CN115074565A - Zirconium adding method of zirconium-containing magnesium alloy - Google Patents
Zirconium adding method of zirconium-containing magnesium alloy Download PDFInfo
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- CN115074565A CN115074565A CN202210883282.9A CN202210883282A CN115074565A CN 115074565 A CN115074565 A CN 115074565A CN 202210883282 A CN202210883282 A CN 202210883282A CN 115074565 A CN115074565 A CN 115074565A
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- zirconium
- magnesium
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- containing 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
- 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
Abstract
The invention discloses a zirconium adding method of a zirconium-containing magnesium alloy, which comprises the steps of adding the zirconium-containing magnesium alloy in a magnesium-zirconium intermediate alloy mode, controlling the mass percent of zirconium element to be 2-5%, and controlling the balance to be magnesium. The invention can avoid the addition of excessive zirconium as much as possible, reduce the cost of raw materials and improve the quality of the alloy.
Description
Technical Field
The invention belongs to the technical field of non-ferrous metal production, and particularly relates to a zirconium adding method of a zirconium-containing magnesium alloy.
Background
Zinc is one of very important alloying elements in magnesium alloy, the solid solubility of zinc in magnesium is high, and the zinc can play a good role in solid solution strengthening, and in addition, the zinc can eliminate the adverse effect of impurity elements such as nickel, iron and the like in the alloy on the corrosion resistance. And different from magnesium-aluminum alloy, the magnesium-zinc alloy has coherent GP zone and semi-coherent intermediate precipitation phase precipitation in the aging process, thereby having stronger aging hardening effect and higher alloy strength. However, magnesium-zinc alloys have a problem that the crystal grains are coarse and difficult to be refined by casting, and therefore, it is necessary to add a modifier to refine the crystal grains. Zirconium element is considered to be the best refiner of magnesium-zinc alloy as a heterogeneous nucleation particle refining alloy casting alloy structure during the solidification process due to the similar lattice structure of zirconium element and magnesium.
Currently, there are two ways of adding zirconium in industrial applications, namely, the zirconium salt and the magnesium-zirconium master alloy. The zirconium salt is less adopted due to poor operation environment, more molten salt is more mingled, and more zirconium salt is added in a magnesium-zirconium intermediate alloy mode with higher zirconium content, wherein the mass percent of zirconium is basically between 25 and 40 percent. However, it should be noted that not all of the zirconium added to the alloy can perform the function of refining the crystal grains, and only the zirconium dissolved in the liquid metal during casting has the refining effect on the cast crystal grains, which causes a large amount of undissolved free zirconium simple substances in the melt, and these zirconium simple substances are easy to combine with elements in the melt such as Fe, Al, Si, etc. and settle to cause zirconium loss. Therefore, the addition method has the disadvantages that the loss of the zirconium element is serious, the yield is generally less than 30%, the excessive proportion of the zirconium needs to be added, and the zirconium belongs to a high-cost element, so that the cost of the raw material is increased sharply; in addition, excessive addition of zirconium can cause part of zirconium hard particles in a solidification structure, and the subsequent rolling processing yield of the alloy is remarkably reduced.
Therefore, how to provide a method for adding zirconium to a zirconium-containing magnesium alloy becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a zirconium adding method for a zirconium-containing magnesium alloy, which can avoid adding excessive zirconium as much as possible, reduce the cost of raw materials, and improve the quality of the alloy.
In order to achieve the purpose, the invention adopts the following technical scheme:
a zirconium adding method of zirconium-containing magnesium alloy adopts a magnesium-zirconium intermediate alloy mode to add, and controls the mass percent of zirconium element to be 2-5%, and the balance is magnesium.
Further, the method comprises the following steps:
1) the adding method comprises the following steps: the magnesium-zirconium intermediate alloy is added in a mode of charging along with a magnesium ingot;
2) melting temperature: the highest melting temperature is not more than 700 ℃, the overheating treatment temperature is 780-800 ℃, and the treatment time is 5 min.
Further, the method comprises the following steps:
1) preparing the required magnesium-zirconium intermediate alloy according to the components of the zirconium-containing magnesium alloy;
2) charging the preheated raw materials and magnesium ingots together with a furnace, setting the furnace temperature at 700 ℃, and stirring the melt for 10-15min after the furnace materials are completely melted;
3) after the melt temperature reaches 690-700 ℃, refining treatment is carried out by adopting a flux and a covering agent for 10-15 min;
4) rapidly heating to 780 ℃, preserving heat for 5min, cooling to 680-phase temperature of 700 ℃, standing for 40min, and then pouring.
