CN107760949B - A kind of preparation method of the high tenacity casting magnesium alloy ingot of complex intensifying - Google Patents
A kind of preparation method of the high tenacity casting magnesium alloy ingot of complex intensifying Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
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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
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
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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
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
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Abstract
The present invention relates to a kind of preparation methods of the high tenacity casting magnesium alloy ingot of complex intensifying; it is using magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy as raw material; through vacuum melting furnace melting, argon gas protection, cast molding, heat treatment; the high tenacity casting magnesium alloy ingot of complex intensifying is made; tensile strength reaches 334MPa; elongation percentage is up to 8.4%; product purity is up to 99.5%; this preparation method technique is advanced; data are accurately full and accurate, are the methods of the advanced high tenacity casting magnesium alloy ingot for preparing complex intensifying.
Description
Technical field
The present invention relates to a kind of preparation methods of the high tenacity casting magnesium alloy ingot of complex intensifying, belong to non-ferrous metal material
The technical field of material preparation and application.
Background technique
Magnesium alloy is known as 21 century most potential environmentally protective engineering material, is gold most light in current engineer application
Belong to structural material, it has, and density is small, specific strength and specific stiffness are high, damping property is good, electrical and thermal conductivity performance is good, machining property
The excellent feature of energy has obvious action at product structure lightweight, reduction energy consumption, the aspect that reduces environmental pollution,
Aerospace, electronics industry, defence and military, automobile manufacturing field have obtained wide application；But the obdurability of magnesium alloy is low,
Plasticity is poor, high temperature resistance is poor, make its industrially application receive great limitation.
Alloying cooperates suitable heat treatment process that can effectively improve the obdurability of magnesium alloy, especially adds into alloy
Add rare earth element and a small amount of Zn-ef ficiency significant effect, rare earth element has purification alloy to magnesium alloy, improves tissue and raising
The effect of mechanical property, and significant precipitation strength can be generated by solution treatment and ageing treatment；Zn-ef ficiency is easily and rare earth
Element, which combines, produces high rigidity, high-plasticity, high elastic modulus, there is the long period of good interface cohesion feature with magnesium matrix
Structure phase；Precipitation strength combines long-periodic structure phase, can effectively enhance the obdurability of magnesium alloy.
Currently, complex intensifying cast magnesium alloy is also in conceptual phase, technology is also in scientific research.
Summary of the invention
Goal of the invention
The purpose of the present invention is being directed to background technique, with magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, magnesium
The high-strength of complex intensifying is made through vacuum melting furnace melting, argon gas protection, cast molding, heat treatment for raw material in zirconium intermediate alloy
Toughness cast magnesium alloy ingot, to improve the mechanical property of magnesium alloy ingot.
Technical solution
The chemical substance material that the present invention uses are as follows: magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, magnesium zirconium centre are closed
Gold, magnesia, waterglass, deionized water, argon gas, it is as follows that a combination thereof prepares dosage: with gram, milliliter, centimetre3For measurement unit
The preparation method is as follows:
(1) magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy are pre-processed
1. magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy are placed on steel plate by stripping and slicing,
It is blocking with mechanical cutting, block size≤20mm × 20mm × 20mm；
2. being carried out to magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy with dehydrated alcohol after stripping and slicing
Cleaning；
3. postposition preheating and drying in a vacuum drying oven is cleaned, 120 DEG C of preheating and drying temperature, vacuum degree 2Pa, drying time
40min；
(2) coating agent is prepared
Weigh magnesia 50g ± 1g, measure waterglass 10mL ± 1mL, deionized water 500mL ± 1mL, mixing hollander is added
In be stirred, agitation revolution 50r/min, mixing time 80min；
At milky suspension liquid, i.e. coating agent after stirring；
(3) retractable die is prepared
Retractable die makes of stainless steel material, and mold cavity is in rectangle, and mold cavity surface roughness is Ra0.08-0.16
