CN111020266A - Process method and device for improving mechanical property of aluminum alloy - Google Patents
Process method and device for improving mechanical property of aluminum alloy Download PDFInfo
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- CN111020266A CN111020266A CN201911270288.3A CN201911270288A CN111020266A CN 111020266 A CN111020266 A CN 111020266A CN 201911270288 A CN201911270288 A CN 201911270288A CN 111020266 A CN111020266 A CN 111020266A
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- aluminum alloy
- aluminum
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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
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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
- C22C1/026—Alloys based on aluminium
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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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon 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
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
Abstract
The invention relates to a process method and a device for improving the mechanical property of aluminum alloy. The method comprises the following steps: after the aluminum alloy is smelted under the atmospheric condition, the smelted aluminum alloy is subjected to grain refinement treatment by using Al-Ti-B to obtain the aluminum alloy meeting the requirements. The invention solves the problem that the aluminum-silicon series and aluminum-copper series aluminum alloy castings have stable mechanical properties under the condition of atmospheric smelting and pouring, meet the requirements of stable mechanical properties of aviation type products and meet aviation standards.
Description
Technical Field
The invention relates to the technical field of aluminum alloy casting, in particular to a process method and a device for improving the mechanical property of aluminum alloy.
Background
Aluminum-silicon series and aluminum-copper series aluminum alloys belong to the most common cast aluminum alloys and are widely used in aviation products, but the mechanical properties of castings after heat treatment in the production process under atmospheric conditions are not stable enough, so that the whole furnace of the castings is scrapped in batches, and the delivery of the castings and the normal delivery and use of aviation weapon equipment are directly influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the aluminum-silicon series and aluminum-copper series aluminum alloy casting has stable mechanical property under the condition of atmosphere smelting and pouring, meets the requirements of stable mechanical property of aviation type products and aviation standards.
The technical scheme of the invention is as follows:
in a first aspect, a process for improving the mechanical properties of an aluminum alloy is provided, which comprises:
after the aluminum alloy is smelted under the atmospheric condition, the smelted aluminum alloy is subjected to grain refinement treatment by using Al-Ti-B to obtain the aluminum alloy meeting the requirements.
Further, after the aluminum alloy is smelted under the atmospheric condition, Al-Ti-B is used for carrying out grain refinement treatment on the smelted aluminum alloy to obtain the aluminum alloy meeting the requirements, and the method comprises the following steps:
heating the aluminum alloy until the aluminum alloy is completely melted;
and when the heating temperature reaches the preset temperature, adding Al-Ti-B grain refiner with a preset proportion into the molten aluminum alloy, and fully stirring the Al-Ti-B grain refiner and the molten aluminum alloy to obtain the aluminum alloy meeting the requirements, wherein the aluminum alloy materials are different, and the preset temperatures are different.
Further, the aluminum alloy includes: aluminum-silicon alloy, aluminum-copper alloy.
Further, the preset proportion is in the range of 0.8% -1.2%.
In a second aspect, a process apparatus for improving mechanical properties of an aluminum alloy is provided, comprising:
and the processing module is used for carrying out grain refinement treatment on the smelted aluminum alloy by using Al-Ti-B after the aluminum alloy is smelted under the atmospheric condition to obtain the aluminum alloy meeting the requirement.
The invention has the beneficial effects that: the Al-Ti-B intermediate alloy is adopted to process in the smelting process of the aluminum-silicon series and aluminum-copper series aluminum alloys under the atmosphere smelting and pouring conditions to obtain the mechanical properties meeting the standard requirements, and the mechanical properties are verified to be stable in multiple batches, so that the requirements of aeronautical weaponry on aluminum alloy castings are met, and a new selection way is provided for the preparation of aluminum-silicon series aluminum alloys and aluminum-copper series aluminum alloy castings.
Detailed Description
In combination with the comparison of mechanical property data of the aluminum alloys ZL116 and ZL201 produced by the manufacturers for a long time, the Al-Ti-B intermediate alloy is adopted for treatment before the melting and pouring of the alloys, so that the aim of refining grains in the process of casting solidification is fulfilled, and the comprehensive mechanical property is improved.
The invention is further illustrated by the following specific examples:
1. a ZL116 aluminum alloy bracket casting used for a certain device needs to meet the tensile strength of б B and more than or equal to 300MPa and the section elongation of delta 5 and more than or equal to 2.0 percent under the condition of T5, so that the casting is poured by adopting the refining treatment of Al-Ti-B crystal grains after the resistance furnace smelting under the atmospheric condition of the invention, namely, ZL116 aluminum alloy ingots are firstly added into a resistance furnace body, the power is switched on, the temperature is raised, after the alloy ingots and the like are completely molten, 1 percent of Al-Ti-B crystal grain refiner is added when the temperature is measured to 710-730 ℃, after the mixture is fully stirred, argon and refining agent are used for degassing, after the mixture is kept for 15min, a shell casting and a furnace sample are poured, the preparation of the bracket is completed, and the heat treatment state of the casting and the sample T5 is that the solid solution treatment (the casting is subjected to heat preservation at 535 +/-5 ℃ for 10 hours, the furnace water cooling) and the aging treatment (the casting is subjected to heat.