Further, the ratio of zirconium element: 2 percent and the balance of magnesium.
Further, the ratio of zirconium element: 3 percent, and the balance being magnesium.
The invention has the beneficial effects that:
the invention can avoid the addition of excessive zirconium as much as possible, reduce the cost of raw materials and improve the quality of the alloy; the actual zirconium yield exceeds 80 percent in the alloy smelting process, and the cost of the zirconium-containing magnesium alloy material is reduced by more than 20 percent; can reduce the alloy smelting temperature, reduce the alloy oxidation burning loss and improve the melt quality.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a zirconium adding method of a zirconium-containing magnesium alloy, which adopts a magnesium-zirconium intermediate alloy mode to add, and controls the mass percent of zirconium element to be 2-5%, and the balance of magnesium.
A zirconium adding method of a zirconium-containing magnesium alloy comprises the following steps:
1) the adding method comprises the following steps: the magnesium-zirconium intermediate alloy is added in a mode of charging along with a magnesium ingot;
2) melting temperature: the highest melting temperature is not more than 700 ℃, the overheating treatment temperature is 780-800 ℃, and the treatment time is 5 min.
A zirconium adding method of a zirconium-containing magnesium alloy comprises the following steps:
1) preparing the required magnesium-zirconium intermediate alloy according to the components of the zirconium-containing magnesium alloy;
2) charging the preheated raw materials and magnesium ingots together with a furnace, setting the furnace temperature at 700 ℃, and stirring the melt for 10-15min after the furnace materials are completely melted;
3) after the melt temperature reaches 690-700 ℃, refining treatment is carried out by adopting a flux and a covering agent for 10-15 min;
4) rapidly heating to 780 ℃, preserving heat for 5min, cooling to 680-phase temperature of 700 ℃, standing for 40min, and then pouring.
Comparative example
The alloy of the comparative example has the grade ZM1, the zirconium addition mode is a magnesium-zirconium intermediate alloy, and the alloy comprises the following components in percentage by mass: zirconium element: 30%, magnesium element: and the balance.
The adding method comprises the following steps:
1) preparing the required magnesium-zirconium intermediate alloy according to the components of the zirconium-containing magnesium alloy;
2) charging a magnesium ingot with the furnace after the crucible is preheated, setting the furnace temperature at 730 ℃, adding a zinc ingot after the furnace charge is completely melted, and stirring the melt for 10-15 min;
3) after the temperature of the melt reaches 730-750 ℃, adding magnesium-zirconium intermediate alloy, stirring the melt for 5-10min after melting, and then refining by adopting a flux and a covering agent for 10-15 min;
4) cooling to 700 ℃ and 730 ℃, standing for 40min, and then pouring.
And (3) carrying out component analysis and mechanical property test on the pouring sample, and calculating the zirconium yield, wherein the result is as follows:
example 1
Example 1 alloy designation ZM1, zirconium addition mode is a magnesium zirconium master alloy comprising the following components in mass percent: zirconium element: 2%, magnesium element: and (4) the balance.
The adding method comprises the following steps:
1) preparing the required magnesium-zirconium intermediate alloy according to the components of the zirconium-containing magnesium alloy;
2) charging the preheated raw materials and magnesium ingots together with a furnace, setting the furnace temperature at 700 ℃, and stirring the melt for 10-15min after the furnace materials are completely melted;
3) after the melt temperature reaches 690-700 ℃, refining treatment is carried out by adopting a flux and a covering agent for 10-15 min;
4) rapidly heating to 780 ℃, preserving heat for 5min, cooling to 680-phase temperature of 700 ℃, standing for 40min, and then pouring.
And (3) carrying out component analysis and mechanical property test on the pouring sample, and calculating the zirconium yield, wherein the result is as follows:
example 2
Example 2 alloy designation ZM1, zirconium addition mode is magnesium zirconium master alloy, comprising the following components by mass percent: zirconium element: 3%, magnesium element: and (4) the balance.
The adding method comprises the following steps:
1) preparing the required magnesium-zirconium intermediate alloy according to the components of the zirconium-containing magnesium alloy;
2) charging the preheated raw materials and magnesium ingots together with a furnace, setting the furnace temperature at 700 ℃, and stirring the melt for 10-15min after the furnace materials are completely melted;
3) after the melt temperature reaches 690-700 ℃, refining treatment is carried out by adopting a flux and a covering agent for 10-15 min;
4) rapidly heating to 780 ℃, preserving heat for 5min, cooling to 680-phase temperature of 700 ℃, standing for 40min, and then pouring.
