This standard specifies filament welding wire, welding wire used for gas welding process. and TIG welding For bare electrodes used for MIG welding. flux coated welding electrodes used with electric welding (SMAW)
udo.co.th The equipment center, grinding machines, grinding wheels and various tools for welding work of all kinds. We have a team of highly experienced professionals to give advice and consultation to all customers.
1. Classification of welding wire
(1) Bare welding electrodes are classified according to the chemical composition specified by the manufacturer.
(2) Flux-Covered Electrodes Divided according to the chemical composition of the weld
welding wire symbol
E = Electrode (electrode)
R = Rod (Welding rod) used for gas welding and TIG welding processes.
ER = Rod and Electrode can be used for Mig welding and under flux welding processes. For the letters after ER or ER, it means an important alloying element, for example:
CoC is a Cobalt-Ksyrium alloy.
CuZn is a copper-zinc alloy.
Sub-grouping of major alloying elements is followed by a letter such as A, B, C, etc. after the element group.
important, including ECuSn-A, if wanting to subdivide further after the letters A,B,C will be followed by numbers, namely ECuAl-A2
1) Tanz Res nas EFeS High Speed Steel
R15 is a cold Rod and ites is an electrode. which is a welding wire that is commonly used when It requires hardness at high temperatures up to 595 °C, good wear resistance and toughness. This metal was originally Thigh-Speed Steel.
There are 3 types of original metals, Fe5-A and Fe5-1, which have high carbon alloys that are suitable for
For cutting and machining applications, the Eyes type has carbon to be used for forming applications.
hot and need toughness
implementation cutting tools, cutting blades, reamers, forming dies, cutting dies, and
2) Original metal EFC Mini Austenitic Manganese Electrodes There are 2 types of this original metal. HFe Mn-1 has a higher stress than the weld metal.
This type of wire is suitable for abrasion and impact work. Between metal and metal, hardness occurs from deformation (Work hardening). The surface of the weld is hard because the structure is martensite, while the inner part of the work is tough. This original metal is high manganese steel.
implementation These include rock-crushing parts, crushers, stone shovels, railway tracks, etc. Ere Mint-A (nickel-manganese) nickel-doped manganese steel. Changes to Yield Strengths are not apparent. but tends to be highly seized Plating is still in demand for to achieve high toughness
This type of steel when low carbon gives good toughness without quenching, but if the original 0.50-0.90 percent carbon and 3-5 percent nickel is a popular ingredient for welding rods. which has better resistance to brittleness than standard grades when subjected to repeated heating up to 425 °C
EFe Mn-B (molytinum-manganese) The addition of molybdenum to manganese steel increases the stress. It also increases the ductility of low carbon manganese steels. which can be used to make good welding wires
3) Filler metal RF Cr-A and EFeCr-A Austenitic High Chromium Iron RFeCr-A as rod and EFeCr-A as electrode. used masking parts of agricultural machinery Electric arc welding is used to weld thick and large areas. that want to weld a wide mask As for gas welding, it is used for some jobs.
Can be used to cover the plow. Because the welding content can flow to coat the edge of the work. It’s fine. and has resistance to abrasion wear of sandy soils But not suitable for rocky soil due to the impact from the rocks.
Applications : Including coal chute, runner for rolled steel, shot blasting equipment.
Brick making equipment, etc.
4) RCoCr and EcoCr Cobalt-Base filler metals
The face of exhaust valves of aircraft, trucks, buses and diesel engines. Usually a soft alloy CoCr-A welding metal is used for such purposes due to its hot working properties. resistance to corrosion and oxidation and also Also applied to pump shafts, corrosive and corrosive applications. CoCr-B and CoCr-C weld deposits have a high carbon content and therefore high hardness and can be used for wear resistance applications. But not suitable for work with impact.
5) Original Metal Copper-Base Alloy
Copper-Base Alloy filler metal is used in masking and capping of bearings, providing corrosion and wear resistance of the surface.
Filler metals ERCuAl-A2 and electrodes ECLAI-A2 are used for bearing surfacing, hardness ranges from 130-190 BHN, and resistance to corrosion. Filler metals ERCLA-A3, RCLA-C, ECuAl- B and ECLA-C are used for bearing surfacing where required. High hardness ranges from 140-290 BHN.
The conventional alloys RCUAL-C, RCUA-D, RCwAH-E ECLAIC, ECUAI-D and EC BAI-L are used for surfacing wear resistant bearings. High hardness between 230-390 BHN, including gears, cams, pulley wheels, wear plates, cutting dies, etc.
The former RCuSA and ECast laminations are used for surfacing where resistance to heat shock is generally required by copper-silicon filler metals. Not recommended for bearing applications.
Copper-tin original metal (CuSn) is used for surfacing bearings that require low hardness.
on the surface and require resistance to corrosion, but infrequently may be applied to applications requiring
The resistance to depth or
Many original metals are also used to connect the same and different metals, as can be seen from the copper and copper alloy standards.
6) RNICE original metal and ENiCr Nickel-Chromium-Boron
RNICY is an electrode and ENICE is an electrode. for no chemical ingredients has been specified as detailed as other welding wire Weld hardness increases from NiCP-A to
Nice-C and vice versa the ability to slap with machinery and toughness will be reduced. Therefore, in the selection of welding electrodes, it also depends on the aforementioned components.
The weld metal has good resistance to metal-to-metal wear resistance, good resistance to abrasion from small particles, good resistance to corrosion and hardness.
Applications include liquid cement pump screws, valves, screw conveyors and cams, etc.