Date: 2025/4/16
Category: Metallurgical encyclopedia terms
Views: 53
At present, the majority of iron & steel enterprises in China adopt slitting rolling technology or high-speed bar production line to produce small-size bar products in order to improve the output of small-size bar products, but the existing slitting rolling technology is difficult to control, and can not be rolled in multiple ways. The equipment is more complex, which occupies a large area, and the rolling line is longer, the production is not so smooth, the productivity is low and the product quality is difficult to control.
The advantages of dual-line high-speed bar production line is that it can save space for customers, the rolling line is short, the production is smooth, and the production efficiency is high, and can realize a variety of rolling methods and ensure product quality.
The double high-speed bar rolling line is mainly composed of billet hot delivery roller table, electric induction heater, roughing and intermediate mill, pre-finishing mill, modular finishing mill, water cooling box, cooling bed, shearing machine, baler and other technical equipment and water, air and electricity, and intelligent control system.
When rolling bars with small diameter (usually below Φ20), the billet is rolled into bars and cut by reheating furnace, high pressure water descaling device, rough rolling mill train, intermediate rolling mill train, and pre-finishing mill train, and can be cooled through the bar inlet on both sides of the pre-finishing control water tank into the pre-finishing control water tank, and through the bar outlet on both sides. After the first guide device and free looper, enter the corresponding finishing mill train for finishing rolling, and then transfer to the direction of the cooling bed, double line rolling can be realized. The production efficiency is relatively high, and the double lines are cooled by the same control cooling water tank after pre-finishing rolling, the finishing mill train is divided into two groups, respectively located on both sides of the front of the pre-finishing mill train, and the control cooling water tank at the end is located in the front of the finishing mill train. Through the first arc guide device and free looper transmission to the finishing mill train for finishing rolling.
This not only simplifies the equipment, but also saves the area, makes the rolling line shortest and production smooth, further improves the production efficiency, and ensures the rolling quality to prevent the product from large linear error, through-size, performance fluctuation, surface peeling, flash and other problems.
At the same time, when rolling bars with large diameters (usually above Φ20), the billet is rolled into bars and cut by reheating furnace, high pressure water descaling device, roughing mill train, intermediate rolling mill train, and pre-finishing mill train, and can enter the pre-finishing mill rear control cooling water tank through the bar inlet in the middle of the pre-finishing rolling water tank and cool through the bar outlet in the middle, without passing through the finishing mill train. Guided directly into the cooling bed by the second guide device, multi-way rolling can be realized, further saving rolling lines and improving production efficiency.
Double high speed bar can be used in construction, metallurgy, machinery, rubber and other industries, mainly for transportation construction, electric power erection, metallurgical equipment, transportation equipment, mechanical processing and other industries of all kinds of welded steel bars, which is an important material to build a strong construction structure.
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