Calcium remover for aluminum-silicon alloy and preparation method 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 decalcifying agent and silicon alloy, which is applied in the field of metal materials, can solve the problems of environmental pollution, large amount of addition, reduction, etc., and achieve the effects of simple preparation process, promotion of precipitation, and good process stability
Inactive Publication Date: 2011-04-13
SHANDONG UNIV
View PDF0 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
However, a large amount of chlorine gas is released during the chlorination process, causing serious environmental pollution.
There is a literature (Internal Combustion Engine Parts, 2005; 5:24) that use
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
[0018] (1) Press AlF first 3 60%, Ni-Si-B master alloy 35%, carbon powder 5% mass ratio to weigh raw materials;
[0019] (2) Ni-Si-B master alloy is subjected to rapid solidification argon atomization treatment to obtain a granular Ni-Si-B master alloy with a particle size of 0.5 mm;
[0020] (3) AlF 3 Powder, 0.5mm granular Ni-Si-B master alloy and carbon powder are uniformly mixed, and the mixed powder is compacted by a briquetting machine to prepare an aluminum-silicon alloy calcium remover.
[0021] The Ni-Si-B master alloy in the step (1) is composed of nickel, silicon and boron, and the mass percent of each component is: nickel 55, silicon 40, boron 5. An aluminum-silicon alloy calcium remover is obtained according to the above proportioning ratio, and its chemical composition (mass percentage) is: aluminum 19.20, fluorine 40.80, nickel 19.25, silicon 14.00, boron 1.75, and the rest is carbon.
Embodiment 2
[0023] (1) Press AlF first 3 50%, Ni-Si-B master alloy 40%, carbon powder 10% mass ratio to take raw materials;
[0024] (2) Ni-Si-B master alloy is subjected to rapid solidification argon atomization treatment to obtain a granular Ni-Si-B master alloy with a particle size of 0.4mm;
[0025] (3) AlF 3 Powder, 0.4mm granular Ni-Si-B master alloy and carbon powder are uniformly mixed, and the mixed powder is compacted by a briquetting machine to prepare an aluminum-silicon alloy calcium remover.
[0026] The Ni-Si-B master alloy in the step (1) is composed of nickel, silicon and boron, and the mass percentages of each component are: 60 nickel, 30 silicon and 10 boron. Obtain a kind of aluminum-silicon alloy calcium remover of optimal composition according to above-mentioned proportion, and its chemical composition (mass percentage) is: aluminum 16, fluorine 34, nickel 24, silicon 12, boron 4, and the rest is carbon.
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 belongs to the field of metal material, which is a calcium remover for aluminum-silicon alloy and a preparation method thereof. The calcium remover comprises aluminum and fluorine; the calcium remover is characterized by further comprising nickel, silicon, boron and carbon, the mass percentage of each element is as follows: 11.0-21.0% of the aluminum, 24.0-44.0% of the fluorine, 5.0-30.0% of the nickel, 7.0-35.0% of the silicon, 0.1-5.0% of the boron and 5.0-20.0% of the carbon. The preparation method comprises the following steps: weighing each material according to the mass percentage, 35-65% of AlF3, 20-50% of master alloy Ni-Si-B and 5-20% of carbon powder; performing rapid solidification processing of argon aerosol to the master alloy Ni-Si-B, obtaining granular master alloy Ni-Si-B; uniformly mixing the AlF3 powder, the granular Ni-Si-B powder and the carbon powder, using a briquetting machine to press the powder, and preparing into lumpish calcium remover. The calcium remover for the aluminum-silicon alloy of the invention is highly efficient and environmentally friendly, simple in preparation process, good in process stability, low in cost and the like; when the adding amount is 0.2%, the calcium content in the industrial aluminum-silicon piston alloy is reduced lower than 20 ppm, and the calcium remover for the aluminum-silicon alloy is a novel modification agent similar to eutectic Al-Si alloy.
Description
technical field [0001] The invention belongs to the field of metal materials, in particular to an aluminum-silicon alloy decalcifier and a preparation method thereof. Background technique [0002] Eutectic and hypereutectic aluminum-silicon alloys have the advantages of small thermal expansion coefficient, good volume stability, good wear resistance, high strength, and good process performance, and have become the most widely used piston materials at home and abroad. In order to improve the mechanical properties of aluminum-silicon alloys, it must be modified. At present, the most widely used modification in the industry is the modification of phosphorus. Calcium (Ca), silver-white light metal, soft, density 1.54g / cm 3 , chemically active, almost all metal oxides can be reduced when heated. Calcium is one of the main impurities in industrial aluminum-silicon alloys, which is mainly introduced from the raw material industrial crystalline silicon. Researches at home and abr...
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