subject: Choose Welding Electrodes For The Best Results In Welding Job [print this page] Choose Welding Electrodes For The Best Results In Welding Job
As any welding professional will tell you, welding electrodes are perhaps amongst the most important ingredients in a welding process. Welding electrodes are actually metal wires with chemical coatings baked on to their surface. Welding electrodes are primarily used in arc welding. The welder places welding electrodes on the material to be welded, and an electric arc forms between it and the welding electrode. The heat this generates welds the metal. The strength of the welding electrode contributes to the overall strength of the weld, along with other factors, such as the width and length of the weld.
There are several kinds of welding electrodes and you will need to choose the right welding electrodes for best results in your welding job. Your choice of welding electrode should be based on the type of base metal being used, the process of welding and apparatus and other conditions. You should objectively consider the base metal being used, the type of joint or weld needed to be produced and if more filler or more weld penetration might be required for a good weld before you decide upon the welding electrodes to use.
The various types of welding electrodes that you can choose from for your welding job include copper and alloy welding electrodes, aluminium welding electrodes, carbon resistance heating electrodes, furnace electrodes, coated titanium welding electrodes, tungsten welding electrodes.
To be able to choose the right welding electrodes for a particular welding job is crucial to a welding job that can be said to be done well. A wrong choice in choosing welding electrodes can lead to difficulty in starting the arc and even result in weakening the weld or over melting the metal being welded due to generation of less or excessive heat than what is actually required.
You must also ensure that your welding electrodes are absolutely dry before using them for a welding job as moisture can actually reduce the desirable characteristics of the coating and may cause extreme spattering and lead to the formation of cracks and weakness in the welded area. Welding electrodes exposed to humid air for more than a few hours should be preheated before use. In case you are not sure about how long the welding electrodes were actually exposed to humidity, they should be dried by heating in a suitable oven. After the welding electrodes have dried, they should be stored in a moisture proof container for future welding jobs.
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