CN111318656B - RbCl/BaCl2Mixed aerosol and method for preparing magnesium-based metal semisolid slurry by using same - Google Patents
RbCl/BaCl2Mixed aerosol and method for preparing magnesium-based metal semisolid slurry by using same Download PDFInfo
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- CN111318656B CN111318656B CN202010200483.5A CN202010200483A CN111318656B CN 111318656 B CN111318656 B CN 111318656B CN 202010200483 A CN202010200483 A CN 202010200483A CN 111318656 B CN111318656 B CN 111318656B
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- FGDZQCVHDSGLHJ-UHFFFAOYSA-M rubidium chloride Chemical compound [Cl-].[Rb+] FGDZQCVHDSGLHJ-UHFFFAOYSA-M 0.000 title claims abstract description 145
- 239000000443 aerosol Substances 0.000 title claims abstract description 98
- 239000002002 slurry Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 title claims abstract description 32
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 21
- 239000011777 magnesium Substances 0.000 title claims abstract description 21
- 229910001626 barium chloride Inorganic materials 0.000 claims abstract description 54
- 239000007787 solid Substances 0.000 claims abstract description 42
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000011812 mixed powder Substances 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 10
- 238000004537 pulping Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 5
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000011261 inert gas Substances 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 239000007790 solid phase Substances 0.000 description 13
- 239000000155 melt Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000010099 solid forming Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006911 nucleation Effects 0.000 description 5
- 238000010899 nucleation Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229940102127 rubidium chloride Drugs 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0095—Preparation of aerosols
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
RbCl/BaCl2A mixed aerosol and a method for preparing magnesium-based metal semisolid slurry by using the same belong to the field of metal material preparation. The RbCl/BaCl2Mixed aerosol comprising aerosol solute and aerosol solvent, the aerosol solute comprising total RbCl/BaCl2The mass percentage of the mixed aerosol is 80-85%; the aerosol solutes are RbCl and BaCl2Mixed powder with the mass ratio of 2: 3; the aerosol solvent is a single or mixed gas that does not react with the magnesium alloy melt, including but not limited to inert gases and/or shielding gases commonly used in magnesium melting. Mixing RbCl/BaCl2The mixed aerosol is introduced into the magnesium alloy melt in the semi-solid temperature range and is fully contacted with the magnesium alloy melt, so that magnesium-based metal semi-solid slurry is formed. Compared with the traditional preparation method of magnesium alloy semi-solid slurry, the method has the advantages of simple and reliable equipment, stable process, high product quality and the like, and can achieve the effects of energy conservation and emission reduction while reducing the cost.
Description
Technical Field
The invention discloses an RbCl/BaCl2A mixed aerosol and a method for preparing magnesium-based metal semisolid slurry by using the same relate to the field of metal material preparation, and can be used for quickly and efficiently preparing magnesium-based alloy metal semisolid slurry.
Background
The semi-solid metal forming process has short technological process, high product performance and other features, and is one of the metal forming technologies with wide application foreground in the 21 st century. After decades of research and development, the semi-solid metal forming technology is rapidly developed and is currently in the industrial application stage. The basic principle of metal semi-solid forming is to form and process alloy in a solid-liquid two-phase region, and the alloy has the characteristics and advantages of liquid and solid forming. The metal semi-solid forming product has strong technological adaptability, is suitable for producing alloy products with complex structures, and has excellent mechanical properties. Compared with the traditional liquid and solid forming, the method has the following advantages: the die has small thermal shock and long service life; the product has small shrinkage and low gas content; the machining allowance is small, and the yield is high; low energy consumption, environmental protection and the like. Not only broadens the application range of alloy products, but also has important significance for the preparation of new materials such as metal matrix composite materials and the like.
The technical core of the metal semi-solid forming process is to prepare metal semi-solid slurry, obtain spheroidized and refined solidification structures and effectively avoid coarse dendrites influencing mechanical properties in alloy structures solidified in a conventional liquid state. The method for quickly and efficiently obtaining the metal semi-solid slurry with good structure is the basis and the key of metal semi-solid forming, but the problems of high energy consumption, long flow, unstable process, low structure nodularity and the like generally exist in the existing pulping means.
