Lincoln Electric 4000 Stick Welding, Learning To Stick Weld, B-11, ARC RAYS can burn, Operation

B-11 OPERATION B-11

Semi-automatic, MIG Welding With a Lincoln Weld Pak 100 or Weld Pak 125

WARNING

ARC RAYS can burn.

• When using an open arc process, it is necessary to use correct eye, head and body protection.

The Power-Arc generator power can be used to supply power to a Lincoln Weld-Pak 100 or Weld-Pak 125 wire feed welder. The Weld-Pak is equipped with all the supplies needed for Flux-Cored Arc Welding (FCAW), and is available where Lincoln products are sold.

A K610-1 MIG Conversion Kit is also available for the Weld-Pak which provides all the essentials needed for Gas Metal Arc Welding, GMAW, or MIG processes. Contact your local authorized Lincoln representative for more details.

Stick Welding

Stick welding is probably the most familiar welding process known. A coated ELECTRODE, the weld rod, is clamped into an ELECTRODE HOLDER, an insulated clamping device, which in turn connects to the ELECTRODE CABLE, a heavy wire. The WORK, the metal piece to be welded, is connected to the WORK CABLE, a heavy wire which contains the WORK CLAMP. Quality Lincoln cables use many fine copper wires with a very flexible insulating covering for the electrode and work cables. When properly con- nected to the OUTPUT STUDS of a high current power source, the electrode melts and bonds the metal being repaired. Refer to Figure 3 to see the cir- cuit. See “Cable Installation” section for proper cable connection to a Power-Arc.

The Power-Arc provides excellent weld output charac- teristics when used in combination with Lincoln AC electrodes. Other AC electrodes may also be used.

Follow the settings listed in Table 2 “Welding Application Chart” and the “Electrode Selection Guide” found on the nameplate of the machine.

Learning To Stick Weld

The serviceability of a product or structure utiliz- ing this type of information is and must be the sole responsibility of the builder/user. Many vari- ables beyond the control of The Lincoln Electric Company affect the results obtained in applying this type of information. These variables include, but are not limited to, welding procedure, plate chemistry and temperature, weldment design, fab- rication methods and service requirements.

No one can learn to weld simply by reading about it. Skill comes only with practice. The following pages will help the inexperienced welder understand welding and develop his skill. For more detailed information, order a copy of the book “New Lessons in Arc Welding.” (See Book Division section at rear of manual).

The operator’s knowledge of arc welding must go beyond the arc itself. He must know how to control the arc, and this requires a knowledge of the welding cir- cuit and the equipment that provides the electric cur- rent used in the arc. Figure 3 is a diagram of the weld- ing circuit. The circuit begins where the electrode cable is attached to the welding machine and ends where the work cable cable is attached to the machine. Current flows through the electrode cable to the electrode holder, through the electrode holder to the electrode and across the arc. On the work side of the arc, the current flows through base metal to the work cable and back to the welding machine. The cir- cuit must be complete for the current to flow. To weld, the work clamp must be tightly connected to clean base metal. Remove paint, rust,etc. as necessary to get a good connection. Connect the work clamp as close as possible to the area you wish to weld. Avoid allowing the welding circuit to pass through hinges, bearings, electronic components or similar devices that can be damaged.

POWER-ARC 4000