Efficient stirring method and device for magnesium-silicon carbide melt without gas involved
A stirring method and silicon carbide technology, applied in chemical instruments and methods, transportation and packaging, chemical/physical processes, etc., can solve the problems of entrainment and low stirring efficiency, and achieve the effect of solving entrainment and low stirring efficiency.
Inactive Publication Date: 2018-09-21
BEIJING JIAOTONG UNIV
View PDF2 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The technical problem to be solved by the present invention is that there are problems of entrained gas and low stirring efficiency in the stirring of magnesium-silicon carbide melt, and a high-efficiency stirring method and device for a non-entrained magnesium-silicon carbide melt are provided
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment approach 1
[0030] Embodiment 1, under the condition that the power of the high-speed electromagnetic stirring device is 20kW, the rotating speed is 900 rpm, a is 0mm, b is 0mm, c is 0mm, and d is 5mm, after stirring stably for 1 minute and 50 seconds, you can get Magnesium-silicon carbide melt with no gas entrainment and uniform distribution of silicon carbide particles6.
Embodiment approach 2
[0031] Embodiment 2, under the condition that the power of the high-speed electromagnetic stirring device is 20kW, the rotating speed is 1200 r / min, a is 20mm, b is 20mm, c is 10mm, and d is 10mm, after 2 minutes of stable stirring, no coil can be obtained Magnesium-silicon carbide melt with uniform distribution of gas and silicon carbide particles6.
[0032] It can be seen that under the premise of using variable volume graphite crucible to empty and isolate the contact between gas and melt, and then under the condition of high power and high speed electromagnetic stirring, the method of the present invention can efficiently prepare gas-entrained and uniformly distributed silicon carbide particles. Magnesium-silicon carbide melt.
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 |
|---|---|---|
| melting point | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an efficient stirring method and device for magnesium-silicon carbide melt without gas involved and belongs to the field of the study of machining of metallurgy and cast materials. According to the method, the manner of combining a variable size graphite crucible with straight blades distributed on the inner wall with high-speed electromagnetic stirring is adopted for stirring the magnesium-silicon carbide melt; the variable size graphite crucible is utilized for emptying all gas on the upper portion of the melt, then on the condition of complete isolation from externalgas, high-speed electromagnetic stirring is utilized for generating circumferential high-speed stirring motion, the straight blades on the inner wall of the graphite crucible are utilized for stopping downward deposition and centrifugal segregation motion of silicon carbide particles, thus the magnesium-silicon carbide melt without gas involved is obtained, silicon carbide particles are distributed uniformly, the stirring time can be shortened by two minutes, and the technical problems that the gas is involved in the stirring process of the magnesium-silicon carbide melt, and the stirring efficiency is low are solved.
Description
technical field [0001] The invention belongs to the research field of metallurgy, casting and other material processing, and in particular relates to a high-efficiency stirring method and device for an air-free magnesium-silicon carbide melt. Background technique [0002] In metallurgy, casting and other material processing research fields, it is often necessary to stir various melts, such as metal semi-solid slurry, stirring of particle melts, etc., in order to make the temperature, composition, structure, etc. of the melt uniform change. Stirring efficiency usually depends on the stirring intensity. The greater the stirring intensity, the stronger the shear and turbulence formed, the shorter the stirring time for the melt to achieve homogenization of temperature, composition, structure, etc., and the higher the stirring efficiency. However, strong stirring will lead to the problem of entrained air in the melt, which can easily cause oxidation of the high-temperature melt ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C23/00C22C32/00B01F13/08
CPCC22C1/1036C22C23/00C22C32/0063B01F33/45B01F2101/26C22C1/1047
Inventor 张伟一杜云慧张鹏王玉洁
Owner BEIJING JIAOTONG UNIV