Annealing and normalizing temperature of SPA-H weather resistant steel plate

The SPA-H weather resistant steel plate is heated to the annealing temperature and kept for a certain period of time, and then it is cooled down after the temperature of the furnace is fully cooled.

Processing function:
(1) Eliminate the internal stress of SPA-H weather resistant steel plate to prevent deformation or cracking;
(2) Reduce the hardness of SPA-H weather resistant steel plate, enhance plasticity, and provide convenience for subsequent cold processing and cutting;
(3) Grain refinement, elimination of structural defects, uniform internal composition and organization, enhancement of the performance of SPA-H weather resistant steel plate or used for subsequent process preparation functions.

The normalizing temperature of SPA-H weather resistant steel plate, the internal structure of SPA-H weather resistant steel plate, the complete transformation of weathering steel austenite, cooling in the air, and then cooperating to temper.

SPA-H weather resistant steel plate is organized into ferrite + bainite, tempered sorbite, martensite during tempering, tempered bainite, or tempered ferrite + pearlite. This process can stabilize the internal structure of the SPA-H weather resistant steel plate and enhance the plasticity and resistance of the SPA-H weather resistant steel plate.