Table of Contents
What is a cellulosic welding rod?
Cellulosic electrodes are covered electrodes where the covering is comprised of a high amount of cellulose. These types of electrodes are used primarily in stick metal arc welding and are favorites among welders because of their high level of penetration, accuracy, and their high endurance and long functional life.
What is a basic electrode?
Basic electrodes offer an arc with medium penetration and excellent mechanical properties. The coating is low-hydrogen iron powder, TiO2, CaCO3, and CaF2 (calcium fluoride). The coating is of medium thickness, and the addition of iron powder increases deposition.
What are cellulose welding rods used for?
Cellulose electrodes are used for vertical-down welding, and especially for circumferential welds on pipelines. Cellulose ensures that a significant amount of material is molten during welding and a high penetration is achieved. Besides pure cellulose electrodes, mixed types also exist.
What is the difference between basic and rutile electrodes?
Rutile flux wires are more “welder friendly” than basic flux wires. Basic flux wires are used primarily when the goal is to achieve excellent weld metal mechanical properties. Basic flux wires produce welds with good low-temperature impact toughness, even down to extreme temperatures like -100°C.
Which electrode is used for basic welding?
Common electrodes used in Stick welding are 6010, 6011, 6013, 7018 and 7024 with the most common diameters ranging from 1/8- to 5/32-in. Each of these electrodes offers all-position welding capabilities (except 7024).
Which electrode has a cellulose coating?
With a high proportion of titanium dioxide (also called titania) the rutile electrode gives a smooth bead surface, easily removal slag and a smooth arc. During the combustion, the flux coating will mainly create carbon dioxide. This flux also contains cellulose.
What SMAW Rod is a cellulose covered electrode?
Covered Electrodes for SMAW of Carbon Steel
| Stick Welding | Covered Electrodes for SMAW of Carbon Steel per AWS A5.1 Arc-Welding Processes – SMAW | |
|---|---|---|
| Classification | Covering | Weld Position |
| E6010 | High-cellulose sodium | F, V, O, H |
| E6011 | High-cellulose potassium | F, V, O, H |
| E6012 | High-titania sodium | F, V, O, H |
What is a basic welding rod?
Basic welding electrodes contain a high proportion of calcium carbonate (limestone) and calcium fluoride (fluorspar) in the coating. This makes their slag coating more fluid than rutile coatings – this is also fast-freezing which assists welding in the vertical and overhead position.
What is the difference between bare and shielded electrodes?
Shielded arc electrodes minimize sulfur, oxides, and other types of impurities within the base metal to give regular, smooth, and clean welds. These coated electrodes also produce a more stable electric arc compared to bare electrodes, which makes welding more manageable and reduces spattering.
What is the basic component of cellulose?
Cellulose is a molecule, consisting of hundreds – and sometimes even thousands – of carbon, hydrogen and oxygen atoms.