CN105543529B - A kind of magnesium alloy composite refining method - Google Patents
A kind of magnesium alloy composite refining method Download PDFInfo
- Publication number
- CN105543529B CN105543529B CN201610003411.5A CN201610003411A CN105543529B CN 105543529 B CN105543529 B CN 105543529B CN 201610003411 A CN201610003411 A CN 201610003411A CN 105543529 B CN105543529 B CN 105543529B
- Authority
- CN
- China
- Prior art keywords
- refining
- flux
- solvent
- airway tube
- magnesium alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
Abstract
A kind of magnesium alloy composite refining method that the present invention is provided, belongs to refining techniques field, and the present invention realizes gas shield and the combination of solvent protection method, gas refinement and solvent refined.It compensate for " bottom solvent method " operation difficulty big, refining labor intensity is high, and refining effect is unstable, easily produce solvent slag inclusion, the defects such as degasification can not be carried out.The present invention proposes twin-stage refining pattern, i.e., carried out in refining process point two-stage, and refining depth, refining time, gas flow and the solvent flux that two-stage is used are different, improve refining qualities, reduce refining cost.
Description
Technical field
The invention belongs to alloy refining techniques field, more particularly to a kind of magnesium alloy composite refining method.
Background technology
Due to magnesium alloy easy firing, it is oxidizable the characteristics of, refining treatment, existing alloy refining equipment and refining need to be carried out
Method can not be applied to magnesium alloy refining.Current magnesium alloy refining uses " bottom solvent method ", is dragged for using stirring spoon
Bottom stirring refining needs operator to have higher operative skill, and labor intensity is very big, and refining effect is influenceed very by operator
Greatly, the stability of agitation is poor, easily produces the defect problems such as solvent, oxide slag inclusion, and solution quality is difficult to be guaranteed.Meanwhile,
The effect of degasification is also unable to reach using the method for refining spoon refining.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of magnesium alloy composite refining method, solving current magnesium alloy
Method operation difficulty is big, and refining labor intensity is high, and refining effect is unstable, easily produces solvent slag inclusion, can not carry out degasification etc.
A series of problems, realizes the composite refining of argon gas and solvent.
The present invention is achieved by the following technical programs.
A kind of magnesium alloy composite refining method that the present invention is provided, comprises the following steps：
1) saturating magnesium alloy ingot will be dried and enters stove fusing, be put into crucible, after 720~780 DEG C carry out Metamorphism treatment, removed
Surface molten slag layer simultaneously uniformly spreads next layer of solvent insulation standing；
2) airway tube of drying is inserted and washed in carnallite solution, the argon flow amount for reconciling airway tube is 1.2L/
Min~2.5L/min, then airway tube is tilted be inserted into away from crucible bottom 50~500mm depths；
3) solvent quantitative supply device is opened so that the quantity of solvent on crucible top layer keeps constant, regulation solvent gives speed
For 120g/min~160g/min, 6min~10min is refined；
4) airway tube is up carried into 10~500mm in vertical direction, regulation argon flow amount is 0.01~5L/min and solvent
Delivery rate is 10~1000g/min, then refines 2min~6min；
5) reach after refining time, take out airway tube, remove surface molten slag layer and uniformly spread next layer of solvent, adjust to
Then 760~820 DEG C of standings, time of repose >=15min is poured into a mould；The sample of cast is tested.
Further, described solvent is RJ-2 solvents or RJ-5 solvents.
The present invention operation principle be：
(1) argon gas dried forms intensive argon gas minute bubbles, the 2/ of magnesium liquid by the dispersion apertures at the airway tube mouth of pipe
3 depths are emerged, and bubble is touched in uphill process with molten metal filing tap.Because partial pressure of ar gas is higher, the hydrogen meeting in metal
Constantly enter after bubble, bubble emersion, the benefit therewith of the hydrogen in bubble, so as to reach the purpose of dehydrogenation.Bubble was rising
Less field trash can also be adsorbed in journey, and is excluded with its floating, certain slagging-off effect is played.Meanwhile, the argon gas of emersion
Because density ratio air is big and floats over superjacent, certain gas shield effect can be played.
