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Manufacturing technique of cold-bending steel sheet pile

A production process and steel sheet pile technology, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of inability to limit the lateral displacement of strip steel billets, large tensile strain at the outer edge of the lock arc, and difficulty in controlling the dimensional accuracy of the lock and other problems, to achieve the effect of reducing tensile strain, reducing production cost, and reducing cracking rate

Inactive Publication Date: 2010-06-09
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the forming pass on each frame of the existing cold-formed steel sheet pile production line adopts an open pass, and the forming rolls of the open pass cannot limit the lateral displacement of the strip steel billet, especially When the bending angle of the strip steel blank exceeds 90°, the dimensional accuracy of the strip steel blank after bending and deformation through the open pass cannot be guaranteed, and the bending angle of the cold-formed steel sheet pile lock is 180°, so it is difficult to control the strip steel blank The dimensional accuracy of the lock after bending; at the same time, when the strip billet is bent at 180°, the tensile strain at the outer edge of the lock is very large, which makes it easy to crack during the bending process

Method used

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  • Manufacturing technique of cold-bending steel sheet pile
  • Manufacturing technique of cold-bending steel sheet pile
  • Manufacturing technique of cold-bending steel sheet pile

Examples

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Embodiment 1

[0040] Figure 2 to Figure 10 It is a schematic diagram of the bending of each pass of the forming cold-formed steel sheet pile lock 1. Among them, strip billets 4 from image 3 (Pass 2) Start to bend, the bending angle of each pass is 22.5°, and it is divided into 8 passes to finally form the lock 1. Figure 3 ~ Figure 5 The bending of the strip steel blank 4 shown in each pass is the existing open pass, and the purpose is to bend the steel blank 4 to 90°; Image 6 It is the bending schematic diagram when the steel strip blank 4 is bent to 90°. At this moment, the closed pass type is used to bend the steel strip blank 4, Figure 6 ~ Figure 10 The bending of the strip steel billet 4 shown in each pass adopts a closed pass type for final bending to form the lock 1 of the cold-formed steel sheet pile.

[0041] Among them, when the steel strip 4 is bent at 0°-90°, the open pass of each pass is composed of a plurality of relatively rotating forming rolls: image 3 , Figure 4...

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Abstract

The present invention discloses production process of cold bent steel sheet pile with raised preliminary shaft machining precision. The technological scheme of the present invention is that the cold bent steel sheet pile is produced with strip steel blank and through stepped bending deformation including final closed pass bending to form preliminary shaft. The process has high preliminary shaft machining precision and less cracking of preliminary shaft during bending deformation. The production process of the present invention may be applied widely in producing different types of cold bent steel sheet pile, especially U-shaped cold bent steel sheet pile.

Description

technical field [0001] The invention relates to a production process of building materials, in particular to a production process of cold-formed steel sheet piles. Background technique [0002] As an environmentally friendly building material, steel sheet piles have a basic structure: one is steel sheet piles, the other is a lock structure on both sides, and the third is to form walls in the ground or in water. Due to its special structure, it has unique advantages: high strength, light weight, good water-proof performance; strong durability, reusable; remarkable environmental protection effect, which can greatly reduce the amount of soil and concrete used in construction, and effectively protect land resources, etc. Therefore, steel sheet piles are widely used. For example, in permanent structural buildings, they can be used to build docks, docks, etc.; Landslides, etc. At present, the annual consumption of steel sheet piles in my country is only about 10,000 tons, and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/04
Inventor 王飞龙李俊洪邱晓刚邓勇
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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