μm；
(4) melting prepares magnesium alloy ingot
The melting of magnesium alloy is carried out in vacuum melting furnace, be mid-frequency induction heating, vacuumize, argon gas bottom blowing,
It is completed during cast molding；
1. pre-processing retractable die
With washes of absolute alcohol retractable die type chamber, it is allowed to clean；
Retractable die mold cavity surface, surface coating layer thickness 0.5mm ± 0.1mm are uniformly coated with the coating agent of preparation；
Retractable die is placed in drying box and is preheated, 150 DEG C of preheating temperature, preheating time 30min；
2. opening vacuum melting furnace, clear up inside melting kettle, and cleaned with dehydrated alcohol, makes clean inside crucible
Only；
3. weighing MAG block 1300g ± 0.01g, spelter 12g ± 0.01g, magnesium gadolinium intermediate alloy block 800g ± 0.01g, magnesium yttrium
Intermediate alloy block 240g ± 0.01g, Mg-Zr intermediate alloy block 48g ± 0.01g, are placed in crucible bottom；
4. closing vacuum melting furnace, and closed；
Vacuum pump is opened, furnace air is extracted, and pressure in furnace is made to reach 2Pa；
Medium frequency induction heater is opened, is begun to warm up, 750 DEG C ± 1 DEG C of heating temperature, smelting time 60min is heated；
5. being passed through argon gas bottom blowpipe in crucible bottom, argon gas, argon gas bottom blowing speed 150cm are inputted into crucible3/ min, makes
Invariablenes pressure of liquid regulates and controls in 1 atmospheric pressure, and by outlet pipe valve in furnace；
Alloying will occur in fusion process for magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy
Reaction, reaction equation are as follows:
In formula: Mg24(Gd,Y)5: magnesium gadolinium yttrium eutectic phase
(Mg,Zn)3(Gd, Y): magnesium gadolinium yttrium zinc eutectic phase
α-Mg: matrix phase
α-Zr: matrix phase
At alloy molten solution after melting, heating temperature is down to 720 DEG C ± 1 DEG C, keeps the temperature 10min in this thermostatic；
6. casting
Close argon gas bottom blowpipe；
Open vacuum melting furnace；
Remove melting kettle inner melt surface slag；
It is directed at the retractable die cast gate of preheating, is cast, until casting is full；
7. cooling down, the retractable die for alloy molten solution of having cast is put into vacuum cooled furnace to cooling, vacuum degree 2Pa, it is cold
But 20 DEG C of temperature；
8. being opened, retractable die is opened, takes out casting, i.e. magnesium alloy ingot；
(5) heat treating magnesium alloys ingot
The magnesium alloy ingot of preparation is placed in heat-treatment furnace and carries out solution treatment, solid solubility temperature is 520 DEG C, when constant temperature is kept the temperature
Between be 8h, be passed through argon gas and protected, argon gas be passed through speed be 100cm3/min；After constant temperature heat preservation, magnesium alloy ingot is quickly set
Carry out cooling treatment in 30 DEG C of warm water, cooling time 60s；
Magnesium alloy ingot after solution treatment is placed in heat-treatment furnace and carries out ageing treatment, aging temp is 220 DEG C, constant temperature
Soaking time is 36h；Then magnesium alloy ingot is quickly placed into 30 DEG C of warm water and carries out cooling treatment, cooling time, 60s, cold
It but is afterwards the high tenacity casting magnesium alloy ingot of complex intensifying；
Magnesium gadolinium yttrium eutectic phase, magnesium gadolinium yttrium zinc eutectic phase, matrix will mutually undergo phase transition reaction, reaction equation during heat treatment
It is as follows:
In formula: Mg12(Gd, Y) Zn: long-periodic structure phase
Mg5(Gd, Y): precipitation strength phase
(6) it clears up, clean magnesium alloy ingot
The high tenacity casting magnesium alloy ingot of complex intensifying is placed on steel plate, with the positive and negative surface of sand paper polishing and week
Side makes any surface finish；
Then with each portion of washes of absolute alcohol, make its cleaning；
(7) it is dried in vacuo magnesium alloy ingot
The high tenacity casting magnesium alloy ingot of complex intensifying is placed in a vacuum drying oven, 120 DEG C of drying temperature, vacuum degree
2Pa, drying time 10min, at final product；
(8) test, analysis and characterization
The pattern of the high tenacity casting magnesium alloy ingot of the complex intensifying of preparation, metallographic structure, mechanical property are examined
It surveys, analysis, characterization；
Metallographic structure analysis is carried out with Metallographic Analysis instrument；
Fabric analysis is carried out with transmission electron microscope；
XRD analysis is carried out with X-ray diffractometer；
Tensile strength analysis is carried out with microcomputer controlled electronic universal tester；
Conclusion: the high tenacity casting magnesium alloy ingot of complex intensifying is rectangle casting, contains long period knot in magnesium alloy ingot
Structure phase Mg12(Gd, Y) Zn, precipitation strength phase Mg5(Gd, Y) and α-Mg matrix phase, α-Zr matrix phase, strength of alloy reach
334Mpa, elongation percentage is up to 8.4%, and product purity is up to 99.5%.
