CN101417388B - Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame - Google Patents
Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame Download PDFInfo
- Publication number
- CN101417388B CN101417388B CN2008102437173A CN200810243717A CN101417388B CN 101417388 B CN101417388 B CN 101417388B CN 2008102437173 A CN2008102437173 A CN 2008102437173A CN 200810243717 A CN200810243717 A CN 200810243717A CN 101417388 B CN101417388 B CN 101417388B
- Authority
- CN
- China
- Prior art keywords
- alloy
- preparation
- aluminum
- electromagnetic field
- composites
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention relates to a preparation technology of aluminum-matrix in-situ composites, in particular to a preparation method of light-weight high-strength aluminum-matrix in-situ composites used in cable testing bridges. The method includes the following specific steps: alloy is melted according to requirements of mixture ratios of components of aluminium alloy 6061, 6063 or 6070; mischmetal with the mass of 0.2 to 0.4 percent of that of the aluminium alloy is added and reaction materials of the composites are added through a dusting device for reaction synthesis of particle reinforced aluminum-matrix composites; chemical constituents are adjusted on grounds of demand; Al-5Ti-1B wires with the mass of 0.15 to 0.20 percent of that of the aluminium alloy are added for refining treatment and then semicontinuous casting; ingots are carried out homogenization treatment; and the testing bridges are obtained through the technologies of hot extrusion and hot treatment. The invention is simple and convenient in technology and controllable in constitution of the composites and the combination property of the bridges of the particle reinforced aluminum-matrix composites is obviously improved, thus meeting requirements of more high-standard construction.
Description
Technical field
The present invention relates to the aluminum-based in-situ composite materials technology of preparing, gather by fusant reaction synthetic technology under the electromagnetic field and semi-continuous casting technology in particular to a kind of, the preparation submicron particles strengthens 6061,6063 or 6070 Al-alloy based in-situ composite bars, through technical process such as homogenising processing, hot extrusion, heat treatments, produce the method for high-grade cable testing bridge then with aluminum matrix composite.
Background technology
Cable testing bridge is an important matched structural during electrical engineering is installed.China's cable testing bridge technology in 20th century 70, the eighties successively from external introduction and develop rapidly.The cable testing bridge that uses generally adopts steel design at present, but the steel cable testing bridge easily is corroded, the life-span short, needs the periodic maintenance maintenance, lays a large amount of cables above the installation back in addition, and maintenance difficulty is big, brings many trouble and worry and trouble to the user.Along with the raising of construction quality requirement, to also having higher requirement the service life of cable testing bridge.Along with the continuous development of aluminum alloy materials, domestic part enterprise is with reference to foreign standard, and in conjunction with China's national situation, the aluminium alloy cable crane span structure that adopts new construction, new technology to develop has characteristics such as corrosion-resistant, in light weight, good looking appearance easy for installation.
Aluminium alloy cable crane span structure generally is made of terraced limit longeron and crosspiece.Be divided into by cable testing bridge longeron form: A type (the high 60mm of longeron), Type B (the high 100mm of longeron), C type (the high 150mm of longeron).A, B, C type are called light-duty, heavy, scale-up version respectively.Be divided into by the processing assembly shape: curved logical, the threeway of straightway, level, four-way, curved logical etc. vertically, carry out choose reasonable for laying different paths.Version by cable testing bridge can be divided into ladder, truss (porose and atresia).The specification of crane span structure fabric width 100～1000mm scope is by interval 100mm unit stepping.
At present the crane span structure aluminum alloy materials that adopts mostly is 6061,6063 trades mark, and strength character is lower, is difficult to satisfy the needs that high standard is built, as the needs of occasions such as anti-freezing, snow disaster or big load.High performance cable crane span structure product often requires selected material to have higher specific strength, improved comprehensive mechanical performance.The particle-reinforced aluminum base in-situ composite directly forms from matrix owing to strengthening body, strengthen between body and the matrix and have the good interface matching relationship, make it have good comprehensive performances, sub-micron granule strengthening aluminum base in-situ composite particularly, have characteristics such as specific strength height, designability are strong, be fit to very much the cable testing bridge Products Development and use.Yet it is many that the cable testing bridge product is formed member, the manufacturing process more complicated, and the particle-reinforced aluminum base in-situ composite is applied to the cable testing bridge product does not also have relevant report.
