High manganese and high aluminous steel covering slag containing ferric oxide and application thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of ferric oxide and mold slag, which is applied in the field of iron and steel smelting and continuous casting, can solve the problems of deterioration of lubrication and control of heat transfer, achieve good physical and chemical properties, inhibit slag-steel reaction, and ensure smooth progress
Active Publication Date: 2017-12-15
CENT SOUTH UNIV
View PDF7 Cites 6 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The mold flux can effectively inhibit the slag-steel reaction and reduce the probability of slag entrainment, but the mold flux is added flux (Na 2 O. Li 2 O, F - ) content is too small, which will lead to high melting point of mold slag, thin slag layer of mold slag on molten steel surface, liquid slag cannot smoothly flow into the gap between billet and mold wall, thus deteriorating lubrication and important functions such as controlling heat transfer
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] Ingredients: CaO 27.92%, Al 2 o 3 24.78%, SiO 2 11.6%, Na 2 O 9.2%, Li 2 O 3.6%, MnO 3.2%, BaO 6.8%, F ‐ 9.6%, Fe 2 o 3 3.3%, (CaO+BaO) / Al 2 o 3 1.405, Fe 2 o 3 / SiO 2 is 0.284.
[0037] Preparation process: Weigh the above-mentioned mold slag raw materials according to the target components, and perform mechanical stirring to make the components evenly mixed, and then use an intermediate frequency induction furnace to heat and melt the mixed samples to remove volatiles and gas substances, and form complex Solid solution, the molten slag is poured into water and quenched to obtain a glassy mold slag block, and the mold slag block is mechanically crushed and ground to obtain the required mold slag powder.
[0038] The main physical properties of mold flux are shown in Table 1.
Embodiment 2
[0040] Ingredients: CaO 27.13%, Al 2 o 3 24.06%, SiO 2 11.81%, Na 2 O 9.1%, Li 2 O 3.9%, MnO 3.3%, BaO 6.7%, F ‐ 9.3%, Fe 2 o 3 4.7%, (CaO+BaO) / Al 2 o 3 1.406, Fe 2 o 3 / SiO 2 is 0.398.
[0041] Preparation process: with embodiment 1.
[0042] The main physical properties of mold flux are shown in Table 1.
Embodiment 3
[0044] Ingredients: CaO 26.58%, Al 2 o 3 23.7%, SiO 2 11.22%, Na 2 O 9.2%, Li 2 O 3.7%, MnO 3.9%, BaO 6.6%, F ‐ 9.2%, Fe 2 o 3 5.9%, (CaO+BaO) / Al 2 o 3 1.400, Fe 2 o 3 / SiO 2 is 0.526.
[0045] Preparation process: with embodiment 1.
[0046] The main physical properties of mold flux are shown in Table 1.
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
Property
Measurement
Unit
viscosity
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses high manganese and high aluminous steel continuous casting covering slag containing ferric oxide and application thereof. The covering slag comprises, by mass, 22%-32% of CaO, 19%-29% of Al2O3, 10%-16% of SiO2, 2%-8% of MnO, 6%-12% of Na2O, 2%-6% of Li2O, 4%-12% of BaO, 7%-13% of F, 2%-10% of Fe2O3, 1.3%-2.3% of (CaO+BaO) / Al2O3 and 0.2%-0.9% of Fe2O3 / SiO2. By adding a proper amount of the Fe2O3 in a controlled mode, the covering slag with the low viscosity and good crystallization property is obtained. The covering slag is applied to the high manganese and high aluminous steel slab continuous casting production process, the slag-steel reaction happening in the continuous casting process can be effectively restrained, the crystallization property and lubricating property of the covering slag in the continuous casting process are changed to be more stable, the effect that the high manganese and high aluminous steel continuous casting process can be executed smoothly is guaranteed, and the surface quality of a poured high manganese and high aluminous steel casting blank is excellent.
Description
technical field [0001] The invention belongs to the field of iron and steel smelting and continuous casting, and relates to mold mold slag for continuous casting of high manganese and high aluminum steel with good physical and chemical properties and low slag-steel reaction degree. Background technique [0002] With the development of the automobile industry and the energy industry, Al is added to steel as an alloy element, and steels with high aluminum content have become research hotspots, such as TRIP steel and TWIP steel, which are a new generation of advanced high-strength steel and are widely used in the automobile industry; Due to the active chemical properties of Al at high temperatures, Al in high-alumina molten steel will interact with SiO in mold flux 2 and other reducing substances undergo redox reactions, SiO 2 A large amount of consumption will cause the basicity of mold flux (CaO / SiO 2 ) rises sharply, while Al in mold flux 2 o 3 content significantly incr...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more