Lincoln Electric 3200HD, IM759 manual Process Guidelines, Making a Weld, Cleaning Tip And Nozzle

Page 19

B-5

OPERATION

B-5

 

 

 

Contact Tip

Wire Electrode

3/8" – 1/2" Electrical Stickout

FIGURE B.6

Making A Weld

1.See “Process Guidelines” in this section for selec- tion of welding wire and shielding gas and for range of metal thicknesses that can be welded.

2.See the Application chart on the inside of the wire feed compartment door for information on setting the WELD-PAK 3200HD controls. Refer to Table B.1 for aluminum and stainless wire.

3.Set the Voltage (“V”) and Wire Speed (“olo’”) con- trols to the settings suggested for the welding wire and base metal thickness being used, refer to Applications chart on the inside of the wire drive compartment door.

4.Check that the polarity is correct for the welding wire being used and that the gas supply, if required, is turned on.

5.When using Innershield electrode, remove the gas nozzle and install the gasless nozzle. This will improve visibility of the arc and protect the gas dif- fuser from weld spatter. Refer to the MAINTE- NANCE section for details on nozzle replacement.

GUN CABLE

WORKPIECE

ARC

WORK CLAMP

FIGURE B.7

6.Refer to Figure B.7. Connect work clamp to metal to be welded. Work clamp must make good elec- trical contact to the workpiece. The workpiece must also be grounded as stated in “Arc Welding Safety Precautions” in the beginning of this manu- al.

7.Position gun over joint. End of wire may be lightly touching the work.

8.Lower welding helmet, close gun trigger, and begin welding. Hold the gun so the contact tip to work distance is about 3/8 inch (10 mm).

9.To stop welding, release the gun trigger and then pull the gun away from the work after the arc goes out.

10.When no more welding is to be done, close valve on gas cylinder (if used), momentarily operate gun trigger to release gas pressure, and turn off the WELD-PAK 3200HD.

Cleaning Tip And Nozzle

Clean the contact tip and nozzle to avoid arc bridging between the nozzle and contact tip which can result in a shorted nozzle, poor welds and an overheated gun. Hint: Anti-stick spray or gel, available from a welding supply distributor, may reduce buildup and aid in spat- ter removal.

PROCESS GUIDELINES

The WELD-PAK 3200HD can be used for welding mild steel using the GMAW, single pass, process which requires a supply of shielding gas or it can be used for the self-shielded, Innershield® process (FCAW).

The recommended gases and electrodes for GMAW are welding grade CO2 gas or an argon-CO2blended gas (75 to 80% argon and 25 to 20% CO2) and .025" (0.6 mm) diameter Lincoln L-56 mild-steel welding wire, supplied on 12-1/2 lb (5.7 kg) spools. The blend- ed gas is recommended for welding on heavier steel, 14 gauge (2.0 mm), for example.

The recommended electrode for the self-shielded process is .035” (0.9 mm) diameter Lincoln Innershield® NR-211-MP on 10 lb (4.5 kg) spools. This electrode can be used for all position welding of 20 gauge (1.0 mm) through 5/16" (8 mm) steel. Thickness of 1/4" (6 mm) and 5/16" (8 mm) require multiple passes. This wire can also be used for the welding of galvanized coated sheet metal.

WELD-PAK 3200HD

Page 18 Page 20
Image 19
Page 18 Page 20
Contents WELD-PAK 3200HD California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately Thank YouMaster Table of Contents for ALL Sections Technical Specifications WELD-PAK 3200HD InstallationIdentify and Locate Components Safety PrecautionsElectric Shock can kill Stacking Work Clamp InstallationSelect Suitable Location Output ConnectionsGAS Connection GUN InstallationWork Cable Installation Connecting Gun Cable to the WELD-PAKFigure A.5 Code Requirements for Input Connections Input ConnectionsRequirements For Rated Output Figure A.7 WELD-PAK 3200HD Undercarriage AssemblyRecommended Processes Design FeaturesOperation General DescriptionWelding Capability Controls and SettingsLimitations Welding Operations Wire LoadingSequence of Operation Wire Threading Friction Brake AdjustmentProcess Guidelines Cleaning Tip And NozzleMaking a Weld Welding with Gmaw MIG Changing Machine Over to Feed Other Wire SizesOverload Protection SELF-SHIELDED Fcaw Welding ARC Learning to WeldLearning to Weld ARC-WELDING CircuitProcess Selection Gmaw MIG Welding ARCFor Fcaw Innershield Process Common MetalsJoint Types and Positions For Gmaw MIG ProcessPenetration Welding In The Vertical PositionFillet Welds Correct Welding Position Machine SET UP for the SELF-SHIELDED Fcaw ProcessWelding Techniques for the SELF- Shielded Fcaw Process Vertical-down WeldingCorrect Welding Speed Correct Electrical Stickout ESOPractice Helpful HintsWelding Techniques for the Gmaw MIG Process Machine SET UP for the Gmaw MIG ProcessFor the WELD-PAK 3200HD, use the following To Eliminate Stubbing* in order of importance Troubleshooting WeldsTo Eliminate a Ropy Convex Bead in order of importance To Correct Poor Penetration in order of impor- tanceProper Gun Handling Application Chart Optional Accessories AccessoriesK586-1 Deluxe Adjustable Gas Regulator Hose Kit Replacement Parts Maintenance Safety Precautions MaintenanceRoutine Maintenance Contact Tip Cable Liner Drive Roll GUN and Cable MaintenanceConfiguration of Components in Wire Feeding System For Magnum 100L GUNChanging the Contact TIP Component Replacement ProceduresChanging Drive Roll GUN Handle Parts Changing LinerLiner trim length HOW to USE Troubleshooting Guide TroubleshootingRecommended Course of Action Problems Possible Areas Symptoms MisadjustmentsFacility Contact your local Lincoln Authorized Field ServiceWelding Problems WELD-PAK 3200HD Wiring Diagram DiagramsWELD-PAK 3200HD $700.00 How To Read Shop DrawingsNew Lessons in Arc Welding Need Welding Training?Precaucion Warnung
Top Page Image Contents