The Process: 

Submerged Arc Welding (SAW) is the process in which a continuous solid or flux cored wire in the form of spool is used as the electrode and current for the welding arc is supplied by a suitable power source. The arc is submerged under a layer of dry, granular flux in order to shield the weld from atmospheric oxidation. The flux is fed from a hopper ahead of the arc. The excess unused flux is collected either manually or through a flux recovery system and re-used. 

The Power Source: 

All Easeweld outfits comprise proven constant potential type rectifier power sources. These power sources are best suited for automatic as well as semi automatic submerged arc welding applications. The power sources are mounted on wheels.

Salient Feature:

»  The machines are fitted with thermal overload protection system. 

»  Robust construction and built for long life and reliability.

»  Negligible maintenance required.

»  Stepless primary control results in high power factor which reduced the power consumption.

»  Fan provided for adequate cooling of all power elements 

Submerged Arc Welding Heads-Salient Features: 

»  Modular type design suitable for carriage mounting or stationary systems.

»  Smooth and precise wire feeding by MOSFET controlled DC drive systems.

»  A similar DC drive system is used for smooth & steady travel of the carriage. Both the drive systems use 25V Max. Control voltage which ensures operator safety.

»  Swiveling and tilting arrangements ensure access to difficult welding areas and provide for fillet welding applications.

»  Hopper can hold approx.10 kgs flux for long uninterrupted seams without replenishment.

»  Controls like wire inching, forward / reverse, start / stop and display like ammeter, voltmeter and carriage speed meter are mounted on the control panel for easy adjustments and monitoring of the parameters.

»  Control box is mounted on swivelling brackets for easy positioning as desired by the operator.

»  Smooth and jerk free movements of horizontal and vertical slides enable precise adjustments of welding

»  Facilities provided to check OCV and carriage speed before starting the machine.

»  Completely automatic welding and burn-back control by means of reliable solid state circuitry.

»  Simple start/stop push bottons are provided, wire feed, power source and carriage travel in the right sequence.

»  Sturdy wire spool holder assembly with spring loaded guide clamps which are adjustable to accommodate SUBARC wire spool of 285 to 315mm internal diameter are provided

»  Wire straightening is an integral part of the system.

»  Bi-directional carriage movement is ideal for high productivity multi-pass welds.

»  Motorised cross slide arrangement for boom mounting type welding heads available as optional attachments.

NOTE : In case the subarc welding heads are to be used with any power source other than recommended, then a separate power supply unit will be required. This is supplied on specific requirement, provided full details of the power source intended to be used are specified while placing the order. 

Technical Specifications:

Easeweld Model EMHD Series 4 x 4mtrs. to 10 mtrs. Manipulator heavy duty Column & Boom are specially designed and built to with stand the harsh and rugged environments expected in the welding industry. 

Salient Features:

»  A Slewing ring for column mounting, thereby providing a smooth 360 lockable rotation of the column around its axis by means of anti-friction taper roller Thrust Bearing's.

»  All vertical and horizontal rails are precisely machined in Single runs giving unsurpassed smooth and steadily travel.

»  Latest inverter drives fitted for variable speed of horizontal boom arm travel and rail travel car (optional). Warm gearbox for vertical travel via AC motor complete with brake for added safety.

»  High tensile roller Chain/Rope used for vertical travel with additional counter of balance system provides the smooth effortless vertical travel.

»  PB/ Bush bearings with eccentric pin mounting for easy adjustment of guiding pressure

»  IP 55 Control box and low voltage pendant control station.

»  Electrical as well as mechanical limiting mechanisms against overriding.

»  Standard safety features includes anti fall device and limit switches for all functions.

»  Internally trunked cabling.

»  Operators chair on the Boom.

Optional Features:

»  Motorized trolley base for mechanical travelling of the manipulators on rails - AC (VFD)

»  Motorized swiveling of the column with AC VFD.

»  X - Y Slide, manual or motorized, operated via the same pendant station.

»  Compressed air operated flux recovery unit.

»  Welding power source & wire feeder controller system.

High Lights:

»  Sophisticated MOSFET controls ensure soft starting and dynamic braking of motors.

»  High rated contactors for AC Motor.

»  Robust and vibration free construction.

»  Boom drive is through self - locked, backlash free worm reducer.

»  Accurately machined guides for both vertical and horizontal travel.

Technical Specifications: