After heating the SPA-H steel plate to the normalizing temperature, the internal structure of the SPA-H steel plate is completely transformed into austenite structure, and then air is used as the medium to cool it. This is the heat treatment process. After normalizing, different metal structures can be obtained, such as bainite and pearlite, and they can also be mixed. This process can not only refine the crystal grains, eliminate stress, and uniform composition, but also enhance the cutting performance and hardness of SPA-H steel plate.
Solution treatment of SPA-H steel plate First heat the SPA-H steel plate to the solid solution temperature, so that the various alloying elements and carbides are fully and uniformly dissolved in the austenite, and then rapidly cooled, and then the alloying elements and carbon are too late to precipitate to obtain a single austenite structure The heat treatment process.
The role of the process:
(1) Eliminate hardening during processing to facilitate subsequent cold deformation processing;
(2) Restore the corrosion resistance of SPA-H steel plate;
(3) Uniform the internal structure of the SPA-H steel plate and the composition of the SPA-H steel plate.