(2) rising of intensive bubble can also drive magnesium liquid to produce strong circulative convection up and down in vertical direction, in magnesium liquid
Solvent is constantly equably spread on surface, and the liquid stream and magnesium liquid that solvent can be stirred above and below are fully contacted, and effectively prevents magnesium liquid from firing
Burn, and the field trash being suspended in magnesium liquid is captured, sunk to the bottom, so as to realize solvent refined and the dual effect of solvent protection method.
(3) refining point two-stage is carried out, and the first order uses larger refining depth and larger gas flow, make melt agitation compared with
It is fierce, it is ensured that melt is fully contacted with solvent in crucible.The second level uses relatively small refining depth and gas flow, true
While guarantor's melt continues to obtain refining, the slag formed in advance can be sunk to the bottom, and prevent the slag formed in advance from continuing with melt
Stir and contaminated melt, so as to further improve refining qualities, reduce refining cost.
The beneficial effects of the present invention are：Gas shield and solvent protection method, gas refinement and molten are realized using the present invention
The combination of agent refining.It compensate for " bottom solvent method " operation difficulty big, refining labor intensity is high, and refining effect is unstable, easily
Produce solvent slag inclusion, the defects such as degasification can not be carried out.The present invention proposes twin-stage refining pattern, i.e., be divided to two grading in refining process
OK, refining depth, refining time, gas flow and the solvent flux that two-stage is used are different, improve refining qualities, reduce
Refining cost.
Brief description of the drawings
Figure is the structural representation of 1 embodiment of the present invention.
In figure：1- argon supply system valves, 2- flowmeters, 3- soft air-guide pipes, 4- airway tubes, 5- solvents rationing dress
Put.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
Embodiment one
Present embodiments provide a kind of magnesium alloy ZM5 alloys and meet method of refining；Device shown in this method combination accompanying drawing 1
Carry out, it is specific as follows：
1) saturating ZM5 alloy pigs will be dried and enters stove fusing, be put into crucible (not marked in figure), in 720 DEG C~740 DEG C progress
After Metamorphism treatment, surface molten slag layer is removed using skimming ladle and next No. 2 solvent insulation standing of floor are uniformly spread.
2) airway tube (4) outlet side of drying is inserted and washed in carnallite solution, then by the air guide after washing
Pipe (4) is connected with soft air-guide pipe (3).
3) first open argon supply system valve (1), then adjust flowmeter (2) to argon flow amount be 1.2L/min~
1.6L/min.Airway tube is tilted and is inserted into away from crucible bottom 150~200mm depths.
4) solvent quantitative supply device (5) is opened so that the quantity of solvent on crucible top layer keeps constant, regulation solvent is to constant speed
Rate is 120g/min~160g/min, refines 6min~8min.
5) airway tube is up carried into 50~100mm in vertical direction, regulation argon flow amount is 0.8L/min~1.2L/min
It is 100g/min~120g/min with solvent delivery rate, then refines 2min~4min.
6) reach after refining time, take out airway tube, close solvent quantitative supply device, then turn off argon gas supply system
System valve and flowmeter control valve.
7) airway tube is separated with soft air-guide pipe, then by airway tube be put into carnallite detergent wash 2min~
5min, is placed in standby in drying oven.
8) surface molten slag layer is removed using skimming ladle and uniformly spreads next No. 2 solvent of floor, adjust to 780 DEG C~800 DEG C it is quiet
Put, then time of repose >=15min is poured into a mould.The sample of cast is tested.
