reinforced PVC/PP
20 (0.5)
65-85 F (18-30 C)
650 F (340 C)
25 (7.6)
X
X
rubber
single upper
Non-reinforced PVC/PP
30 (0.75)
65-85 F (18-30 C)
700 F (370 C)
22 (6.7)
X
X
rubber
single upper
Non-reinforced PVC/PP
40 (1.0)
65-85 F (18-30 C)
750 F (400 C)
20 (6.1)
X
X
rubber
single/double
Non-reinforced PVC/PP
50-60
65-85 F (18-30 C)
800 F (425 C)
18 (5.5)
X
X
steel
steel
double/triple
Non-reinforced PVC/PP
80 (2.0)
65-85 F (18-30 C)
860 F (460 C)
15 (4.6)
X
X
steel
steel
double/triple
Reinforced PP
36 (0.9)
65-85 F (18-30 C)
750 F (400 C)
32 (9.8)
X
steel
single/single
Reinforced PP
45 (1.1)
65-85 F (18-30 C)
750 F (400 C)
32 (9.8)
X
steel
single/single
Weight
oz. / sq.
yd.
Non-woven geotextile
4 to 8
65-85 F (18-30 C)
650 F (340 C)
32 (9.8)
X
X
steel
steel
wedge
Non-woven geotextile
10 to 12
65-85 F (18-30 C)
650 F (340 C)
32 (9.8)
X
X
steel
steel
wedge
Non-woven geotextile
14 to 20
65-85 F (18-30 C)
650 F (340 C)
25 (7.6)
X
X
steel
steel
wedge
Non-woven geotextile
22 to 32
65-85 F (18-30 C)
650 F (340 C)
22 (6.7)
X
X
steel
steel
wedge
Non-woven geotextile
Up to 50
65-85 F (18-30 C)
650 F (340 C)
18 (5.5)
X
X
steel
steel
wedge
NOTE: The above parameters are intended as a basic starting point only
and will need to be adjusted to compensate for each individual ambient and site condition.
Manufacturer assumes no liability for weld quality using the above
parameters!!