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Features of Welding Consumables

11/8/2012 6:21:26 PM | by Anonymous

Features-of-Welding-Consumables

Welding is the process of joining two materials, more commonly metals, together. Among the welding techniques, arc welding, also known as stick welding, is the most typical because of its versatility. This occurs by creating electric rod from welding consumables to the base being welded. Types of welding consumables include covered electrodes, solid wires, and strips and fluxes to name a few. Generally, all the welding consumables mentioned function as electrodes. In arc welding, an electrode is a conductor that works when an electric current travel through it and strike to the material to be welded. Electrodes, or referred to as welding rods in the field of welding, are usually made from metal substances such as silver, zinc, lead or copper. Welding rods, in arc welding, are made of steel and wrapped with a flux. Wrapping the steel with flux helps prevent the material to be welded from oxidation as well as from contamination throughout the welding procedure by releasing carbon dioxide (CO2). Common electrodes are known to be only capable of welding ferrous metal. However, special electrodes are built that can be used on welding of metals such as nickel, aluminium, cast iron and copper.

 

The reason why welding rods are also called as welding consumables is because it gets short while being used. As explained earlier, electrodes or welding rods serve as a conductor where heat generates melting the steel rod. The rod should be welded in the middle of the two objects to be joined. Once the molten steel cooled down, a permanent bond will be created as the steel made the materials like a single object. To bring more effectiveness on the functionality of the rod, the base steel is wrapped with flux, a chemical cleaning agent that could give more strength and firmness to it. It also allows the rod to gradually melt in a uniform way resulting to a more durable bond between objects. Different sizes of welding rods are produced so there will be one suitable for various applications and industries. These rods generally vary according to their width. For thick objects, thicker rods are more apt to use but a suitable welding machine should also be used with it.

 

With a little training, anyone can perform arc welding making it suitable for home use. In spite of the common notion that welding can only be done by professionals, arc welding can be possibly done easily by amateurs and anywhere a person wishes to do it since the cost of this equipment is relatively cheap. Depending on the frequency of use and the type of welding job a person does, the user can gain enough knowledge and skill and be an expert on this field. Since welding rods are eaten from every use, frequent replacing of the consumable rod is a normal scenario for welders. This also causes for this activity to be considered time-consuming. The common applications of arc welding can be in the steel building construction. Steel usually comes in a huge single object when bought. In order to form them on a shape required in construction, welding has to be applied on several steel for them to join. Even though soldering and brazing also involve melting of metal to stick materials together, the rate of heat and melting point generated on these processes are not enough to create a permanent bond between objects as compared to welding. One does not need to have proper training in order to perform welding. However, one should still be cautious of the hazards one can encounter as bits of molten welding consumables can cause burns if got in contact with the skin.

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