Welding Procedure: To Initiate and Complete Your Job Easily

  • Assembling the torch: Choose the appropriate diameter electrode by consulting the apparatus manual. It is very essential to appropriately prepare the electrode tip in order to get a good weld. If DC welding is to be performed, the tip must be sharpened just like a pencil. On the sander, hold the electrode at about a 20 degree angle to the sander face, and rotate the electrode until a sharp point is formed. For AC welding, a rounded, conical tip is a must. In case to sharpen the electrode for AC welding, and then first sharpen it as would do for DC welding. Select a same size collect as of your electrode. Often, collects are not in their proper bins, so double –check is essential to see that it slides smoothly around the electrode. Pick a cup with a proper orifice diameter to match with the electrode. Tighten the lens into the back of the torch. Then screw the electrode cap on the back of the torch, then, cover the back of the electrode and lock the place. The electrode should be between 1/8 or ¼ th of an inch out of the front of the torch. Loosen the cap if it sticks too far out, and adjust it until it is placed in the appropriate position.
  • Setting the workpiece: One must be ensured about the proper flow of electricity out of the workpiece to ground. First, securely clamp the grounding cable to the welding table. Secondly, place the table in a way such that there is a direct contact between the workpiece and the cable.
  •  Turning on the Device: Formerly, check that the cooling water valve to the right of the welding machine is opened fully. Then flip the main switch on the front of the welding machine to the ON position. Then, turn on the regular valve that is placed on the top of the argon tank. It is a “double seating” valve which must be opened all the way in order to appropriate seal. Often, it is a good idea to check that both the argon and the water are flowing smoothly. In order to do this, hold the torch in one hand so that it does not comes into contact with any metal and press down on the foot controller. This must initiate both argon and water flow. On the 300, you can look out the window behind the machine to check that the water is exiting the machine through the disposal tube. Also check the flow meter on the argon regulator to see that the argon is flowing at the proper level. Do the adjustments if essential.


  • Joint Arrangement: A sheer cleaning of the metal is essential to produce a solid joint. This is essential to be done with aluminum, where pieces to be welded must always be kept clean, free from all corrosion and dirt. Steel can be left as it is unless the pieces are very much corroded. Fix the pieces to be welded in a fashion that allows for a proper current flow between the workpiece and the table. Pieces usually do not have to be clamped together but they should be well supported.
  • Security: The arc produced in the TIG welding releases very dangerous UV radiation. Even if have to catch a glimpse of the arc with eye without wearing any helmet, can have a headache the very next day. The welder is a sole responsible for security of himself and the safety of others. First, set up the orange screens around the two edges of the welding table, facing the rest of the room. These are essential for protecting others. Next, ensure that there is no exposure of body skin of the welder. Use the TIG welding gloves to secure one’s hands and be sure that one is wearing only natural fabrics, as synthetics could melt if expose to sparks from the welding. It is also a good idea to wear a turtle neck buttoned in order to be sure that one’s neck is not exposed. Next, wear an arc-welding helmet. Place it in the upright position on your head until you actually weld. The one with the large smoked glass plate in the front provides the better field of vision than the others with smaller plates. The darkness of the plate is rated between 1 to 15. Be sure that the glass in your helmet is 11 or over.
  • Preparing to Weld: Place yourself with the properly fixture workpiece in front of you at the welding table. Keep the foot controller in front of your chair so it can be controlled comfortably with your foot. Hold the properly assembled torch in the hand that you write with. Hold a piece of filler rod if intent to use it.
  • Initiating the Arc: As the welding machine possesses a high frequency start current, it is essential to make contact with the workpiece in order to initiate the arc. Therefore, place the torch at the point where you like to commence the weld about with the tip of the electrode about 1/8’’ of the workpiece. Then lower the visor on the welding helmet. You will unable to see anything until the arc has started. Press down nearly all the way on the foot switch and arc should start. If it does not initiate slowly bring the electrode tip closer to the workpiece until the arc forms. Never make contact with the workpiece as this can melt the electrode! The light of the arc should be as small area around the torch so that you can see. A common problem is to have the torch stray away from the intended starting position when the visor is lowered. A good trick in avoiding this is to actually touch the electrode to the intended starting point on the workpiece before lowering the visor. This will usually anchor the electrode enough so that it will not move when the visor is lowered. Then, bring the electrode slightly off the workpiece but keep it within 1/8” so that the arc will still start. Then press down on the foot controller to start the arc.

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