Method of Cold Rolling into High Precision Bright Flat Steel by Wire Rod

A high-precision, wire rod technology, used in metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of inability to coil, large waste of drawing heads, low production efficiency, etc., and achieve narrow width and thickness tolerances, The effect of improving the processing quality

Active Publication Date: 2018-04-17
WUXI TIANCHI STEEL BAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter can guarantee the thickness tolerance requirements, but there are defects such as poor surface finish (only 1.0), large waste of drawing head, and inability to coil
Since it cannot be coiled, it cannot be automated in the subsequent process, resulting in low production efficiency

Method used

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  • Method of Cold Rolling into High Precision Bright Flat Steel by Wire Rod
  • Method of Cold Rolling into High Precision Bright Flat Steel by Wire Rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First choose the Q195 wire rod coil round steel of φ8, stand-by.

[0031] Then, use a hydrochloric acid solution with a concentration of 15% and a temperature of 10°C to pickle the wire, disc, and round steel for 15 minutes.

[0032] After that, immerse the pickled wire, coil and round steel in an alkali solution with a concentration of 20% and a temperature of 10° C. for 3 minutes.

[0033] Afterwards, rinse the neutralized wire rod and round steel for 3 minutes with a high-pressure water gun.

[0034] Afterwards, place the washed wire coil and round steel on the unwinding rack, and use the conveying roller to send one end of the wire coil and round steel into the pre-calibration machine and cleaning machine in turn, and wash off the residue on the wire coil and round steel after pre-calibration Impurities.

[0035] Afterwards, use the first to fifth five-tandem rolling mills to carry out pre-rolling on the pre-calibrated and impurity-removed wire rods and round stee...

Embodiment 2

[0045] First choose the Q195 wire rod coil round steel of φ 16, stand-by.

[0046] Then, use a hydrochloric acid solution with a concentration of 23% and a temperature of 18°C ​​to pickle the wire, disc, and round steel for 17 minutes.

[0047] Afterwards, immerse the pickled wire, coil, and round steel in an alkali solution with a concentration of 25% and a temperature of 18° C. for 4 minutes.

[0048] Afterwards, use a high-pressure water gun to flush the neutralized wire rod round steel for 4 minutes.

[0049] Afterwards, place the washed wire coil and round steel on the unwinding rack, and use the conveying roller to send one end of the wire coil and round steel into the pre-calibration machine and cleaning machine in turn, and wash off the residue on the wire coil and round steel after pre-calibration Impurities.

[0050] After that, use the first to fifth five-tandem rolling mills to carry out pre-rolling on the pre-calibrated and impurity-removed wire rods and round s...

Embodiment 3

[0060] First choose the Q195 wire rod coil round steel of φ 30, stand-by.

[0061] Then, use a hydrochloric acid solution with a concentration of 30% and a temperature of 30°C to pickle the wire, disc, and round steel for 20 minutes.

[0062] After that, immerse the pickled wire, coil and round steel in an alkali solution with a concentration of 30% and a temperature of 30° C. for 5 minutes.

[0063] Afterwards, rinse the neutralized wire rod and round steel for 5 minutes with a high-pressure water gun.

[0064] Afterwards, place the washed wire coil and round steel on the unwinding rack, and use the conveying roller to send one end of the wire coil and round steel into the pre-calibration machine and cleaning machine in turn, and wash off the residue on the wire coil and round steel after pre-calibration Impurities.

[0065] After that, use the first to fifth five-tandem rolling mills to carry out pre-rolling on the pre-calibrated and impurity-removed wire rods and round st...

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Abstract

The invention discloses a method of forming high-precision bright flat steel by carrying out cold rolling on a wire. The method is characterized in that the method sequentially comprises the following steps: selection of wire coiling steel is carried out; the wire coiling steel is subjected to acid cleaning with a hydrochloric acid solution; alkaline liquor is used for neutralizing; high pressure water is used for flushing, presetting and cleaning are carried out; a first five-stand tandem rolling mill, a second five-stand tandem rolling mill, a third five-stand tandem rolling mill, a fourth five-stand tandem rolling mill and a fifth five-stand tandem rolling mill are used for primary rolling; a polished rod reciprocating winding displacement and winding machine is used for winding displacement and winding; a first three-stand tandem finishing mill, a second three-stand tandem finishing mill and a third three-stand tandem finishing mill are used to roll semifinished flat steel, and the finished flat steel with the width tolerance being less than 0.08mm, the thickness tolerance being less than 0.05mm and the surface smoothness Ra being 0.08-0.13 is formed, wherein width control mechanisms are arranged at inlets of the first three-stand tandem finishing mill, the second three-stand tandem finishing mill and the third three-stand tandem finishing mill and on-line grinding roll devices are arranged on rolls of the first three-stand tandem finishing mill, the second three-stand tandem finishing mill and the third three-stand tandem finishing mill. With the adoption of the method, the width tolerance of the rolled flat steel can be reduced, the surface smoothness of the rolled flat steel can be improved, the equipment investment can be reduced and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a flat steel rolling method. Specifically, it is a method of using high-precision bright flat steel formed by cold rolling of wire rods. Background technique [0002] It is known in the flat steel production industry that there are mainly two ways to obtain flat steel, one is to cut it from wider strips, and the other is to obtain it by hot-rolling flat steel bars first and then cold drawing. Although the former one can achieve a bright surface, the thickness cannot be limited. If the thickness is too large, it cannot be cut separately. The split-cut flat steel not only has a large width tolerance (up to 0.2mm), but also generates split-cut burrs on both longitudinal sides. In order to eliminate the burrs of the cutting, it is necessary to equip the equipment for eliminating the burrs, which makes the equipment investment more. The latter can guarantee the thickness tolerance requirements, but there are defects such as poor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/08B21B45/02B21B15/00B21B37/22B21B28/04C23G3/02
CPCB21B1/0805B21B15/00B21B28/04B21B37/22B21B45/0269B21B2015/0057B21B2015/0064C23G3/02
Inventor 周贤平周毅
Owner WUXI TIANCHI STEEL BAND CO LTD
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