Summary of the invention
The present invention is directed to the lower deficiency of aluminum current alloy crane span structure product strength performance, adopt the synthetic integrated technology with semi-continuous casting of fusant reaction under the electromagnetic field, developed the sub-micron granule strengthening aluminum base composite material that is used for cable testing bridge.
Particularly be:
According to 6061,6063 or 6070 al alloy component ratio requirement molten alloy; The mishmetal that adds aluminium alloy quality 0.2～0.4%, and by dusting device adding composite reaction raw materials, the reaction of carrying out particle enhanced aluminum-based composite material is synthetic; Adjust chemical composition as required; The Al-5Ti-1B aluminium titanium boron wire that adds aluminium alloy quality 0.15～0.20% carries out thinning processing, carries out semi-continuous casting then; Then ingot casting being carried out homogenising handles; Obtain the aluminum matrix composite crane span structure through hot extrusion technique and Technology for Heating Processing again.
Among the above-mentioned preparation method, the molten alloy process is: after the raw material for the treatment of aluminium alloy or preparation aluminium alloy melts fully, be warming up to 760 ℃, leave standstill 15～20min after slowly stirring; Adopt part to reserve aluminium ingot and cool to 740 ℃, injection refining is handled 10～15min in the stove, leaves standstill 10～15min.
Among the above-mentioned preparation method, the reaction building-up process of particle enhanced aluminum-based composite material is: under electromagnetic field in the fusant reaction synthesizer, add the composite reaction raw materials by podwer gun, addition is advisable 3～8% with the theoretical volume mark of the enhancing particle that assurance generates; Add electromagnetic field while dusting and stir, leave standstill 8～12min after the end of dusting.
Above-mentioned preparation method, reaction raw materials is can generate salt or the compound that strengthens particle with the reaction of aluminium liquid, as ZrCO
3Or ZrO powder.
Among the above-mentioned preparation method, electromagnetic field refers to guarantee to strengthen particle equally distributed all kinds electromagnetic field in aluminum melt, and as pulse electromagnetic field, electromagnetic field of high frequency, electromagnetic field intensity is 0.05～0.20T.
Among the above-mentioned preparation method, the process of adjusting chemical composition is: if composition measurement result and alloy designations composition require to exist deviation, then add Al-Mg intermediate alloy or pure Mg and Al-Zn intermediate alloy or pure Zn, meet trade mark requirement until alloy composition according to actual conditions.
Among the above-mentioned preparation method, the semi-continuous casting process is: adopt the twin-stage foam ceramic filter, and semi-continuous casting, pouring temperature is controlled at 690～715 ℃;
Above-mentioned preparation method, the homogenising treatment process is: after the ingot casting cooling, handled 6 hours 560 ℃ of homogenising, forced air-cooling or water-cooled to 250 ℃ then, cooling velocity guarantees at 350-500 ℃/h, stops 0.5h, again below the water-cooled to 50 ℃.
Among the above-mentioned preparation method, hot extrusion technique is: 480～500 ℃ of forward extrusion ingot casting heating-up temperatures, 450～470 ℃ of mold temperatures, 400～450 ℃ of recipient preheat temperatures; 500～540 ℃ of discharging opening temperature; Extrusion speed (the die orifice rate of outflow) 8～10m/min.
Among the above-mentioned preparation method, Technology for Heating Processing is: T6 handles or online shrend+Ageing Treatment, that is: 1) T6 handles, and 545 ± 5 ℃ of solution treatment be incubateds 2 hours, quenching then, and water temperature is not higher than 40 ℃; Institution of prescription is 170 ℃, 6h.2) online shrend+Ageing Treatment, the tank press quenching is adopted in the extrusion die exit, and outlet temperature is not less than 520 ℃, and water temperature is not higher than 40 ℃; Institution of prescription is 170 ℃, 6h.