An aerosol is a colloidal dispersion of small particles of a solid or liquid dispersed and suspended in a gaseous medium, also known as a gas dispersion. The dispersion phase is solid or liquid small particles with a size of 0.001-100 μm, and the dispersion medium is gas. Because the solute particles have small diameters, the diffusion speed in a liquid phase is high, and the traditional mechanical stirring is not relied on to promote the particle diffusion. In actual production, aerosols are mainly used in the field of fire protection; can also be used for spraying pesticides to improve the pesticide effect and reduce the consumption of the drugs; the meteorological department also uses aerosol to make artificial rainfall so as to improve the drought. But their use in the metallurgical and material processing fields has been rarely reported.
Disclosure of Invention
In order to overcome the defects of the preparation of metal semi-solid slurry in the prior art, the invention provides RbCl/BaCl2Mixed gas solutionGlue and a method for preparing magnesium-based metal semi-solid slurry. The method comprises the steps of introducing RbCl/BaCl into a melt2Mixing the aerosols as RbCl/BaCl2As active solute particles, the characteristics of small diameter and high dispersion degree of the active solute particles are utilized, when RbCl/BaCl2The mixed aerosol dispersed fine active solute particle phase is adsorbed to the surface when it encounters the larger volume of the primary solid phase. The active solute particles form a coating effect on the primary solid phase, so that the heat exchange of the primary solid phase is prevented, the surface tension of the contact surface of the crystal nucleus and the melt is greatly improved, and the primary solid phase is promoted to be converted to be nearly spherical. Compared with the traditional preparation method of magnesium alloy semi-solid slurry, the method has the advantages of simple and reliable equipment, stable process, high product quality and the like, and can obviously shorten the process flow and reduce the production cost.
RbCl/BaCl2A mixed aerosol comprising an aerosol solute and an aerosol solvent, said aerosol solute comprising total RbCl/BaCl2The mass percentage of the mixed aerosol is 80-85%;
the aerosol solute is RbCl and BaCl2The mixed powder comprises the following components in percentage by mass, RbCl: BaCl22:3, the purity of solute raw materials is chemical purity; the equivalent diameter of RbCl powder is less than or equal to 200nm, and BaCl2The equivalent diameter of the powder is less than or equal to 200 nm;
the aerosol solvent is a single or mixed gas which does not react with the magnesium alloy melt, and includes but is not limited to inert gas and/or protective gas commonly used for magnesium smelting.
In the aerosol solvent, the purity of the used gas is chemical purity or more.
RbCl/BaCl2Mixed aerosols, dispersed phase RbCl/BaCl2The equivalent diameter is less than or equal to 200nm, and the diffusion speed in the melt is high due to the small equivalent diameter, so that a compact film layer can be formed on the surface of the primary solid phase by virtue of the adsorption of the primary solid phase and the surface tension effect, the heat and mass transfer isolation effect is realized, the growth of the primary solid phase is inhibited, and the nucleation mass point is used as a nucleation mass point, and the nucleation rate is enhanced. Meanwhile, the aerosol solvent has a refining effect on the melt, so that the quality of the melt can be improved.
RbCl/BaCl2The preparation method of the mixed aerosol comprises the following steps:
step 1:
according to the preparation requirements of the aerosol solvent, if a single gas can be directly used as the aerosol solvent; if the gas mixture is a plurality of mixed gases, the gas mixture is mixed under the same temperature and pressure to obtain an aerosol solvent;
step 2:
RbCl and BaCl are weighed according to the mass ratio of each powder in aerosol solute2Uniformly mixing to obtain aerosol solute;
and step 3:
mixing aerosol solute and aerosol solvent according to mass percent to obtain RbCl/BaCl2The aerosols are mixed.
