Virdi Electric Works Private Limited
  
spot welding machines, precision spot welding machines Virdi Electric Works Private Limited
Our Product Range


Home » Welding Machines


1 | 2 | Next »

Welding Machines

Seam Welding Machines

Introduction :
Offered in 50 to 200 KVA capacity, available in longitudnal / circumferential and universal versions. Percision built, sturdy design and robust construction suitable for high production and uninterrupted service in the manufacturing of drums, barrels, silence, fuel tanks, transformer radiator, water heater & auto rims, etc.

These machines are always made to specific customer requirement with highly sophisticated & leak proof joints.

Standard Rating :
50,75,100,150 and 200 KVA

Seam Welding Machines
Construction :
The main frame of the machine is of heavy rigidly re-inforced & robust welded steel construction. It combines a compact streamlined appearance with maximum resistance to mechanical deflection. The welding transformer is enclosed in the main frame and is easily accessible, for inspection.

STANDARD THROAT DEPTHS (mm) :
280, 460 & 600 (other throat available on request)

Normal Working Height :
900 (mm)

WELDING TRANSFORMER :
Transformer of a special type, water cooled, having core of high grade electrical steel, primary and secondary coils of solid electrolytic copper of ample section, heavy duty class ‘F’ insulated, impregnated and tropicalised suitable for withstanding continuous temperature of 140º C.

CURRENT CONTROL :
Transformer primary coils provided with taps brought out to tap change links for adjustment for welding current in a 6 step from 50 to 100%. Tap change links are enclosed behind machine door and are easily accessible for variation of welding heat.

COOLING SYSTEM :
Transformer, secondary connections, arms and electrode wheels are water cooled. Internet water cooling piping with flow adjusting values for each circuit and discharge to an open drain pot for visual observation of flow are provided in the machine.

ELECTRODE :
Circular disc type top and bottom welding Electrodes.

ELECTRODE CONTROL SYSTEM :
Upper electrode is actuated by hand lever to provide electrode force.

ELECTRONIC CONTROLS :
Seam welders are provided with solid-state electronic controls housed in a well-designed sheet steel cabinet. The standard design of the cabinet is suitable for mounting it on the sidewall of the machine; floor mounting shall also be provided a request. The control knobs and panel are elegantly arranged, provided maximum convenience to the operator. The front panel is protected from misuse by providing a transparent guard door. All internal wiring is easily accessible for servicing. The circuit design is versatile enough for almost all type of requirements and consists of the following facilities.
  • A squeeze time control to select the delay between initiation of the foot switch and the start of the weld. Timing is adjustable from 2-25 cycles, continuous
  • Synchronous (digital) timing control of 1-9 cycles “ON” and 0-9 cycles “OFF” both in steps of one cycles each.
  • Heat control circuit based on phase shifted firing of thyristors which enable continuous adjustment of current between 10% to 100% of then value available from welding transformer.
  • High power switches device consisting of 2 Thyristors connected in inverse parallel mounted on water-cooled heatsinks. The sizes of the thyristors are chosen to watch the KVA of the transformer and the devices are of ample capacity to withstand momentary overloads. Protection devices for high voltage surges and a thermoswitch (for inhibiting the operation if the temperature of the thyristor pad rises above a preset limit) are incorporated.
  • Hold time to provide a delay between stoppage of weld and separation of electrode wheels. Range of adjustment is 1-9.
WELD INITIATION :
By means of operators foot switch connected to a low voltage safe initiating circuit.

MOTOR DRIVE SYSTEM :
Machine can be supplied with either A.C. or D.C. motor drive system as per customers choice.
  • D.C. Motor driven system consists of an infinitely variable speed, reversible D.C. Motor, variac, rectifier & protective fuses system with reduction gear unit to provide stepless speed variation.
  • A.C. Motor driven system consists 3-phase induction motor speed as constant.
Note : Machine shall be supplied with A.C. MOTOR DRIVE SYSTEM AS STANDARD UNLESS SPECIFIED otherwise by the customer.