Adopt technical method of the present invention, have following advantage:
1) technology is easy, adopts ripe at present production technology fully, does not need substantially existing process equipment is transformed;
2) formation of composite is controlled, and the mechanical property of material can require rationally to adjust according to practice of construction;
The combination property of the particle enhanced aluminum-based composite material crane span structure of 3) being produced obviously improves, and can satisfy more high standard requirements on Construction.
The specific embodiment
The present invention can implement according to following example, but is not limited to following example.
Embodiment 1
Prepare 6061 alloy 1000Kg, in gas-fired air furnace, carry out melting, treat to be warming up to 760 ℃ after furnace charge melts fully, leave standstill 15min after slowly stirring.Adopt part 6061 alloy pigs to cool to 740 ℃, injection refining is handled 10min in the stove, leaves standstill 20min again.Add Al-10RE% intermediate alloy 20Kg, add 80Kg composite reaction raw materials ZrCO by dusting device
3, adding pulse electromagnetic field while dusting and stir, the average electrical magnetic field intensity is 0.2T; Leave standstill 12min after having sprayed, the Al-Mg intermediate alloy that adds 2Kg is then adjusted alloy composition.Add Al-5Ti-1B aluminium titanium boron wire 1.5Kg and carry out thinning processing, adopt the twin-stage foam ceramic filter, carry out semi-continuous casting at 715 ℃ then.After the ingot casting cooling, handled 6 hours 560 ℃ of homogenising, be cooled fast to 250 ℃ by water-cooled then, cooling velocity guarantees at 500 ℃/h, stops 0.5h, again below the water-cooled to 50 ℃.500 ℃ of forward extrusion ingot casting heating-up temperatures, 470 ℃ of mold temperatures, 450 ℃ of recipient preheat temperatures; 500 ℃ of discharging opening temperature; Extrusion speed (the die orifice rate of outflow) 8m/min.Extrudate reheats 540 ℃, is incubated 2 hours, carries out shrend then, and the quenching water temperature is not higher than 40 ℃, then at 170 ℃ of timeliness 6h.In the crane span structure material that is obtained, the Al of generation
2O
3, Al
3The Zr particle is tiny, and disperse distributes on matrix, and intensity is brought up to 340MPa, and percentage elongation is 11%.
Embodiment 2
According to the composition requirement of 6063 alloys, prepare fine aluminium ingot 970Kg, Al-20wt%Si alloy 20Kg, cathode copper 1Kg, in gas-fired air furnace, carry out melting, treat to be warming up to 760 ℃ after furnace charge melts fully, leave standstill 18min after slowly stirring; Adopt part to reserve aluminium ingot and cool to 740 ℃, injection refining is handled 13min in the stove, leaves standstill 25min again.Add 50Kg composite reaction raw materials ZrCO by dusting device
3, adding the electromagnetic field of high frequency while dusting and stir, the average electrical magnetic field intensity is 0.12T, leaves standstill 10min after the end of dusting, magnesium ingot 8Kg, Al-10wt%Zn intermediate alloy 10Kg adjust alloy composition then.Add Al-5Ti-1B aluminium titanium boron wire 2Kg and carry out thinning processing, adopt the twin-stage foam ceramic filter, carry out semi-continuous casting at 700 ℃.After the ingot casting cooling, handled 6 hours 560 ℃ of homogenising, forced air-cooling is cooled fast to 250 ℃ then, and cooling velocity guarantees at 350 ℃/h, stops 0.5h, again below the water-cooled to 50 ℃.490 ℃ of forward extrusion ingot casting heating-up temperatures, 460 ℃ of mold temperatures, 430 ℃ of recipient preheat temperatures; 520 ℃ of discharging opening temperature; Extrusion speed (the die orifice rate of outflow) 9m/min.Reheat 550 ℃, be incubated 2 hours, shrend, the quenching water temperature is not higher than 40 ℃, then at 170 ℃ of timeliness 6h.In the crane span structure material that is obtained, the Al of generation
2O
3, Al
3The Zr particle is tiny, and disperse distributes on matrix, and intensity is brought up to 320MPa, and percentage elongation is 12%.
