Implementation of Control Rolled RebarProperty Change
In order to improve the steel performance of reinforcing steel bars, control rolling technology has been adopted in the process of rolling steel bars. Control rolling affects the size, shape and orientation of the grains in the steel, which leads to changes in the corresponding mechanical properties. In this article, we will discuss implementation of control rolled rebar property change.
First, control rolling can increase the uniformity of the steel’s grain size. For the same cross section of steel bars, the grain size in traditional rolling methods is slightly larger. With the adoption of the control rolling technology, the grain size can be made more uniform and the grain size differences among the steel bars with the same cross section can be controlled. This can significantly improve the uniformity and performance of the steel bars.
Second, the structure characteristics of the steel can be modified. The traditional rolling methods can only adjust the longitudinal grain structure of the steel. However, control rolling can also adjust the transverse grain structure of the steel. It can help to control the size of the grains and to refine them, as well as to adjust the shape and orientation of the grains. This can further improve the yield strength and tensile strength of the steel bars, making them more suitable for certain projects.
Third, control rolling can help to reduce the impact of residual stresses in the steel bars. Residual stresses can differ in different rolling directions in the steel bars, and they can have an impact on the mechanical properties of the steel bars. Control rolling can help to reduce the detrimental effects of residual stresses and can improve the performance of the steel bars.
Fourth, control rolling can help to reduce the internal stress generated during the cooling process. In traditional rolling processes, the uniform cooling rate will cause the steel students to contract rapidly and cause large internal stress. However, the adoption of control rolling technology can slow down the cooling process and reduce the internal stress in the steel bars, thus decreasing the possibility of cracking in the steel bars.
The implementation of control rolling for the property change of steel bars can bring about significant improvements in the performance of the steel bars. It has been widely applied and it has brought great benefits to the construction industry. Therefore, it is a technology worthy of research and promotion.
