Heading Rolling and Secondary Heat Treatment Technology of Steel Plate
Steel plate is a hot-rolled steel plate with a certain thickness, tensile strength and workability, which can be used as base material for producing steel structures, bridges, ships and vehicles in a large engineering construction. As an important product in the steel industry, steel plate has a very large market demand, and its production process is also relatively complicated. In the process of steel plate production, the process of heading rolling and secondary heat treatment technology plays an important role in determining the quality of steel plate.
Heading rolling technology is a kind of deformation processing technology. It is to use the rolling technology to roll the material (referred to as roll material) back and forth or make a relative or continuous rolling process with the roll groove, so as to achieve the plastic deformation between the roll material surface, so as to achieve the purpose of turning and forming the roll material. Heading rolling is a key technology in steel plate production, which has the characteristics of large processing efficiency, high product quality and high degree of automation. The steel plate produced by heading rolling has special performance requirements. Going through the heading rolling process can make the steel plate more strong and hard, and the product performance can be greatly improved by secondary heat treatment technology.
The secondary heat treatment technology can significantly improve the performance of steel plate by controlling the cooling rate of steel plate after hot rolling. The secondary heat treatment technology of steel plate mainly includes normalizing, quenching and tempering, and normalizing plus tempering. Through the proper application of secondary heat treatment technology, the internal structure of the steel plate can be improved, the microstructure of the steel plate can be even and fine, the strength of the steel plate can be increased, the toughness of the steel plate can be improved, and the toughness of the steel plate can be improved.
In the production process of steel plate, the heading rolling and secondary heat treatment technology are very important technologies. They can effectively improve the performance of steel plate, meet customer’s product performance requirements and enhance the competitiveness of steel plate. In order to ensure the quality of steel plate, it is necessary to pay attention to the quality control and process control of the two technologies in the production process, realize the automation of production, optimize and improve the production process, and continuously improve the performance of the steel plate.
