Step-by-step deoxidation operation method suitable for low-carbon steel

An operation method and low-carbon steel technology, applied in the manufacture of converters, etc., can solve problems such as easy blockage of nozzles, poor castability of molten steel, and uncertain inclusions

Inactive Publication Date: 2021-02-05
XINJIANG BAYI IRON & STEEL
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above operations will inevitably increase the total oxygen content in the steel, resulting in an increase in the consumption of the aluminum alloy deoxidized alloy
If all the deoxidation process adopts the deoxidation process of adding aluminum to the ladle, since aluminum is a strong deoxidizer, Al2O3 will be generated if the aluminum ladle is used alone for deoxi

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

[0007] A step-by-step deoxidation operation method suitable for low-carbon steel, the specific steps are as follows: the deoxidation route of producing low-carbon steel adopts the step-by-step operation method of converter + ladle for deoxidation: 1. In the early stage of tapping, aluminum-based deoxidizer is used to deoxidize the oxygen in the converter Precipitation deoxidation of molten steel not only achieves the effect of reducing the oxygen content of molten steel, but also can absorb some Al2O3 deoxidation products through the slag in the converter to reduce the total amount of deoxidation products in the ladle; 2. The molten steel after deoxidation in the converter is tapped to the ladle and used Secondary deoxidation for alloying, the deoxidation sequence from weak to strong adopts the method of calcium carbide + low carbon ferromanganese + aluminum manganese ferromanganese + silicon-calcium alloy; adopts step-by-step deoxidation, when the molten steel temperature is 15...

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 discloses a step-by-step deoxidation operation method suitable for low-carbon steel. The step-by-step deoxidation operation method comprises the following specific steps that a deoxidation route of low-carbon steel production carries out deoxidation by adopting a step-by-step operation method of a converter and a steel ladle, as follows: 1, carrying out precipitation deoxidation on molten steel in the converter by adopting an aluminum deoxidizer in the earlier stage of tapping; and 2, tapping the deoxidized molten steel in the converter to the steel ladle, and alloying by adopting secondary deoxidation, wherein the deoxidation sequence is from weak to strong by adopting a mode of calcium carbide, low-carbon ferromanganese, aluminum ferromanganese and silicon-calcium alloy.

Description

technical field [0001] The invention relates to a step-by-step deoxidation operation method suitable for low-carbon steel. Background technique [0002] With the development of my country's metallurgical industry, the production process of welded disc and round steel has changed greatly. Because it is low-carbon and low-silicon steel, in the past, my country has always adopted the method of die-casting boiling steel for production. Now the die-casting technology is gradually eliminated and turned to high efficiency. Continuous casting and rolling technology, now large and medium-sized iron and steel plants are using continuous casting and high-speed wire rolling to produce welding rod steel, but using continuous casting technology can only produce killed steel, but this has caused some quality defects, such as high gas content, Disadvantages such as high round strength and low elongation, which lead to easy breaking during deep processing, also cause instability of welding arc...

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): C21C7/06C21C5/36
CPCC21C7/06C21C5/36
Inventor 韩雨亮吴军徐卫芳
Owner XINJIANG BAYI IRON & STEEL
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