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1. The composition of the electrode
The welding rod is composed of two parts, the coating and the core. The melting speed of the coating and the core should be uniform, and the melting speed should be slower than the melting speed of the core.
2. Specifications of welding rods
The electrode has different diameters and lengths, and the diameter of the electrode is generally selected according to the thickness of the component during use. Commonly used electrode diameters are Φ1.6, Φ2.0, Φ2.5, Φ3.2, Φ4.0, Φ5.0
3. Welding rods are classified by use
1. Structural steel electrodes: including carbon steel electrodes and some low alloy steel electrodes
2. Molybdenum and chrome-molybdenum heat-resistant steel electrodes: the weld metal of this type of electrode has different degrees of high temperature resistance.
3. Stainless steel electrode: The weld metal of this type of electrode has different degrees of anti-atmospheric or corrosion-resistant working ability at normal temperature, high temperature or low temperature.
4. Surfacing electrode: The surfacing layer of the weld metal surface of this type of electrode has different degrees of wear-resistant or corrosion-resistant working ability at room temperature or high temperature.
5. Low temperature steel electrode: The weld metal of this type of electrode has a certain low temperature resistance working ability.
6. Cast iron electrode: This type of electrode is used for welding or repairing cast iron.
7. Nickel and nickel alloy electrodes: This type of electrode is used for welding of nickel and nickel alloys, as well as for welding and surfacing of dissimilar metals.
8. Copper and copper alloy electrodes: This type of electrode is used for the welding of copper and copper alloys, as well as for the welding and surfacing of dissimilar metals, and the welding repair of cast iron.
9. Aluminum and aluminum alloy electrodes: These electrodes are used for welding, repairing and surfacing of aluminum and aluminum alloys.
10. Special purpose welding rod
June 01, 2023
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