Lincoln Electric STT II dimensions Features, Quality and Reliability, Gmaw

A CLOSER LOOK

COMPARING STT TO	WHEN TO USE STT	UTILIZING STT ON THE STT II
CONVENTIONAL PROCESSES
Advantages of STT replacing short-arc	STT is the process of choice for low heat	Adjust WIRE FEED SPEED to:
GMAW:	input welds.	• control the deposition rate
• Significantly reduces lack of fusion
• Good puddle control	STT is also ideal for:	Adjust PEAK CURRENT to:
• Capable of producing consistent X-ray	• Open root – pipe and plate	• control the arc length
quality welds	• Thin gauge material – automotive
• Reduced training time	• Stainless steel and nickel alloy –	Adjust BACKGROUND CURRENT to:
• Lower fume generation and spatter	petrochemical utility and food industry	• control heat input (fine)
• Can use various compositions of	• Silicon bronze - automotive
shielding gas	• Galvanized steel	Adjust TAILOUT to:
• 100% CO2 (on mild steel)	• Semiautomatic and robotic applications	• control heat input (coarse)
Advantages of STT replacing GTAW:		Adjust HOT START to:
• Four times faster than GTAW		• control the heat input at the start
• Vertical down welding		of the weld.

•Reduced training time

•Can use various compositions of shielding gas

•100% CO2 (on mild steel)

•Welds stainless, nickel alloys and mild steel

•Consistent x-ray quality welds

FEATURES

Key Controls

1.Tailout Control

2.Hot Start Control

3.Peak Current LED Display

4.Peak Current Control Knob

5.10 Pin Remote Control for Peak and Background Current

6.14 Pin Wire Feeder Control with 42V/115V Auxiliary Power

7.Sense Lead Connection [K940-25, 25 ft. (7.6m) Sense Lead Kit included]

8.Twist-Mate Output Connectors

(2 Twist-Mate Plugs (M15479) Included)

9.42V/115V Circuit Breakers

10.Power Switch

11.Background Current Control Knob

12.Background Current LED Display

13.Wire Mode Switch

14.Wire Diameter Switch

1

	14
2		13
3				12
4			11

5

10

6

9

7

8

QUALITY AND RELIABILITY

• Electronic and thermostatic protection from current overload and excessive temperatures with thermal indicator light.

• Three-year Lincoln warranty on parts and labor.

• Manufactured under a quality system certified to ISO 9001 requirements and ISO 14001 environmental standards.

Printed circuit boards are environmentally- shielded using Lincoln's engineered potting and protective frame trays.

	Invertec® STT® II
[4]	www.lincolnelectric.com