Introduction; General; Welding Method; Definitions - ESAB A2 TF Instruction Manual

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INTRODUCTION

2.1

General

The A2 TF automatic welding machine is designed for Submerged Arc Welding of
butt and fillet joints.
The A2 TG automatic welding machine is designed for MIG/MAG welding of butt and
fillet joints.
All other applications are prohibited.
They are intended for use in combination with A2 Welding Control Unit (PEI) and
ESAB's welding power source LAF.
2.2

Welding Method

2.2.1 Submerged Arc Welding (SAW)
For submerged arc welding the A2 TF automatic welding machine is always to be
used.
Submerged arc Light Duty.
S
Submerged arc light duty with a Ø 20 mm connector permits a load up to 800 A
(100%).
This version can be equipped with feed rollers for single or twin wire welding
(twin--arc). A special knurled feed roller is available for flux--cored wire, which
guarantees even wire feed without the risk of deformation due to high feed pressure.
2.2.2 MIG/MAG Welding
For MIG/MAG welding use either automatic welding machine A2 TG.
In MIG/MAG welding the welding bead is shielded by way of shielding gas.
The welding head is water--cooled. The cooling water is supplied by hoses from
connections intended for the purpose.
2.3

Definitions

SAW welding
SAW Light duty
MIG/MAG welding
Twin- -arc welding
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The weld bead is protected by a cover of flux during the
welding.
Permits welding with lower current load and thin wire.
The weld bead is protected by shielding gas during
welding.
Welding with two wires in one welding head.
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