CN111155009A - Preparation method of magnesium-aluminum-titanium-chromium alloy - Google Patents
Preparation method of magnesium-aluminum-titanium-chromium alloy Download PDFInfo
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- CN111155009A CN111155009A CN202010049071.6A CN202010049071A CN111155009A CN 111155009 A CN111155009 A CN 111155009A CN 202010049071 A CN202010049071 A CN 202010049071A CN 111155009 A CN111155009 A CN 111155009A
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- aluminum
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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
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
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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
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
Abstract
The invention discloses a preparation method of a magnesium-aluminum-titanium-chromium alloy, which comprises the following components in percentage by mass: mg 80-95%, Al 5-18%, Ti0.5-1%, Cr 0.2-0.8%; the method comprises the following steps: adding a magnesium ingot into a first induction furnace; adding an aluminum alloy refining agent into the first induction furnace to cover the magnesium ingot, heating to 1000-1300 ℃, and melting the magnesium ingot; adding an aluminum-titanium-chromium alloy ingot into the first induction furnace, keeping the temperature at 1000-1300 ℃, and performing online degassing and purification to obtain magnesium-aluminum-titanium-chromium alloy liquid; and casting the magnesium-aluminum-titanium-chromium alloy liquid into a magnesium-aluminum-titanium-chromium alloy ingot or rolling. The invention avoids the chemical reaction of magnesium, oxygen and carbon dioxide or spontaneous combustion in the process of preparing the magnesium-aluminum-titanium-chromium alloy, thereby realizing the production of the magnesium-aluminum-titanium-chromium alloy without a closed container, improving the operation convenience and the production efficiency and quality.
Description
Technical Field
The invention relates to the technical field of preparation of magnesium-aluminum-titanium-chromium alloy, in particular to a preparation method of magnesium-aluminum-titanium-chromium alloy.
Background
Magnesium-aluminum-titanium-chromium alloy (Mg-AL-Ti-Cr) is used as an important non-ferrous metal material and is widely applied to the fields of aviation, aerospace, automobiles, mechanical manufacturing, ships, chemical industry and the like.
At present, when preparing the magnesium-aluminum-titanium-chromium alloy, because magnesium is easy to react with oxygen, carbon dioxide and the like in the air, magnesium is generally heated to be molten in a closed crucible, and then the aluminum-titanium-chromium alloy is added into the closed crucible to be heated to obtain the magnesium-aluminum-titanium-chromium alloy.
Disclosure of Invention
The invention mainly aims to provide a preparation method of a magnesium-aluminum-titanium-chromium alloy, aiming at avoiding the chemical reaction of magnesium with oxygen and carbon dioxide or spontaneous combustion in the process of preparing the magnesium-aluminum-titanium-chromium alloy, thereby realizing the production of the magnesium-aluminum-titanium-chromium alloy without a closed container, improving the operation convenience and improving the production efficiency and quality.
In order to achieve the purpose, the invention provides a preparation method of a magnesium-aluminum-titanium-chromium alloy, which comprises the following components in percentage by mass: mg 80-95%, Al 5-18%, Ti0.5-1%, Cr 0.2-0.8%; the method comprises the following steps:
step S10, adding magnesium ingots into a first induction furnace;
step S20, adding a pre-prepared aluminum alloy refining agent into the first induction furnace to cover the magnesium ingot, heating to 1000-1300 ℃, and melting the magnesium ingot;
step S30, adding a pre-prepared aluminum-titanium-chromium alloy ingot into the first induction furnace, keeping the temperature at 1000-1300 ℃, and performing online degassing and purification to obtain magnesium-aluminum-titanium-chromium alloy liquid;
and step S40, casting and forming the magnesium-aluminum-titanium-chromium alloy liquid into a magnesium-aluminum-titanium-chromium alloy ingot or rolling.
The further technical scheme of the present invention is that, in step S10, before the step of adding the magnesium ingot into the first induction furnace, the method further comprises:
step S00, adding an aluminum ingot, potassium fluotitanate and an aluminum-chromium alloy in a second induction furnace according to a preset proportion to prepare an aluminum-titanium-chromium alloy ingot, wherein the aluminum ingot, the potassium fluotitanate and the aluminum-chromium alloy comprise, by mass, 4-12% of the aluminum ingot, 2.5-5% of the potassium fluotitanate and 2-8% of the aluminum-chromium alloy.
The further technical scheme of the invention is that the aluminum alloy refining agent is K2MgCl4The step S10, before the step of adding the magnesium ingot into the first induction furnace, further includes:
adding aluminum into the third induction furnace, and heating and melting the aluminum to obtain an aluminum melt;
adding preparation K into the third induction furnace according to a preset proportion2MgCl4Stirring the raw materials to obtain the aluminum alloy refining agent.
The further technical proposal of the invention is that the preparation K2MgCl4The raw materials comprise KCl and MgCl2The KCl and MgCl2In a molar ratio of 2: 1.
The further technical scheme is that the frequency of the third electric induction furnace is 50-150 HZ.
The further technical scheme is that the frequency of the first electric induction furnace is 100-200 HZ.