SERVICE REQUIREMENTS :
Customer to provide the following service facilities :-
POWER SUPPLY :
  • For Transformer : 415 V, Single phase, 50 cycles (suitable for connection to 2 lines of 3 phase supply). Main supply cable for transformer connection. Disconnect switch with fuses of recommended rating.
  • For Motor : 415 V, 3 phase, 50 cycles or 230 V, single phase, 50 cycles or 230 V, single phase, 50 cycles for D.C. motor drive, depending on the drive system selected supply cable 1.5 sq. MM 4 core, TPIC switch fuse unit 500 V, 15 Amps, with fuses of 5 Amps for D.C. motor Drive system.
COMPRESSED AIR :
Supply of air recommended flow volume at minimum pressure of 5.6 kg/cm2 (80 psi) by the customer.

TECHNICAL SPECIFICATIONS :

MODEL
UNIT
VSM-50
VSM-75
VSM-100
VSM-150
Normal Rating at 50%
         
Duty Cycles
KVA
50
75
100
150
Continuous Rating Of Transformer
KVA
35
55
70
110
Supply Voltage 2 Phase
         
50 Hz.
V
451
451
451
451
Switch Fuse
A
100
150
200
250
Current Taps
Nos.
6
6
6
6
Throat Depth Std.
mm
280
460
610
610
Normal Working Heights
         
 
mm
900
900
900
900
Welding Capacity
         
Mild Steel
mm
1+1
1.25+1.25
1.6+1.6
2+2
Water Supply Required
         
 
LPM
15
20
25
30
Drive Motor A.C.
         
 
HP
1
1
1.5
1.5
Dimension Overall :
         
Heights
mm
1900
1900
1900
1900
Width
mm
900
900
900
900
Depth
mm
1050
1050
1200
1200
Weight Approx
kgs
700
850
1100
1250

Projection Welding Machines

  • Spot and nut projection possible on the same machine
  • Robust construction – less vibrations – no maintenance of controller broad / connectors.
  • Controlled delivery of welding current by made constant current feedback controller.
  • Quantity watch on every spot. Weak or faulty spot highlighted instantly.
  • Error and weak spot alarm buzzer.
  • Fused copper laminate flexible links for lifetime use
  • High speed cylinder operations gives better cylinder follow up.
  • Electrode movement made precise by LM bearing.
  • Engineered for minimum downtime.

Projection Welding Machines
TECHNICAL SPECIFICATIONS :

PROJECTION WELDER
Machine Specification
Unit
VEW35
VEW50
VEW75
VEW100
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
Millisecond
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 to470
150 to470
150 to470
150 to470
Free Air Consumption (@1 bar) for
 
100 Spots and 25mm Stroke
Liters
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
It/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
5.4
Sheet Metal SS
mm
1.2/1.5
1.2/2
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
mm
500
510
520
600
Note : Optional low cost voltage compensation control is also available.

Spot Welding Machines

  • High weld abilities are achieved with special type of transformer.
  • Ability to weld thick material at low speed using short length arms.
  • In Manually operated machine at low speed using short length arms.
  • Easy maintenance.
Construction :
The unit is of robust construction sturdy heavy rigidly reinforced welded steel construction. It combines a compact streamlined appearance with maximum resistance to mechanical deflection. The transformer enclosed in the main frame and is easily accessible, for inspection.

Spot Welding MachinesSpot Welding Machines

Welding Transformer :
Manufactured from high grade materials of copper strips and sections, water cooled with class ‘F’ insulation with standing continuous temperature rise of 140`C. The coils are impregnated and tropicalised.

Current Control :
By tap method with 8 tap adjustments on primary of the main transformer having current control from 50% to 100% in 8 steps.

Cooling system :
By tap link method with 8 tap adjustments on primary of the main transformer having current control Electrodes, Electrode holders, Arms, Transformer are all water cooled with one single water-cooling circuit.

Electrode Control System :
Upper electrode is actuated by foot lever or by air cylinder. The electrode force can easily be calculated in both systems. Air system is provided with gauge and manual system with calibrated spring. All air accessories such as filter, lubricator, regulator, gauge, solenoid valve and speed valve are incorporated.

Maximum Operating Speed :
Machine is mechanically capable of attaining 60 spots per minute.

