Micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer and preparation method 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 aluminum-magnesium-calcium alloy and calcium alloy is applied in the field of metallurgy, which can solve the problems of low melting point, increased production cost, complicated burning operation, etc., and achieves the effect of good deoxidation effect and quality improvement.
Pending Publication Date: 2021-03-16
郭鸿鼎
View PDF12 Cites 1 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
[0006] In addition, the preparation method of the alloy is to make aluminum-calcium master alloy and aluminum-magnesium master alloy with low-frequency induction furnace first, and then use power frequency induction furnace to melt into finished products. Because the alloy contains about 50% Fe, it determines The melting temperature needs to reach about 1500°C. It is quite difficult to melt metal calcium and metal magnesium into the alloy at such a high melting temperature, because calcium has a low melting point (839°C) and a low boiling point (1450°C). , low density (1.54g/cm 3 ), the melting point of metal magnesium is low (651°C), and the density is small (1.74g/cm 3 ), before the metal calcium, metal magnesium and aluminum ingots are fully combined, most of the calcium and magnesium will be vaporized, volatilized and oxidized from the molten aluminum during the smelting process, and it is impossible
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
Example Embodiment
[0032] Example 1:
[0033] The present embodiment is a method for the preparation of microcarbon low sulfur high aluminum-free aluminum-magnesium ammunite alloy deoxidating agents, and the specific process is as follows:
[0034] (1) The 1000kg aluminum alloy is used to mix the melting furnace, and the pure aluminum ingot, metal calcium and metal magnesium are selected and weighted according to the required ratio, and the melting furnace is added to the melting furnace to form an aluminum magnesium calcium alloy. liquid;
[0035] During the melting process, the melting temperature is controlled to 680 to 850 ° C, the melting time is controlled to 2.5 to 3.5 h, and during the entire smelting process, the furnace is closed, so that the aluminum magnesite calcium alloy is not contacted with air, avoiding oxidation Damage;
[0036] During the melting, the feed order is first melted by the pure aluminum ingot, and then the metal calcium and the metal magnesium are all melted, the alumi...
Example Embodiment
[0040] Example 2:
[0041] Different from the examples are: only aluminum and magnesium in raw materials are different from the ratio of calcium.
[0042] The chemical composition (weight percent) made of finished aluminum magnesium alloy: Al 71%, Mg 3%, CA 25%, C0.011%, S 0.013%, and the remaining amount is impurities.
Example Embodiment
[0043] Example 3:
[0044] Different from the examples are: only aluminum and magnesium in raw materials are different from the ratio of calcium.
[0045] The chemical composition (weight percent) made of aluminum magnesium-mounted calcium alloys was: Al 88%, Mg 6%, CA 5%, C0.012%, S 0.014%, and the remaining amount was impurities.
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
Login to view more
Abstract
The invention discloses a micro-carbon low-sulfur high-aluminum iron-free aluminum-magnesium-calcium alloy deoxidizer and a preparation method and application thereof, and belongs to the technical field of metallurgy. The aluminum-magnesium-calcium alloy deoxidizer comprises the following chemical components in percentage by weight: 70-90% of Al, 1-10% of Mg, 5-25% of Ca, less than or equal to 0.02% of C, less than or equal to 0.02% of S and the balance inevitable impurities. The preparation method of the deoxidizer comprises the following steps: weighing a pure aluminum ingot, a magnesium metal and a calcium metal according to the chemical components of the aluminum-magnesium-calcium alloy deoxidizer, and adding the mixture into a resistance melting furnace for melting to prepare a moltenaluminum-magnesium-calcium alloy; and pouring the molten alloy into a continuous casting machine, and performing cooling and molding to prepare the aluminum-magnesium-calcium alloy deoxidizer. The deoxidizer can convert all or most of an deoxidized product Al2O3 into calcium aluminosilicate (7Al2O3. 12CaO) with a low melting point (1400 DEG C), and the calcium aluminosilicate (7Al2O3. 12CaO) floats on the surface of molten steel to be removed, so that the harmful effect of Al2O3 is reduced to the maximum extent, and the quality of steel is remarkably improved.
Description
technical field [0001] The invention relates to the technical field of metallurgy, in particular to a micro-carbon, low-sulfur, high-aluminum, iron-free, aluminum-magnesium-calcium alloy deoxidizer and a preparation method and application thereof. Background technique [0002] Since the beginning of the 20th century, my country's steelmaking process has undergone fundamental changes, and the follow-up processing has also continued to extend, forming a hot metal pretreatment → top-bottom combined blowing converter steelmaking → LF, RH refining → continuous casting → hot rolling → cold rolling →Galvanizing→Coating a complete process route. At the same time, the proportion of deep-drawing steel and ultra-deep-drawing steel (such as automobile surface plate steel, container steel, etc.) is also increasing. [0003] For the smelting of low-silicon and low-carbon aluminum-killed steel used to produce thin-gauge cold-rolled deep-drawing products, metal aluminum (or aluminum-iron al...
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 
Login to view more