Process for producing steel containing alumium low carbon low ilicon by small square blank continuous caster

A billet continuous casting, low-carbon and low-silicon technology, applied in the manufacture of converters, etc., can solve the problems of high labor intensity, many processes, and high production costs, and achieve good results

Inactive Publication Date: 2005-03-23
SHOUGANG CORPORATION
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ML12-20Al steel produced by this method has many processes, high labor intensity, low yield and high production cost.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention can be implemented in iron and steel complexes. The following is the example of the third steelmaking plant of Shougang-the third wire rod plant, which adopts the present invention to produce ML15Al steel.

[0028] The process route is: hot metal desulfurization and slag removal→3rd steelmaking 80t converter smelting→slag blocking and tapping→ladle deoxidation and alloying→ladle slag modification→LF ladle refining→feeding Al wire and Ca wire→argon soft blowing at the bottom of the ladle→130mm 2 Billet casting machine → billet surface quality inspection → high-speed wire rolling mill rolling ∮ 6.5 ~ 14mm wire rod (or profile rolling mill rolling ∮ 16 ~ 25mm bar) → slow cooling after rolling → finished product packaging.

[0029] Stoves

[0030] Stoves

[0031] Stoves

[0032] Stoves

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 relates to a method of making small billet casting with low carbon, low silicon aluminium-containing steel. Its features lie in: the converter adopts the double-slag operation, controls the carbon 0.08% to 0.18% in the end and the temperature of 1640deg.C to 1680deg.C and output the steel while fencing off the slag. Final deoxidization by the Al-Mn-Fe and adding the steel of the 3.0kg / t to 5.0kg / t and 200ky to 400kg of slag into every converter. Controlling the destination degree of the oxygen less than 10ppm, according to 0.02% to 0.035% of the middle package, 0.03% to 0.05% of leaving the station after being refined, 0.002% to 0.01% of leaving the place after being refined and 0.025% to 0.038% of reaching the destination after being refined, adjusting the Ca-Si line according to 0.1 of the Ca / Si after feeding the Al. The invention can stabilize the Als between 0.02% and 0.05%.

Description

[0001] Field [0002] The invention relates to a production method of billet continuous casting ML12-20Al steel, which is especially suitable for the production of billet continuous casting low-carbon, low-silicon and aluminum-killed steel. Background technique [0003] The traditional process of domestic production of ML12-20Al steel is: converter or electric furnace smelting → pouring die-casting ingot or bloom casting machine pouring billet → blooming billet → wire rod or bar rolling mill rolling. The ML12-20Al steel produced by this method has many procedures, high labor intensity, low yield and high production cost. With the technical progress of the metallurgical industry, the traditional die-casting production process is gradually replaced by the continuous casting process, and the production cost is gradually reduced. Therefore, it is an important topic to study the production of ML12-20Al low-carbon, low-silicon and aluminum-killed steel by continuous casting process....

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
Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C7/04C22C33/04
Inventor 许晓东李永东李本海曾利王丽萍于广石刘光明
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