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Method for machining hot rolled steel strips

A technology for hot-rolled strip and hot-rolled coil, applied in metal processing equipment, heat treatment furnace, metal rolling, etc. The effect of improving the pass rate, improving labor productivity and stable product quality

Active Publication Date: 2016-11-23
湖北大帆金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Affected by the current method of processing hot-rolled steel strip, the quality of the produced steel strip is not stable enough, and unqualified products are prone to appear in the production process, resulting in relatively low overall production efficiency

Method used

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  • Method for machining hot rolled steel strips

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Effect test

Embodiment 1

[0030] Embodiment one: if figure 1 Shown, a kind of method for processing hot-rolled steel strip, comprises the steps:

[0031] Step 1, preparing raw materials, selecting a hot-rolled coil plate whose brand name is BJS15C;

[0032] Step 2, the first slitting and slitting, transfer the hot-rolled coil prepared in step 1 to the first large slitting production line through the crane device for the first slitting and slitting, in order to facilitate subsequent processing, When the hot-rolled coil is slitting, a margin of about 0.5mm is reserved in the width direction. The allowable deviation of the thickness of the hot-rolled coil should comply with the regulations of GB / T709. 40μm; the thickness is 3mm to 8.0mm, the convexity is less than or equal to 60μm, the thickness is greater than 8.0mm, the convexity is less than or equal to 100μm, the surface of the hot-rolled coil must not have bubbles, cracks, scars, warping, cracking and inclusions, hot-rolled Coils must not be delami...

Embodiment 2

[0039] Embodiment two: if figure 1 Shown, a kind of method for processing hot-rolled steel strip, comprises the steps:

[0040] Step 1, preparing raw materials, selecting a hot-rolled coil plate whose brand name is BJS15C;

[0041] Step 2, the first slitting and slitting, transfer the hot-rolled coil prepared in step 1 to the first large slitting production line through the crane device for the first slitting and slitting, in order to facilitate subsequent processing, When the hot-rolled coil is slitting, a margin of about 0.5mm is reserved in the width direction. The allowable deviation of the thickness of the hot-rolled coil should comply with the regulations of GB / T709. 40μm; the thickness is 3mm to 8.0mm, the convexity is less than or equal to 60μm, the thickness is greater than 8.0mm, the convexity is less than or equal to 100μm, the surface of the hot-rolled coil must not have bubbles, cracks, scars, warping, cracking and inclusions, hot-rolled Coils must not be delami...

Embodiment 3

[0048] Embodiment three: as figure 1 Shown, a kind of method for processing hot-rolled steel strip, comprises the steps:

[0049] Step 1, preparing raw materials, selecting a hot-rolled coil plate whose brand name is BJS15C;

[0050] Step 2, the first slitting and slitting, transfer the hot-rolled coil prepared in step 1 to the first large slitting production line through the crane device for the first slitting and slitting, in order to facilitate subsequent processing, When the hot-rolled coil is slitting, a margin of about 0.5mm is reserved in the width direction. The allowable deviation of the thickness of the hot-rolled coil should comply with the regulations of GB / T709. 40μm; the thickness is 3mm to 8.0mm, the convexity is less than or equal to 60μm, the thickness is greater than 8.0mm, the convexity is less than or equal to 100μm, the surface of the hot-rolled coil must not have bubbles, cracks, scars, warping, cracking and inclusions, hot-rolled Coils must not be dela...

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Abstract

The invention relates to a method for machining hot rolled steel strips. The method includes the following steps that a hot-rolled coiled plate with the grade being BJS15C is selected; the first time of longitudinal-shearing splitting is conducted through a first large longitudinal-shearing production line to prepare split coiled plates; acid pickling is conducted on the split coiled plates obtained through the first time of longitudinal-shearing splitting to prepare acid-pickled coiled plates; rolling is conducted on the acid-pickled coiled plates obtained through acid pickling, to prepare rolled coiled plates; spheroidizing annealing is conducted on the rolled coiled plates obtained through rolling to prepare spheroidizing-annealed coiled plates; fine rolling is conducted on the spheroidizing-annealed coiled plates obtained through spheroidizing annealing to prepare fine-rolled coiled plates; the second time of longitudinal-shearing splitting is conducted on the fine-rolled coiled plates obtained through fine rolling to prepare split coiled plates; and the split coiled plates are packaged and put in storage. The method has the beneficial effects that the product quality can be stabilized, and the labor productivity can be improved.

Description

technical field [0001] The invention relates to the technical field of strip steel production and processing, in particular to a method for processing hot-rolled strip steel. Background technique [0002] As we all know, strip steel is a narrow and long steel plate produced to meet the needs of different industrial sectors. Strip steel is supplied in coils and has the advantages of high dimensional accuracy, good surface quality, easy processing, and material saving. It is widely used in the production of welded steel pipes, as blanks for cold-formed steel, etc. [0003] Affected by the current method of processing hot-rolled steel strips, the quality of the produced steel strips is not stable enough, and unqualified products are prone to appear in the production process, resulting in relatively low overall production efficiency. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a method for processing hot-rolled ...

Claims

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Application Information

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IPC IPC(8): B21B1/26B21B38/00C21D1/32C21D9/54
CPCB21B1/22B21B1/26B21B15/0007B21B38/00B21B2201/06B21C37/02C21D1/32C21D8/0247C21D9/54C23G1/08
Inventor 宁立峥
Owner 湖北大帆金属制品有限公司
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