1 FeC-1 This electrode is a gray cast iron rod for gas welding wire and hand arc welding. The welding rod may also be covered with a thin layer of flux. The weld material is gray cast iron. The mechanical properties of the weld metal depend on the thermal control during welding. By preheating above 400 ºC, the weld metal can be machined. It is mainly used to weld gray cast iron (GG).
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2.1.2 FeC-2
This type of welding wire is flux coated welding wire. and electric wire The wire core or sleeve is non-alloyed steel. The flux is mainly composed of carbon and silicon. to obtain a weld texture of gray cast iron Its application is the same as FeC-1 electrode.
2.1.3 FEC-G
This type of welding wire has the form of flux-cored welding wire. and flux cored wire When heated above 400 °C, the welding material is nodular graphite cast iron, the core of the welding wire is nodular cast iron or steel. The cladding flux contains various elements such as carbon, silicon and other elements. so that the welding content is nodular graphite cast iron For flux-filled wire, the outer sheath is steel and the filling is alloyed flux.
Applications : Generally used to weld nodular cast iron and black ductile cast iron (GTS).
2.2 Welding electrodes according to type of chemical composition
2.2.1 Fe-1
This type of electrode is a flux covered electrode. Basic Lime-Fluorspar non-alloy steel wire core. Suitable for welding white ductile cast iron and for overlapping reinforcement on cast iron. Although the base welding with different filler metals
2.2.2 Fe-2
this type of welding wire These include flux-coated electrodes and flux-filled electrodes. The wire core or outer sheath is non-alloyed steel. The flux or flux filling is a special carbide (Carbine-Forming Element).
Application : welding of gray cast iron or nodular graphite cast iron
2.3 Nickel welding wire
2.3.1 Ni
This type of welding wire Including flux-coated electrodes and flux-filled electrodes The welding wire core or outer sheath is pure nickel. For flux or flux filling contains essential elements. Graphite that prevents pitting and hot cracking. When graphite is embedded in it, it causes low strength. The positive effect of low weld strength It helps the welding material to stretch well. By doing stress relief by using a hammer. This electrode is suitable for welding complex shapes of gray cast iron. without preheating
2.3.2 NiFe-1
This type of welding wire is available as flux-coated electric welding wire. filament electrodes and flux electrodes This type of electrode contains carbon as needed. To avoid porosity and hot cracking of weld metal. Fluxes and fluxes contain graphite. The weld strength is higher than that of Ni-type electrodes. Peening of the residual stress is possible only when the work is still hot enough. For solid wire electrodes, the welding material only obtains carbon by melting it with the workpiece. NiFe-1 electrodes are suitable for sickle or submerged arc welding. As for multi-line welding, it can be done. Each weld must be in contact with the workpiece.
Applications : Used for welding nodular cast iron, ductile black cast iron (GTS), and can also be used for welding between cast iron and steel.
Preheating is generally not performed.
2.3.3 NiFe-2
This type of electrode prevents pitting and hot cracking. by adding manganese and niobium Weld content has high strength and can withstand severe karmic loads.
Applications : Multi-line welding on nodular cast iron and ductile black cast iron (GTS).
2.3.4 NiCu
This type of welding wire includes both flux-covered electrodes and flux-filled electrodes. Carbon is mixed in the necessary amount to prevent pitting and hot cracking. High strength and high elongation weld texture
Application : Used for welding foundation, overlapping large gray cast iron, nodular graphite cast iron (GGG) and ductile black cast iron.
2.4 Copper alloy welding wire
2.4.1 CuA1.1 and CuA1-2
Copper-aluminum alloy welding wire, including flux-coated welding wire Solid electrodes and flux electrodes, in addition to copper-aluminum alloys. There are other elements as well, such as manganese, nickel and iron. However, the alloyed iron content should not exceed 3%, the iron content will increase further from the melting of the work piece to the first weld. While the weld texture has high strength, high elongation rate and high corrosion resistance.
Application : Used for joining two materials and joining cast iron and gray cast iron.
2.4.2 CuSn
main application Same as CuA1-1 and CuA1-2 welding electrodes, but lower strength than copper-aluminum welding electrodes. In general, CuSn electrodes have bearing properties. The main applications are welding of bearings, slipping parts and seals on gray cast iron.
3. Wire symbol
The welding wire symbol consists of the following:
1) Name of welding wire such as Gas Welding Filler Rod, Electrode, Wire Electrode, Filler Wire or Cored Wire Electrode.
2) DIN number
3) Properties of relevant welding electrodes
3.1 Representing properties
3.1.1 Welding Process Symbols
G = gas welding
E = Manual electric arc welding
WSG = TIG Welding (GTAW)
MSG = Mig Weld (GMAW)
MF = flux filament welding
3.1.2 Symbol for alloy type or chemical mixture
3.1.3 Flux Type Symbol
B = alkaline
G = Graphite
BG = Alkali + Graphite
S = special type Dai
These include organic salts, cellulose, sodium compounds, ferrofluids and slag elements.
3.1.4 Welding Port Number Code
3.1.5 Numeric codes and symbols for stream names
symbol example
4.1 Gas welding electrodes
Welding electrodes FeC-1 Welding electrodes for gas welding (G)
Gas Welding Filler Rod DIN 8573-GFeC-1
