CN102443725B - High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy - Google Patents
High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy Download PDFInfo
- Publication number
- CN102443725B CN102443725B CN 201110421187 CN201110421187A CN102443725B CN 102443725 B CN102443725 B CN 102443725B CN 201110421187 CN201110421187 CN 201110421187 CN 201110421187 A CN201110421187 A CN 201110421187A CN 102443725 B CN102443725 B CN 102443725B
- Authority
- CN
- China
- Prior art keywords
- equal
- less
- alloy
- alloy melt
- aluminum alloy
- 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 And Refinement Of Metals (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a high-strength aluminum alloy treated by AlH3 and a preparation method of the high-strength aluminum alloy. The preparation method comprises the following steps of: heating a hot aluminum ingot or molten aluminum liquid to be completely melted; adding Si, Fe, Cu, Mn, Mg, Zn and Ti to be completely dissolved and melted; refining and keeping the temperature of 700-1000DEG Cto obtain an alloy melt; carrying out deaerating purification on the alloy melt by using nitrogen gas or inert gas or mixed gas formed by the nitrogen gas and the inert gas in any ratio and continuously introducing gas until the reaction is ended; meanwhile, adding AlH3 powder into the alloy melt along with the gas in a fluidizaton mode; stirring the mixture to enable the AlH3 to be uniformly distributed on the alloy melt and sufficiently reacted with the alloy melt; standing and adjusting the temperature to be 680-730DEG C; and discharging the alloy liquid from a furnace for casting production. According to the high-strength aluminum alloy and the preparation method thereof disclosed by the invention, the defects of performances of a traditional aluminum alloy can be overcome; the strongtenacity, the formability and the hardenability of the aluminum alloy are improved; and a high-end substrate for high-efficiency deep processing is provided.
Description
Technical field
The present invention relates to a kind of aldural, also relate to its preparation method.
Background technology
The aluminium alloy melt that adds " cold aluminium " is easier to cast out high-quality foundry goods and ingot blank, be because more than the pressure of using as returns, " the cold aluminium " of the various forms such as crop and scrap stock have thinner crystalline-granular texture, in melt, can keep at short notice this high-quality substructure, thus the crystallization behavior when impact is cast.But " cold aluminium " also contains the impurity such as more oxide compound, iron, silicon simultaneously, and the sublimate of alloy is unfavorable.
The aluminium alloy that deep processing is used often needs at first to be cast as large-scale ingot blank, such as slab ingot, pole etc., again by means such as rolling, extruding, forgings, be processed into various finished products, these processes basically all will with the heat treatment phase combination, if to the finished product that can directly use, then also will be through operations such as over-segmentation, surface working, Passivation Treatment.These processing means need aluminum alloy materials itself to possess good deep processing performance, comprise castability, press working deformation performance, heat treatment reinforcement performance, corrosion resistance, antifatigue destructive characteristics, surface working and coating property etc.Wherein, founding performance is the basis of aluminium alloy deep processing performance.Large-scale ingot blank, especially the above above pole of slab ingot, slab and diameter 500mm of thickness 500mm, can be the representative base material of Large Efficient deep processing, and be prefabricated into large-scale ingot blank, also be the first technology critical point whether test aluminum alloy materials itself is fit to carry out deep processing.
According to statistics, in the world in the 500 various deformation aluminum alloy materials, the aluminium alloy that is usually used in the large-scale ingot blank of founding is less than 20, the aluminium alloy that wherein is most commonly used to the large-scale ingot blank of founding and produces slab has 5083,5026,6082,2017,2024,2219,7075,7050 etc., in these materials, what belong to duralumin and ultralumin category is 2XXX system and 7XXX system, and its slab is multiplex in aerospace industry, but the poor performance of the large-scale ingot blank of its founding, slab ingot and pole shaping rate are very low; 5XXX system, 6XXX are associated golden founding better performances, but intensity is low; Other then belongs to soft aluminium category such as 1XXX system, 3XXX line aluminium alloy.
