Understanding Arc Welding Shade Number
Arc welding is one of the most widely used welding processes. It is a process that uses an electric current to create an electric arc between a metal electrode and the materials being welded. The heat of the arc melts the metal and forms a strong bond between the two pieces of metal.
When arc welding, it is important to understand the different shade numbers used in the process. Shade numbers are used to determine the level of protection a welder needs from the ultraviolet radiation produced by the welding arc. The shade number is an indication of the level of protection needed for the welder’s eyes and skin.
The shade number used for arc welding is determined by the type of welding process being used. For example, if you are using a gas metal arc welding (GMAW) process, then the shade number should be set at 7 or 8. If you are using a shielded metal arc welding (SMAW) process, then the shade number should be set at 10 or 11.
The shade number is important for several reasons. First, it helps ensure that the welder is properly protected from the harmful ultraviolet radiation of the welding arc. Second, it helps ensure that the weld joint is properly shielded from the welding arc.
When setting the shade number for an arc welding process, it is important to consider the type of welding process, the size of the weld joint, and the type of metal being welded. For example, if you are welding a larger joint, then you may need to set the shade number higher than if you are welding a smaller joint.
The shade number is also important for the quality of the weld. If the shade number is too low, then the weld joint may not be properly shielded from the welding arc and the weld may not be of good quality. If the shade number is too high, then the welder may be exposed to too much ultraviolet radiation and could be at risk of eye and skin damage.
In summary, when arc welding, it is important to understand the shade number that is required for the welding process. The shade number is an indication of the level of protection needed for the welder’s eyes and skin and helps to ensure that the weld joint is properly shielded from the welding arc. By understanding the shade number and setting it appropriately, you can ensure that the weld is of good quality and that the welder is properly protected.