Embodiment 3
Composition according to 6070 alloys requires to prepare fine aluminium ingot 900Kg, Al-20wt%Si alloy 60Kg, cathode copper 3Kg, carries out melting in gas-fired air furnace, treats to be warming up to 760 ℃ after furnace charge melts fully, leaves standstill 20min after slowly stirring; Adopt part to reserve aluminium ingot and cool to 740 ℃, injection refining is handled 15min in the stove, leaves standstill 30min again.Add 40Kg composite reaction raw materials ZrO powder by dusting device, add the electromagnetic field of high frequency stirs while dusting, the average electrical magnetic field intensity is 0.05T, leaves standstill 8min after having sprayed, and adds Al-20wt%Mg intermediate alloy 40Kg, pure zinc 2Kg then and adjusts alloy composition.Add Al-5Ti-1B aluminium titanium boron wire 1.8Kg and carry out thinning processing, 715 ℃ are carried out semi-continuous casting.After the ingot casting cooling, handled 6 hours 560 ℃ of homogenising, be cooled fast to 250 ℃ with powerful air-flow then, cooling velocity guarantees at 400 ℃/h, stops 0.5h, again below the water-cooled to 50 ℃.480 ℃ of forward extrusion ingot casting heating-up temperatures, 460 ℃ of mold temperatures, 420 ℃ of recipient preheat temperatures; 530 ℃ of discharging opening temperature; Extrusion speed (the die orifice rate of outflow) 10m/min.The tank press quenching is adopted in the extrusion die exit, and water temperature keeps not being higher than 40 ℃, then at 170 ℃ of timeliness 6h.In the crane span structure material that is obtained, the Al of generation
2O
3, Al
3The Zr particle is tiny, and disperse distributes on matrix, and intensity is brought up to 380MPa, and percentage elongation is 10%.
Claims (3)
1. the preparation method of a light high-intensity aluminum base home-position composite material for cable bridge frame, be specially: according to 6061,6063 or 6070 al alloy component ratio requirement molten alloy, the molten alloy process is: treat aluminium alloy or the preparation aluminium alloy raw material melt fully after, be warming up to 760 ℃, leave standstill 15～20min after slowly stirring; Adopt part to reserve aluminium ingot and cool to 740 ℃, injection refining is handled 10～15min in the stove, leaves standstill 10～15min; The mishmetal that adds aluminium alloy quality 0.2～0.4%, and the reaction of carrying out particle enhanced aluminum-based composite material is synthetic, the reaction building-up process of particle enhanced aluminum-based composite material is: under electromagnetic field in the fusant reaction synthesizer, add composite reaction raw materials ZrCO3 or ZrO by podwer gun, addition with the theoretical volume mark of the enhancing particle that guarantees to generate 3～8%; Add electromagnetic field while dusting and stir, leave standstill 8～12min after the end of dusting; Adjust chemical composition as required; The Al-5Ti-1B aluminium titanium boron wire that adds aluminium alloy quality 0.15～0.20% carries out thinning processing, carries out the semi-continuous casting process then, and the semi-continuous casting process is: adopt the twin-stage foam ceramic filter, and semi-continuous casting, pouring temperature is controlled at 690～715 ℃; Then ingot casting is carried out homogenising and handle, the homogenising treatment process is: after the ingot casting cooling, handled 6 hours 560 ℃ of homogenising, and forced air-cooling or water-cooled to 250 ℃ then, cooling velocity guarantees at 350-500 ℃/h, stops 0.5h, again below the water-cooled to 50 ℃; Obtain the aluminum matrix composite crane span structure through hot extrusion technique and Technology for Heating Processing again; Hot extrusion technique is: 480～500 ℃ of forward extrusion ingot casting heating-up temperatures, 450～470 ℃ of mold temperatures, 400～450 ℃ of recipient preheat temperatures; 500～540 ℃ of discharging opening temperature; Extrusion speed 8～10m/min; Technology for Heating Processing is: T6 handles or online shrend+Ageing Treatment, that is: 1) T6 handles, and 545 ± 5 ℃ of solution treatment be incubateds 2 hours, quenching then, and water temperature is not higher than 40 ℃; Institution of prescription is 170 ℃, 6h, 2) online shrend+Ageing Treatment, the tank press quenching is adopted in the extrusion die exit, and outlet temperature is not less than 520 ℃, and water temperature is not higher than 40 ℃; Institution of prescription is 170 ℃, 6h.
