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Welding performance of Q460NH weathering steel

Welding performance of Q460NH weathering steel

Q460NH weathering steel is a kind of weathering structural steel, which is often used to manufacture bridges, structures and other building components that need to resist atmospheric corrosion. Its welding performance mainly depends on the following aspects:

1. Welding method: It is recommended to use manual arc welding, submerged arc welding or argon arc welding for welding.

2. Welding materials: Select appropriate welding materials, usually using matching welding wires or electrodes to ensure the performance of the weld and base metal.

3. Preheating and post-weld heat treatment: Appropriate preheating and post-weld heat treatment of the welding area can be considered to help reduce the residual stress generated by welding and improve the performance of the welded joint.

4. Welding parameter control: Control the welding current, voltage, welding speed and other parameters to ensure that the welding quality meets the requirements.

5. Welding process: Using appropriate welding processes, such as multi-pass welding, layer-by-layer surfacing, etc., can improve the quality of welded joints.

Generally speaking, the correct selection of welding methods, materials and good control of welding parameters are the keys to ensuring the welding performance of Q460NH weathering steel. It is best to follow relevant welding specifications and standards in actual operations to ensure that the welding quality meets the expected requirements.

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