There are seven fundamental factors in the selection of electrodes for Inconel 600 Plate welding:

• Base metal identification


• Type of current available for welding, that is, if alternating or continuous current is counted for the operation


• Position in which welding should be performed


• Thickness and shape of base metal


• Board design


• Specifications or service conditions required for the job


• Efficiency and speed required in the operation

Once the electrode is chosen according to the previous bases, it is necessary to select the current (amperage) with which it will work according to its diameter. If the operating current is direct or continuous, the polarity recommended by the manufacturer for that electrode should be used in order to obtain better results. Although the different types of electrodes, for various applications have different operating characteristics, there are some implicit general rules that apply without exception to all types of coated electrodes.

The Hastelloy C276 Round Bar, for example, should always be kept as short as possible but without allowing the electrode coating to touch the pool of molten metal. The advance of the arc must be in accordance with the diameter of the electrode used. The oscillation of the arc should be generally short, not more than four times the diameter of the electrode. When the force must be greater, the speed of the swing must be as low as possible.

The purpose of the foregoing is to prevent the electrode and the Hastelloy C276 Plate being deposited from leaving the atmosphere of the protective gas generated by the coating. The slag as the main function cleans the deposited metal of impurity and helps give the cord its external shape and appearance. At the same time and according to its solidification point, it allows the deposited metal to be held in vertical and overhead positions. Consequently it is important not to remove the slag, until it has cooled down and completely solidified.

Electrode welding of Inconel 600 Round Bar is a broad field, since there are different materials designed for various jobs. So electrode welders attend electrode welding courses to know their classification and to know how and where to use them. There is an international standard that indicates the type of electrode to be used, making it easier to find the one for the job and they are the following:

Cellulosic Electrodes: They are named for the high concentration of cellulose found in their coating; and have the following characteristics:

• Fast solidification


• Excellent performance and resistance


• Elasticity


• Ductility


• Maximum penetration

Rutile Electrodes: Known in this way due to its large amount of rutile (titanium oxide) contained in its coating; and has the following characteristics:

• Soft bow


• Good presentation


• Good resistance


• Penetration that goes from medium to low

Mineral Electrodes: It is called mineral electrodes due to the main components of its coating that are iron and manganese oxides; and its characteristics are the following:

• Good mechanical properties


• Good appearance of the deposit


• Good penetration


• High deposition rate