What is the difference between basic and cellulose electrode?
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A 7018 rod uses a basic lime coating, which needs to have virtually no moisture in it, and is kept sealed until use then transferred to a rod oven to keep moisture away until use. this is because 7018 is designed to be a low hydrogen electrode, to prevent internal hydrogen cracking in the weld. It produces a smooth, fluid, and easily controlled weld puddle and is well suited for all positions, but has relativey shallow penetration.
A cellulose based rod such as 6010 is the opposite, and needs a 3–8% moisture content in the coating to run properly, without it the arc can become unstable and causes “"finger nailing” where the coating burns unevenly and pushes the arc to the side, top, or bottom of the puddle randomly. 6010 has high penetration, but lacks in deposition rate and fluidity, the rod is typically “whipped” or stepped forward and backward to produce more build up and a better looking weld.
A cellulose based rod such as 6010 is the opposite, and needs a 3–8% moisture content in the coating to run properly, without it the arc can become unstable and causes “"finger nailing” where the coating burns unevenly and pushes the arc to the side, top, or bottom of the puddle randomly. 6010 has high penetration, but lacks in deposition rate and fluidity, the rod is typically “whipped” or stepped forward and backward to produce more build up and a better looking weld.
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