Run The Root Pass

Extra care should be taken when running the root pass because If the root pass has good fusion and is water tight, the rest of the welding is just formality especially when welding pipe. Make sure the joint is good and hot and you are comfortable during the HF Welding Companies. Comfort means control.

Run The Fill Passes

I dub this part "Mindless Welding" because you burn rod after rod until you complete the passes. I run the welds in steps starting with the root pass, the intermediate fill passes and the final fill. As you step up the welds, pay particular attention to tying in the sides, this is the strength of your welding.

The "Cap" passes are where you let your skills shine. They can be as few as one or as many as it will take to cover the filled joint you just welded. This is your signature so take your time and get them straight and the proper height. The grand finale' of this episode is to turn the plate over, grind out the root opening down to flawless metal, preheat the steel plate, fill the joint and run the caps, you're done.

This simple procedure for using your Buzz Box is the basics of all welding. Welders in many welding careers performing many welding services and welding jobs use these techniques. They produce quality welds consistently with welding wire or welding electrodes and you can too.

Aircraft repair and fabrication of structural components and high temperature components like exhaust systems and ducting components often calls for NADCAP approved welding.

Gas welding

A fuel gas such as acetylene or hydrogen is mixed inside a welding torch with oxygen to produce a flame with a temperature of around 6,300 degrees F. (3,482 degrees C). This flame is used to melt the materials to be welded. A filler rod is melted into the puddle of molten metal to reinforce the weld. When highly-reactive metals such as aluminum are gas welded, they must be covered with flux to exclude oxygen from the molten metal and keep oxides from forming which would decrease the strength of the weld.

Shielded Metal Arc Welding (SMAW).

This method is the most familiar and common type and is known in the trade as stick welding. A metal wire rod coated with a welding flux is clamped in an electrode holder connected to the power supply with a heavy electrical cable. The metal to be welded is also attached to the power supply. The electrical power is supplied to the work at a low voltage and high current and may be either AC or DC, depending upon the type of welding being done. An arc is struck between the rod and the work and produces heat in excess of 10,000 °F, which melts both the material and the rod. As the flux melts, it releases an inert gas which shields the molten puddle from oxygen in the air and prevents oxidation. The molten flux covers the weld and hardens to an airtight slag cover that protects the weld bead as it cools. This slag must be chipped off to examine the weld.

Gas Metal HF Welding Machine  (GMAW).

This method of welding was formerly called Metal Inert Gas (MIG) welding and is an improvement over stick welding because an uncoated wire electrode is fed into the torch and an inert gas such as argon, helium, or carbon dioxide flows out around the wire to protect the puddle from oxygen. The power supply connects between the torch and the work, and the arc produces the intense heat needed to melt the work and the electrode. Low-voltage highcurrent DC is used almost exclusively with GMAW welding. GMAW is used more for large-volume production work than for aircraft repair.