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Shielded Metal Arc Welding Machine Manufacturer,Supplier and Exporter in India

Product Code : EL-SWES-8742
Jlab Export is a leading Shielded Metal Arc Welding Machine Manufacturer,and suppliers in India

This stick welding set runs flux-coated electrodes from a three-phase AC 440 V supply and gives a welding current of 20–300 A. It draws 12 kVA at a power factor of 0.93. The input circuit has protection against low voltage, high voltage, single phasing and voltage surges, and the case measures 580 x 320 x 495 mm.

Specifications

Input supply	AC 440 V, 3-phase, ±15%, 50/60 Hz
Rated input capacity	12 kVA
No-load voltage	69 V
Welding current	20–300 A
Rated output voltage	33 V
Duty cycle	60%
Efficiency / power factor	85% / 0.93
Input protection	Low voltage, high voltage, single phasing and surge
Overall dimensions	580 x 320 x 495 mm
Protection class	IP23
Minimum order quantity	1 unit
Dispatch time	Usually 14–18 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Stick Welding Exercises for ITI Students

Welder trainees begin by striking the arc and running straight beads on mild steel plate. Then they move on to butt, lap and fillet joints in the flat position. Slag is chipped off every run with a Chipping Hammer, and a Wire Brush takes the bead back to bright metal before the next pass.

A good exercise is to lay beads at several current settings with one size of Electrode and compare bead width, penetration and spatter. Finished butt joints can be cut into strips and bent on the Bend Test Equipment to show whether the weld has fused into both plates.

Frequently Asked Questions

What does the 60% duty cycle mean?
At its rated output the set can weld for 60% of any ten-minute period, about six minutes, and then needs four minutes to cool. At lower currents it can weld for longer.

Which electrodes does it use?
It is a shielded metal arc set, so it burns flux-coated stick electrodes. The coating melts into a gas shield and a slag cover that protect the weld pool. Pick the rod diameter for the plate thickness, then set the current to suit that rod.

What supply does it need?
A three-phase AC 440 V supply held within plus or minus 15%, at 50 or 60 Hz, able to deliver 12 kVA. Have an electrician fit a correctly rated isolator and supply cable before the set is first connected.

What is the 69 V no-load voltage for?
No-load, or open-circuit, voltage is the voltage between the electrode holder and the earth clamp before the arc strikes. A higher figure helps the arc light. Once welding starts it falls to the working arc voltage, rated at 33 V on this set.