B-5

OPERATION

B-5

 

 

 

TIG WELDING

The TOUCH START TIG setting of the MODE switch is for DC TIG (Tungsten Inert Gas) welding. To initiate a weld, the CONTROL dial is first set to the desired cur- rent and the tungsten is touched to the work. During the time the tungsten is touching the work there is very little voltage or current and in general, no tungsten con- tamination. Then, the tungsten is gently lifted off the work in a rocking motion, which establishes the arc.

The ARC CONTROL is not active in the TIG mode.To STOP a weld, simply pull the TIG torch away from the work. When the arc voltage reaches approximately 30 Volts the arc will go out and the machine will reset the current to the Touch Start level. To reinitiate the arc, re touch the tungsten to the work and lift. Alternatively, the weld can be stopped by releasing the Amptrol or arc start switch.

The RANGER 305G can be used in a wide variety of DC TIG welding applications. In general the ‘Touch Start’ feature allows contamination free starting without the use of a Hi-frequency unit. If desired, the K930-2 TIG Module can be used with the Ranger 305D. The settings are for reference.

RANGER 305G settings when using the K930-2 TIG Module with an Amptrol or Arc Start Switch:

•Set the MODE Switch to the TOUCH START TIG setting.

•Set the "IDLER" Switch to the "AUTO" position.

•Set the "WELDING TERMINALS" switch to the "REMOTELY CONTROLLED" position. This will keep the "Solid State" contactor open and provide a “cold” electrode until the Amptrol or Arc Start Switch is pressed

When using the TIG Module, the OUTPUT control on the RANGER 305G is used to set the maximum range of the CURRENT CONTROL on the TIG module or an Amptrol if connected to the TIG Module.

WIRE WELDING-CV

Connect a wire feeder to the RANGER 305G accord- ing to the instructions in INSTALLATION INSTRUC- TIONS Section.

The RANGER 305G in the CV-WIRE mode, 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. Turning the ARC CONTROL clockwise from –10 (soft) to +10 (crisp) changes the arc from soft and washed-in to crisp and narrow. It acts as an induc- tance control. The proper setting depends on the pro- cedure and operator preference. Start with the dial set at 0.

Listed below are some wires suitable for use on this machine:

•Innershield - NR-311, NS-3M, NR-207, NR-203 Ni 1%, NR-212.

•Outershield - 0S-70, 0S-71M, 0S-71 ELITE.

•Solid wires for MIG welding - .035 (0.9 mm), and

.045 (1.1 mm), Super Arc L-50 and L-56, .035 (0.9 mm) and

.045 (1.1 mm) Blue Max MIG 308 LS.

Contact your local authorized Lincoln Electric Distributor or the Lincoln Electric Company for specific wires used on certain applications with this machine.

TYPICAL CURRENT RANGES (1) FOR TUNGSTEN ELECTRODES(2)

Tungsten Electrode

DCEN (-)

DCEP (+)

 

Approximate Argon Gas Flow

 

TIG TORCH

Diameter in. (mm)

 

 

 

Flow Rate C.F.H. ( l

/min.)

 

Nozzle Size (4), (5)

 

 

1%, 2% Thoriated

1%, 2% Thoriated

 

Aluminum

 

 

Stainless Steel

 

 

 

 

Tungsten

Tungsten

 

 

 

 

 

 

 

.010

(.25)

2-15

(3)

 

3-8

(2-4)

 

3-8

(2-4)

#4, #5, #6

0.020

(.50)

5-20

(3)

 

5-10

(3-5)

 

5-10

(3-5)

 

0.040

(1.0)

15-80

(3)

 

5-10

(3-5)

 

5-10

(3-5)

 

1/16

(1.6)

70-150

10-20

1

5-10

(3-5)

 

9-13

(4-6)

#5, #6

3/32

(2.4)

150-250

15-30

1

13-17

(6-8)

 

11-15

(5-7)

#6, #7, #8

1/8

(3.2)

250-400

25-40

 

15-23

(7-11)

 

11-15

(5-7)

 

5/32

(4.0)

400-500

40-55

 

21-25

(10-12)

 

13-17

(6-8)

#8, #10

3/16

(4.8)

500-750

55-80

 

23-27

(11-13)

 

18-22

(8-10)

 

1/4

(6.4)

750-1000

80-125

 

28-32

(13-15)

 

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

= _ 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.

RANGER 305G

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Lincoln Electric IM834-B manual TIG Welding, Wire WELDING-CV, Typical Current Ranges 1 for Tungsten ELECTRODES2
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IM834-B specifications

The Lincoln Electric IM834-B is a state-of-the-art industrial inverter multi-process welder designed to meet the demands of various welding applications. Known for its versatility, this machine accommodates MIG, TIG, and stick welding processes, making it a go-to solution for welders in fabrication shops, maintenance facilities, and construction sites.

One of the standout features of the IM834-B is its advanced inverter technology. This technology allows the machine to convert incoming electrical power into a more efficient output, reducing energy consumption while delivering consistent performance. The inverter design also contributes to the welder’s lightweight and compact build, enhancing portability without compromising on power. Weighing significantly less than traditional transformers, the IM834-B can be easily transported between job sites.

Another key characteristic of the IM834-B is its user-friendly interface. The machine features an intuitive digital display that provides real-time feedback on welding parameters. This allows operators to make quick adjustments and ensures precise control over the welding process. The controls are designed with simplicity in mind, facilitating ease of use for both novice and experienced welders.

The IM834-B also incorporates advanced technologies that enhance weld quality and efficiency. It features a synergic control that automatically adjusts the voltage and wire feed speed according to the selected material and thickness. This makes it easier to achieve optimal welding conditions without extensive manual setup, thereby reducing the learning curve for new users.

Moreover, the IM834-B is equipped with robust safety features, including overcurrent and overheat protection. These safeguards ensure that the welder operates safely under varying conditions, extending the machine's lifespan and maintaining performance integrity.

In terms of welding capabilities, the IM834-B supports a wide range of materials, including steel, stainless steel, and aluminum, making it suitable for diverse applications. Its high duty cycle allows for prolonged usage, making it ideal for heavy-duty tasks.

In summary, the Lincoln Electric IM834-B is an innovative and versatile multi-process welder that combines advanced inverter technology, user-friendly controls, and exceptional safety features. Its lightweight design, efficiency, and adaptability to various welding processes make it an excellent choice for professionals seeking reliability and performance in their welding equipment.
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