The invention relates to RbCl/BaCl2The method for preparing the magnesium-based metal semi-solid slurry by the mixed aerosol comprises the following steps:
mixing RbCl/BaCl2The mixed aerosol is introduced into the magnesium alloy melt in the semi-solid temperature range and is fully contacted with the magnesium alloy melt, so that magnesium-based metal semi-solid slurry is formed.
The semi-solid temperature range is determined according to the components of the magnesium alloy melt and the mass percentage of each component, and is preferably 600-650 ℃.
The leading-in flow is 100-300 mL/min, the leading-in time of the tundish type pulping device is 28-35 min, and the temperature needs to be heated to 575-585 ℃ before leading-in.
Wherein, under the condition of using the tundish device for pulping, the quality of the magnesium alloy melt and RbCl/BaCl2The volume consumption proportion of the mixed aerosol is preferably that RbCl/BaCl is correspondingly added into each kilogram of magnesium alloy melt2The volume of the mixed aerosol is 1-2L.
The invention relates to RbCl/BaCl2Compared with the prior preparation of metal semi-solid slurry, the mixed aerosol and the method for preparing the magnesium-based metal semi-solid slurry have the beneficial effects that:
in the method for preparing the metal semi-solid slurry of the invention, the advantages areThe active component RbCl/BaCl is used under the action of aerosol dispersion distribution2Attached to the surface of the primary solid phase of the alloy melt, the surface tension of the contact surface of the crystal nucleus and the melt can be greatly improved, and the nodularity of the metal semi-solid slurry is improved, wherein the schematic diagram of the pulping mechanism of the metal semi-solid slurry is shown in figure 1. The powder can prevent the solid phase from continuously growing after being uniformly attached to the primary solid phase, or can be used as nucleation particles of heterogeneous nucleation, so that the microstructure of a product cast or die-cast by adopting semi-solid slurry is obviously refined, and the average grain size of the product after casting or die-casting is 20-35 microns. Compared with the traditional preparation method of magnesium alloy semi-solid slurry, the method has the advantages of simple and reliable equipment, stable process, high product quality and the like, and can achieve the effects of energy conservation and emission reduction while reducing the cost.
Drawings
FIG. 1 shows RbCl/BaCl of the present invention2And (3) a mixed aerosol pulping mechanism schematic diagram.
Fig. 2 is a schematic structural diagram of a device in a manufacturing process according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a device in a manufacturing process according to embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of a device in a manufacturing process according to embodiment 3 of the present invention.
In the above figures, 1 is a crucible tundish, 2 is an introduction tube, and 3 is RbCl/BaCl2And (3) mixing aerosol, wherein 4 is alloy melt, 5 is a launder, and 6 is a mould.
Detailed Description
The following three examples illustrate specific embodiments of the present invention, but are not intended to limit the scope of the present invention. Any changes and modifications to the following real-time modes according to the technical essence of the present invention are within the scope of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
In the following examples, unless otherwise specified, the starting materials and equipment used are commercially available, wherein the starting materials are chemically pure or more.
Example 1
In this example, 3Kg-AZ91 magnesium alloy semi-solid slurry was prepared using the present method.
RbCl/BaCl2The preparation method of the mixed aerosol comprises the following steps:
firstly, chemically pure RbCl (rubidium chloride) and BaCl2The mass ratio of (barium chloride) powder RbCl: BaCl22:3, mixing to obtain aerosol solute;
adding the prepared aerosol solute into a 50L high-pressure resistant gas tank, wherein the mass of the added aerosol solute is RbCl/BaCl2The mass ratio of the mixed aerosol is 80%;
then the chemical pure argon gas is compressed into a high pressure resistant gas tank under the conditions of room temperature and 14.5MPa to be mixed to form RbCl/BaCl2And storing the mixed aerosol for later use.
