Forming process for special C-shaped channel steel

Abstract

The invention provides a forming process for special C-shaped channel steel and belongs to the technical field of steel material rolling and forming. The special forming process for C-shaped channel steel comprises the following steps of: conveying and feeding band steel, leveling, micro-pressing, locally heating, forming a dovetail-shaped edge, cooling, gradually rolling and forming, straightening and discharging. The special forming process has the advantages that: when narrow band steel is used for manufacturing the special C-shaped channel steel, the C-shaped channel steel with a dovetail groove edge can be obtained by adopting the processes of locally heating and gradually and continuously rolling and forming, and synchronous motion of a band steel conveying mechanism and a discharging mechanism can be realized. By adoption of the process for manufacturing the special C-shaped channel steel, energy is saved, production efficiency is high, and the produced C-shaped channel steel has high shape and size precision and high bearing capacity.

Description

Technical field: [0001] The invention relates to a special C-shaped channel steel forming process, which belongs to the technical field of rolling, processing and forming of iron and steel materials. Background technique: [0002] Embedded parts are pre-installed (buried) components in concealed projects. They are structural parts placed during structural pouring and used for lap joints when building superstructures to facilitate the installation and fixation of external engineering equipment foundations. The traditional embedded parts commonly used in the construction field are generally frame structures, which are characterized by low effective utilization of metal structures, heavy weight, and cumbersome installation. In recent years, with the continuous improvement of design level and construction capacity, the field of construction, especially the field of basic project construction, has put forward higher requirements for embedded parts. C-shaped channel steel is a se...

AI Technical Summary

Problems solved by technology

[0003] The manufacturing process of cold-rolled C-shaped steel adopts a single multi-pass cold-rolled cold-bending process, and the thickness of the groove edge and the strip steel raw material is the same, resulting in a large assembly gap between the T-bolts of the embedded parts and the connecting bottom plate, and the strength of the C-shaped steel bottom plate Low, easy to crack, generally only used for anchoring under static load conditions

A Chinese patent (application number: 200910214310.2) provides a cold-bending forming process and production line for producing large-width U-shaped channel steel. It adopts multi-pass cold bending to obtain U-shaped channel steel through plastic deformation of the plate. What it obtains is General-purpose U-shaped channel steel, not suitable for fastening or anchoring in building curtain walls or other fields

The Chinese patent (authorized announcement: CN 2621093Y) provides a special C-shaped channel steel for hot rolling and continuous hot bending. The detailed processing process is not described, but the hot-rolled C-shaped channel steel involved in the invention has a dovetail groove edge, and the strength of the C-shaped channel steel is easy to ensure, which is very suitable for fastening and anchoring in various construction fields

However, the processing of hot-rolled C-shaped steel requires heating, resulting in high energy consumption, high cost, and poor operating environment

The processing process of cold rolling or cold bending process does not require heating, but the degree of plastic deformation of the material is large, the stress concentration of C-shaped channel steel is large, and it is difficult to obtain the edge of the dovetail groove

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