Production technology of high-elongation cold-rolled ribbed bar

A technology of cold-rolled ribbed steel bar and production process, applied in the field of cold-rolled steel bar, can solve the problems of backward processing technology of cold-rolled steel bar, poor process fluency of cold-rolled steel bar, poor performance of steel bar, etc., so as to ensure fluency and improve fluency. , the effect of easy maintenance

Inactive Publication Date: 2019-06-14
巩义市金迪冶金设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The processing technology of cold-rolled steel bars is backward, and the performance of the process...

Method used

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  • Production technology of high-elongation cold-rolled ribbed bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] like figure 1 Shown, a kind of high-ductility cold-rolled ribbed steel bar production process comprises feeding operation, steel bar processing and finished product collection, and described steel bar processing comprises the following steps:

[0058] One rolling process: the steel bars pass through a rolling mill, which reduces the diameter of the steel bars and rolls them flat.

[0059]Two-pass rolling process: pass the steel bars rolled in one pass through two rolling mills, and the two rolling mills round and reduce the diameter of the steel bars rolled in one pass, and the diameter reduction ratio is 0.6-0.8.

[0060] Heat treatment process: Tempering the steel bars treated in the second rolling process, heat treatment at a temperature of 580-650°C for 0.8-2s, and the treated steel bars are naturally cooled in the air.

[0061] The first rolling process does not reduce the diameter of the steel bar, but just flattens the steel bar. By rolling the steel bar flat, t...

Embodiment 2

[0063] like figure 1 Shown, a kind of high-ductility cold-rolled ribbed steel bar production process comprises feeding operation, steel bar processing and finished product collection, and described steel bar processing comprises the following steps:

[0064] One rolling process: the steel bars pass through a rolling mill, which reduces the diameter of the steel bars and rolls them flat.

[0065] Two-pass rolling process: pass the steel bars rolled in one pass through two rolling mills, and the two rolling mills round and reduce the diameter of the steel bars rolled in one pass, and the diameter reduction ratio is 0.6-0.8.

[0066] Heat treatment process: Tempering the steel bars treated in the second rolling process, heat treatment at a temperature of 580-650°C for 0.8-2s, and the treated steel bars are naturally cooled in the air.

[0067] The first rolling process does not reduce the diameter of the steel bar, but just flattens the steel bar. By rolling the steel bar flat, ...

Embodiment 3

[0077] like figure 1 Shown, a kind of high-ductility cold-rolled ribbed steel bar production process comprises feeding operation, steel bar processing and finished product collection, and described steel bar processing comprises the following steps:

[0078] One rolling process: the steel bars pass through a rolling mill, which reduces the diameter of the steel bars and rolls them flat.

[0079] Two-pass rolling process: pass the steel bars rolled in one pass through two rolling mills, and the two rolling mills round and reduce the diameter of the steel bars rolled in one pass, and the diameter reduction ratio is 0.6-0.8.

[0080] Heat treatment process: Tempering the steel bars treated in the second rolling process, heat treatment at a temperature of 580-650°C for 0.8-2s, and the treated steel bars are naturally cooled in the air.

[0081] The first rolling process does not reduce the diameter of the steel bar, but just flattens the steel bar. By rolling the steel bar flat, ...

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Abstract

The invention belongs to the technical field of steel band cold rolling, and discloses a production technology of a high-elongation cold-rolled ribbed bar. The production technology comprises the feeding procedure, the bar processing procedure and the product collection procedure, wherein the bar processing procedure comprises the following steps of first-pass rolling procedure: carrying out reducing flattening on the bar through a first-pass rolling machine; second-pass rolling procedure: carrying out rounding and reducing on the bar treated in the first-pass rolling procedure through a second-pass rolling machine, wherein the reducing ratio is 0.6 to 0.8; and thermal treatment procedure: carrying out tempering treatment on the bar treated in the second-pass rolling procedure, carrying out thermal treatment for 0.8 s to 2 s at the temperature of 580 DEG C to 650 DEG C, and naturally cooling the treated bar in air. According to the production technology, reducing is not carried out onthe bar in the first-pass rolling procedure, the bar is only flattened in the first-pass rolling procedure, and strength of the bar is improved through bar flattening.

Description

technical field [0001] The invention relates to the technical field of steel bar cold rolling, in particular to a production process of high-ductility cold-rolled ribbed steel bar. Background technique [0002] Cold-rolled ribbed steel bar is a new type of building steel that developed rapidly at home and abroad in the late 20th century. Cold-rolled ribbed steel bar is formed by using a hot-rolled disc to reduce the diameter by multi-pass cold rolling, and one rib is pressed and the internal stress is eliminated. A bar with two or three crescents. Because the cold-rolled ribbed steel bar has the characteristics of high strength, good plasticity, easy processing and strong binding force with cement, which can save a lot of steel, the cold-rolled ribbed steel bar is an update of cold-drawn low-carbon steel wire in prestressed concrete members. The replacement product, in the cast-in-place concrete structure, can replace the I-grade steel bar to save steel, which is a better k...

Claims

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Application Information

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IPC IPC(8): B21B1/16B21B37/74B21B37/56B21C51/00B21F1/02B21B33/00B21B45/04
Inventor 刘保森王红伟
Owner 巩义市金迪冶金设备有限公司
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