Lincoln Electric IM892-C manual GMAW-STT Welding, Figure B.15

B-20	OPERATION	B-20
GMAW-STT™ WELDING		FIGURE B.15

Surface Tension Transfer, or STT™ welding, is a break-through process offered exclusively by the Lincoln Electric Company. STT™ is a low heat, low spatter process created with Waveform Control Technology™. STT™ is the process of choice for open root welding, welding on thin materials or weld- ing on parts with poor fit-up. Low spatter, even when using 100% CO2 shielding gas, results in cost sav- ings in gas and part clean-up.

Several sets of STT™ weld modes are available.

•Modes 110 and 126 provide individual control of peak current, background current and tail-out, and are most often used in robotic applications.

•Modes 123 and 124 include Hot Start and give total control of the arc.

•Synergic STT™ modes keep the arc characteristics

the same when the wire feed speed is changed. 2

Note: STT™ is available only with specially equipped Power Wave power sources, like the Power Wave 455M/STT.

For best results:

•Attach the work sense lead as close as possible to the welding arc.

•Use only solid steel, stainless steel or silicon bronze electrodes.

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1	K2203-1	Power Wave 455M/STT
	K2230-1	POWER FEED™ 10M, Bench Model
	K2234-1	POWER FEED™ 10M Dual, Bench Model
2	K2536-1,-2,-3	POWER FEED™ 25M
	KP1695-xx,	Drive Roll Kit, 2 Roll Feeder
	KP1507-xx	Drive Roll Kit, 4 Roll Feeder
3	K1543-xx	Digital Control Cable
	K2683-xx
4	K1796-xx, K2593-xx	Coaxial Weld Power Cable, Lug to Lug
5	K910-xx	Ground Clamp
6	K940-xx	Sense Lead Kit
7	See Magnum®	MIG Gun
	Literature
		Deluxe Regulator for Mixed
8	K586-1	Shielding Gases
		Shielding Gas Hose

POWER FEED™ 25M