Q: Is drilling and machining Q235 easy?
A: Yes, it is easy. Its low hardness results in low tool wear and high machining efficiency, making it suitable for general machining.
Q: Can Q235 be galvanized?
A: Yes, hot-dip galvanizing or electro-galvanizing significantly improves rust resistance and is commonly used for Q235 components used outdoors.
Q: Does Q235 require heat treatment after welding?
A: Generally not. However, if the welded part is thick or has a complex structure, stress-relieving annealing can be performed to eliminate welding stress.
Q: What are the requirements for the cold bending test of Q235?
A: Bending angle 180℃. The mandrel diameter varies depending on the steel thickness: for thickness <= 16mm, the mandrel diameter d=0.5a (where a is the steel thickness). No cracks should appear after bending.