2. preparation method according to claim 1 is characterized in that: electromagnetic field refers to strengthen particle equally distributed all kinds electromagnetic field in aluminum melt for guaranteeing, electromagnetic field intensity is 0.05～0.20T.
3. preparation method according to claim 1, it is characterized in that: the process of adjusting chemical composition is: if composition measurement result and alloy designations composition require to exist deviation, then add the Al-Mg intermediate alloy according to actual conditions, or pure Mg and Al-Zn intermediate alloy, meet trade mark requirement until alloy composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102437173A CN101417388B (en) | 2008-12-12 | 2008-12-12 | Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102437173A CN101417388B (en) | 2008-12-12 | 2008-12-12 | Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101417388A CN101417388A (en) | 2009-04-29 |
| CN101417388B true CN101417388B (en) | 2011-01-05 |
Family
ID=40628490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102437173A Expired - Fee Related CN101417388B (en) | 2008-12-12 | 2008-12-12 | Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101417388B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103400A (en) * | 2012-12-11 | 2013-05-15 | 芜湖恒坤汽车部件有限公司 | Smelting preparation method for anti-cracking aluminum alloy section bar |
| CN103567704A (en) * | 2013-10-28 | 2014-02-12 | 任静儿 | Manufacturing method for aluminum alloy composite material for cooler used for air conditioner |
| CN103769551B (en) * | 2014-01-17 | 2016-03-30 | 新疆众和股份有限公司 | The production technology of a kind of aluminium silicon magnesium system Birmasil |
| CN104404319A (en) * | 2014-12-09 | 2015-03-11 | 西南铝业（集团）有限责任公司 | 6061 alloy and preparation method |
| CN104372213A (en) * | 2014-12-09 | 2015-02-25 | 西南铝业（集团）有限责任公司 | Composition optimizing and production method of 6061 alloy |
| CN105568187B (en) * | 2016-01-21 | 2017-05-31 | 东北大学 | A kind of process of the electric current solid-solution and aging heat treatment of 6061 aluminium alloy |
| CN106270430B (en) * | 2016-08-25 | 2019-10-18 | 安徽陶铝新材料研究院有限公司 | The semi-continuous casting method of aluminum based composite material enhanced by granules in situ |
| CN107130154A (en) * | 2017-07-07 | 2017-09-05 | 哈尔滨中飞新技术股份有限公司 | A kind of high force feed power transformation power industry connector 6063T6 rods and bars of aluminium alloy preparation methods |
| CN107398484B (en) * | 2017-08-08 | 2018-12-11 | 辽宁忠旺集团有限公司 | A kind of high-performance aluminium alloy extruded bars production technology |
| CN108480925A (en) * | 2018-03-26 | 2018-09-04 | 上海寅翔液压技术有限公司 | A kind of valve block processing technology of aluminum screw-in cartridge valve |
| CN108441659B (en) * | 2018-03-31 | 2020-06-02 | 浙江强广剑精密铸造股份有限公司 | Smelting process of high-strength high-toughness die-casting A356 aluminum alloy |
| CN108559156A (en) * | 2018-04-10 | 2018-09-21 | 苏州耐思特塑胶有限公司 | The preparation method of oil resistant flexible cable material |
| CN108485139A (en) * | 2018-04-10 | 2018-09-04 | 苏州耐思特塑胶有限公司 | The preparation method of the ageing-resistant insulated cable material of high temperature resistant |
| CN109576535A (en) * | 2019-01-02 | 2019-04-05 | 安徽坤和电气有限公司 | A kind of processing method of cable testing bridge |
| CN110284017A (en) * | 2019-07-18 | 2019-09-27 | 河南胜华电缆集团有限公司 | A kind of cable high conductivity and heat heat resistance aluminium alloy conductor and preparation method thereof |
| CN111206166B (en) | 2019-12-10 | 2021-09-10 | 江苏大学 | Preparation method of in-situ ternary nanoparticle reinforced aluminum matrix composite |
| CN111893355A (en) * | 2020-08-11 | 2020-11-06 | 湖北兴和电力新材料股份有限公司 | 6Z63 aluminum alloy tube bus, preparation method and ice melting application |
| CN113802032A (en) * | 2021-08-31 | 2021-12-17 | 南昌大学 | Light high-strength high-conductivity aluminum-based composite material and preparation method thereof |
| CN114990369B (en) * | 2022-07-28 | 2022-11-18 | 鼎镁新材料科技股份有限公司 | Method for preparing aluminum alloy bicycle rim from secondary aluminum |
| CN117282796B (en) * | 2023-08-14 | 2024-08-09 | 福建祥鑫新材料科技有限公司 | Preparation method of aluminum alloy for electronic product and aluminum alloy obtained by using method |
| CN117965965A (en) * | 2023-12-20 | 2024-05-03 | 南南铝业股份有限公司 | Comprehensive technological method for solving coarse-grain ring of 6082 aluminum alloy extrusion bar |
-
2008
- 2008-12-12 CN CN2008102437173A patent/CN101417388B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101417388A (en) | 2009-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101417388B (en) | Preparation method of light high-intensity aluminum base home-position composite material for cable bridge frame | |
| CN104805342B (en) | Aluminum alloy materials and its preparation method and application | |
| CN103725932B (en) | A kind of High-strength silicon, magnesium, manganese-aluminum bar and preparation method thereof | |
| CN102168214B (en) | Preparation method for light high-strength and high-tenacity aluminum-matrix composite material | |
| CN107893170A (en) | A kind of vehicle body in-situ nano reinforced aluminium alloy squeeze wood and preparation method | |
| CN103205614A (en) | Novel 6063 aluminum alloy material and its production technology | |
| CN107164669B (en) | A kind of easy processing recycling 7 is wrought aluminium alloy and preparation method thereof | |
| CN100569976C (en) | Effectively utilize rare earth element y to strengthen the preparation method of Mg-Zn-Y-Zr series magnesium alloy | |
| CN104805319A (en) | Manufacturing method for 2xxx series ultra-large-dimension aluminum alloy round ingot | |
| CN101514409B (en) | A method for preparing in situ MgSi particle reinforced metal matrix composite | |
| CN102021457A (en) | High-toughness aluminum lithium alloy and preparation method thereof | |
| CN101168810A (en) | High-strength high-modulus aluminum-base composite material and preparation method thereof | |
| CN104928542A (en) | Preparation method for 6X82-matrix composites for automobile control arms | |
| CN105296816A (en) | High-conductivity aluminum alloy material and preparing method of aluminum alloy cable conductor of material | |
| CN106148786A (en) | High-strength casting magnesium lithium alloy and preparation method thereof | |
| CN105154725B (en) | High-end Al-Zr intermediate alloy and industrial preparation method | |
| CN108330362A (en) | A kind of the high-strength temperature-resistant casting Al-Cu alloy and preparation process of low porosity | |
| CN100554455C (en) | The preparation of semi-solid alloy slurry and forming method | |
| CN109136685A (en) | A kind of aluminium alloy and its preparation method and application | |
| CN101892406B (en) | Method for preparing aluminum-based composite material with uniform and fine isometric crystal grains | |
| CN1654691A (en) | Method for producing zinc bismuth multicomponent alloy used for hot dip galvanizing of steel and iron members | |
| CN104513921A (en) | A high-strength high-toughness aluminum alloy substrate for section bars and a preparing method thereof | |
| CN102242300B (en) | High-toughness corrosion-resistant magnesium alloy and preparation method thereof | |
| CN108728707A (en) | A kind of crushing failure at high speed high-strength wrought magnesium alloys and preparation method thereof | |
| CN103290244B (en) | A kind of simple and easy method preparing the spherical crystalline substance of wrought aluminium alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20171212 |