2. A ZL201 aluminum alloy gun beam casting used for a certain device needs to meet the requirements that б B is more than or equal to 330MPa and delta 5 is more than or equal to 4% under the condition of T4, therefore, the Al-Ti-B grain refining treatment is added to a resistance furnace for casting under the atmospheric condition, the electric heating is carried out, ZL201 aluminum alloy ingot is added into a resistance furnace body firstly, after the alloy ingot and the like are completely melted, 1% of Al-Ti-B grain refining agent is added when the temperature is measured to 720-740 ℃, after the alloy ingot and the like are fully stirred, argon and refining agent are used for degassing and standing for 20min, then the gun beam casting and a furnace sample are cast, the preparation of the gun beam is completed, and the heat treatment state of the sample T4 is that solution treatment (heat preservation is carried out at 530 +/-5 ℃ for 8 hours, then heat preservation is carried out at 543 +/-5 ℃ for 8 hours, furnace discharging and water cooling), and the ZL201 castings prepared by the.
Test results prove that: six continuous tensile force test results of ZL116 and ZL201 respectively meet the standard requirements of aviation materials and alloys, meet the use requirements of development of aviation weaponry on aluminum alloy castings, and provide a new selection approach for preparation of ZL116 and ZL201 aluminum alloy castings.
The results of the additional tests are shown in Table 1 below.
TABLE 1
Note: the standard heat treatment system comprises: solid solution is carried out for (530-540) DEG C (8-12) h, and aging is carried out for (170-180) DEG C (4-8) h. Actual heat treatment schedule: solution treatment: keeping the temperature at 535 +/-5 ℃ for 10 hours, discharging from the furnace, cooling by water, and carrying out aging treatment: keeping the temperature at 175 +/-5 ℃ for 6 hours, discharging and air cooling.
TABLE 2
Note: the standard heat treatment system comprises: solid solution is carried out at 530-540 ℃ for 2-6 h. Actual heat treatment schedule: keeping the temperature at 535 +/-5 ℃ for 6 hours, discharging and cooling.
Claims (5)
1. A process for improving the mechanical properties of an aluminum alloy, which is characterized by comprising the following steps:
after the aluminum alloy is smelted under the atmospheric condition, the smelted aluminum alloy is subjected to grain refinement treatment by using Al-Ti-B to obtain the aluminum alloy meeting the requirements.
2. The method of claim 1, wherein after the aluminum alloy is smelted under the atmospheric condition, the smelted aluminum alloy is subjected to grain refinement treatment by using Al-Ti-B to obtain the aluminum alloy meeting the requirement, and the method comprises the following steps:
heating the aluminum alloy until the aluminum alloy is completely melted;
and when the heating temperature reaches the preset temperature, adding Al-Ti-B grain refiner with a preset proportion into the molten aluminum alloy, and fully stirring the Al-Ti-B grain refiner and the molten aluminum alloy to obtain the aluminum alloy meeting the requirements, wherein the aluminum alloy materials are different, and the preset temperatures are different.
3. The method of claim 1, wherein the aluminum alloy comprises: aluminum-silicon alloy, aluminum-copper alloy.
4. The method according to claim 1, wherein the predetermined ratio is in the range of 0.8% to 1.2%.
5. A process unit for improving mechanical properties of aluminum alloy is characterized by comprising the following steps:
and the processing module is used for carrying out grain refinement treatment on the smelted aluminum alloy by using Al-Ti-B after the aluminum alloy is smelted under the atmospheric condition to obtain the aluminum alloy meeting the requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270288.3A CN111020266A (en) | 2019-12-11 | 2019-12-11 | Process method and device for improving mechanical property of aluminum alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911270288.3A CN111020266A (en) | 2019-12-11 | 2019-12-11 | Process method and device for improving mechanical property of aluminum alloy |
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| Publication Number | Publication Date |
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| CN111020266A true CN111020266A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911270288.3A Pending CN111020266A (en) | 2019-12-11 | 2019-12-11 | Process method and device for improving mechanical property of aluminum alloy |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407316A (en) * | 2011-11-28 | 2012-04-11 | 苏州华荣有色金属制造有限公司 | Casting method for reducing internal shrinkage porosity of alminal cast |
| CN104232957A (en) * | 2013-06-13 | 2014-12-24 | 无锡市森信精密机械厂 | Preparation method for Al-Cu alloy |
| CN108165785A (en) * | 2017-12-29 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of aluminum grain refinement method |
| CN110340297A (en) * | 2019-07-30 | 2019-10-18 | 贵州安吉航空精密铸造有限责任公司 | A kind of casting method of metal alloy castings |
-
2019
- 2019-12-11 CN CN201911270288.3A patent/CN111020266A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407316A (en) * | 2011-11-28 | 2012-04-11 | 苏州华荣有色金属制造有限公司 | Casting method for reducing internal shrinkage porosity of alminal cast |
| CN104232957A (en) * | 2013-06-13 | 2014-12-24 | 无锡市森信精密机械厂 | Preparation method for Al-Cu alloy |
| CN108165785A (en) * | 2017-12-29 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of aluminum grain refinement method |
| CN110340297A (en) * | 2019-07-30 | 2019-10-18 | 贵州安吉航空精密铸造有限责任公司 | A kind of casting method of metal alloy castings |
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Application publication date: 20200417 |