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Medium-strength packaging steel strip and production method thereof

A production method and packaging technology, which is applied in the production field of medium-strength packaging steel strips and medium-strength packaging steel strips, and can solve the problems of high elongation after breaking and unstable tensile strength greater than 800MPa

Active Publication Date: 2010-11-17
上海宝钢新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first aspect of the purpose of the present invention is to propose a medium-strength packaging steel strip to solve the problem of using cold-rolled coils with a carbon content below 0.10%. The technical problem that the tensile strength of the steel belt for packaging cannot be stabilized greater than 800MPa, and the elongation after breaking is greater than 6%

Method used

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  • Medium-strength packaging steel strip and production method thereof
  • Medium-strength packaging steel strip and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Select a carbon steel with the following components: C: 0.07%, Si: 0.10%, Mn: 1.27%, P: 0.008%, S: 0.001%, the balance is Fe, and the percentages are weight percentages.

[0043] The above-mentioned carbon steel hot-rolled plate is selected as a raw material, and is pickled and cold-rolled into a steel strip of 0.9×389mm. The mechanical properties after cold-rolling are: tensile strength is 875MPa, and elongation is 6%. Then enter the production line that realizes the production method of the present invention, produce by the process method of the present invention, the whole production process steel strip running speed is 40m / min, and the blueing temperature is 440 ℃, and the heat preservation time is about 20s, after 30 After cooling in water at ℃, the paint is dried, and the finished product is put into storage after being coiled by a coiler.

[0044] The mechanical properties of the obtained finished product are: tensile strength 830Mpa, elongation 7%.

Embodiment 2

[0046]Select a carbon steel with the following components: C: 0.08%, Si: 0.15%, Mn: 1.27%, P: 0.008%, S: 0.001%, and the balance is Fe, and the percentages are weight percentages.

[0047] The above-mentioned carbon steel hot-rolled plate is selected as a raw material, and is pickled and cold-rolled into a steel strip of 0.9×389mm. The mechanical properties after cold-rolling are: the tensile strength is 870MPa, and the elongation is 6%. Then enter the production line that realizes the production method of the present invention, produce by the process method of the present invention, the whole production process steel strip running speed is 40m / min, and the blueing temperature is 440 ℃, and the heat preservation time is about 20s, after 30 After cooling in water at ℃, the paint is dried, and the finished product is put into storage after being coiled by a coiler.

[0048] The mechanical properties of the obtained finished product are: tensile strength 840Mpa, elongation 8%.

Embodiment 3

[0050] Select a carbon steel with the following components: C: 0.05%, Si: 0.12%, Mn: 1.22%, P: 0.009%, S: 0.002%, and the balance is Fe, and the percentages are weight percentages.

[0051] The above-mentioned carbon steel hot-rolled plate is selected as a raw material, and is pickled and cold-rolled into a steel strip of 0.9×389 mm. The mechanical properties after cold rolling are: tensile strength is 860 MPa, and elongation is 5%. Then enter the production line that realizes the production method of the present invention, produce by the process method of the present invention, the whole production process steel strip running speed is 40m / min, and the blueing temperature is 420 ℃, and the heat preservation time is about 20s, after 30 After cooling in water at ℃, the paint is dried, and the finished product is put into storage after being coiled by a coiler.

[0052] The mechanical properties of the obtained finished product are: tensile strength 810Mpa, elongation 9%.

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Abstract

The invention relates to a steel strip, in particular to a medium-strength packaging steel strip and a production method thereof. The medium-strength packaging steel strip comprises the following components in percentage by weight: 0.05 to 0.10 percent of C, 0.10 to 0.15 percent of Si, 1.00 to 1.55 percent of Mn, less than or equal to 0.05 percent of P, less than or equal to 0.050 percent of S and the balance of Fe. The production method of the medium-strength packaging steel strip comprises the following steps: a) cold-rolled roll unrolling; b) steel strip longitudinal cutting and stripping; c) surface blueing; d) cooling and washing; e) painting; f), drying coatings; and g) rolling. The medium-strength packaging steel strip solves the technical problem that the packaging steel strip produced by using a cold-rolled roll with a carbon content of less than 0.10 percent has a tensile strength which cannot be kept over 800MPa stably and a breakage elongation of more than 6 percent.

Description

technical field [0001] The invention relates to a steel strip, in particular to a medium-strength packaging steel strip, and also relates to a production method of the medium-strength packaging steel strip. Background technique [0002] Packaging steel belt, also known as strapping or steel belt, is a narrow strip packaging material with high tensile strength and certain elongation. It is widely used in the packaging and bundling of steel industry, construction industry, non-ferrous metal industry, glass industry, machinery industry and other products. [0003] According to the classification in the European standard EN13246: 2001 edition, the tensile strength of steel strips for medium-grade packaging is ≥750MPa. In "Table 7 Mechanical Properties of Steel Strips" in China's ferrous metallurgical industry standard YB / T025-2002 steel strips for packaging, the medium-strength level standard is tensile strength ≥ 785MPa, elongation ≥ 6%. In the technical requirements of Baosh...

Claims

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Application Information

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IPC IPC(8): C22C38/04C23C8/14B05D7/14
Inventor 俞晓峰杨乃忠韩建春
Owner 上海宝钢新材料技术有限公司
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