The important role of Q295NH weathering steel plate annealing

The purpose of Q295NH weathering steel plate annealing is as follows:

(1) reduce the hardness of Q295NH weathering steel plate, improve the plasticity, in order to facilitate cutting and cold deformation processing.

(2) refine the grain, uniform the structure and composition of steel, improve the performance of Q295NH weathering steel plate or prepare for the subsequent heat treatment.

(3) Eliminate residual internal stress in Q295NH weathering steel plate to prevent deformation and cracking.

Q295NH weathering steel plate annealing methods include complete annealing, homogenizing annealing, spidizing annealing, stress degradation, recrystallization annealing, dehydrogenation annealing, etc.