The forming property of present aluminum alloy materials during except the large-scale ingot blank of founding is relatively poor, large-scale ingot blank is not high in the hardening capacity of heat treatment process, tempering resistance is relatively poor and can not satisfy higher mechanical property requirements or some property (as heat-resisting, anti-corrosion) etc., is significant deficiency yet.These defectives make it form the technology breakpoint that is difficult to cross in the process of the strong materials of weight such as field of engineering technology instead of steel goods and structure.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of aldural, can overcome the deficiency of existing aluminium alloy capability, improve its obdurability, plasticity and hardening capacity, for efficient deep processing provides high-end base material.
The technical solution adopted for the present invention to solve the technical problems is: a kind of aldural, by percentage to the quality, comprise 0.2～0.6% Si, Fe less than or equal to 0.35%, Cu less than or equal to 0.1%, Mn less than or equal to 0.1%, Cr less than or equal to 0.1%, 0.45～0.9% Mg, Zn less than or equal to 0.1%, the Ti less than or equal to 0.1%, surplus is Al and inevitable impurity, the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of described aldural, adds AlH in the Combined Processing mode
3, may further comprise the steps:
Step 1: the component according to described aldural is got the raw materials ready, comprise the Si that accounts for total product mass percent 0.2～0.6%, Fe less than or equal to 0.35%, Cu less than or equal to 0.1%, Mn less than or equal to 0.1%, the Cr less than or equal to 0.1%, 0.45～0.9% Mg, Zn less than or equal to 0.1%, the Ti less than or equal to 0.1%;
Step 2: add aluminium ingot or molten aluminum liquid first in smelting furnace, heating makes it to melt fully, adds first getting the raw materials ready of step 1 by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of lower insulations, obtains alloy melt after the refining; Melting process is finished in enclosed environment;
Step 3: use the mixed gas alloy melt of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion to carry out the degassing and purifying operation, and continue ventilation until react complete; To account for simultaneously the AlH of total product mass percent 1～1.67%
3Powder joins in the alloy melt with above-mentioned gas in the fluidization mode; Stir, make AlH
3In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, aluminium alloy is come out of the stove, and carries out respectively the Foundry Production of different goods along following two kinds of flow processs.
Flow process one: topple over along chute and to come out of the stove, to vertical water cooling casting machine system, the large-scale slab ingot that casting processing ingot blank, particularly cast thickness 500mm are above and the pole more than the diameter 500mm.
Flow process two: metaideophone enters in the mold of foundry goods, uses metal mold, sand mold or mixed type casting mode, adopts gravitational casting, pressure die casting or counter-pressure casting technique, the aluminum alloy casting of Casting Aluminum Alloy Based, particularly casting large-scale, thin-walled or complex construction.
The invention has the beneficial effects as follows: in molten aluminium, caused multiple grain refining element, particle, thickization that prevents matrix and strengthening phase had good result.
The present invention adds 1～1.67% AlH in wrought aluminium alloy
3Powder can effectively increase heterogeneous forming core core in alloy graining process, thereby reaches the effect of grain refining, strengthens alloy strength; And the element that adds can promote to form interstitial atom and gap mutually, during high temperature in α (Al) sosoloid solubleness large, and very little when room temperature, thereby make alloy have higher heat-treatability matter, after the thermal treatment, its intensity and hardness all have significant improvement.
The present invention is further described below in conjunction with embodiment.
