Hydrochloric acid and sulfuric acid corrosion resistant steel and preparation method thereof

A hydrochloric acid and sulfuric acid resistance technology, applied in the field of steel production, can solve problems such as rolling process and mechanical properties research, and achieve the effects of improving hydrochloric acid and sulfuric acid corrosion resistance, improving plasticity and increasing strength

Active Publication Date: 2018-04-03
SHOUGANG CORPORATION
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the existing similar products of domestic enterprises are sulfuric acid corrosion-resistant steels, and the rolling process and mechanical properties have not bee...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrochloric acid and sulfuric acid corrosion resistant steel and preparation method thereof
  • Hydrochloric acid and sulfuric acid corrosion resistant steel and preparation method thereof
  • Hydrochloric acid and sulfuric acid corrosion resistant steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The embodiment of the present invention solves the defects of poor hydrochloric acid and sulfuric acid corrosion resistance and plasticity of existing steel products by providing a hydrochloric acid and sulfuric acid corrosion resistant steel and a preparation method thereof.

[0020] In order to solve the above problems, the main ideas of the embodiments of the present invention are:

[0021] The embodiment of the present invention is resistant to hydrochloric acid and sulfuric acid corrosion steel, and its chemical composition mass percentage includes: C: 0.02-0.04%; Si: 0.2-0.4%; Mn: 0.8-1.0%; P≤0.01%; S: 0.005%-0.015 %; Cu: 0.25-0.35%; Cr: 0.3-0.4%; Ni: 0.1-0.2%; Sb: 0.05-0.15%, Sn: 0.05-0.15%, Mo: 0.05-0.15%, the rest is Fe and unavoidable of impurities.

[0022] Among them, C element is one of the most effective strengthening elements in steel, and it is also the cheapest chemical element, but C can significantly reduce the plasticity and toughness of steel. The ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides hydrochloric acid and sulfuric acid corrosion resistant steel and a preparation method thereof. The hydrochloric acid and sulfuric acid corrosion resistant steel comprises, by mass, 0.02-0.04% of C, 0.2-0.4% of Si, 0.8-1.0% of Mn, less than or equal to 0.01% of P, 0.005-0.015% of S, 0.25-0.35% of Cu, 0.3-0.4% of Cr, 0.1-0.2% of Ni, 0.05-0.15% of Sb, 0.05-0.15% of Sn, 0.05-0.15% of Mo and the balance Fe and inevitable impurities. According to the steel and the method, the low-carbon component design is adopted, and a proper amount of copper, antimony, tin and molybdenumare added to improve the corrosion the hydrochloric acid and the sulfuric acid resistance; and the solid solution strengthening is adopted as a main mode, the steel with the yield ratio being less than or equal to 0.70 and the elongation percentage being larger than or equal to 40% is prepared through the low-temperature rolling and relaxation processes, and a hydrochloric acid and sulfuric acid corrosion resistant hot-rolled steel plate with excellent plasticity is prepared.

Description

technical field [0001] The invention relates to the technical field of steel production, in particular to a hydrochloric acid and sulfuric acid corrosion-resistant steel and a production method thereof. Background technique [0002] For electric power, petrochemical and other industries, the combustion exhaust gas is mainly composed of moisture, sulfur dioxide, sulfur trioxide, hydrogen chloride, nitrogen oxides, carbon dioxide, oxygen, etc., and it is very easy to generate condensation of hydrochloric acid and sulfuric acid. Usually, the dew point temperature of sulfuric acid is 100 ℃ ~ 150 ℃ The dew point temperature of hydrochloric acid is around 50°C to 80°C. Since the temperature of the combustion gas passing through the exhaust system is constant, the dew point of hydrochloric acid and sulfuric acid will be generated at the same time due to the influence of the wall temperature of the equipment. Therefore, research and development can resist hydrochloric acid at the sam...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C38/60C22C38/02C22C38/04C22C38/42C22C38/44C22C33/04
Inventor 李文远刘锟刘杰张旭惠亚军刘晓翠李正权黄爱建赵焕春崔阳陈斌周娜杨孝鹤
Owner SHOUGANG CORPORATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap