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Anti-acid steel plate for steel structure work

A technology of steel structure and steel plate, applied in the field of steel plate, can solve the problems of no acid resistance, damage, safety hazard, etc., and achieve the effect of improving acid resistance and avoiding the formation of banded structure.

Inactive Publication Date: 2015-06-10
SUZHOU JIN YUAN OIL MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steel structures have been adopted by many enterprises in the construction industry, but most of them have implemented steel structures in the new construction industry in order to optimize structures, save resources, and recycle, but they have also brought many defects and safety problems in steel structure workshops. Hidden dangers, most business owners in steel structure enterprises focus on promoting the advantages of steel structures while ignoring the defects and hidden dangers of safety
Especially the acid resistance of steel plates used in steel structure engineering, because most of the steel plates used in steel structures do not have acid resistance, they often corrode the steel plates, resulting in damage to steel structures in a short period of time, increasing construction costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] This embodiment is an acid-resistant steel plate used in steel structure engineering. The composition and mass percentage of the steel plate are: C: 0.27%, Mn: 0.35%, Si: 0.17%, P: 0.006%, S: 0.002%, Nb: 0.03%, V: 0.04%, Ti: 0.15%, Al: 0.018%, N: 0.006%, H: 0.00020%, Cu: 0.022%, Ni: 1.65%, Cr: 0.54%, Mo: 0.13%, The balance is Fe and unavoidable impurities;

[0014] After rolling, the steel plate is heat-treated by a heat treatment process of normalizing-secondary normalizing-tempering, the normalizing temperature is 930°C, and the first cooling process is used to cool to room temperature; the secondary normalizing temperature is 760°C , using the second cooling process to cool to room temperature; the tempering temperature is 640 ° C, using the third cooling process to cool to room temperature;

[0015] The first cooling process: first use water cooling to cool the steel to 720°C at a cooling rate of 12°C / s, then air cool to 650°C, and then use compressed air or mist q...

Embodiment 2

[0018] This embodiment is an acid-resistant steel plate used in steel structure engineering. The composition and mass percentage of the steel plate are: C: 0.28%, Mn: 0.36%, Si: 0.18%, P: 0.007%, S: 0.003%, Nb: 0.04%, V: 0.05%, Ti: 0.16%, Al: 0.019%, N: 0.002%, H: 0.0001%, Cu: 0.023%, Ni: 1.667%, Cr: 0.55%, Mo: 0.14%, The balance is Fe and unavoidable impurities;

[0019] After the steel plate is rolled, heat treatment is carried out using a heat treatment process of normalizing-secondary normalizing-tempering, the normalizing temperature is 940°C, and the first cooling process is used to cool to room temperature; the secondary normalizing temperature is 770°C , using the second cooling process to cool to room temperature; the tempering temperature is 650 ° C, using the third cooling process to cool to room temperature;

[0020] Among them, the first cooling process: first use water cooling to cool the steel to 730°C at a cooling rate of 13°C / s, then air cool to 660°C, and th...

Embodiment 3

[0023] This embodiment is an acid-resistant steel plate used in steel structure engineering. The composition and mass percentage of the steel plate are: C: 0.29%, Mn: 0.37%, Si: 0.19%, P: 0.008%, S: 0.005%, Nb: 0.05%, V: 0.06%, Ti: 0.17%, Al: 0.19%, N: 0.001%, H: 0.0001%, Cu: 0.024%, Ni: 1.67%, Cr: 0.56%, Mo: 0.15%, The balance is Fe and unavoidable impurities;

[0024] After the steel plate is rolled, heat treatment is carried out using a heat treatment process of normalizing-secondary normalizing-tempering, the normalizing temperature is 950°C, and the first cooling process is used to cool to room temperature; the secondary normalizing temperature is 780°C , using the second cooling process to cool to room temperature; the tempering temperature is 660 ° C, using the third cooling process to cool to room temperature;

[0025] Among them, the first cooling process: first use water cooling to cool the steel to 750°C at a cooling rate of 15°C / s, then air cool to 670°C, and then...

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Abstract

The invention discloses an anti-acid steel plate for steel structure work. The anti-acid steel plate for the steel structure work comprises, by weight, 0.27%-0.29% of C, 0.35%-0.37% of Mn, 0.17%-0.19% of Si, 0.006%-0.008% of P, 0.002%-0.005% of S, 0.03%-0.05% of Nb, 0.04%-0.06% of V, 0.15%-0.17% of Ti, 0.018%-0.019% of Al, equal and less than 0.06% of N, equal and less than 0.00020% of H, 0.022%-0.024% of Cu, 1.65%-1.67% of Ni, 0.54%-0.56% of Cr, 0.13%-0.15% of Mo, and the balance is Fe and inevitable impurities. The heating processing technology of normalizing-secondary normalizing-tempering is adopted to carry out heating processing, and the good toughness and the anti-acid property are provided.

Description

technical field [0001] The invention relates to a steel plate, in particular to an acid-resistant steel plate used in steel structure engineering. Background technique [0002] Steel structure engineering is a structure mainly made of steel, which is one of the main types of building structures. Steel structure is one of the more common structural forms in modern construction engineering. Steel structures have been adopted by many enterprises in the construction industry, but most of them have implemented steel structures in the new construction industry in order to optimize structures, save resources, and recycle, but they have also brought many defects and safety problems in steel structure workshops. Hidden dangers, in steel structure enterprises, most business owners focus on promoting the advantages of steel structures and ignore the defects and hidden dangers of safety. Especially the acid resistance of the steel plates used in steel structure engineering, because mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/50C21D8/02
Inventor 黄龙海黄瑶琼吴磊
Owner SUZHOU JIN YUAN OIL MACHINERY
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