And (3) carrying out component analysis and mechanical property test on the pouring sample, and calculating the zirconium yield, wherein the result is as follows:
the invention can avoid the addition of excessive zirconium as much as possible, reduce the cost of raw materials and improve the quality of the alloy; the actual zirconium yield exceeds 80 percent in the alloy smelting process, and the cost of the zirconium-containing magnesium alloy material is reduced by more than 20 percent; can reduce the alloy smelting temperature, reduce the alloy oxidation burning loss and improve the melt quality.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A zirconium adding method of zirconium-containing magnesium alloy is characterized in that magnesium-zirconium intermediate alloy is adopted, the mass percent of zirconium element is controlled to be 2% -5%, and the balance is magnesium.
2. The method for adding zirconium to the zirconium-containing magnesium alloy according to claim 1, comprising the steps of:
1) the adding method comprises the following steps: the magnesium-zirconium intermediate alloy is added in a mode of charging along with a magnesium ingot;
2) melting temperature: the highest melting temperature is not more than 700 ℃, the overheating treatment temperature is 780-800 ℃, and the treatment time is 5 min.
3. The method for adding zirconium to the zirconium-containing magnesium alloy according to claim 2, comprising the steps of:
1) preparing the required magnesium-zirconium intermediate alloy according to the components of the zirconium-containing magnesium alloy;
2) charging the preheated raw materials and magnesium ingots together with a furnace, setting the furnace temperature at 700 ℃, and stirring the melt for 10-15min after the furnace materials are completely melted;
3) after the melt temperature reaches 690-700 ℃, refining treatment is carried out by adopting a flux and a covering agent for 10-15 min;
4) rapidly heating to 780 ℃, preserving heat for 5min, cooling to 680-phase temperature of 700 ℃, standing for 40min, and then pouring.
4. The method of claim 1, wherein the ratio of zirconium element: 2 percent and the balance of magnesium.
5. The method of claim 1, wherein the ratio of zirconium element: 3 percent of magnesium and the balance of magnesium.
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| CN202210883282.9A CN115074565A (en) | 2022-07-26 | 2022-07-26 | Zirconium adding method of zirconium-containing magnesium alloy |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10280063A (en) * | 1997-04-04 | 1998-10-20 | Toyota Central Res & Dev Lab Inc | Method for adding zirconium to magnesium alloy |
| RU2230816C2 (en) * | 2002-09-11 | 2004-06-20 | Открытое акционерное общество "Соликамский магниевый завод" | Method of production of magnesium-zirconium foundry alloys |
| CN104313360A (en) * | 2014-11-14 | 2015-01-28 | 重庆大学 | Method for purifying magnesium melt by adding zirconium |
| CN108342630A (en) * | 2018-05-18 | 2018-07-31 | 句容百利镁合金材料科技有限公司 | The preparation method of magnesium alloy, the preparation method of magnesium alloy profiles and magnesium alloy rim |
| CN114164363A (en) * | 2021-12-15 | 2022-03-11 | 重庆工业职业技术学院 | High-strength and high-toughness cast magnesium alloy and preparation method thereof |
| CN114262811A (en) * | 2021-12-23 | 2022-04-01 | 上海交通大学 | Method for improving magnesium alloy refining effect of Mg-Zr intermediate alloy |
-
2022
- 2022-07-26 CN CN202210883282.9A patent/CN115074565A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10280063A (en) * | 1997-04-04 | 1998-10-20 | Toyota Central Res & Dev Lab Inc | Method for adding zirconium to magnesium alloy |
| RU2230816C2 (en) * | 2002-09-11 | 2004-06-20 | Открытое акционерное общество "Соликамский магниевый завод" | Method of production of magnesium-zirconium foundry alloys |
| CN104313360A (en) * | 2014-11-14 | 2015-01-28 | 重庆大学 | Method for purifying magnesium melt by adding zirconium |
| CN108342630A (en) * | 2018-05-18 | 2018-07-31 | 句容百利镁合金材料科技有限公司 | The preparation method of magnesium alloy, the preparation method of magnesium alloy profiles and magnesium alloy rim |
| CN114164363A (en) * | 2021-12-15 | 2022-03-11 | 重庆工业职业技术学院 | High-strength and high-toughness cast magnesium alloy and preparation method thereof |
| CN114262811A (en) * | 2021-12-23 | 2022-04-01 | 上海交通大学 | Method for improving magnesium alloy refining effect of Mg-Zr intermediate alloy |
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