Argon blowing refining method for producing steel plate heat commercial (SPHC) steel
A technology of argon blowing refining and steel grades, which is applied in the manufacture of converters, etc., can solve the problems of inability to carry out mass production, nesting, and heavy corrosion of converter linings, so as to prevent secondary oxidation of molten steel and slag entrainment, and slow down The liquid level of molten steel fluctuates greatly, promoting the effect of floating and removing
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A kind of argon blowing refining method for producing SPHC steel grade, comprises the following steps:,
[0029] 1) Desulfurization of molten iron with a sulfur content of 0.012%;
[0030] 2) Al-Mn-Fe alloy is used for deoxidation when tapping the converter, and the addition amount is 3.3kg / t steel, so that the content of acid-soluble aluminum in the steel is controlled at 0.02%;
[0031] 3) When tapping the converter, add SPHC special pre-slag 500kg / furnace and 800Kg granular lime along with the steel flow, use a sliding plate to stop the slag when tapping, so that the thickness of the steel slag in the ladle is 60mm, the end point of the converter: carbon content 0.03%, oxygen content 600ppm, Tapping temperature 1630°C;
[0032] 4) Enter the LF refining furnace to measure the temperature and determine the oxygen: enter the LF refining furnace, blow the permeable brick at the bottom of the ladle into the station and stir for 2 minutes, the argon pressure is 0.8Mpa, an...
Embodiment 2
[0044] A kind of molten steel purification method that is used for SPHC steel class as described in embodiment 1, difference is:
[0045] A kind of argon blowing refining method for producing SPHC steel grade, comprises the following steps:,
[0046] 1) Desulfurization of molten iron with a sulfur content of 0.010%;
[0047] 2) Al-Mn-Fe alloy is used for deoxidation when tapping the converter, and the addition amount is 3.5kg / t steel, so that the content of acid-soluble aluminum in the steel is controlled to 0.04%;
[0048] 3) When tapping the converter, add 800kg / furnace of special SPHC slag and 500Kg of granular lime along with the steel flow. The slag in the early stage and the slag in the later stage are all used to block the slag with a slide plate, so that the thickness of the steel slag in the ladle is 50mm. The control target of the converter end point: carbon content 0.04%, the oxygen content is 500ppm, and the tapping temperature is 1650℃;
[0049] 4) Enter the LF ...
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