Smelting method for stably increasing content of boron in boron-containing steel
A smelting method and technology for boron content, applied in the field of iron and steel metallurgy, can solve the problems of unstable content, low boron recovery rate, affecting boron recovery rate, etc. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0028] Taking LF refining 10B21 high-strength cold heading steel as an example, it includes the following procedures and steps:
[0029] A. Molten steel adopts 50 tons of LD converter top-bottom compound blowing, when the amount of molten steel in the tapping ladle reaches 10.5t, add high-carbon ferromanganese 10.8kg / t to the ladle 钢 , high carbon ferrochrome 2.8kg / t 钢 , core aluminum 2.5kg / t 钢 Carry out deoxidation alloying, the alloy addition sequence is: high-carbon ferromanganese→high-carbon ferrochromium→iron core aluminum, the tapping process adopts slag washing and the whole bottom argon blowing process, and 4.0kg / t of lime is added to the bottom of the ladle before tapping 钢 , Refining slag 1.2kg / t 钢 , Argon gas flow control is 26 ~ 28NL / min;
[0030] B. The molten steel is hoisted to the argon station, and the oxygen activity is 35×10 after the oxygen is fixed. -6 (The mass ratio of oxygen to molten steel, the same below), adding 0.60kg / t of aluminum and iron 钢 ,...
Embodiment 2
[0036] Taking LF refining 10B21 high-strength cold heading steel as an example, it includes the following procedures and steps:
[0037] A. Molten steel adopts 50 tons of LD converter top-bottom composite blowing. When the amount of molten steel in the tapping ladle reaches 11 tons, add high-carbon ferromanganese, high-carbon ferrochrome, and iron core aluminum to the ladle for deoxidation and alloying. The deoxidation and alloying sequence is as follows: : High-carbon ferromanganese → high-carbon ferrochromium → iron core aluminum, the addition amount is controlled as follows: high-carbon ferromanganese 10.0kg / t 钢 , high carbon ferrochrome 3.1kg / t 钢 , core aluminum 2.0kg / t 钢 ;The tapping process adopts slag washing and full bottom argon blowing process, adding lime 4kg / t to the bottom of the ladle before tapping 钢 , Refining slag 1.20kg / t 钢 , Argon gas flow control is 30NL / min;
[0038] B. The molten steel is hoisted to the argon station, and the oxygen activity is 30×10 ...
Embodiment 3
[0044] Taking LF refining 10B21 high-strength cold heading steel as an example, it includes the following procedures and steps:
[0045] A. Molten steel adopts 50 tons of LD converter top-bottom combined blowing. When the amount of molten steel in the tapping ladle reaches 10.5t, add high-carbon ferromanganese, high-carbon ferrochrome, and iron core aluminum to the ladle for deoxidation alloying. The deoxidation alloying sequence It is: high carbon ferromanganese → high carbon ferrochrome → core aluminum, the amount of addition is controlled as: high carbon ferromanganese 9.8kg / t 钢 , high carbon ferrochrome 2.3kg / t 钢 , core aluminum 1.6kg / t 钢 ; The tapping process adopts slag washing and full bottom argon blowing process, adding lime 4 kg / t to the bottom of the ladle before tapping 钢 , Refining slag 1.20kg / t 钢 , Argon gas flow control is 26NL / min;
[0046] B. The molten steel is hoisted to the argon station, and the oxygen activity is 35×10 after the oxygen is fixed. -6 ,...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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