Lincoln Electric IM467-B TIG Welding Sequence Operation 2-STEP Mode, Electrode High Frequency

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B-19

B-19

OPERATION

TIG WELDING SEQUENCE OF

OPERATION (2-STEP MODE)

WARNING

Do not leave stick electrode welding cable connected. It will be electrically “hot” when TIG welding.

1.Connect an Amptrol or Arc Start switch to the Remote Receptacle.

hose and torch. After a time determined by the Preflow control setting, the high frequency becomes available to strike the arc.

11.Hold the Arc Start Switch down or operate the Amptrol until the weld is completed. Release the Arc Start switch or the Amptrol to stop the arc. When the Afterflow timer completes the cycle, the gas and water valves close. To make another weld, repeat steps 10 and 11.

2.Turn the welder, water supply (if equipped) and gas supply on. The pilot light on the front panel indicates when the power is on.

3.Select REMOTE or LOCAL current control (REMOTE requires an Amptrol).

Select TIG mode.

Select CONTINUOUS or START high frequency. Select AC or DC- electrode polarity. See Table B.3 for recommended polarity settings.

TABLE B.3

RECOMMENDED SETTINGS FOR TIG WELDING

 

Electrode

High Frequency

Type of Welding

Polarity

Switch

 

 

 

Stainless Steel

DC-

Start

Aluminum and

 

 

Magnesium

AC

Continuous

 

 

 

Other Metals

DC-

Start

 

 

 

4.Preset the maximum current with the Current con- trol and the Ammeter.

5.(Arc Force control has no effect in TIG mode.)

6.If in AC, set AC Wave Balance control. (See CON- TROLS AND SETTINGS, item 8, “AC Wave Balance.” This control has no effect in DC.)

7.Set Afterflow time.

8.Set Function Panel controls as needed. (See

CONTROLS AND SETTINGS.)

9.Press the Arc Start switch or Amptrol and set the gas flowmeter. The welder is now ready for weld- ing.

10.Position the tungsten electrode at the start of the weld at a 65° to 75° angle with the horizontal so that the electrode is approximately 1/8” (3.2 mm) above the workpiece. Press the Arc Start switch or operate the Amptrol. This opens the gas and water valves to automatically purge air from the

TIG WELDING SEQUENCE OF

OPERATION (4-STEP MODE)

WARNING

Do not leave stick electrode welding cable connected. It will be electrically “hot” when TIG welding.

1.Connect an Arc Start switch to the Remote Receptacle.

2.Turn the welder, water supply (if so equipped) and gas supply on. The pilot light on the front panel indicates when the power is on.

3.Select LOCAL current control. Select TIG mode. Select CONTINUOUS or START high frequency. Select AC or DC- electrode polarity (See Table B.3 for recommended polarity settings).

4.Preset the maximum current with the Peak Current control and the Ammeter.

5.(Arc Force Control has no effect in TIG mode.)

6.If in AC, set AC Wave Balance control. (See CON- TROLS AND SETTINGS, item 8, “AC Wave Balance. This control has no effect in DC.)

7.Set Afterflow time.

8.Set Function Panel controls as needed. (See CONTROLS AND SETTINGS, “Lower Case Front Controls”)

9.Press the Arc Start switch and set the gas flowmeter. The welder is now ready for welding.

10.Position the tungsten electrode at the start of the weld at a 65° to 75° angle with the horizontal so that the electrode is approximately 1/8” (4 mm) above the workpiece. Press the Arc Start switch. This opens the gas and water valves to automati- cally purge air from the hose and torch. After a time determined by the Preflow control setting, the high frequency becomes available to strike the arc.

SQUARE WAVE TIG 355

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Contents Square Wave TIG Safety Electric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Thank You Table of Contents Section E Section CSection D P196 SeriesInstallation Technical Specifications Square Wave TIGSelect Suitable Location Safety PrecautionsHigh Frequency Interference Protection Input Supply Connection Input ConnectionsGround Connection Electric Shock can killReconnect Procedure Figure A.2 Input Supply ConnectionsVolt/Freq Nameplate AWG Copper Cond Table A.1 Recommended Input Wire and Fuse SizesTable A.2 Recommended Input Wire and Fuse Sizes Volt/Freq AC Output AWG Copper CondLengths up to 100 to 200 ft 200 to 250 ft Output ConnectionsTIG Torch Connection 100 ft 30 m 30 to 61 m 61 to 76 mStick Electrode Cable Connection Safety Instructions Operating InstructionsGeneral Description Operational Features and ControlsDesign Features and Advantages Recommended ProcessesWelding Capability LimitationsControls and Settings Upper Case Front ControlsHigh Frequency Switch Mode SwitchSTEP/4-STEP Switch Upper Case Front Control PanelAC Wave Balance VOLTS/AMPS SwitchPeak Current Control Auto Balance LEDPulse Controls Spot ControlsStart Controls Figure B.2 Status Indicator Light Sequence Square Wave TIG Crater Fill ControlsOperation Lower Case Front Controls Figure B.3 Lower Case Frontcontrols Square Wave TIGOperation Hand and Foot Amptrol Operation Operation Stick Welding Welding OperationInitial START-UP TIG Welding GuidelinesIllustrated in the 2-Step Mode for clarity Table B.1 Specific Effects of ControlsCrater Fill Switch on OFFSpot Switch OFF Start Switch onPulse Switch on Crater Fill Switch on Spot Switch onTable B.2 Typical Current RANGES1 for Tungsten ELECTRODES2 Dcen Dcep + Unbalanced Wave Balanced WaveTable B.3 Recommended Settings for TIG Welding TIG Welding Sequence Operation 2-STEP ModeTIG Welding Sequence Operation 4-STEP Mode Polarity SwitchOverload Protection Auxiliary PowerALL Machines Accessories OPTIONS/ACCESSORIESMaintenance Input Power Factor Capacitor Discharge ProcedureRoutine and Periodic Maintenance Figure D.2 General Component Locations Troubleshooting Guide General Machine TroubleTroubleshooting Guide Stick Welding Symptom Cause and RemedyTroubleshooting Guide TIG Welding TIG Welding Lower Panel Controls Accessories K870 Foot Amptrol or K963 Hand AmptrolDiagrams Dimension Print Square Wave TIG355 Equipment Installation Certification Equipment MANUFACTURER’S CertificationPage Precaucion Aviso DE
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