Using the above RbCl/BaCl2The preparation process schematic diagram of the method for preparing magnesium-based metal semi-solid slurry by mixed aerosol is shown in figure 2, and the method specifically comprises the following steps:
pouring the well smelted AZ91 magnesium alloy melt 4 at 645 ℃ into a crucible tundish 1 preheated to 600 ℃, and heating under a protective atmosphere. AZ91 magnesium alloy melt 4 in the crucible tundish 1 is heated to 645 ℃ and kept at a constant temperature, and RbCl/BaCl preheated to 575 ℃ is prepared through an introducing pipe 2 at a flow rate of 100mL/min2And introducing the mixed aerosol 3 into the AZ91 magnesium alloy melt 4 for 40min, and after the time is up to closing an aerosol pipeline valve, keeping the temperature at the constant temperature for 4 min, finishing pulping to obtain the AZ91 magnesium alloy semi-solid slurry.
The prepared AZ91 magnesium alloy semi-solid slurry can prove that the surface tension difference is formed in the melt due to the solid phase volume difference, so that the adsorption effect exists. The equivalent diameter of primary grains and the shape factor of the slurry prepared in this example are shown in Table 1.
Example 2
In this example, 3Kg-AZ91 magnesium alloy semi-solid slurry was prepared using the present method.
Firstly, chemically pure RbCl (rubidium chloride) and BaCl2The mass ratio of (barium chloride) powder RbCl: BaCl2Mixing as aerosol solute 2: 3;
adding the prepared aerosol solute into 50L of the resistantIn the high-pressure gas tank, the mass of the added aerosol solute is RbCl/BaCl282% of the mass ratio of the mixed aerosol;
then the chemically pure helium gas under the conditions of room temperature and 14.5MPa is compressed into a high pressure resistant gas tank for mixing to form RbCl/BaCl2And storing the mixed aerosol for later use.
Using the above RbCl/BaCl2The preparation method of the magnesium-based metal semi-solid slurry by the mixed aerosol is shown in figure 3, and comprises the following steps:
heating the AZ91 alloy to 650 ℃, and placing the obtained AZ91 alloy melt 4 into a mould 6; the AZ91 alloy melt 4 was poured into a launder 5 preheated to 620 ℃ at an angle of 35 ℃ to the horizontal and 420mm long. RbCl/BaCl prepared and preheated to 580 ℃ is introduced into the reactor through the introduction pipe 22The mixed aerosol 3 and the AZ91 alloy melt 4 flow in the same direction, and RbCl/BaCl2The introduction flow rate of the mixed aerosol 3 was 250mL/min, and RbCl/BaCl was adjusted to2The mixed aerosol 3 is in full contact with the alloy melt 4. Refining the melt with an aerosol solvent, and obtaining active RbCl/BaCl2And (3) enabling the particles to enter the melt and be adsorbed on the surface of the primary solid phase to finish the preparation of the semi-solid slurry, thus obtaining the AZ91 magnesium alloy semi-solid slurry.
The equivalent diameter of primary grains and the shape factor of the slurry prepared in this example are shown in Table 1.
Example 3
In this example, 3Kg-AM60 magnesium alloy semi-solid slurry was prepared using the present method.
Firstly, chemically pure RbCl (rubidium chloride) and BaCl2The mass ratio of (barium chloride) powder RbCl: BaCl2Mixing as aerosol solute 2: 3;
adding the prepared aerosol solute into a 50L high-pressure-resistant gas tank, wherein the added aerosol solute accounts for 85% of the mass of the aerosol;
then argon and helium with equal volume ratio under the conditions of room temperature and 14.5MPa are compressed into the high pressure resistant gas tank for mixing to form RbCl/BaCl2And storing the mixed aerosol for later use.
