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Forge welding is the oldest known welding process which has been practiced for centuries. The procedure is still used even though its application is limited because of the certain complexity connected with it.

Metals which can be Forge Welded:
Wrought iron and low carbon steels (with C content less than 0.2%) can be acceptable forge welded. Forge welding can be accepted out with metal thicknesses up to about 30 mm.

Surface Preparation:
Surfaces of the metal parts to be forge welded are prepared by upsetting the pieces at the ends. A variety of edge preparations necessary to be carried out previous to forge welding.

Procedure for Forge welding:
The parts to be forge welded are given an edge (or joint) preparation as clarified above. Then, the parts are heated to over l000°C until they are plastic. In this state, the parts are positioned on the anvil end to end and are hammered jointly, either using a power hammer or physically, until they form a solid structure of metal.

In forge welding process, a very significant requirement is that during heating the absorption of sulphur from the coke of the fire and scaling of the pieces (to be welded) ought to be prevented or that if scale is created, the hammering should be completed in such a way as to squeeze this out of the joint and allow metal to metal contact. Besides being combined by blows from a hammer, the work¬ pieces may also be welded by being rolled, drawn or squeezed together.

Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines

Following are the major pointers for learn how to tig welds overhead using the walk the cup method…

1. Enlarge the electrode far sufficient to have the correct torch angle.

2. Maintain the electrode sharp and if it gets crapped up, sharpen it or exchange to a sharp one.

3. A flex head welding torch assists for getting the torch body far sufficient away from the hot metal.

4. Maintain a tight arc…concerning same as electrode diameter used or tighter.

5. For welds on thicker metal, use several passes.

6. The lay wire method is popular, but dipping the rod is better for ensuring diffusion in the root pass.

7. If you dip, maintain the hot tip of the rod shielded with the argon as of the tig cup.

8. A gas lens works extremely well but is not forever essential.

Welders:Plasma Cutter:Arc welder:Mig Welder:Tig Welder:Diesel Generator:Cutting Machines