Resistance Welding Machines, Resistance Welding Equipments, Welding Controller, Resistance Welding Controller, Forwel Weld Controller, Spot Welding Machines, Projection Welding Machines, Seam Welding Machines, Special Purpose Welding Machines, Pressed Parts & Components, Stamped Components, Deep Drawn Components
 
:: Products ::
     
spot and nut projection possible on the same machine
robust construction - less vibrations - no maintenance
of controller board / connectors
controlled delivery of welding current by help of
FORWEL, Korea made constant current feedback
controller
quality watch on every spot. weak or faulty spot
highlighted instantly
error and weak spot alarm buzzer
fused copper laminate fleXible links for lifetime use
epoxy powder-coated colour
high speed cylinder operations gives better cylinder
follow up
electrode movement made precise by LM bearing
engineered for minimum downtime
   
     
machine specification
unit
SS35I
SS50I
SS75I
SS100I
rated power @ 50% duty cycle
kVA
35
50
75
100
secondary voltage
volt
4.8, 6.4
5.9, 7.4
6.5, 9
6, 7, 9
welding current max
kA
12
13.5
15
20
control type
secondary feedback constant current control
time setting least count
millisec
20
20
20
20
throat depth
mm
250-300
250-300
250-300
250-300
arm gap max
mm
300
300
300
300
electrode force min - Max
kg
150 to 450
150 to 450
150 to 450
150 to 450
free air consumption (@1 bar ) for
100 spots and 25mm stroke
litres

250
250
250
250
strokes per second max at no weld
Nos
6
6
6
6
cooling water pressure
kg/cm sq
2
2
2
2
cooling water flow rate min
lt/min
9
10
10
12
welding capacity (indicative comparisons only)
sheet metal CRCA
mm
2/2.5
2.5/3
3/3
4/4
sheet metal HR
mm
2/2.5
2.5/3
3/3
4/5
sheet Metal SS
mm
1.2/1.5
1.5/2
2/2
2.5/2.5
projection nut welding
mm
M8
M10
M12
M16
dimensions depth x width
mm
1050 x 410
1050 x 410
1050 x 410
1050 x 410
height
mm
1750
1750
1750
1750
weight
Kg
500
510
520
600
note: optional low cost voltage compensation control is also available
 
PC can be connected to the controller by 2 electric wires and the maximum length could be 1.2 km
100% certainty of welded spots
non-confirmating Spots are alarmed instantly
supplies stable welding current by secondary constant current method
networking of upto 32 machines (optional)
provided with data acquisition software
printouts of welding schedules, real-time & of errors
no need of back-up battery as it stores all data to EEPROM
15 multiple schedules can be called while welding
different thickness parts can be welded in the same welding sequence by calling multiple schedules
in projection welding nuts bears 2 times breaking torque comparing with capacitor discharge method
avoids retapping & additional CO tag; provesas a cost saver
   
constant current
resistance welding controller
with inbuilt monitor function
in seam welding secondary current stability upto 0.1KA is observed after installation on existing machines
   
 
 
 
imported from South Korea;
supported & serviced in India by the
experienced & well known manufacturer of
resistance welding machines & SPMs.
 
Mfd. By - Forwel, Korea | www.forwel.com
 
FORWEL-KIRTI
  RS485 network (optional)
   
by using welding data logger (fcom_v2.0) software, welding data can be collected from each controller at real time & the collected data can be stored in excel file on computer
One PC can be linked to maximum 32 units
weld current data and scheduled data can be
requested to each controller and can be seen & printed
weld schedule can be changed from PC
event monitoring for welding defects; time & weld current data can be checked easily at real time
opto-isolated RS485 converter (option) is installed in the controller
   
 
constant current feed-back theory
 

Using a toroidal coil, the current wave form is reconstucted from the output signal.

It is then transformed into an RMS effective value using the following formula :

the control then compares this effective value with the set current value. the weld current is corrected with every half cycle through phase conversion and trigger pulse oscillation.
the result is smooth, consistent secondary welding current delivered at the weld regardless of the line voltage fluctuations.
welding control
Controllers
 
 
Welding Power
   
   
 
 
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