Beneficial effect
There is apparent advance compared with the background technology, the present invention, be among magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium
Alloy, Mg-Zr intermediate alloy are raw material, through vacuum melting furnace melting, argon gas protection, cast molding, heat treatment, are made compound strong
The high tenacity casting magnesium alloy ingot of change, tensile strength reach 334MPa, and elongation percentage is up to 8.4%, and up to 99.5%, this makes product purity
Preparation Method technique is advanced, and data are accurately full and accurate, is the method for the advanced high tenacity casting magnesium alloy ingot for preparing complex intensifying.
Detailed description of the invention
Fig. 1, the high tenacity casting magnesium alloy ingot melting state diagram of complex intensifying；
Fig. 2, the high tenacity casting magnesium alloy ingot cross section metallographic structure figure of complex intensifying；
Fig. 3, the high tenacity casting magnesium alloy ingot long-periodic structure phase Mg of complex intensifying12(Gd, Y) Zn transmission electron microscope picture；
Fig. 4, the high tenacity casting magnesium alloy ingot precipitation strength phase Mg of complex intensifying5(Gd, Y) transmission electron microscope picture；
Fig. 5, the high tenacity casting magnesium alloy ingot diffracted intensity map of complex intensifying；
As shown in the figure, list of numerals is as follows:
1, vacuum melting furnace, 2, furnace seat, 3, furnace chamber, 4, escape pipe, 5, air outlet valve, 6, workbench, 7, melting kettle, 8, argon
Gas, 9, medium frequency induction heater, 10, alloy molten solution, 11, bottom blowing pump, 12, bottom blowpipe, 13, vacuum pump, 14, vacuum tube, 15, argon
Gas cylinder, 16, tunger tube, 17, argon gas valve, 18, electric cabinet, 19, display screen, 20, indicator light, 21, power switch, 22, intermediate frequency sense
Modulator, 23, bottom blowing pump modulator, 24, vacuum pump modulator, the 25, first cable, the 26, second cable, 27, air filtration should be heated
Net, 28, third cable.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings:
It is the high tenacity casting magnesium alloy ingot melting state diagram of complex intensifying shown in Fig. 1, each portion position is correct, presses
Amount proportion, sequentially operates.
The magnitude for preparing the chemical substance used is determined by pre-set range, with gram, milliliter, centimetre3For meter
Measure unit.
The melting of the high tenacity casting magnesium alloy ingot of complex intensifying is carried out in vacuum melting furnace, is to take out very
It is completed during sky, mid-frequency induction heating, argon gas bottom blowing, cast molding；
Vacuum melting furnace be it is vertical, the bottom of vacuum melting furnace 1 is furnace seat 2, inside is furnace chamber 3；Bottom is set in furnace chamber 3
There is workbench 6, melting kettle 7 is put on workbench 6, is surround outside melting kettle 7 by medium frequency induction heater 9, melting earthenware
It is alloy molten solution 10 in crucible 7；It is equipped with escape pipe 4 in the upper right quarter of vacuum melting furnace 1, and is controlled by air outlet valve 5；In vacuum melting
The left part of furnace 1 is equipped with argon bottle 15, and 15 top of argon bottle is equipped with tunger tube 16, argon gas valve 17, and tunger tube 16 connects bottom blowing pump 11,
Bottom blowing pump 11 connects bottom blowpipe 12, and air screen 27 is equipped at 12 upper end outlet of bottom blowpipe, and bottom blowpipe 12 passes through furnace seat 2, workbench
6, it is passed through in melting kettle 7 through air screen 27, and bottom blowing is carried out to alloy molten solution 10；Vacuum pump is equipped in the right lower quadrant of furnace seat 2
13, vacuum pump 13 connects vacuum tube 14, and vacuum tube 14 passes through furnace seat 2 and is connected to furnace chamber 3；Electricity is equipped in the right part of vacuum melting furnace 1
Case 18 is controlled, display screen 19, indicator light 20, power switch 21, mid-frequency induction heating modulator 22, bottom blowing are equipped on electric cabinet 18
Pump modulator 23, vacuum pump modulator 24；Electric cabinet 18 connects medium frequency induction heater 9 by the first cable 25, passes through second
Cable 26 connects bottom blowing pump 11, connects vacuum pump 13 by third cable 28；It is filled in furnace chamber 3 by argon gas 8.
