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Method for straightening hot rolled reinforcing steel bar having ribs and equipment

A hot-rolled ribbed steel bar and straightening technology, applied in the field of wire straightening methods and equipment, can solve the problems of swinging and hurting people, twisting of longitudinal ribs of steel bars, damage to transverse ribs, etc. distorted effect

Inactive Publication Date: 2005-03-30
张光伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the longitudinal rib deviates from the working part of the guide roller, the longitudinal rib of the steel bar cannot be continuously guided, the non-circular steel bar is in a state of twisting and cannot move forward according to the set track, the longitudinal and horizontal ribs will be crushed, and subsequent work Qualified steel bars cannot be straightened in the first step, resulting in distortion of the longitudinal ribs of the steel bars, and serious damage to the longitudinal and transverse ribs;
[0005] 2. When the tail end of the coil comes out of the pre-straightening roller group in the pre-straightening mechanism, the tail end of the coil is easy to knot or swing and hurt people because of loss of control

Method used

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  • Method for straightening hot rolled reinforcing steel bar having ribs and equipment
  • Method for straightening hot rolled reinforcing steel bar having ribs and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] As shown in the attached figure: the hot-rolled ribbed steel bar straightening equipment includes a pre-straightening mechanism 2 and a longitudinal rib guiding mechanism 5, the pre-straightening mechanism 2 has a pre-straightening roller group 1, and the longitudinal rib guiding mechanism 5 has a guide roller 6. A roller 3 and a guide rail 4 are arranged between the pre-straightening mechanism 2 and the longitudinal rib guide mechanism 5, and the guide rail 4 leads from the bottom of the pre-straightening mechanism 2 to the longitudinal rib guide mechanism 5 on the rear side of the main machine. The pre-straightening roller group 1 can be one group, also can be more than one group, and its pressing roller axis can be parallel to the horizontal plane, also can be perpendicular to the horizontal plane.

[0020] When straightening the hot-rolled ribbed steel bars of Φ6-8 mm, the distance between the pre-straightening roller group 1 and the guide roller 6 is 0.7-1.5 meters....

Embodiment 2

[0022] Embodiment 2: When straightening the hot-rolled ribbed steel bar of Φ8-12 mm, the distance between the pre-straightening roller group 1 and the guide roller 6 is 1.5-3 meters. All the other are the same as embodiment one.

Embodiment 3

[0023] Embodiment 3: When straightening the hot-rolled ribbed steel bar of Φ12-16 mm, the distance between the pre-straightening roller group 1 and the guide roller 6 is 3-5 meters. All the other are the same as embodiment one.

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Abstract

A method and apparatus for straightening the hot-rolled ribbed reinforcing bar is composed of a prestraightening mechanism with a set of prestraightening rollers, a longitudinal rib guiding mechanism with guide roller, and the roller and guide track between said two mechanisms. Its advantages are less damage to ribbed reinfocing bar and high safety.

Description

technical field [0001] The invention relates to a method and equipment for straightening wire rods, in particular to a method and equipment for straightening hot-rolled ribbed steel bars. Background technique [0002] Since the Ministry of Construction and the Ministry of Metallurgy jointly issued a document in 1995 to promote the application of hot-rolled ribbed steel bars (especially 400Mpa new grade III steel bars), the longitudinal ribs of hot-rolled ribbed steel bars are distorted after uncoiling and straightening, and the longitudinal and transverse ribs The problem of severe damage has become a big problem in the construction industry and metallurgy industry. Although this problem has been worked hard by many manufacturers for several years, it has not been solved. [0003] Hot-rolled ribbed steel bar is a kind of wire with both the transverse ribs of ordinary steel bars and two symmetrical longitudinal ribs. There are Φ6mm, Φ8mm, Φ10mm, Φ12mm, Φ...

Claims

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Application Information

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IPC IPC(8): B21F1/02
Inventor 张光伟
Owner 张光伟
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