Q235 steel plate can be heat-treated for strength?
A: No, because it is low-carbon steel, heat treatment (such as quenching and tempering) cannot significantly improve its strength. Only stress-relieving annealing can be performed to eliminate internal stress after processing.
Q235 steel plate will crack during cold bending?
A: Under normal circumstances, it will not. Its plasticity is excellent. If cracking occurs, it is mostly due to excessive impurities in the raw material or an excessively small bending radius (less than the standard mandrel diameter).
Q235 steel plate has the following surface quality requirements?
A: The surface must be free of harmful defects such as cracks, scars, folds, and pitting. Minor oxide scale and scratches can be removed by grinding. The depth of defects must not exceed the allowable deviation of the steel plate thickness.
Q235 steel plate has the following main application areas:
A: Mainly general structural components, covering building engineering (steel structures, beams, columns, floor slabs), machinery manufacturing (equipment bases, supports), vehicle manufacturing (truck bodies, frames), containers, hardware products, pipe supports, embedded parts, etc. How to differentiate the application scenarios of Q235A and Q235B steel plates?
A: Q235A has no impact requirements and is suitable for static, normal temperature, and no-load impact scenarios, such as embedded parts, general supports, and hardware accessories; Q235B is the most commonly used grade and is suitable for scenarios with slight impact and welded structures, such as steel structures, equipment shells, and carriages.