The preparation method of the magnesium-aluminum-titanium-chromium alloy has the beneficial effects that: according to the invention, the magnesium ingot is added into the first induction furnace, then the aluminium alloy refining agent prepared in advance is added into the first induction furnace to cover the magnesium ingot, the temperature is raised to 1000-1300 ℃, such as 1000 ℃, 1150 ℃ or 1300 ℃, the magnesium ingot is melted, then the aluminium titanium chromium alloy ingot prepared in advance is added into the first induction furnace, the temperature is kept at 1000-1300 ℃, online degassing and purification are carried out to obtain the magnesium aluminum titanium chromium alloy liquid, and finally the magnesium aluminum titanium chromium alloy liquid is cast and formed into the magnesium aluminum titanium chromium alloy ingot or is rolled, so that the magnesium, oxygen and carbon dioxide can be prevented from generating chemical reaction or spontaneous combustion in the process of preparing the magnesium aluminum titanium chromium alloy, and therefore, the magnesium aluminum titanium chromium alloy can be produced without being in a closed container, the operation convenience is improved, and the production efficiency and quality are improved.
Drawings
FIG. 1 is a schematic flow chart of a preferred embodiment of the method for preparing the Mg-Al-Ti-Cr alloy of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a preferred embodiment of a method for preparing a magnesium-aluminum-titanium-chromium alloy according to the present invention.
In the embodiment, the magnesium-aluminum-titanium-chromium alloy comprises the following components in percentage by mass: mg 80-95%, Al 5-18%, Ti 0.5-1%, and Cr 0.2-0.8%. For example, the alloy comprises Mg 80%, Al 18%, Ti 1%, Cr0.8%, or Mg 95%, Al 5%, Ti0.5%, Cr 0.2%, or Mg 90%, Al 12%, Ti0.8%, Cr 0.5% by mass.
As shown in fig. 1, the preparation method of the magnesium-aluminum-titanium-chromium alloy comprises the following steps:
step S10, adding a magnesium ingot in the first induction furnace.
Wherein the frequency of the first electric induction furnace is 100-200 HZ.
Step S20, adding a pre-prepared aluminum alloy refining agent into the first induction furnace to cover the magnesium ingot, heating to 1000-1300 ℃, and melting the magnesium ingot;
step S30, adding a pre-prepared aluminum-titanium-chromium alloy ingot into the first induction furnace, keeping the temperature at 1000-1300 ℃, preserving the heat for 30 minutes, and performing online degassing and purification for 60 minutes to obtain magnesium-aluminum-titanium-chromium alloy liquid;
and step S40, casting and forming the magnesium-aluminum-titanium-chromium alloy liquid into a magnesium-aluminum-titanium-chromium alloy ingot or rolling.
It should be noted that the melting point of magnesium is 648 ℃, and therefore, the embodiment requires that a pre-prepared aluminum alloy refining agent be added to the first induction furnace at a temperature below 648 ℃ to avoid magnesium spontaneous combustion.
In the embodiment, an ingot is added into a first induction furnace, a pre-prepared aluminum alloy refining agent is added into the first induction furnace to cover a magnesium ingot, the temperature is raised to 1000-1300 ℃, for example, 1000 ℃, or 1150 ℃ or 1300 ℃, the magnesium ingot is melted, the pre-prepared aluminum titanium chromium alloy ingot is added into the first induction furnace, the temperature is kept at 1000-1300 ℃, online degassing and purification are performed to obtain magnesium aluminum titanium chromium alloy liquid, and finally the magnesium aluminum titanium chromium alloy liquid is cast and formed into the magnesium aluminum titanium chromium alloy ingot or rolled, so that the chemical reaction of magnesium, oxygen and carbon dioxide or spontaneous combustion can be avoided in the process of preparing the magnesium aluminum titanium chromium alloy, and the magnesium aluminum titanium alloy can be produced without a closed container, thereby improving the operation convenience and improving the production efficiency and quality.
Further, in this embodiment, step S10, before the step of adding the magnesium ingot into the first induction furnace, further includes:
step S00, adding an aluminum ingot, potassium fluotitanate and an aluminum-chromium alloy in a second induction furnace according to a preset proportion to prepare an aluminum-titanium-chromium alloy ingot, wherein the aluminum ingot, the potassium fluotitanate and the aluminum-chromium alloy comprise, by mass, 4-12% of the aluminum ingot, 2.5-5% of the potassium fluotitanate and 2-8% of the aluminum-chromium alloy.
The second induction furnace and the first induction furnace can adopt the same induction furnace, the aluminum-titanium-chromium alloy ingot is prepared by adopting the first induction furnace, and then the magnesium-aluminum-titanium-chromium alloy is prepared by adopting the first induction furnace.
Further, in this embodiment, the aluminum alloy refining agent is K2MgCl4In step S10, the step of adding the magnesium ingot into the first electric induction furnace and heating further includes:
and step S01, adding aluminum into the third induction furnace, and heating and melting the aluminum to obtain an aluminum melt.
Step S02, adding preparation K into the third induction furnace according to a preset proportion2MgCl4Stirring the raw materials to obtain the aluminum alloy refining agent.
