Precautions for welding Q235NH weathering steel plate

Q235NH weathering steel plate, atmospheric corrosion-resistant hot continuous rolled steel, also known as Corden steel, corrosion-resistant steel, is widely used in outdoor steel such as large outdoor sculpture steel such as containers, power plant chimneys, railway engineering, etc., Q235NH weathering steel plate (that is, atmospheric corrosion resistance Steel) is a cheap and high-quality low-alloy steel series between ordinary steel and stainless steel. Q235NH weathering steel plate can be developed and innovated continuously after incorporating modern metallurgical new mechanisms, new technologies and new processes. It is a series of the world's leading level of super steel technology. One of the steel grades.

Q235NH weathering steel plate welding precautions:
1. The electrode must be baked at 380-400℃ for 1 hour before welding, and used as it is baked.
2. The rust, oil stains, moisture and other impurities on the weldments must be removed before welding.
3. Short arc operation must be used when welding, and the swing range should not be too large. Narrow bead welding is appropriate.
4. In order to prevent arc-striking air holes, the arc-striking plate should be used for arc-striking or the arc-striking return method should be used for welding.

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