Technique for producing hot rolling hot forming T type channel steel with teeth

Abstract

The invention discloses a manufacturing technique for performing hot-rolling and hot-forming on toothed T-shaped channel steel, which comprises the following steps: firstly, 75 square billets of Q235 materials are sent into a heating furnace and heated to a temperature of between 1,200 and 1,250 DEG C; secondly, the heated square billets are rolled into nine passes in a blooming mill, and cambered blank sheets rolled from the ninth pass are sent into a rolling mill to be rolled for one pass respectively, and sent into a formation rolling mill and continuously rolled for nine passes; and thirdly, finished product materials which are rolled from the final rolling mill (K1) become the toothed T-shaped channel steel, wherein the inner surface of T-shaped channel steel is provided with meshed teeth and a hollow cavity is a T-shaped channel. The toothed T-shaped channel steel produced by the hot-rolling and hot-forming manufacturing technique has good bearing capacity, high safety and high yield, is favorable for assembly, and can be popularized.

Description

technical field [0001] The present invention relates to a new production process, in particular to a production process of hot-rolled thermoformed toothed T-channel steel used for installing glass curtain walls in hotels, restaurants, dance halls, airport terminal buildings and the like. Background technique [0002] With the construction of modern cities and the proliferation of high-rise buildings, large-scale buildings such as hotels, hotels, dance halls, airport terminals and casinos built in special economic zones have bright white or blue exterior walls of concrete and steel structures. The glass becomes a glass curtain wall, and the glass curtain wall and the concrete wall are connected (or connected) by a special C-shaped steel in the past. At present, the main methods of domestic production of such connectors are: [0003] ① C-shaped steel produced by casting method; [0004] ②C-shaped steel produced by cold forming method; [0005] Although the casting method or...

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Problems solved by technology

[0005] Although the casting method or the cold forming method can produce the required C-shaped steel, the C-shaped steel produced by the casting method is prone to casting stress, and the structure is uneven, which seriously affects the product quality.

If the annealing method is used to eliminate the stress, the product is prone to deformation and annealing softening after annealing treatment, and softening can greatly reduce the gravity and tensile load that the product can bear; excessive deformation of the product will inevitably affect the installation process or installation quality

[0006] Whether it is a cast product or a cold-formed product, the products obtained by these two methods have no teeth on the inner surface of the product when installing the glass curtain wall, so that the fastening part is in plane contact, and it is inevitable that the glass curtain wall will slide down during installation or use. , it is easy to cause personal or equipment safety accidents, and the production of C-shaped steel by the above two methods has low output and high cost.

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