CN108486394A - A kind of preparation method of heat resistance casting magnesium alloy - Google Patents
A kind of preparation method of heat resistance casting magnesium alloy Download PDFInfo
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- CN108486394A CN108486394A CN201810224935.6A CN201810224935A CN108486394A CN 108486394 A CN108486394 A CN 108486394A CN 201810224935 A CN201810224935 A CN 201810224935A CN 108486394 A CN108486394 A CN 108486394A
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- magnesium alloy
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- heat resistance
- magnesium
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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
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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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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Body Structure For Vehicles (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of preparation method of heat resistance casting magnesium alloy, the cast magnesium alloy is grouped as by the group of following weight percent content：Silicon 0.5 2%, aluminium 2.5 5.5%, zinc 5 8%, bismuth 0.2 0.5%, manganese 0.1 0.5%, gadolinium 3 5%, calcium 0.2 1.5%, total amount are less than 0.02% impurity, and surplus is magnesium.The present invention effectively raises the heat resistance of magnesium alloy by optimized alloy ingredient and proportioning, and the comprehensive mechanical property of cast Mg alloy with high strength of the invention is apparently higher than the cast magnesium alloy reported at present.
Description
Technical field
The present invention relates to casting technology fields, more particularly to a kind of preparation method of heat resistance casting magnesium alloy.
Background technology
With the fast development of global economy, how to reduce energy consumption, improve resource utilization, reduce environmental pollution with
And it is the very urgent problem that the whole mankind is faced to save limited resources, and the light weight of product turns to and solves the problems, such as the offer one
A very effective approach.Magnesium alloy is since, specific strength low with density and specific stiffness are high, damping characteristics are good, electromagnetism
The advantages that shielding is good, machining property is excellent is known as " green engineering material of 21 century ", is a kind of great exploitation value
The resource of value is widely used in the fields such as auto industry, communication electronics and aerospace.But it is strong due to magnesium alloy
Degree is not high, and heat resistance is poor, limits its scope of application.Therefore, the intensity and heat resistance for improving magnesium alloy make it have good
Comprehensive performance, be novel magnesium alloy exploitation hot spot.
Invention content
In order to make up the defect of prior art, the present invention provides a kind of preparation method of heat resistance casting magnesium alloy.
The technical problems to be solved by the invention are achieved by the following technical programs：
A kind of preparation method of heat resistance casting magnesium alloy, the cast magnesium alloy are grouped by the group of following weight percent content
At：Silicon 0.5-2%, aluminium 2.5-5.5%, zinc 5-8%, bismuth 0.2-0.5%, manganese 0.1-0.5%, gadolinium 3-5%, calcium 0.2-1.5%, total amount are small
In 0.02% impurity, surplus is magnesium.
Further, preparation method is：
（1）By magnesium, aluminum and zinc mixes and melting, obtains mixture M 1；Silicon, calcium and gadolinium are added into mixture M 1 and is melted
Refining, obtains mixture M 2；Manganese is added into mixture M 2 and bismuth carries out melting, obtains magnesium alloy solution, entire fusion process uses
Mix CO2And SF6Gas whole process protection；
（2）Magnesium alloy solution is skimmed for the first time, and removal floats on the slag of liquid level；
（3）It is warming up to 780-800 DEG C of logical argon gas refining 15-30min, refining, which finishes, carries out secondary skim；Then it is cooled to 680-
700 DEG C, stand 1-2h；
（4）Cast：Pouring temperature is 730 DEG C, and metal die preheating temperature is 200 DEG C, obtains the cylinder of Φ 13mm × 110mm
Shape ingot casting；
（5）By step（4）The ingot casting of gained is dissolved at 350 DEG C be warming up within 24 hours 450 DEG C of solid solutions 12 hours after, then at 200 DEG C
Under the conditions of timeliness 36-60 hours.
The present invention has the advantages that：
The present invention effectively raises the heat resistance of magnesium alloy, high intensity of the invention casting by optimized alloy ingredient and proportioning
The comprehensive mechanical property for making magnesium alloy is apparently higher than the cast magnesium alloy reported at present.
Specific implementation mode
With reference to embodiment, the present invention will be described in detail, and embodiment is only the preferred embodiment of the present invention,
It is not limitation of the invention.
Embodiment 1
A kind of preparation method of heat resistance casting magnesium alloy, the cast magnesium alloy are grouped by the group of following weight percent content
At：Silicon 1.2%, aluminium 3.8%, zinc 5-8%, bismuth 0.3%, manganese 0.3%, gadolinium 4%, calcium 0.8%, total amount are less than 0.02% impurity, and surplus is
Magnesium.
Preparation method is：
（1）By magnesium, aluminum and zinc mixes and melting, obtains mixture M 1；Silicon, calcium and gadolinium are added into mixture M 1 and is melted
Refining, obtains mixture M 2；Manganese is added into mixture M 2 and bismuth carries out melting, obtains magnesium alloy solution, entire fusion process uses
Mix CO2And SF6Gas whole process protection；
（2）Magnesium alloy solution is skimmed for the first time, and removal floats on the slag of liquid level；
（3）790 DEG C of logical argon gas refining 22min are warming up to, refining, which finishes, carries out secondary skim；Then 690 DEG C are cooled to, is stood
1.5h；
（4）Cast：Pouring temperature is 730 DEG C, and metal die preheating temperature is 200 DEG C, obtains the cylinder of Φ 13mm × 110mm
Shape ingot casting；
（5）By step（4）The ingot casting of gained is dissolved at 350 DEG C be warming up within 24 hours 450 DEG C of solid solutions 12 hours after, then at 200 DEG C
Under the conditions of timeliness 48 hours.