It is the high tenacity casting magnesium alloy ingot cross section metallographic structure figure of complex intensifying shown in Fig. 2, it is as shown in the figure, brilliant
α-Mg matrix phase, long-periodic structure phase Mg are mainly contained in grain12(Gd, Y) Zn and precipitation strength phase Mg5 (Gd, Y), bulk long week
Phase structure is mutually mainly distributed on grain boundaries and matrix forms coherence.
It is the high tenacity casting magnesium alloy ingot long-periodic structure phase Mg of complex intensifying shown in Fig. 312(Gd, Y) Zn transmission electricity
Mirror figure, in which: Fig. 3 (a) is transmission micrographs, and Fig. 3 (b) is transmission electron diffraction (TED) figure, by the provable conjunction of transmission electron microscope map analysis
Mg in ingot12(Gd, Y) Zn is long-periodic structure phase.
It is the high tenacity casting magnesium alloy ingot precipitation strength phase Mg of complex intensifying shown in Fig. 45(Gd, Y) transmission electron microscope
Figure, as shown in the figure, tiny precipitation strength phase Mg5(Gd, Y) is in ellipticity, and is uniformly distributed in the base.
It is the high tenacity casting magnesium alloy ingot X-ray diffraction intensity map of complex intensifying shown in Fig. 5, it is as shown in the figure, multiple
It closes in the high tenacity casting magnesium alloy ingot strengthened and is primarily present long-periodic structure phase Mg12(Gd, Y) Zn, precipitation strength phase Mg5
(Gd, Y) and α-Mg matrix phase.
Claims (2)
1. a kind of preparation method of the high tenacity casting magnesium alloy ingot of complex intensifying, it is characterised in that: the chemical substance used
Material are as follows: magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy, magnesia, waterglass, deionized water, argon
Gas, it is as follows that a combination thereof prepares dosage: with gram, milliliter, centimetre3For measurement unit
The preparation method is as follows:
(1) magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy are pre-processed
1. magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy are placed on steel plate, use machine by stripping and slicing
Tool cutting is blocking, block size≤20mm × 20mm × 20mm；
2. being cleaned to magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy with dehydrated alcohol after stripping and slicing；
3. postposition preheating and drying in a vacuum drying oven is cleaned, 120 DEG C of preheating and drying temperature, vacuum degree 2Pa, drying time
40min；
(2) coating agent is prepared
Weigh magnesia 50g ± 1g, measure waterglass 10mL ± 1mL, deionized water 500mL ± 1mL, be added in mixing hollander into
Row stirring, agitation revolution 50r/min, mixing time 80min；
At milky suspension liquid, i.e. coating agent after stirring；
(3) retractable die is prepared
Retractable die makes of stainless steel material, and mold cavity is in rectangle, and mold cavity surface roughness is Ra0.08-0.16 μm；
(4) melting prepares magnesium alloy ingot
The melting of magnesium alloy is carried out in vacuum melting furnace, is in mid-frequency induction heating, is vacuumized, argon gas bottom blowing, casting
It is completed in forming process；
1. pre-processing retractable die
With washes of absolute alcohol retractable die type chamber, it is allowed to clean；
Retractable die mold cavity surface, surface coating layer thickness 0.5mm ± 0.1mm are uniformly coated with the coating agent of preparation；
Retractable die is placed in drying box and is preheated, 150 DEG C of preheating temperature, preheating time 30min；
2. opening vacuum melting furnace, clear up inside melting kettle, and cleaned with dehydrated alcohol, makes clean inside crucible；
3. weigh MAG block 1300g ± 0.01g, spelter 12g ± 0.01g, magnesium gadolinium intermediate alloy block 800g ± 0.01g, among magnesium yttrium
Alloy block 240g ± 0.01g, Mg-Zr intermediate alloy block 48g ± 0.01g, are placed in crucible bottom；
4. closing vacuum melting furnace, and closed；
Vacuum pump is opened, furnace air is extracted, and pressure in furnace is made to reach 2Pa；