The ZM5 alloy purification effects handled using method of refining of the present invention are compared with conventional method, and hydrogen content is by conventional side
The 25.2ml/100g of method is reduced to 8.1ml/100g, outgassing rate about 67.9%；Tensile strength, elongation percentage are compared and are respectively increased
About 19% and 24%.
In above-mentioned, the solvent used is RJ-2 solvents.
Embodiment two
Present embodiments provide a kind of magnesium alloy ZM6 alloys and meet method of refining；Device shown in this method combination accompanying drawing 1
Carry out, it is specific as follows：
1) saturating ZM6 alloy pigs will be dried and enters stove fusing, be put into crucible, surface molten slag layer is removed and uniform using skimming ladle
Next layer of solvent is spread, and adjusts the temperature to 740 DEG C~760 DEG C standings.
2) airway tube (4) outlet side of drying is inserted and washed in carnallite solution, then by the air guide after washing
Pipe (4) is connected with soft air-guide pipe (3).
3) argon supply system valve (1) is first opened, then it is 2.0L/min~2.5L/ to adjust flowmeter (2) to flow
min.Airway tube is tilted and is inserted into away from crucible bottom 150~200mm depths.
4) solvent quantitative supply device (5) is opened so that the quantity of solvent on crucible top layer keeps constant, regulation solvent is to constant speed
Rate is 150g/min~200g/min, refines 8min~10min.
5) airway tube is up carried into 50~100mm in vertical direction, regulation argon flow amount is 1.2L/min~1.5L/min
With solvent delivery rate 120g/min~150g/min, then 4min~6min is refined.
6) reach after refining time, take out airway tube, close quantitative supply device, then turn off argon supply system valve
Door and flowmeter control valve.
7) airway tube is separated with soft air-guide pipe, then by airway tube be put into carnallite detergent wash 2min~
5min, is placed in standby in drying oven.
8) surface molten slag layer is removed using skimming ladle and uniformly spreads next layer of solvent, adjusted to 780 DEG C~810 DEG C standings,
Time of repose >=25min, is then poured into a mould.
The ZM6 alloy purification effects handled using method of refining of the present invention are compared with conventional method, and hydrogen content is by conventional side
The 32.7ml/100g of method is reduced to 12.8ml/100g, outgassing rate about 60.8%；Tensile strength, elongation percentage are compared and are respectively increased
About 17% and 22%.
In above-mentioned, the solvent used is RJ-5 solvents.
Claims (2)
1. a kind of magnesium alloy composite refining method, it is characterised in that：Comprise the following steps：
1) saturating magnesium alloy ingot will be dried and enters stove fusing, be put into crucible, after 720~780 DEG C carry out Metamorphism treatment, remove surface
Molten slag layer simultaneously uniformly spreads next layer of flux insulation standing；
2) airway tube of drying is inserted and washed in carnallite solution, the argon flow amount of regulation airway tube is 1.2L/min
~2.5L/min, then airway tube is tilted be inserted into away from crucible bottom 50~500mm depths；
3) flux quantitative supply device is opened so that the flux amount on crucible top layer keeps constant, regulation flux gives speed and is
120g/min~160g/min, refines 6min~10min；
4) airway tube is up carried into 10~500mm in vertical direction, regulation argon flow amount is 0.01~5L/min and flux is supplied
Speed is 10~1000g/min, then refines 2min~6min；
5) reach after refining time, take out airway tube, remove surface molten slag layer and uniformly spread next layer of flux, regulation to 760~
Then 820 DEG C of standings, time of repose >=15min is poured into a mould；The sample of cast is tested.
