The steel flat bar refers to the steel whose width is greater than its height, which is mainly used for steel structure manufacturing, machinery manufacturing, automobile industry, mining machinery, lifting machinery, and other industrial materials. Therefore, the requirements for steel flat bars are relatively strict, and it is also very strict with the different processes for producing steel flat bars, among which the annealing treatment is a very strict process.
The annealing process of steel flat bar is a kind of metal heat treatment method in which the steel is heated to the temperature of phase change or departmental phase change, and after holding heat for a period of time, making it cooled at an appropriate rate in the furnace or buried in the furnace or medium with poor thermal conductivity. The annealing of steel flat bar is not only to eliminate and improve the structural defects and residual stress left by the previous process but also to prevent deformation and cracking of the workpiece. In addition, it can soften the steel in order to carry out the cutting process, refine the grain and improve the structure to enhance the mechanical properties of the workpiece as well as prepare for the follow-up process.
Therefore, the annealing is a semi-finished product heat treatment, also called pre-heat treatment. Normalizing is a heat treatment method in which the steel is heated to above the critical temperature to transform the steel into average austenite and then naturally cooled in the air. If the annealing method of steel flat bar is not mastered properly, it will affect the quality and performance of the steel flat bar.
If you are interested in a steel flat bar and have the intention to purchase, please choose Henan Steel Guang International Trade Co., Ltd. We will uphold the principle of customer first and do our best to meet your needs. Please feel free to contact us.