Groove steel forming method

Abstract

The invention provides a groove steel forming process and belongs to the technical field of steel and iron material rolling forming. The groove steel forming process comprises the steps of band steelconveying feeding, leveling, micro-pressing, local heating, dovetail edge forming, cooling, step-by-step rolling forming, straightening and discharging. The groove steel forming process has the advantages that when narrow band steel is utilized to manufacture groove steel, groove steel with a dovetail groove edge can be obtained through the process of local heating and step-by-step continuous rolling forming, and synchronous motion of band steel conveying and a discharging mechanism can be achieved. By adopting the groove steel forming process to manufacture the groove steel, energy sources are saved, the production efficiency is high, and the produced groove steel is high in shape and size precision and high in bearing capacity.

Description

Technical field [0001] The invention relates to a channel steel forming method, belonging to the technical field of steel material rolling processing forming. Background technique [0002] Embedded parts are components that are pre-installed (buried) in the concealed project. They are components placed during the pouring of the structure and used for lap joints when building the superstructure to facilitate the installation and fixation of the foundation of external engineering equipment. 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 ability, the construction field, especially the field of infrastructure project construction, has put forward higher requirements for embedded parts. Channel steel is a section steel that has been ...

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 kind of hot-rolled continuous hot-bending channel steel is provided in the Chinese patent (authorized announcement: CN 2621093Y), which has introduced the structural shape of the channel steel in detail, and has not described the hot-rolling and hot-bending detailed processing process of the channel steel, but 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