A kind of high-strength corrosion-resistant and cold-resistant hot-rolled steel coil and its production method and application

A hot-rolled steel coil and corrosion-resistant technology, which is applied in the field of hot-rolled steel coils, can solve problems such as cold resistance and corrosion resistance that cannot meet environmental requirements, poor deformation performance of solar brackets, etc., to avoid deformation, improve welding performance, and improve shape Effect

Active Publication Date: 2022-07-29
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the poor deformation performance of the existing solar support and the cold and corrosion resistance that cannot meet the environmental requirements, the present invention provides a high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil

Method used

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  • A kind of high-strength corrosion-resistant and cold-resistant hot-rolled steel coil and its production method and application
  • A kind of high-strength corrosion-resistant and cold-resistant hot-rolled steel coil and its production method and application

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Experimental program
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Effect test

Embodiment 1

[0031] This embodiment provides a high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil, which, in terms of weight percentage, includes the following components: C: 0.15%, Si: 0.1%, Mn: 0.025%, P: 0.020%, S: 0.010%, ALs: 0.02%, Ti: 0.025%, Cu: 0.1%, Cr: 0.3%, V: 0.01%, and the rest are iron and inevitable impurities.

[0032] The production method of the above-mentioned high-strength corrosion-resistant and cold-resistant hot-rolled steel coil comprises the following steps:

[0033] 150-ton converter for vanadium extraction, 150-ton converter for smelting, LF refining, and continuous casting to obtain slabs with a thickness of 200 mm;

[0034] The slab is heated in a heating furnace, the heating time is 120min, and the heating temperature is 1200℃;

[0035] After the slab is released from the heating furnace, it is descaled by high-pressure water with a pressure of 20MPa;

[0036] The above-mentioned slab is then rolled through a rough rolling mill for ...

Embodiment 2

[0039] This embodiment provides a high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil, which, in terms of weight percentage, includes the following components: C: 0.20%, Si: 0.08%, Mn: 0.055%, P: 0.018%, S: 0.008%, ALs: 0.06%, Ti: 0.050%, Cu: 0.2%, Cr: 0.6%, V: 0.03%, and the rest are iron and inevitable impurities.

[0040] The production method of the above-mentioned high-strength corrosion-resistant and cold-resistant hot-rolled steel coil comprises the following steps:

[0041] 150-ton converter for vanadium extraction, 150-ton converter for smelting, LF refining, and continuous casting to obtain slabs with a thickness of 200 mm;

[0042] The slab is heated in a heating furnace, the heating time is 200min, and the heating temperature is 1260℃;

[0043] After the slab is released from the heating furnace, it is descaled by high-pressure water with a pressure of 20MPa;

[0044] The above-mentioned slab is then rolled through a rough rolling mill for...

Embodiment 3

[0047] This embodiment provides a high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil, which, in terms of weight percentages, includes the following components: C: 0.18%, Si: 0.05%, Mn: 0.040%, P: 0.015%, S: 0.007%, ALs: 0.05%, Ti: 0.040%, Cu: 0.2%, Cr: 0.5%, V: 0.02%, and the rest are iron and inevitable impurities.

[0048] The production method of the above-mentioned high-strength corrosion-resistant and cold-resistant hot-rolled steel coil comprises the following steps:

[0049] 150-ton converter for vanadium extraction, 150-ton converter for smelting, LF refining, and continuous casting to obtain slabs with a thickness of 200 mm;

[0050] The slab is heated in a heating furnace, the heating time is 130min, and the heating temperature is 1240℃;

[0051] After the slab is released from the heating furnace, it is descaled by high-pressure water with a pressure of 20MPa;

[0052] The above-mentioned slab is then rolled through a rough rolling mill for ...

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Abstract

The invention relates to the technical field of hot-rolled steel coils, and specifically discloses a high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil and a production method and application thereof. The high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil includes the following components in weight percentage: C: 0.15% to 0.20%, Si≤0.1%, Mn: 0.025% to 0.055%, P≤0.020%, S≤0.010%, ALs: 0.02% to 0.06%, Ti: 0.025% to 0.050%, Cu: 0.10% to 0.20%, Cr: 0.30% to 0.60%, V: 0.01% to 0.03%, and the rest are iron and inevitable impurities. In the invention, titanium, copper, vanadium, chromium, manganese and other elements are added to the steel, so that the hot-rolled steel coil has excellent deformation properties, and also has the functions of high strength, corrosion resistance and cold resistance.

Description

technical field [0001] The invention relates to the technical field of hot-rolled steel coils, in particular to a high-strength, corrosion-resistant and cold-resistant hot-rolled steel coil and a production method and application thereof. Background technique [0002] Photovoltaic power generation, as a new way of electric energy production, shows an extremely broad development space and application prospect with its characteristics of no pollution, no noise, and simple maintenance. It is the most potential green energy source. Currently in the photovoltaic power generation industry, solar brackets mainly use carbon structural steel Q235B, SS400, etc., which are prone to cracking due to poor plasticity during processing and deformation, which in turn affects the yield of solar brackets. Due to the large-scale construction of photovoltaic power generation, the number of photovoltaic brackets used is large, and the environment where photovoltaic power generation is located is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/20C22C38/24C22C38/28C22C33/04C21D8/02
CPCC22C38/02C22C38/04C22C38/06C22C38/28C22C38/20C22C38/24C22C33/04C21D8/0205C21D8/0226C21D8/0247
Inventor 梁静召刘道孟张超校军立张之晓刘景辉沙毅王志磊
Owner HEBEI IRON AND STEEL
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