Rolling ingots or billets of different chemical compositions and shapes into steel with the desired shape and properties requires a series of processes. The combination and sequence of these processes is called a process.
Due to the wide variety of steels with different shapes, grades and uses, the process of rolling different products is also different.
Proper process determination is important to ensure product yield, quality and cost reduction.
The steel rolling production process is quite complex. Although the quality requirements of rolled products are improved, the range of varieties is expanded, the application of new technologies and new equipment, and the various processes that constitute the process will undergo corresponding changes, but the entire rolling production process is always composed of the following basic processes:
Preparation of blanks, including cleaning of surface defects, removal of surface oxide scale and preheating of blanks.
Billet heating is an important process in hot rolling production.
Steel rolling is the core of the entire steel rolling production process. The billet is formed by rolling. The rolling process plays a decisive role in the quality of the product.
The quality requirements of rolled products, including geometric dimensional accuracy, internal structure and performance, surface quality of products, etc.
The task of making a rolling schedule plan is to provide reasonable process parameters on the basis of in-depth analysis of the characteristics of the rolling process, to meet the above-mentioned quality requirements, and to ensure good technical and economic indicators of the rolling mill.
Finishing rolling is the last process in the steel rolling production process, and the process is complicated. It plays a final role in guaranteeing the quality of the product.
The technical requirements of the products are different, and the content of the finishing rolling process is also very different. The finishing rolling process usually includes many specific processes such as cutting or coiling of steel, cooling after rolling, straightening, heat treatment of finished products, surface cleaning of finished products, and various coloring.
Regarding the selection of rolling mill passes, we recommend you to refer to these aspects
The condition of the billet should be considered: whether it is a continuous casting billet or a rolled billet, section geometry, size and fluctuation range, billet surface quality, steel grade, etc.
Equipment conditions should be considered: rolling mill layout, frame structure, unit composition, quantity and parameters, transmission mode, motor capacity and speed range, auxiliary equipment configuration and capacity.
Product conditions should be considered: product variety, specification range, dimensional accuracy, metal performance requirements.
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