Channel steel forming method

Abstract

The invention provides a channel steel forming process and belongs to the technical field of steel and iron material rolling and forming. The channel steel forming process comprises the steps of strip steel conveying and feeding, leveling, micro-pressing, local heating, dovetail edge forming, cooling, step-by-step rolling, straightening and discharging. The channel steel forming process has the advantages that channel steel with dovetail groove edges can be obtained and synchronous movement of a strip steel conveying and discharging mechanism can be achieved by adopting the processes of local heating and step-by-step continuous roll forming when ribbon steel is utilized to manufacture channel steel. By the adoption of the channel steel forming process for channel steel manufacture, energy sources are saved, the production efficiency is high, and the produced channel steel is high in shape and size accuracy and good in bearing capacity.

Description

technical field [0001] The invention relates to a channel steel forming method, 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. Channel steel is a section steel that has been gra...

AI Technical Summary

Problems solved by technology

[0003] The manufacturing process of cold-rolled steel adopts a single multi-pass cold rolling and cold-bending process, and the thickness of the groove edge and the strip steel raw material are the same, resulting in a large assembly gap between the T-bolts of the embedded parts and the connecting bottom plate, and the steel bottom plate has low strength. 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

A hot-rolled continuous hot-bent channel steel is provided in the Chinese patent (authorized announcement: CN2621093Y), which describes the structural shape of the channel steel in detail, and does not describe the detailed processing process of the hot-rolled and hot-bent channel steel, but its The notch of the hot-rolled 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 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 the channel steel is large, and it is difficult to obtain the dovetail groove edge