Embodiment
Embodiment 1:
A kind of aldural by percentage to the quality, comprises 0.2% Si, 0.35% Fe, 0.1% Cu, 0.1% Mn, 0.1% Cr, 0.45% Mg, 0.1% Zn, 0.1% Ti, surplus is Al and inevitable impurity, the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of described aldural, adds AlH in the Combined Processing mode
3, may further comprise the steps:
Step 1: the component according to described aldural is got the raw materials ready, comprise the Si that accounts for total product mass percent 0.2～0.6%, Fe less than or equal to 0.35%, Cu less than or equal to 0.1%, Mn less than or equal to 0.1%, the Cr less than or equal to 0.1%, 0.45～0.9% Mg, Zn less than or equal to 0.1%, the Ti less than or equal to 0.1%;
Step 2: add aluminium ingot or molten aluminum liquid first in smelting furnace, heating makes it to melt fully, adds first getting the raw materials ready of step 1 by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of lower insulations, obtains alloy melt after the refining; Melting process is finished in enclosed environment;
Step 3: use the mixed gas alloy melt of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion to carry out the degassing and purifying operation, and continue ventilation until react complete; To account for simultaneously the AlH of total product mass percent 1%
3Powder joins in the alloy melt with above-mentioned gas in the fluidization mode; Stir, make AlH
3In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, aluminium alloy is come out of the stove, and carries out respectively the Foundry Production of different goods along following two kinds of flow processs.
Flow process one: topple over along chute and to come out of the stove, to vertical water cooling casting machine system, the large-scale slab ingot that casting processing ingot blank, particularly cast thickness 500mm are above and the pole more than the diameter 500mm.
Flow process two: metaideophone enters in the mold of foundry goods, uses metal mold, sand mold or mixed type casting mode, adopts gravitational casting, pressure die casting or counter-pressure casting technique, the aluminum alloy casting of Casting Aluminum Alloy Based, particularly casting large-scale, thin-walled or complex construction.
Embodiment 2:
A kind of aldural by percentage to the quality, comprises 0.4% Si, 0.3% Fe, 0.08% Cu, 0.08% Mn, 0.06% Cr, 0.7% Mg, 0.07% Zn, 0.05% Ti, surplus is Al and inevitable impurity, the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of described aldural, adds AlH in the Combined Processing mode
3, may further comprise the steps:
Step 1: the component according to described aldural is got the raw materials ready, and comprises the Si that accounts for total product mass percent 0.4%, 0.3% Fe, 0.08% Cu, 0.08% Mn, 0.06% Cr, 0.7% Mg, 0.07% Zn, 0.05% Ti;
Step 2: add aluminium ingot or molten aluminum liquid first in smelting furnace, heating makes it to melt fully, adds first getting the raw materials ready of step 1 by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of lower insulations, obtains alloy melt after the refining; Melting process is finished in enclosed environment;
Step 3: use the mixed gas alloy melt of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion to carry out the degassing and purifying operation, and continue ventilation until react complete; To account for simultaneously the AlH of total product mass percent 1.34%
3Powder joins in the alloy melt with above-mentioned gas in the fluidization mode; Stir, make AlH
3In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, aluminium alloy is come out of the stove, and carries out respectively the Foundry Production of different goods along following two kinds of flow processs.
Flow process one: topple over along chute and to come out of the stove, to vertical water cooling casting machine system, the large-scale slab ingot that casting processing ingot blank, particularly cast thickness 500mm are above and the pole more than the diameter 500mm.
Flow process two: metaideophone enters in the mold of foundry goods, uses metal mold, sand mold or mixed type casting mode, adopts gravitational casting, pressure die casting or counter-pressure casting technique, the aluminum alloy casting of Casting Aluminum Alloy Based, particularly casting large-scale, thin-walled or complex construction.
Embodiment 3:
A kind of aldural by percentage to the quality, comprises 0.6% Si, 0.25% Fe, 0.06% Cu, 0.09% Mn, 0.03% Cr, 0.9% Mg, 0.09% Zn, 0.05% Ti, surplus is Al and inevitable impurity, the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent.
The present invention also provides the preparation method of described aldural, adds AlH in the Combined Processing mode
3, may further comprise the steps:
Step 1: the component according to described aldural is got the raw materials ready, and comprises the Si that accounts for total product mass percent 0.6%, 0.25% Fe, 0.06% Cu, 0.09% Mn, 0.03% Cr, 0.9% Mg, 0.09% Zn, 0.05% Ti;
Step 2: add aluminium ingot or molten aluminum liquid first in smelting furnace, heating makes it to melt fully, adds first getting the raw materials ready of step 1 by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of lower insulations, obtains alloy melt after the refining; Melting process is finished in enclosed environment;
Step 3: use the mixed gas alloy melt of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion to carry out the degassing and purifying operation, and continue ventilation until react complete; To account for simultaneously the AlH of total product mass percent 1.67%
3Powder joins in the alloy melt with above-mentioned gas in the fluidization mode; Stir, make AlH
3In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, aluminium alloy is come out of the stove, and carries out respectively the Foundry Production of different goods along following two kinds of flow processs.
