Covered Electrode

According to different situations, there are three classification methods for welding rods: classification according to the purpose of the welding rod, classification according to the main chemical composition of the coating, and classification according to the characteristics of the slag after the coating is melted.

• According to the use of welding rods, there are two forms of expression. One is compiled by the former Ministry of Machinery Industry. Welding rods can be divided into: structural steel welding rods, heat-resistant steel welding rods, stainless steel welding rods, cladding welding rods, low-temperature steel welding rods, Cast iron welding rods, nickel and nickel alloy welding rods, copper and copper alloy welding rods, aluminum and aluminum alloy welding rods and special purpose welding rods. The second is the national standard, which is carbon steel electrodes, low alloy electrodes, stainless steel electrodes, cladding electrodes, cast iron electrodes, copper and copper alloy electrodes, aluminum and aluminum alloy electrodes. There is no principle difference between the two. The former is represented by a commercial brand, and the latter is represented by a model.

• According to the main chemical composition of the electrode coating, welding electrodes can be divided into: titanium oxide type electrodes, calcium titanium oxide type electrodes, ilmenite type electrodes, iron oxide type electrodes, cellulose type electrodes, low hydrogen type Welding rods, graphite welding rods and salt-based welding rods.
• According to the characteristics of the slag after the electrode coating is melted, welding electrodes can be divided into acidic electrodes and alkaline electrodes. The main components of acidic electrode coating are acid oxides, such as silica, titanium dioxide, ferric oxide, etc. The main components of alkaline electrode coating are alkaline oxides, such as marble, fluorite, etc.

There are many ways to classify welding rods. Welding rods can be classified from different angles such as their uses, the alkalinity of the slag, the main components of the electrode coating, and the performance characteristics of the welding rods.

Test Item	Rm(MPa)	ReL(Mpa)	A(%)	KV2(J)	KV2(J)
Guarantee value	≥420	≥330	≥17	-(normal temperature)	-(0°C)
General result	460~540	≥340	18~26	50~80	≥47

Classification by Covered Electrode properties

They are all special welding rods manufactured based on their special performance, such as ultra-low hydrogen welding rods, low dust and low toxicity welding rods, vertical downward welding rods, lying welding rods, bottom layer welding rods, high-efficiency iron powder welding rods, moisture-proof welding rods, underwater welding rods, Gravity welding rods, etc.

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Eternal Bliss Alloy Casting & Forging Co, Ltd.

Caesar

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