Technological process for removing small inclusions in secondary refining
A process method, a technology of refining outside the furnace, applied in the direction of improving process efficiency, etc., can solve the problems of inability to control fine inclusions, achieve high collision probability, and achieve scientific and reasonable preparation effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0032] Transport the converter tapping to the LF station, measure the temperature and take samples, and adjust the composition; when the alloying is completed, stop blowing argon, and feed the cored wire, the line speed is 200-350m / min, and the wire feeding amount is 100-800m / t ;After feeding the line, stand still for 1-3 minutes, and then blow argon for light treatment. The casting adopts full protection pouring.
[0033] For the preparation of the cored wire, first, the low-melting point pre-melted slag is prepared by taking 40kg of CaO powder, Al 2 o 3 Powder 35kg, SiO 2 Powder 10kg, MgO powder 10kg, CaF 2 Put 5kg of powder into a mixer for uniform mixing, then melt and cool in a magnesia crucible, and then grind it into a powder with a particle size of 1nm to 3.5mm through crushing, rolling and airflow micro-powder milling, with a melting point of 1100~ Standby at 1550°C; then take 35kg of low-melting pre-melted slag powder, 5kg of calcium fluoride powder, 55kg of calc...
Embodiment 2
[0035]Transport the steel from the converter to the RH station, measure the temperature and take samples, adjust the composition, and clean the cycle. When the alloying is finished, feed the cored wire, and the wire feeding position is selected on the side of the RH downcomer. The feeding line speed is 180-350m / min, and the feeding amount is 50-800m / t. After feeding the line, the RH cycle time is 3 to 10 minutes, breaking the air, moving out, casting on the machine, and the continuous casting adopts the whole process of protective pouring.
[0036] For the preparation of cored wire, first take CaO10kg, Al 2 o 3 50kg, SiO 2 5kg, MgO5kg, CaF 2 30kg prepares low-melting point pre-melting slag, its method is the same as embodiment 1; Get its particle diameter again according to formula ratio and be that the prepared low-melting point pre-melting slag 1kg of 1nm~3.5mm, magnesium oxide 98kg, magnesium carbonate 1kg enter stand Mix the materials uniformly in a type mixer for 1-8...
Embodiment 3
[0038] Transport the steel from the converter to the CAS-OB station, measure the temperature and take samples, and adjust the composition. After the alloying is finished, feed the cored wire, the wire feeding speed is 200-350m / min, the feeding amount is 50-800m / t, and the bottom blowing argon gas is stirred after feeding the wire, and the argon gas stirring intensity is 0-0.004m 3 / (min t). Argon blowing time is 1-10min. Moved out, poured on the machine, continuous casting adopts full protection pouring.
[0039] For the preparation of cored wire, first take CaO70kg, Al 2 o 3 15kg, SiO 2 3kg, MgO2kg, CaF 2 10kg prepares low-melting point pre-melted slag, its method is the same as embodiment 1; Get its particle diameter again and be the mixture 30kg ( The proportioning of the two is not strictly required), 10kg of the mixture of calcium oxide and magnesium oxide, and 15kg of bentonite are put into a vertical mixer for uniform mixing for 1 to 8 hours, wherein the activity ...
PUM
Property | Measurement | Unit |
---|---|---|
melting point | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
particle size | aaaaa | aaaaa |
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