Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-basicity synthetic slag for external refining

An out-of-furnace refining and low alkalinity technology, which is applied in the field of synthetic slag in the metallurgical field, can solve the problems of easy agglomeration and corrosion of ladles, etc., and achieve the effects of inhibiting ladle erosion, superior cold drawing performance, and good control level

Active Publication Date: 2012-03-21
NANJING IRON & STEEL CO LTD
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose a low-alkalinity slag used in the out-of-furnace refining of spring steel and cord steel that is easy to corrode and agglomerate in the production process. Synthetic slag can effectively inhibit ladle erosion while realizing plasticization of inclusions

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
  • Low-basicity synthetic slag for external refining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The low-basicity synthetic slag used for refining outside the furnace in this embodiment consists of the following components by weight percentage: CaO: 37.27%, SiO 2 : 41.64%, Al 2 o 3 : 3.81%, MgO: 8.86%, CaF 2 : 6.78%, FeO: 0.89%, and the balance is other unavoidable impurities.

Embodiment 2

[0017] The low-basicity synthetic slag used for refining outside the furnace in this embodiment consists of the following components by weight percentage: CaO: 39.33%, SiO 2 : 36.71%, Al 2 o 3 : 3.78%, MgO: 10.53%, CaF 2 : 7.62%, FeO: 1.16%, and the balance is other unavoidable impurities.

Embodiment 3

[0019] The low-basicity synthetic slag used for refining outside the furnace in this embodiment consists of the following components by weight percentage: CaO: 30.52%, SiO 2 : 44.97%, Al 2 o 3 : 5.00%, MgO: 9.10%, CaF 2 : 9.03%, FeO: 1.36%, and the balance is other unavoidable impurities.

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 synthetic slag in the metallurgy field, in particular to a low-basicity synthetic slag for external refining. The low-basicity synthetic slag for external refining consists of the following components according to weight percentage: 30 to 40 percent of CaO, 35 to 45 percent of SiO, lower than or equal to 5 percent of Al2O3, 8 to 15 percent of MgO, 6 to 15 percent of CaF2, lower than or equal to 2 percent of FeO, the rest of the components is unavoidable impurities, and the sum of all the components is 100 percent. Due to the low-basicity synthetic slag for external refining disclosed by the invention, steel ladles can be effectively inhibited from corrosion while the impurities are plasticized, the control levels of the impurities of the manufactured spring steels and core thread wire rods steel are good, the cold drawing property is excellent, the widths of the impurities of the wire rods are stabilized below 10um, and most of the widths of the impurities of the wire rods are less than 5um.

Description

technical field [0001] The invention relates to a synthetic slag in the field of metallurgy, specifically a low-alkalinity synthetic slag for refining outside the furnace, especially suitable for smelting spring steel, cord steel and other steel types that require extremely high plasticization of inclusions. Low alkalinity synthetic slag containing fluorine and magnesium for external refining. Background technique [0002] In recent years, with the rapid development of China's automobile industry, the market demand for spring steel and cord steel is increasing. According to statistics, the domestic supply and demand for spring steel will be more than 1.5 million tons in 2010, and the demand for cord steel will be more than 1.5 million tons. The supply and demand will be more than 600,000 tons. The important parts of the automobile engine, the valve spring, the suspension spring of the shock absorber system, the clutch spring and the steel cord for the automobile tire, etc. ...

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): C21C7/076
CPCY02P10/20
Inventor 沈朴恒王德炯
Owner NANJING IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com