2. magnesium alloy composite refining method as claimed in claim 1, it is characterised in that：Described flux be RJ-2 flux or
RJ-5 flux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003411.5A CN105543529B (en) | 2016-01-04 | 2016-01-04 | A kind of magnesium alloy composite refining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610003411.5A CN105543529B (en) | 2016-01-04 | 2016-01-04 | A kind of magnesium alloy composite refining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105543529A CN105543529A (en) | 2016-05-04 |
| CN105543529B true CN105543529B (en) | 2017-08-25 |
Family
ID=55823084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610003411.5A Active CN105543529B (en) | 2016-01-04 | 2016-01-04 | A kind of magnesium alloy composite refining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105543529B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112501446A (en) * | 2020-11-30 | 2021-03-16 | 贵州航天风华精密设备有限公司 | Mechanical rotary stirring and blowing treatment device and treatment method for magnesium alloy melt |
| CN113308614A (en) * | 2021-05-21 | 2021-08-27 | 贵州安吉航空精密铸造有限责任公司 | ZM6 alloy refining method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470658A (en) * | 2003-06-11 | 2004-01-28 | 吉林大学 | Purifying method for casting-smelting mag nesium alloy and air blowing apparatus thereof |
| CN103290292A (en) * | 2013-06-24 | 2013-09-11 | 东北大学 | High strength magnesium alloy and preparation method thereof |
| CN104004930A (en) * | 2014-05-27 | 2014-08-27 | 东北大学 | Magnesium alloy melt refining method |
-
2016
- 2016-01-04 CN CN201610003411.5A patent/CN105543529B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470658A (en) * | 2003-06-11 | 2004-01-28 | 吉林大学 | Purifying method for casting-smelting mag nesium alloy and air blowing apparatus thereof |
| CN103290292A (en) * | 2013-06-24 | 2013-09-11 | 东北大学 | High strength magnesium alloy and preparation method thereof |
| CN104004930A (en) * | 2014-05-27 | 2014-08-27 | 东北大学 | Magnesium alloy melt refining method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105543529A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CS224701B1 (en) | Method of refining of molten metals based on iron and equipment for execution of the method | |
| CN105543529B (en) | A kind of magnesium alloy composite refining method | |
| WO2015058660A1 (en) | Single-impregnating-tube vacuum refining device and use thereof | |
| CN102443679A (en) | Production method of ultralow oxide inclusion steel | |
| CN204111805U (en) | A kind of RH equipment for vacuum refining with barricade | |
| JPS6173817A (en) | Method and apparatus for control refining molten steel | |
| CN104451355B (en) | High-phosphorous iron inoculation treating method and device in a kind of vaccum sensitive stove | |
| CN102443680A (en) | First-tank flocculated-flow-preventing method used for aluminum-killed steel produced by using thin and medium slab continuous casting machine | |
| CN106111970A (en) | A kind of device and method being reduced ladle top slag oxidisability by excessive slag method | |
| CN102994694A (en) | Method for efficiently carbureting LF furnace molten steel | |
| CN203758246U (en) | Device for simulating stirring-mixing visual process of metallurgical furnace kiln | |
| CN208995525U (en) | A kind of single mouth vacuum refining furnace with induction heating | |
| WO2021203851A1 (en) | Method for magnesium and calcium treatments of molten steel by spraying powder using elongated nozzle | |
| CN103743240B (en) | Device for simulating metallurgy kiln stirring and mixing visualized process | |
| TWI816421B (en) | Refining method of molten steel | |
| CN109097526A (en) | A kind of single mouth vacuum refining furnace and its method of refining with induction heating | |
| JP2019014944A (en) | Steel refining method | |
| JP2018127683A (en) | Method for removing nonmetallic inclusions in molten steel | |
| JP2915631B2 (en) | Vacuum refining of molten steel in ladle | |
| JP6897363B2 (en) | Steel melting method | |
| RU2325448C2 (en) | Method of steel ladle metallurgy | |
| CN105331764A (en) | Direct-supply RH refining method for smelting SS400 steel grade through 210t converter | |
| JP2016530402A (en) | Method and apparatus for refining molten metal | |
| UA75829C2 (en) | A method for the vacuum-plasma treatment of non-ferrous alloys | |
| JPS5926644B2 (en) | Device for adding molten additives into molten steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |