CN103009012B - Strong aluminium-scandium alloy casing thermo shaping method in one - Google Patents
Strong aluminium-scandium alloy casing thermo shaping method in one Download PDFInfo
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- CN103009012B CN103009012B CN201310000689.3A CN201310000689A CN103009012B CN 103009012 B CN103009012 B CN 103009012B CN 201310000689 A CN201310000689 A CN 201310000689A CN 103009012 B CN103009012 B CN 103009012B
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Abstract
The present invention relates to strong aluminium-scandium alloy casing thermo shaping method in one, belong to technical field of material formation.Step comprises: 1) with oxy-acetylene spray gun heating core, heating-up temperature is 300 ~ 350 DEG C, and the heat time is 10 ~ 50min; 2) 5B70 alloy blank is loaded on the core of step 1); 3) spinning is carried out to setting shape; 4) spinning unloads the 5B70 alloy spinning part of setting shape after terminating; 5) 5B70 alloy spinning part step 4) obtained carries out machining, is then welded into casing.Casing mechanical property prepared by method of the present invention is good, 5B70 alloy sigma prepared by the method
b>=370MPa, σ
0.2>=230MPa, δ
5>=15%.
Description
Technical field
The present invention relates to strong aluminium-scandium alloy casing thermo shaping method in one, belong to technical field of material formation.
Background technology
Al-Mg alloy be can process, not heat-treatable strengthened alloy, in Al-Mg alloy, the 5A06 strength of alloy of (the Mg content 5% ~ 6%) of high strength is only 340MPa, and yield strength is the instructions for use that 180MPa cannot meet spacecraft of new generation.For this reason for China's spaceflight delivering tool to the high demand than strength aluminum alloy tank material of lightweight of new generation.
Scandium is up to the present found to the most effective alloy element of aluminium alloy, and Microamounts of Scandium joins in aluminium alloy, can significantly improve the even anti-neutron irradiation damage performance of the intensity of alloy, plasticity and welding performance, high-temperature behavior, etch resistant properties.The former Soviet Union just starts the research of Mo-bearing granitoid from the sixties in 20th century, and wherein 1570 alloys are the aluminium alloys adding Sc and develop on А М Г 6 alloy basis, is used for alternative А М Г 6 alloy.The former Soviet Union carried out the research of the preparation of 1570 alloy casings.The research of domestic Mo-bearing granitoid is started late, only carried out the research of minority industrialization aluminium-scandium alloy, wherein 5B70 alloy is at 5A06(LF6) Sc is added and the aluminium alloy developed in alloy basis, great majority research is the research carrying out the aspects such as the welding of 5B70 alloy, microstructure and corrosion resistance, in the forming technology of 5B70 alloy work carry out little.
Summary of the invention
The object of the invention is to propose strong aluminium-scandium alloy casing thermo shaping method in one, the mechanical property of the casing using the method to prepare is good.
The object of the invention is to be achieved through the following technical solutions.
Strong aluminium-scandium alloy casing thermo shaping method in one of the present invention, step comprises:
1) with oxy-acetylene spray gun heating core, heating-up temperature is 300 ~ 350 DEG C, and the heat time is 10 ~ 50min;
2) 5B70 alloy blank is loaded on the core of step 1);
3) carrying out spinning to setting shape, obtaining 5B70 alloy spinning part;
4) spinning unloads the 5B70 alloy spinning part of setting shape after terminating;
5) 5B70 alloy spinning part step 4) obtained carries out machining, is then welded into casing.
Described 5B70 alloy blank thickness is 12 ~ 15mm;
In described spinning process, spinning roller R angle is 15 ~ 20mm, and the temperature in spinning process is 350 ~ 450 DEG C, and mandrel rotary velocity is 20 ~ 40r/min, and feed rate is 0.8 ~ 1.5mm/r, and the thinning rate of passage is 20% ~ 35%.
The σ of the 5B70 alloy utilizing above-mentioned method to prepare
b>=370MPa, σ
0.2>=230MPa, δ
5>=15%(Mechanics Performance Testing adopts GB228); Compared with the hot rotating part of 5A06 alloy, tensile strength improves nearly 100MPa, and percentage elongation and welding performance and 5A06 alloy phase are worked as, and final plastic diameter is not less than 1000mm, the lightweight casing of wall thickness 2mm.
Beneficial effect
Casing mechanical property prepared by method of the present invention is good, 5B70 alloy sigma prepared by the method
b>=370MPa, σ
0.2>=230MPa, δ
5>=15%.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Strong aluminium-scandium alloy casing thermo shaping method in one, step comprises:
1) with oxy-acetylene spray gun heating core, heating-up temperature is 320 DEG C, and the heat time is 40min;
2) 5B70 alloy blank is loaded on the core of step 1);
3) carrying out spinning to conforming to core profile, obtaining 5B70 alloy spinning part;
4) spinning unloads 5B70 alloy spinning part after terminating;
5) 5B70 alloy spinning part step 4) obtained carries out machining, and to be then welded into diameter be 1000mm thickness is the casing of 2mm.
Described 5B70 alloy blank thickness is 15mm;
In described spinning process, spinning roller R angle is 15mm, and the temperature in spinning process is 350 DEG C, and mandrel rotary velocity is 40r/min, and feed rate is 1mm/r, and the thinning rate of passage is 30%.
The σ of the 5B70 alloy utilizing above-mentioned method to prepare
b>=370MPa, σ
0.2>=230MPa, δ
5>=15%(Mechanics Performance Testing adopts GB228); Compared with the hot rotating part of 5A06 alloy, tensile strength improves nearly 100MPa, and percentage elongation and welding performance and 5A06 alloy phase are worked as.
Claims (5)
1. a strong aluminium scandium 5B70 alloy tank body heat manufacturing process in, is characterized in that step comprises:
1) with oxy-acetylene spray gun heating core, heating-up temperature is 300 ~ 350 DEG C, and the heat time is 10 ~ 50min;
2) 5B70 alloy blank is loaded into step 1) core on;
3) spinning is carried out to setting shape;
4) spinning unloads the 5B70 alloy spinning part of setting shape after terminating, and obtains 5B70 alloy spinning part;
5) by step 4) the 5B70 alloy spinning part that obtains carries out machining, is then welded into casing;
Temperature in spinning process is 350 ~ 450 DEG C;
In spinning process, feed rate is 0.8 ~ 1.5mm/r;
In spinning process, the thinning rate of passage is 20% ~ 35%.
2. strong aluminium scandium 5B70 alloy tank body heat manufacturing process in one according to claim 1, is characterized in that: 5B70 alloy blank thickness is 12 ~ 15mm.
3. strong aluminium scandium 5B70 alloy tank body heat manufacturing process in one according to claim 1, is characterized in that: in spinning process, spinning roller R angle is 15 ~ 20mm.
4. strong aluminium scandium 5B70 alloy tank body heat manufacturing process in one according to claim 1, is characterized in that: spinning process core mould rotating speed is 20 ~ 40r/min.
5. strong aluminium scandium 5B70 alloy tank body heat manufacturing process in one according to claim 1, is characterized in that: step 4) σ of the 5B70 alloy of setting shape that obtains
b>=370MPa, σ
0.2>=230MPa, δ
5>=15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310000689.3A CN103009012B (en) | 2013-01-04 | 2013-01-04 | Strong aluminium-scandium alloy casing thermo shaping method in one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310000689.3A CN103009012B (en) | 2013-01-04 | 2013-01-04 | Strong aluminium-scandium alloy casing thermo shaping method in one |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103009012A CN103009012A (en) | 2013-04-03 |
| CN103009012B true CN103009012B (en) | 2015-08-19 |
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| CN201310000689.3A Active CN103009012B (en) | 2013-01-04 | 2013-01-04 | Strong aluminium-scandium alloy casing thermo shaping method in one |
Country Status (1)
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6902699B2 (en) * | 2002-10-02 | 2005-06-07 | The Boeing Company | Method for preparing cryomilled aluminum alloys and components extruded and forged therefrom |
| US7875132B2 (en) * | 2005-05-31 | 2011-01-25 | United Technologies Corporation | High temperature aluminum alloys |
| CN101643870A (en) * | 2009-08-28 | 2010-02-10 | 姜堰市万里特种合金铸造厂 | Scandium-aluminum alloy connecting rod material capable of hot forging |
| CN102345080B (en) * | 2010-07-29 | 2012-11-21 | 航天材料及工艺研究所 | Processing method for improving exfoliation corrosion resistance of 5B70 alloy |
| US9469892B2 (en) * | 2010-10-11 | 2016-10-18 | Engineered Performance Materials Company, Llc | Hot thermo-mechanical processing of heat-treatable aluminum alloys |
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2013
- 2013-01-04 CN CN201310000689.3A patent/CN103009012B/en active Active
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