Flow process one: topple over along chute and to come out of the stove, to vertical water cooling casting machine system, the large-scale slab ingot that casting processing ingot blank, particularly cast thickness 500mm are above and the pole more than the diameter 500mm.
Flow process two: metaideophone enters in the mold of foundry goods, uses metal mold, sand mold or mixed type casting mode, adopts gravitational casting, pressure die casting or counter-pressure casting technique, the aluminum alloy casting of Casting Aluminum Alloy Based, particularly casting large-scale, thin-walled or complex construction.
Claims (1)
1. use AlH for one kind
3The aldural of processing is characterized in that: by percentage to the quality, comprise 0.2～0.6% Si, Fe less than or equal to 0.35%, Cu less than or equal to 0.1%, the Mn less than or equal to 0.1%, the Cr less than or equal to 0.1%, 0.45～0.9% Mg, Zn less than or equal to 0.1%, the Ti less than or equal to 0.1%, surplus is Al and inevitable impurity, the content of every kind of impurity is no more than 0.05% of total mass per-cent, and the content of all impurity is no more than 0.15% of total mass per-cent;
The described AlH that uses
3The preparation method of the aldural of processing comprises the steps:
Step 1: the component according to described aldural is got the raw materials ready, comprise the Si that accounts for total product mass percent 0.2～0.6%, Fe less than or equal to 0.35%, Cu less than or equal to 0.1%, Mn less than or equal to 0.1%, the Cr less than or equal to 0.1%, 0.45～0.9% Mg, Zn less than or equal to 0.1%, the Ti less than or equal to 0.1%;
Step 2: add aluminium ingot or molten aluminum liquid first in smelting furnace, heating makes it to melt fully, adds first getting the raw materials ready of step 1 by formula rate, makes it to dissolve fully and melt, and 700～1000 ℃ of lower insulations, obtains alloy melt after the refining; Melting process is finished in enclosed environment;
Step 3: use the mixed gas alloy melt of nitrogen or rare gas element or nitrogen and rare gas element arbitrary proportion to carry out the degassing and purifying operation, and continue ventilation until react complete; To account for simultaneously the AlH of total product mass percent 1～1.67%
3Powder joins in the alloy melt with above-mentioned gas in the fluidization mode; Stir, make AlH
3In alloy melt, be evenly distributed, and fully react with alloy melt; Leave standstill, temperature adjustment to 680～730 ℃, aluminium alloy is come out of the stove, and carries out Foundry Production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110421187 CN102443725B (en) | 2011-12-15 | 2011-12-15 | High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110421187 CN102443725B (en) | 2011-12-15 | 2011-12-15 | High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102443725A CN102443725A (en) | 2012-05-09 |
| CN102443725B true CN102443725B (en) | 2013-10-23 |
Family
ID=46006665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110421187 Expired - Fee Related CN102443725B (en) | 2011-12-15 | 2011-12-15 | High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102443725B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3938554B1 (en) * | 2019-03-13 | 2023-09-06 | Novelis, Inc. | Age-hardenable and highly formable aluminum alloys, monolithic sheet made therof and clad aluminum alloy product comprising it |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719715A (en) * | 2012-07-11 | 2012-10-10 | 吴江市新申铝业科技发展有限公司 | Aluminum alloy and method for manufacturing solar frame aluminum profile |
| CN103643070B (en) * | 2013-12-20 | 2015-11-25 | 西南铝业（集团）有限责任公司 | A kind of vehicle body of railway vehicle purification process technique in aluminium alloy smelting furnace |
| CN105648289B (en) * | 2016-03-30 | 2018-04-06 | 江苏公爵新能源汽车有限公司 | A kind of high-strength aluminum alloy material |