TECHNICAL SPECIFICATIONS :

Machine Model No.
UNITS
VSM-7.5
VSM-10
VSM-15
VSM-20
KVA @50% Duty Cycle
KVA
7.5
10
15
20
Rated Input Voltage
V
230/415V
230/451V
230/415V
230/415V
Transformer Cooling
Water
Water
Water
Water
Water
Water Consumption
LPM
5
5
8
10
Arms-Diameter
(mm)
40
45
51
64
Main Supply Cable Size
(mm2)
10/7
12/8
16/10
16/25
Cu / Al
         
Main Disconnection
[Amps]
25/15
30/20
60/35
60/55
Switch / fuse
         
Current Taps
Nos.
8
8
8
8
Over All Size
         
{Approximately}[mm]
D=
410
460
460
510
 
W=
250
280
280
310
 
H=
1020
1150
1300
1400

Mig Welders

VIRDI's MIG welders are used universally in light and heavy fabrication workshops, shipbuilding & auto industries, in manufacture of stainless steel, mild steel, copper vessels & container in chemical and allied industries.

These VIRDI CO2/ MIG equipment are designed and engineered for CO2 welding of mild steel, low alloy steels and MIG welding of high alloy steels and light metals.

Salient Features :
  • Welds mild steel, stainless steel wires & bronze alloy wires
  • Suitable for solid wires as well as fluxed cored wires
  • Easy connection system for torch plug-in to wire feeder
  • Most reliable / easy / maintenance wire feeder with roll / quick release type
  • Adjustable spot time control available on request
  • Coarse / Fine controls for proper selection of voltage
  • Sleek & most flexible torch
  • Wire feeder units are normally supplied as separate unit to give greater area of operation & flexibility. However in-built version is also available (on request)
Technical Specification :
Mig Welders
 
POWER SOURCE
MIG 250
MIG 400
INPUT
Supply Voltage
415 Volts AC
415 Volts AC
 
Phase
3 Phase
3 Phase
 
Frequency
50 Hz
50 Hz
 
Max KVA Rating at 60%
9 KVA
17 KVA

 

Recommended Switch
   
 
Primary Current at the Rated
TP-20
TP-30
 
Output at 415 V Supply
13 Amps.
25 Amps.
OUTPUT
Open Circuit Voltage (Max.)
18-42 Volts.
20-52 Volts DC
 
Maximum Continuous Hand
250 Amos. DC
400 Amos. DC
 
Welding Current at 60% Duty Cycle
   
 
Maximum Continuous Automatic
180 Amos. DC
350 Amps. DC
 
Welding Current at 100% Duty Cycle
   
 
Voltage Control Steps
8 Steps
8 Steps
 
Insulation Class
F
F
 
Type of cooling
Forced air cooled
Forced air cooled
 
Weight (Approx.)
140 Kg.
185 Kg.
 
Dimensions LxWxH (mm)
715x480x650 mm
825x510x725 mm
 
WIRE FEEDER UNIT
Drive System
DC Motor 110 volt, Solid State, Thyrestoriesed, wire Drive system for stepless variable setting of wire speed. Three core wire control.
 
DC Motor 110 volt, Solid State, Thyrestoriesed, wire Drive system for stepless variable setting of wire speed. Three core wire control.
Feed mechanism
Double feed role, quick change over type Plug-in-PCB for easy maintenance & Service Fuse Protection for vital PCB components against over-load.
 
Double feed role, quick change over type Plug-in-PCB for easy maintenance & Service Fuse Protection for vital PCB components against over-load.
Weight (Approx.)
26 Kg
 
26 Kg
LxWxH Dimensions
560x305x380 mm
  560x305x380mm
Torch
250 Amps at 60% duty cycle
 
400 Amps at 60% duty cycle
 
CO2 Shielding gas
 
CO2 Shielding gas.
STANDARD SCOPE OF SUPPLY
* Power Source
1 No.
welding Cable- 1 Set of Earthing Cable- 5 Meters (e.a.)
* Gas Regulator cum
* Wire Feeder
1 No.
Flow Meter
* Torch
1 No.
* CO2 Heater Assembly with Core 1 No.


1 | 2 | Next »

Home  |   Profile  |   Quality  |  Clientele  |  Contact Us   |   Enquiry Form
Member IndiaMART Member IndiaMART