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Method for improving uniformity of general performance of rolled wire rod

A uniformity and wire rod technology, which is applied in the field of improving the uniformity of the performance of the rolled wire rod, can solve the problems of the fluctuation of the tensile strength of the rod, and achieve the effect of reducing the cost of wire drawing, simple and easy to implement, and reducing the tensile strength

Inactive Publication Date: 2018-05-04
张宇
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AI Technical Summary

Problems solved by technology

[0007] At present, there are few reports on production methods that are suitable for rolling multiple types of wire rods, ensure that the strength of the wire rod is at a low level, the fluctuation of the tensile strength of the wire rod is small, and the cost is low.

Method used

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  • Method for improving uniformity of general performance of rolled wire rod
  • Method for improving uniformity of general performance of rolled wire rod
  • Method for improving uniformity of general performance of rolled wire rod

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Embodiment Construction

[0024] In the following, the present invention will be further described in detail in combination with examples and comparative examples. The embodiment and the comparative example all adopt a walking heating furnace-high pressure water dephosphorization-multi-pass high-speed rolling-spinning-stelmore delayed cooling technology route. During the cooling process, the insulation cover is all closed, the fans are all closed, and the cooling After the set volume.

[0025] 1. Example 1 was implemented in 600MPa grade wire. The spinning tube is used for the first time, the spinning temperature meets Ts=Fs+98℃±10℃, the initial section roller table speed Vs=0.13m / s, the initial section of the Stelmore cooling roller table can be perpendicular to the forward direction of the roller table Do reciprocating motion, length 1.5m, reciprocating motion frequency 50 times / min, amplitude 0.15m;

[0026] 2. Example 2 was implemented in a 550MPa grade wire. The spinning tube is used for the first t...

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Abstract

The invention discloses a method for improving the uniformity of the general performance of a rolled wire rod. According to the method, the laying temperature Ts is equal to Fs+85 DEG C+(Vs / 0.3m / s)*30DEG C+ / -10 DEG C, wherein Fs is the phase change temperature, VS is the speed of an initial section of a roller bed, the initial section of the cooling roller bed can do reciprocating motion perpendicular to the advancing direction of the roller bed, the length is 1.2-1.5m, the reciprocating motion frequency is 50-60 times / min, the amplitude is 0.10-0.15m, so that the density and the lap joint ofthe wire rod are dislocated, and therefore the performance difference between the edge part and the middle part can be reduced. The method has the advantages that the general strength difference of the steel wire rod can be controlled within 20MPa.

Description

Technical field [0001] The invention belongs to the technical field of rolled steel production, and particularly relates to a method for improving the uniformity of the performance of the rolled wire rod, which is beneficial to ensure the quality of subsequent deep processing. Background technique [0002] At present, the alloying of wire rod steel involves many elements. The addition of C, Mn, Cr, Mo, B and other alloying elements can greatly increase the average tensile strength of the wire rod. At the same time, the structure and tensile strength of the wire rod The sensitivity to the cooling rate is greatly improved. The structure formed by the same composition of wire rods at different cooling rates is significantly different, resulting in large fluctuations in the tensile strength of the wire rod, that is, the tensile strength and the strength of the wire rod are uniform The performance is closely related to the cooling method after wire rod rolling. [0003] In the modern w...

Claims

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Application Information

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IPC IPC(8): B21B1/16B21B37/74B21B45/02
CPCB21B1/16B21B37/74B21B45/0203
Inventor 张宇
Owner 张宇
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