Wherein, theThe frequency of the third induction furnace is 50-150 HZ, and the preparation K is2MgCl4The raw materials comprise KCl and MgCl2The KCl and MgCl2In a molar ratio of 2: 1.
Specifically, aluminum can be heated to 1100 ℃ for melting to obtain an aluminum melt, and then KCl and MgCl are added into the third induction furnace according to the molar ratio of 2:12Keeping the temperature at 700-2MgCl4. The K is2MgCl4Can be used for 5 series high magnesium alloy products, and has good effect of preventing magnesium burning loss and aluminum oxidation in 5 series product aluminum refining.
The preparation method of the magnesium-aluminum-titanium-chromium alloy has the beneficial effects that: according to the invention, the ingot is firstly added into the first induction furnace, then the aluminium alloy refining agent prepared in advance is added into the first induction furnace to cover the magnesium ingot, the temperature is raised to 1000-1300 ℃, for example, 1000 ℃, or 1150 ℃ or 1300 ℃, the magnesium ingot is melted, then the aluminium titanium chromium alloy ingot prepared in advance is added into the first induction furnace, the temperature is kept at 1000-1300 ℃, online degassing and purification are carried out to obtain the magnesium aluminium titanium chromium alloy liquid, and finally the magnesium aluminium titanium chromium alloy liquid is cast and formed into the magnesium aluminium titanium chromium alloy ingot or is rolled, so that the magnesium aluminium titanium chromium alloy can be prevented from generating chemical reaction with oxygen and carbon dioxide or spontaneous combustion in the process of preparing the magnesium aluminium titanium chromium alloy, and therefore, the production of the magnesium aluminium titanium chromium alloy can be realized without a closed container, the operation convenience is improved, and the production efficiency and quality are improved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The preparation method of the magnesium-aluminum-titanium-chromium alloy is characterized in that the magnesium-aluminum-titanium-chromium alloy comprises the following components in percentage by mass: mg 80-95%, Al 5-18%, Ti0.5-1%, Cr 0.2-0.8%; the method comprises the following steps:
step S10, adding magnesium ingots into a first induction furnace;
step S20, adding a pre-prepared aluminum alloy refining agent into the first induction furnace to cover the magnesium ingot, heating to 1000-1300 ℃, and melting the magnesium ingot;
step S30, adding a pre-prepared aluminum-titanium-chromium alloy ingot into the first induction furnace, keeping the temperature at 1000-1300 ℃, and performing online degassing and purification to obtain magnesium-aluminum-titanium-chromium alloy liquid;
and step S40, casting and forming the magnesium-aluminum-titanium-chromium alloy liquid into a magnesium-aluminum-titanium-chromium alloy ingot or rolling.
2. The method of claim 1, wherein the step S10, before the step of adding the magnesium ingot into the first induction furnace, further comprises:
step S00, adding an aluminum ingot, potassium fluotitanate and an aluminum-chromium alloy in a second induction furnace according to a preset proportion to prepare an aluminum-titanium-chromium alloy ingot, wherein the aluminum ingot, the potassium fluotitanate and the aluminum-chromium alloy comprise, by mass, 4-12% of the aluminum ingot, 2.5-5% of the potassium fluotitanate and 2-8% of the aluminum-chromium alloy.
3. The method of claim 1, wherein the aluminum alloy refining agent is K2MgCl4The step S10, before the step of adding the magnesium ingot into the first induction furnace, further includes:
adding aluminum into the third induction furnace, and heating and melting the aluminum to obtain an aluminum melt;
adding preparation K into the third induction furnace according to a preset proportion2MgCl4Stirring the raw materials to obtain the aluminum alloy refining agent.
4. The method for producing Mg-Al-Ti-Cr alloy as claimed in claim 3, wherein the Mg-Al-Ti-Cr alloy is produced by a method comprisingIn that said preparation K2MgCl4The raw materials comprise KCl and MgCl2The KCl and MgCl2In a molar ratio of 2: 1.
5. The method for producing the magnesium-aluminum-titanium-chromium alloy according to claim 4, wherein the frequency of the third induction furnace is 50 to 150 Hz.
6. The method for producing the magnesium-aluminum-titanium-chromium alloy according to any one of claims 1 to 5, wherein the frequency of the first electric induction furnace is 100 to 200 Hz.
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Citations (8)
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|---|---|---|---|---|
| CN1865475A (en) * | 2006-06-12 | 2006-11-22 | 陈继忠 | Magnalium and method of manufacturing the same |
| CN101003083A (en) * | 2006-01-20 | 2007-07-25 | 中国科学院金属研究所 | Method for casting Mg-Al-Zn based magnesium alloy with high strength and high tenacity |
| CN101054638A (en) * | 2007-05-26 | 2007-10-17 | 太原理工大学 | Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof |
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2020
- 2020-01-16 CN CN202010049071.6A patent/CN111155009A/en active Pending
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| CN101054638A (en) * | 2007-05-26 | 2007-10-17 | 太原理工大学 | Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof |
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Application publication date: 20200515 |