7/20/2020 Stick electrodes | Böhler Welding https://www.voestalpine.com/welding/Brands/Boehler-Welding/Stick-electrodes#!industry-tables#!industry-table-section-id-12317=paging:number=50|… 1/20 voestalpine Böhler Welding » » » » » Stick electrodes A modern world would be unimaginable without electric arc welding - it is one of the oldest processes for joining metals and used all over the world. It is generally known as MMA (manual metal arc welding). Electric arc welding with stick electrodes is still indispensable in steel and pipeline construction and can be used under all weather conditions. Today, around 25 to 30% of the world's welded products are produced with this process. EN
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Böhler Welding - Stick electrodes - Al Sultan Co |
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ProcessFor electric arc welding with stick electrodes, an electric arc is generatedbetween the stick electrode and the base material. In shielded metal arcwelding (SMAW) or manual metal arc welding (MMA) using coated stickelectrodes, the coating forms a protective gas shield and a slag, therebyprotecting the transferred metal droplets and the weld metal againstcontact with atmospheric oxygen.
Further functions of the coating are de-oxidation of the weld metal,increasing the metal recovery, compensating for burn-off and ensuringgood we�ing behaviour. In practical use there are three significant types ofcoating: rutile, basic and cellulosic and mixtures of these.
Electric arc welding with stick electrodes is one of the oldest andmost versatile welding processes. And it is also considered as one ofthe simplest and safest methods. It is used to weld almost all types ofmetals. Stick electrodes are even used for underwater welding.
Coating typesAccording to the European Norm DIN EN ISO 2560, there are a total ofeight different types of coated stick electrodes for arc welding of unalloyedsteels and fine-grained steel. The four main types are named a�er theirmain components:
» C (Cellulose) cellulose electrodes
» A (Acid) acid electrodes*
» R (Rutile) rutile electrodes
» B (Basic) basic electrodes
*Acid electrodes can hardly be found anymore and have been almost completelyreplaced by rutile electrodes.
These coating types are a very important differentiator for the unalloyedstick electrodes. Stick electrodes for high strength, creep resistant or high-alloyed steels according to the other EN standards are mostly coated withrutile or basic coating elements.
Cellulose-coated stick electrodes
Due to the high level of cellulose in the coating, they have excellentproperties for out-of-position welding, but poor properties for horizontalwelding. They are therefore mainly used for vertical-down welding on largepipes.
Rutile-coated stick electrodes
These electrodes are very popular due to their good welding properties.The welding arc is stable and calm and is easy to reignite, the seams arefinely rippled, and most of the slag comes off by itself. Rutile-coatedelectrodes have sufficient toughness properties, but are only suitable forout-of-position welding to a limited extent (high-alloy). BÖHLER electrodesfor under water welding are a special type namely rutile acid (RA). Theyhave a special sealing to protect against the water.
Basic-coated stick electrodes
The main advantages of basic electrodes are the outstanding toughnessproperties of the weld metal and its resistance to hot and cold cracks.Basic-coated electrodes have a coarse droplet material transfer, can beused to weld in all positions and have somewhat coarsely rippled seams.The slag can be relatively easily removed, but not as easily as with rutile-coated electrodes.
Find here useful information about applications of stick electrodes.
DRY SYSTEMBöhler Welding DRY SYSTEM is the efficient alternative for costly climatecontrolled storage and handling procedure, providing “oven dry” stickelectrodes straight from the vacuum packaging. Böhler Welding DRYSYSTEM avoids the necessity of re-drying, and use of holding ovens andquivers in welding applications with a potential risk of hydrogen induced orhydrogen assisted cracking. Safe welding with low-hydrogen weld metal isassured up to nine hours a�er opening the vacuum pack.
LINK
BÖHLER FOX EAS 2-A Stainless Steels Rutile Coating
Stick electrodes ensure easy and flexible handling without gases andsimple power sources. Böhler Welding DRY SYSTEM vacuum packagestogether with user friendly packaging sizes offer optimal packagingcontent in industries where stick electrodes are of high priority.
DRY SYSTEM user benefits
» Guarantee of low-hydrogen weld metal - an important prerequisite in
the prevention of hydrogen cracks
» Avoidance of costly climate controlled storage and handling and re-
drying. Simple distribution to welders
» Possibility to check whether electrodes are within 9 hours of safe
exposure
» Content can be chosen to match fabricator or industry specific
consumption
» Can be disposed with normal paper and metal waste
Using a strong foil made of multi-layered aluminium, the new BöhlerWelding DRY SYSTEM offers maximum safety against loss of vacuum
Böhler Welding DRY SYSTEM for best in classproducts
due to the undesired penetration of sharp objects during storageand use. Welders will see immediately if the electrodes are still ovendry. With the vacuum in place, electrodes are ready to use. The packscan be stocked in any dry place where the packaging cannot getdamaged. DRY SYSTEM is environmentally-friendly. No plastic in theform of PE or PP boxes is used at all.
LIN
BÖHLER FOX EV 50 Un-alloyed E7018-1H4 R
E 42 5 B 4 2H5
BÖHLER FOX EV 50-W Un-alloyed E7016-1H4 R
E 42 5 B 1 2H5
Phoenix 120 K Un-alloyed E7018-1 E 42 5 B 3 2H5
Phoenix Spezial D Un-alloyed E7016 E 42 3 B 1 2H10
BÖHLER FOX EV 60 High strength E8018-C3 H4 R
E 46 6 1Ni B4 2 H5
Phoenix SH V1 High strength E8018-G
E 50 6 Mn1NiB 4 2 H5
BÖHLER FOX EV 63 High strength E8018-G H4 R
E 50 4 B 4 2H5
BÖHLER FOX EV 65 High strength E8018-G H4 RE8018-D1 H4 R(mod.)
ClassificationMost welding consumables are classified in accordance with an EN ISOand AWS standard. There are a number of different EN ISO standards thatapply for different areas:
BÖHLER FOX 2,5 NiFactsheet (English (American) | 279.19 kB)
PHOENIX SH SCHWARZ 3Factsheet (English (American) | 270.51 kB)
BÖHLER FOX EV PIPEFactsheet (English (American) | 307.77 kB)
BÖHLER FOX NiCuCrFactsheet (English (American) | 268.60 kB)
BÖHLER FOX P 22 / BÖHLER FOX P 22 (LC)Factsheet (English (American) | 277.76 kB)
BÖHLER FOX OHVFactsheet (English (American) | 291.32 kB)
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