Medium frequency induction heater is opened, is begun to warm up, 750 DEG C ± 1 DEG C of heating temperature, smelting time 60min is heated；
5. being passed through argon gas bottom blowpipe in crucible bottom, argon gas, argon gas bottom blowing speed 150cm are inputted into crucible3/ min, makes in furnace
Invariablenes pressure of liquid regulates and controls in 1 atmospheric pressure, and by outlet pipe valve；
Alloying reaction will occur in fusion process for magnesium, zinc, magnesium yttrium intermediate alloy, magnesium gadolinium intermediate alloy, Mg-Zr intermediate alloy,
Reaction equation is as follows:
In formula: Mg24(Gd,Y)5: magnesium gadolinium yttrium eutectic phase
(Mg,Zn)3(Gd, Y): magnesium gadolinium yttrium zinc eutectic phase
α-Mg: matrix phase
α-Zr: matrix phase
At alloy molten solution after melting, heating temperature is down to 720 DEG C ± 1 DEG C, keeps the temperature 10min in this thermostatic；
6. casting
Close argon gas bottom blowpipe；
Open vacuum melting furnace；
Remove melting kettle inner melt surface slag；
It is directed at the retractable die cast gate of preheating, is cast, until casting is full；
7. cooling down, the retractable die for alloy molten solution of having cast is put into vacuum cooled furnace to cooling, vacuum degree 2Pa, cooling temperature
20 DEG C of degree；
8. being opened, retractable die is opened, takes out casting, i.e. magnesium alloy ingot；
(5) heat treating magnesium alloys ingot
The magnesium alloy ingot of preparation is placed in heat-treatment furnace and carries out solution treatment, solid solubility temperature is 520 DEG C, and constant temperature soaking time is
8h is passed through argon gas and is protected, and it is 100cm that argon gas, which is passed through speed,3/min；After constant temperature heat preservation, magnesium alloy ingot is quickly placed into 30
DEG C warm water in carry out cooling treatment, cooling time 60s；
Magnesium alloy ingot after solution treatment is placed in heat-treatment furnace and carries out ageing treatment, aging temp is 220 DEG C, constant temperature heat preservation
Time is 36h；Then magnesium alloy ingot is quickly placed into 30 DEG C of warm water and carries out cooling treatment, cooling time 60s, after cooling
For the high tenacity casting magnesium alloy ingot of complex intensifying；
Magnesium gadolinium yttrium eutectic phase, magnesium gadolinium yttrium zinc eutectic phase, matrix mutually will undergo phase transition reaction during heat treatment, and reaction equation is such as
Under:
In formula: Mg12(Gd, Y) Zn: long-periodic structure phase
Mg5(Gd, Y): precipitation strength phase
(6) it clears up, clean magnesium alloy ingot
The high tenacity casting magnesium alloy ingot of complex intensifying is placed on steel plate, is polished positive and negative surface and periphery with sand paper,
Make any surface finish；
Then with each portion of washes of absolute alcohol, make its cleaning；
(7) it is dried in vacuo magnesium alloy ingot
The high tenacity casting magnesium alloy ingot of complex intensifying is placed in a vacuum drying oven, 120 DEG C of drying temperature, vacuum degree 2Pa,
Drying time 10min, at final product；
(8) test, analysis and characterization
The pattern of the high tenacity casting magnesium alloy ingot of the complex intensifying of preparation, metallographic structure, mechanical property are detected, divided
Analysis, characterization；
Metallographic structure analysis is carried out with Metallographic Analysis instrument；
Fabric analysis is carried out with transmission electron microscope；
XRD analysis is carried out with X-ray diffractometer；
Tensile strength analysis is carried out with microcomputer controlled electronic universal tester；
Conclusion: the high tenacity casting magnesium alloy ingot of complex intensifying is rectangle casting, contains long-periodic structure phase in magnesium alloy ingot
Mg12(Gd, Y) Zn, precipitation strength phase Mg5(Gd, Y) and α-Mg matrix phase, α-Zr matrix phase, strength of alloy reach 334Mpa,
Elongation percentage is up to 8.4%, and product purity is up to 99.5%.
