B-8

 

 

 

 

OPERATION

 

 

B-8

 

 

 

 

 

 

 

 

 

 

 

 

 

Table B.2 TYPICAL CURRENT RANGES (1) FOR TUNGSTEN ELECTRODES(2)

 

 

 

 

 

 

 

 

 

 

 

 

 

DCEN (-)

DCEP (+)

Approximate Argon Gas Flow Rate

 

 

 

 

 

 

 

 

C.F.H. (l/min.)

 

 

 

 

Tungsten

 

 

 

 

 

 

 

 

Electrode

 

 

 

 

TIG TORCH

 

 

 

1%, 2%

1%, 2%

 

 

 

 

 

Diameter

 

 

Nozzle

 

 

 

Thoriated

Thoriated

Stainless Steel

 

 

 

in. (mm)

Size (4), (5)

 

 

 

Tungsten

Tungsten

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 .010

(.25)

2-15

(3)

3-8

(2-4)

#4, #5, #6

 

 

0.020

(.50)

5-20

(3)

5-10

(3-5)

 

 

 

0.040

(1.0)

15-80

(3)

5-10

(3-5)

 

 

 

1/16

(1.6)

70-150

10-20

9-13

(4-6)

#5, #6

 

 

3/32

(2.4)

150-250

15-30

11-15

(5-7)

#6, #7, #8

 

 

1/8

(3.2)

250-400

25-40

11-15

(5-7)

 

 

 

5/32

(4.0)

400-500

40-55

13-17

(6-8)

#8, #10

 

 

3/16

(4.8)

500-750

55-80

18-22

(8-10)

 

 

 

1/4

(6.4)

750-1000

80-125

23-27

(11-13)

 

 

 

 

 

 

 

 

 

 

 

 

(1)When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shielding gases.

(2)Tungsten electrodes are classified as follows by the American Welding Society (AWS):

Pure

EWP

1% Thoriated

EWTh-1

2% Thoriated

EWTh-2

Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in AC and DC applications.

(3)DCEP is not commonly used in these sizes.

(4)TIG torch nozzle “sizes” are in multiples of 1/16ths of an inch:

# 4 = 1/4 in.

(6 mm)

# 5

= 5/16 in.

(8 mm)

# 6

= 3/8 in.

(10 mm)

# 7

= 7/16 in.

(11 mm)

# 8

= 1/2 in.

(12.5 mm)

#10 = 5/8 in.

(16 mm)

(5)TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are less prone to breakage, but cannot withstand high temperatures and high duty cycles.

WIRE WELDING

Connect a wire feeder to the Ranger 275 and set welder controls according to the instructions on the appropriate wire feeder connection diagram.

The Ranger 275 in the ”WIRE FEED” position, permits it to be used with a broad range of flux cored wire (Innershield and Outershield) electrodes and solid wires for MIG welding (gas metal arc welding). Welding can be finely tuned using the “ARC CON- TROL”.

Some recommended Innershield electrodes are: NR- 311, NS-3M, NR-207, NR-203 Ni 1%, NR-204-H.

Recommended Outershield electrodes are: 0S-70, 0S-71M.

Some recommended solid wires for MIG welding are:

.035 (0.9 mm) and .045 (1.1 mm) L-50, L-56, and Blue Max MIG 308 LS.

For any electrodes, including the above recommenda- tions, the procedures should be kept within the rating of the machine. For additional electrode information, see Lincoln publications N-675, GS-100 and GS-210.

RANGER 275

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Image 24
Lincoln Electric 275 manual Wire Welding, Table B.2 Typical Current Ranges 1 for Tungsten ELECTRODES2
Page 23 Page 25

275 specifications

The Lincoln Electric 275 is a versatile multi-process welding machine that stands out for its advanced features and robust performance. Designed for both novice and experienced welders, the machine offers MIG, TIG, and stick welding capabilities, making it a valuable tool for a variety of applications.

One of the main features of the Lincoln Electric 275 is its power output. With an impressive selection of amperage settings, it can deliver between 25 to 275 amps, making it suitable for both thin and thick materials. This flexibility allows users to work on projects ranging from automotive repairs to industrial fabrication.

The machine utilizes inverter technology, which significantly enhances its efficiency and reduces power consumption. Inverter welders are known for their lightweight design and compact size compared to traditional transformer-based welders. This portability makes the Lincoln Electric 275 easy to transport to job sites, catering to both professional and hobbyist welders who require mobility.

Another defining characteristic of the Lincoln Electric 275 is its easy-to-use interface. The digital display provides clear readings, allowing users to effortlessly adjust settings for optimal performance. Additionally, the machine features a user-friendly control panel with distinct knobs for regulating voltage and wire feed speed, assisting welders in achieving precise welds.

The Lincoln Electric 275 is also equipped with advanced arc technologies. Its built-in arc control enhances the stability of the welding arc, resulting in a smoother, more consistent weld. Furthermore, the machine offers synergic controls that automatically adjust the voltage and wire feed speed based on the selected material and thickness, making the welding process more intuitive and reducing the margin for error.

Durability is another hallmark of the Lincoln Electric 275. Constructed with high-quality materials, the machine is built to withstand the rigors of daily use in demanding environments. Its design also incorporates efficient cooling mechanisms to prevent overheating during prolonged operations, ensuring longevity and reliability.

In conclusion, the Lincoln Electric 275 is a powerful and adaptable welding machine that combines advanced technology with user-friendly features. Its multi-process capabilities, inverter technology, and robust construction make it an essential tool for both professional welders and DIY enthusiasts. Whether tackling intricate projects or heavy-duty tasks, the Lincoln Electric 275 proves to be a reliable choice that does not compromise on performance.
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