Molding method of cold-bending steel plate pile provided with non-uniform-thickness lock buckle

Abstract

The invention provides a molding method of a cold-bending steel plate pile provided with a non-uniform-thickness lock buckle, which utilizes induction sensing equipment to heat edge parts of two edges of a flat plate material to 500-900 DEG C to form a molding region with good plasticity; utilizing a side-face extruding roller to gradually extrude the edge parts of the plate material path by path so as to flow the plate material at the edge parts along the thickness direction and further mold a needed non-uniform-thickness transition plate material; utilizing a molding roller to roll the non-uniform-thickness transition plate material into a non-uniform-thickness plate material with a target section; and coldly bending the plate material with the non-uniform-thickness lock buckle by the continuous molding paths to form the steel plate pile provided with the non-uniform-thickness lock buckle. The molding method disclosed by the invention utilizes the side-face extruding roller to gradually extrude the edge parts of the plate material into the non-uniform-thickness lock buckle, and overcomes the problems that the thicknesses of all parts of the traditional cold-bending steel plate pile are the same, the lock buckle part cannot be tightly clamped, the water cannot be stopped and the like.

Description

technical field [0001] The invention relates to a forming method of a steel sheet pile, in particular to a partial hot roll forming method of a cold-formed steel sheet pile with locks of non-equal thickness. Background technique [0002] At present, the annual consumption of steel sheet piles in my country remains at about 30,000 tons, accounting for only 1% of the world's total, and is limited to some permanent projects such as ports, docks, and shipyards, and temporary projects such as bridge cofferdams and foundation pit support. . [0003] According to the production process, steel sheet pile products are divided into two types: cold-formed thin-walled steel sheet piles and hot-rolled steel sheet piles. In engineering construction, the scope of application of cold-formed steel sheet piles is relatively narrow, and most of them are used as supplementary materials for applications. Hot-rolled steel sheet piles have always been the leading product for engineering applicatio...

AI Technical Summary

Problems solved by technology

However, due to the simple processing method, the thickness of each part of the pile body is the same, and the cross-sectional size cannot be optimized, resulting in loose buckle at the joint and no water stop; limited by the capacity of cold-bending processing equipment, only low-strength steel grades and thinner thicknesses can be produced. products; and the stress generated during the cold bending process is relatively large, and the pile body is prone to tearing during use, so the application has great limitations

Therefore, in engineering construction, the application range of traditional cold-formed steel sheet piles is relatively narrow, and most of them are only used as supplementary materials.

Images