2. a kind of preparation method of the high tenacity casting magnesium alloy ingot of complex intensifying according to claim 1, feature
Be: the melting of the high tenacity casting magnesium alloy ingot of complex intensifying is carried out in vacuum melting furnace, be vacuumize, in
It is completed during frequency induction heating, argon gas bottom blowing, cast molding；
Vacuum melting furnace be it is vertical, the bottom of vacuum melting furnace (1) is furnace seat (2), inside is furnace chamber (3)；At furnace chamber (3) interior bottom
Portion is equipped with workbench (6), puts melting kettle (7) on workbench (6), and melting kettle (7) is external by medium frequency induction heater
(9) it surround, is in melting kettle (7) alloy molten solution (10)；Escape pipe (4) are equipped in the upper right quarter of vacuum melting furnace (1), and by
Air outlet valve (5) control；Argon bottle (15) are equipped in the left part of vacuum melting furnace (1), argon bottle (15) top is equipped with tunger tube
(16), argon gas valve (17), tunger tube (16) connect bottom blowing pump (11), and bottom blowing pumps (11) connection bottom blowpipe (12), bottom blowpipe (12)
Air screen (27) are equipped at upper end outlet, bottom blowpipe (12) passes through furnace seat (2), workbench (6), is passed through melting through air screen (27)
In crucible (7), and bottom blowing is carried out to alloy molten solution (10)；Vacuum pump (13) are equipped in the right lower quadrant of furnace seat (2), vacuum pump (13)
It connects vacuum tube (14), vacuum tube (14) passes through furnace seat (2) connection furnace chamber (3)；It is equipped in the right part of vacuum melting furnace (1) automatically controlled
Case (18) is equipped with display screen (19), indicator light (20), power switch (21), mid-frequency induction heating regulation on electric cabinet (18)
Device (22), bottom blowing pump modulator (23), vacuum pump modulator (24)；Electric cabinet (18) connects intermediate frequency sense by the first cable (25)
Heater (9) is answered, bottom blowing pump (11) is connected by the second cable (26), by (28 connections vacuum pump (13) of third cable；Furnace chamber
(3) it is filled in by argon gas (8).
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| CN100545286C (en) * | 2006-09-29 | 2009-09-30 | 上海交通大学 | High-strength creep resistant magnesium alloy and preparation method thereof |
| CN101693972B (en) * | 2009-10-27 | 2011-05-04 | 上海交通大学 | Method for preparing heat resistant rare earth-magnesium alloy engine pistons through squeezing and casting |
| CN102052190B (en) * | 2009-10-27 | 2013-05-08 | 株式会社日立制作所 | Cast heat-resistant rare earth magnesium alloy engine piston and preparation method thereof |
| JP5658609B2 (en) * | 2011-04-19 | 2015-01-28 | 株式会社神戸製鋼所 | Magnesium alloy materials and engine parts |
| CN103014387B (en) * | 2012-12-24 | 2014-08-06 | 中北大学 | Preparation method of magnesium base composite doped with SiC grains |
| CN105385921B (en) * | 2015-12-22 | 2017-05-31 | 太原理工大学 | A kind of preparation method of high-strength micro-alloy magnesium alloy ingot |
| CN105506326B (en) * | 2016-01-22 | 2017-03-29 | 中北大学 | A kind of preparation method of the enhanced Mg-Zr alloys ingot of long-periodic structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113667873A (en) * | 2021-09-03 | 2021-11-19 | 中北大学 | Preparation method of high-strength and high-toughness scandium-containing heat-resistant magnesium-gadolinium alloy ingot |
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