Annealing is one of the metal heat treatment processes, which means that the metal is slowly heated to a certain temperature, maintained for a sufficient time, and then cooled at a suitable speed.
The annealing of the Flat Steel Bar is a heat treatment method in which the steel is heated to a temperature at which the phase change or the phase transition occurs, and the temperature is slowly cooled by heat preservation. Flat Steel Bar annealing in order to eliminate and improve the former process of tissue defects and internal stress, but also for the follow-up process to prepare, so the annealing is a semi-finished product heat treatment, also known as pre-heat treatment. Normalizing is the heat treatment method in which the steel is heated above the critical temperature so that the steel is fully converted to the average austenite and then naturally cooled in the air.
Flat Steel Bar, the lower the surface roughness, the more smooth the surface, the more difficult to cover foreign matter, the lower the local part of the lower the probability of corrosion. Therefore, Flat Steel Bar should be used as much as possible finishing surface.
This Flat Steel Bar surface cleanliness is very important, the final cleaning after passivation should be carefully carried out, because the residual acid to promote the cathode reaction, so that the film rupture, so that Flat Steel Bar activation, corrosion resistance decreased dramatically. Use environmental media.
The passivation film of Flat Steel Bar is thermodynamically inhibited by the metastable structure. Its protective effect is related to environmental medium. The use of regular cleaning, removal of harmful substances long-term private attached to the surface.
Steel is widely used in our lives, such as the production of bridges, beams, transmission towers, ships, shelves and so on. Anyang GB Flat Steel Bar manufacturers said that Flat Steel Bar is a relatively wide use of a Flat Steel Bar can be based on user needs, will be thick, fixed width, fixed length production for the user to reduce the cutting, and save the process, reducing the artificial, Material consumption, but also reduce the processing of raw materials loss, saving time, effort, and material. But we use Flat Steel Bar when it ignores its clean, in fact, the appropriate clean Flat Steel Bar can better play its performance and extend its service life.
Flat Steel Bar regular cleaning benefits
For the passivation of the Flat Steel Bar, due to residual acid to promote the cathode reaction, so that the film rupture, so that Flat Steel Bar activation, corrosion resistance decreased dramatically. So Flat Steel Bar need to be carefully cleaned. The lower the surface roughness, the smoother the surface, the more difficult to attach the foreign body, the lower the probability of local corrosion.