Using the above RbCl/BaCl2MixingThe preparation process schematic diagram of the method for preparing magnesium-based metal semisolid slurry by using aerosol is shown in figure 4, and the method comprises the following steps:
weighing 3Kg of AM60 magnesium alloy with an oxide layer removed, heating to 630 ℃, and placing the obtained AM60 magnesium alloy melt 4 in a die 6; the AM60 magnesium alloy melt 4 is poured into a launder 5 which is preheated to 620 ℃, forms an inclination angle of 30 degrees with the horizontal plane and has a length of 420 mm. The prepared RbCl/BaCl preheated to 585 ℃ was introduced into the reactor through the introduction tube 22The mixed aerosol 3 and the AM60 magnesium alloy melt 4 flow in the opposite directions, and RbCl/BaCl2The introduction flow rate of the mixed aerosol 3 is 200mL/min, so that RbCl/BaCl2The mixed aerosol 3 is fully contacted with the alloy melt 4 from bottom to top. Refining the melt with an aerosol solvent, and obtaining active RbCl/BaCl2And (3) enabling the particles to enter the melt and be adsorbed on the surface of the primary solid phase to finish the preparation of the semi-solid slurry, thus obtaining the AZ91 magnesium alloy semi-solid slurry.
The equivalent diameter of primary grains and the shape factor of the slurry prepared in this example are shown in Table 1.
TABLE 1 Primary grain equivalent diameter and shape factor for slurries prepared in three examples
Claims (6)
1. RbCl/BaCl2Mixed aerosol, characterized in that the RbCl/BaCl2The mixed aerosol comprises aerosol solute and aerosol solvent, wherein the aerosol solute accounts for total RbCl/BaCl2The mass percentage of the mixed aerosol is 80-85%;
the aerosol solute is RbCl and BaCl2The mixed powder comprises the following components in percentage by mass, RbCl: BaCl2=2:3, the purity of solute raw materials is chemical purity; the equivalent diameter of RbCl powder is less than or equal to 200nm, and BaCl2The equivalent diameter of the powder is less than or equal to 200 nm;
the aerosol solvent is a single or mixed gas which does not react with the magnesium alloy melt, and the purity of the gas raw material for preparing the aerosol solvent is chemical purity or more.
2. The RbCl/BaCl of claim 12The preparation method of the mixed aerosol is characterized by comprising the following steps:
step 1:
according to the preparation requirements of the aerosol solvent, if a single gas can be directly used as the aerosol solvent; if the gas mixture is a plurality of mixed gases, the gas mixture is mixed under the same temperature and pressure to obtain an aerosol solvent;
step 2:
RbCl and BaCl are weighed according to the mass ratio of each powder in aerosol solute2Uniformly mixing to obtain aerosol solute;
and step 3:
mixing aerosol solute and aerosol solvent according to mass percent to obtain RbCl/BaCl2The aerosols are mixed.
3. The RbCl/BaCl of claim 12The method for preparing the magnesium-based metal semi-solid slurry by the mixed aerosol is characterized by comprising the following steps of:
mixing RbCl/BaCl2The mixed aerosol is introduced into the magnesium alloy melt in the semi-solid temperature range and is fully contacted with the magnesium alloy melt, so that magnesium-based metal semi-solid slurry is formed.
4. The RbCl/BaCl of claim 32The method for preparing magnesium-based metal semi-solid slurry by mixed aerosol is characterized in that the semi-solid temperature range is determined according to the components of a magnesium alloy melt and the mass percentage content of each component, and is specifically 600-650 ℃.
5. The RbCl/BaCl of claim 32The method for preparing magnesium-based metal semi-solid slurry by mixed aerosol is characterized in that the introducing flow is 100-300 mL/min, the introducing time of a tundish type pulping device is 28-35 min, and the magnesium-based metal semi-solid slurry needs to be heated to 575-585 ℃ before introduction.
6. Root of herbaceous plantRbCl/BaCl of claim 32The method for preparing magnesium-based metal semi-solid slurry by using mixed aerosol is characterized in that the mass of magnesium alloy melt and RbCl/BaCl are mixed under the condition of using a tundish device for pulping2The volume consumption proportion of the mixed aerosol is as follows: RbCl/BaCl is correspondingly added into each kilogram of magnesium alloy melt2The volume of the mixed aerosol is 1-2L.
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| CN1119460A (en) * | 1994-01-21 | 1996-03-27 | 勃勒许·威尔曼股份有限公司 | Semi-solid processed magnesium-beryllium alloys |
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