Embodiment 2
A kind of preparation method of heat resistance casting magnesium alloy, the cast magnesium alloy are grouped by the group of following weight percent content
At：Silicon 0.5%, aluminium 2.5%, zinc 5%, bismuth 0.2%, manganese 0.1%, gadolinium 3%, calcium 0.2%, total amount are less than 0.02% impurity, and surplus is magnesium.
Preparation method is：
（1）By magnesium, aluminum and zinc mixes and melting, obtains mixture M 1；Silicon, calcium and gadolinium are added into mixture M 1 and is melted
Refining, obtains mixture M 2；Manganese is added into mixture M 2 and bismuth carries out melting, obtains magnesium alloy solution, entire fusion process uses
Mix CO2And SF6Gas whole process protection；
（2）Magnesium alloy solution is skimmed for the first time, and removal floats on the slag of liquid level；
（3）780 DEG C of logical argon gas refining 15min are warming up to, refining, which finishes, carries out secondary skim；Then 680 DEG C are cooled to, is stood
1h；
（4）Cast：Pouring temperature is 730 DEG C, and metal die preheating temperature is 200 DEG C, obtains the cylinder of Φ 13mm × 110mm
Shape ingot casting；
（5）By step（4）The ingot casting of gained is dissolved at 350 DEG C be warming up within 24 hours 450 DEG C of solid solutions 12 hours after, then at 200 DEG C
Under the conditions of timeliness 36 hours.
Embodiment 3
A kind of preparation method of heat resistance casting magnesium alloy, the cast magnesium alloy are grouped by the group of following weight percent content
At：Silicon 2%, aluminium 5.5%, zinc 8%, bismuth 0.5%, manganese 0.5%, gadolinium 5%, calcium 1.5%, total amount are less than 0.02% impurity, and surplus is magnesium.
Preparation method is：
（1）By magnesium, aluminum and zinc mixes and melting, obtains mixture M 1；Silicon, calcium and gadolinium are added into mixture M 1 and is melted
Refining, obtains mixture M 2；Manganese is added into mixture M 2 and bismuth carries out melting, obtains magnesium alloy solution, entire fusion process uses
Mix CO2And SF6Gas whole process protection；
（2）Magnesium alloy solution is skimmed for the first time, and removal floats on the slag of liquid level；
（3）800 DEG C of logical argon gas refining 30min are warming up to, refining, which finishes, carries out secondary skim；Then 700 DEG C are cooled to, is stood
2h；
（4）Cast：Pouring temperature is 730 DEG C, and metal die preheating temperature is 200 DEG C, obtains the cylinder of Φ 13mm × 110mm
Shape ingot casting；
（5）By step（4）The ingot casting of gained is dissolved at 350 DEG C be warming up within 24 hours 450 DEG C of solid solutions 12 hours after, then at 200 DEG C
Under the conditions of timeliness 60 hours.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention, as long as skill obtained in the form of equivalent substitutions or equivalent transformations
Art scheme should all be fallen within the scope and spirit of the invention.
Claims (2)
1. a kind of preparation method of heat resistance casting magnesium alloy, the cast magnesium alloy is grouped by the group of following weight percent content
At：Silicon 0.5-2%, aluminium 2.5-5.5%, zinc 5-8%, bismuth 0.2-0.5%, manganese 0.1-0.5%, gadolinium 3-5%, calcium 0.2-1.5%, total amount are small
In 0.02% impurity, surplus is magnesium.
2. the preparation method of heat resistance casting magnesium alloy as described in claim 1, which is characterized in that preparation method is：
（1）By magnesium, aluminum and zinc mixes and melting, obtains mixture M 1；Silicon, calcium and gadolinium are added into mixture M 1 and is melted
Refining, obtains mixture M 2；Manganese is added into mixture M 2 and bismuth carries out melting, obtains magnesium alloy solution, entire fusion process uses
Mix CO2And SF6Gas whole process protection；
（2）Magnesium alloy solution is skimmed for the first time, and removal floats on the slag of liquid level；
（3）It is warming up to 780-800 DEG C of logical argon gas refining 15-30min, refining, which finishes, carries out secondary skim；Then it is cooled to 680-
700 DEG C, stand 1-2h；
（4）Cast：Pouring temperature is 730 DEG C, and metal die preheating temperature is 200 DEG C, obtains the cylinder of Φ 13mm × 110mm
Shape ingot casting；
（5）By step（4）The ingot casting of gained is dissolved at 350 DEG C be warming up within 24 hours 450 DEG C of solid solutions 12 hours after, then at 200 DEG C
Under the conditions of timeliness 36-60 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224935.6A CN108486394A (en) | 2018-03-19 | 2018-03-19 | A kind of preparation method of heat resistance casting magnesium alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810224935.6A CN108486394A (en) | 2018-03-19 | 2018-03-19 | A kind of preparation method of heat resistance casting magnesium alloy |
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| Publication Number | Publication Date |
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| CN108486394A true CN108486394A (en) | 2018-09-04 |
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ID=63339873
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810224935.6A Withdrawn CN108486394A (en) | 2018-03-19 | 2018-03-19 | A kind of preparation method of heat resistance casting magnesium alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195382A (en) * | 2020-11-05 | 2021-01-08 | 中国科学院长春应用化学研究所 | Self-foaming porous magnesium alloy and preparation method thereof |
-
2018
- 2018-03-19 CN CN201810224935.6A patent/CN108486394A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195382A (en) * | 2020-11-05 | 2021-01-08 | 中国科学院长春应用化学研究所 | Self-foaming porous magnesium alloy and preparation method thereof |
| CN112195382B (en) * | 2020-11-05 | 2022-02-22 | 中国科学院长春应用化学研究所 | Self-foaming porous magnesium alloy and preparation method thereof |
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Application publication date: 20180904 |