About the rolling process of steel bar production line

The rolling process is the core of the entire rebar rolling mill process.

The deformation process completed by billet rolling becomes the product required by users. The rolling process plays a decisive role in product quality.

The quality of rolled products includes product geometry, dimensional accuracy, internal structure, process mechanical properties and surface finish.

The rolling process must formulate corresponding rolling process technical regulations and process management systems according to product technical standards or technical requirements, production product characteristics and production technology and equipment capabilities, as well as production costs and labor conditions of workers. Ensure that the quality of rolled products and technical and economic indicators are optimized.

The rolling process of the entire steel bar rolling mill process generally consists of one or two rows of rough rolling mills, intermediate rolling mills and finishing rolling mills.

These equipments are responsible for billet section compression, semi-finished product rolling deformation, finished product rolling and other processes. The finishing mill pass or finishing pass is K1, the front rolling mill pass is K2, the front rolling mill pass is K3, and so on.

Continuous rolling mill means that several rolling mill stands are arranged in a row according to the rolling direction, and the rolling stock is rolled and deformed in several rolling mills at the same time.

The rolling speed of each stand increases with the length of the rolling stock, and the rolling method that maintains the same flow of metal per second in each rolling mill or has a slight stacking relationship is called a continuous rolling mill.

The continuous rolling mill has a high degree of mechanization and automation, high rolling speed, high rolling precision, high labor productivity and good product quality. It is the direction of reconstruction and new construction of bar and wire rolling mills.

During the rolling process, we should pay attention to the decarburization of the billet. The phenomenon that the surface carbon content of the billet decreases when it is heated is called decarburization.

The steels that are easy to decarburize are generally high-quality carbon structural steels and alloy steels with high carbon content. These steels have their special uses.

After decarburization, the carbon content on the surface and inside of the steel is inconsistent, which reduces the strength of the steel and affects its properties. Especially for steels that require high wear resistance, high elasticity and high toughness, due to decarburization, their surface hardness and performance are greatly reduced, and even waste products are produced.

The method of controlling decarburization: use a strict heating system, reasonably control the furnace temperature, and the oxidizing atmosphere in the furnace.

We Judian is a manufacturer of rolling mills, we can provide customers with the following content:

Complete rolling mill solution, including rolling pass design, production line setup, workshop layout according to customer requirements.

Skilled rolling mill technology, such as technical service and after-sales technical support. It is also possible to adjust production lines or develop increased production capacity in the future.

Various auxiliary equipment used in rolling mill production line. Such as drum boxes, gearbox reducers, coilers, vertical and side rings, flying shears, pinch rollers, cooling beds, TMT systems.

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