| CN105671382A (en) * | 2016-03-30 | 2016-06-15 | 江苏公爵新能源汽车有限公司 | High-hardness aluminum alloy material |
| CN105671383B (en) * | 2016-03-30 | 2017-12-05 | 南通龙硕轻合金科技有限公司 | A kind of aluminum alloy materials for being easy to heat-tinting |
| CN105821264A (en) * | 2016-03-30 | 2016-08-03 | 南通龙硕轻合金科技有限公司 | High-ductility aluminum alloy material |
| CN113493877A (en) * | 2020-03-18 | 2021-10-12 | 郭涛 | Aluminum alloy for producing wind power tower cylinder ladder stand stepping stick |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0577436A1 (en) * | 1992-07-02 | 1994-01-05 | Sumitomo Electric Industries, Limited | Nitrogen-combined aluminum sintered alloys and method of producing the same |
| CN1555423A (en) * | 2001-07-25 | 2004-12-15 | �Ѻ͵繤��ʽ���� | Aluminum alloy excellent in machinability, and aluminum alloy material and method for production thereof |
-
2011
- 2011-12-15 CN CN 201110421187 patent/CN102443725B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0577436A1 (en) * | 1992-07-02 | 1994-01-05 | Sumitomo Electric Industries, Limited | Nitrogen-combined aluminum sintered alloys and method of producing the same |
| CN1555423A (en) * | 2001-07-25 | 2004-12-15 | �Ѻ͵繤��ʽ���� | Aluminum alloy excellent in machinability, and aluminum alloy material and method for production thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3938554B1 (en) * | 2019-03-13 | 2023-09-06 | Novelis, Inc. | Age-hardenable and highly formable aluminum alloys, monolithic sheet made therof and clad aluminum alloy product comprising it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102443725A (en) | 2012-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102443725B (en) | High-strength aluminum alloy treated by AlH3 and preparation method of high-strength aluminum alloy | |
| CN101914710B (en) | Manufacture method of aluminum alloy sheet for high-speed train structure | |
| CN102424924B (en) | WN2 and LiBH4 powder added high-strength aluminum alloy and preparation method thereof | |
| CN101538667B (en) | High-strength and wear-resistant cocrystallized Al-Si alloy forging stock material and preparation method thereof | |
| CN102433475B (en) | High-strength and high-hardness aluminum alloy and preparation method thereof | |
| CN103131921B (en) | Aldural of a kind of carbonization nickel process and preparation method thereof | |
| CN1291053C (en) | High strength casted aluminium silicon series alloy and its preparation method | |
| CN102418007B (en) | High-temperature aluminum alloy treated by WB and LiH powder and preparation method of aluminum alloy | |
| CN102433472B (en) | High strength aluminium alloy and smelting and casting methods thereof | |
| CN102418009B (en) | Aluminum alloy capable of digesting high-hardness compounds and smelting method of aluminum alloy | |
| CN102534310B (en) | High-strength aluminum alloy doped with Mo2C and MgH2 and preparation method thereof | |
| CN102660693B (en) | Aluminum alloy treated by using TiN powder and BeH2 powder, and preparation method thereof | |
| WO2012027989A1 (en) | Application of aluminium-zirconium-carbon master alloy in deforming process of magnesium or magnesium alloy | |
| CN102418008B (en) | High-strength aluminum alloy obtained by removing inclusion through HfC and preparation method of aluminum alloy | |
| CN102517476B (en) | High strength aluminum alloy capable of reducing porosity and dispersed shrinkage and preparation method thereof | |
| CN102418011B (en) | High-strength aluminum alloy added with AlCrN and RbH and preparation method of aluminum alloy | |
| CN102433471A (en) | High-toughness aluminum alloy and preparation method thereof | |
| CN102433469B (en) | Smelting method of aluminium alloy co-dissolved with VC | |
| CN102505084B (en) | High-strength aluminum alloy added with TaC and preparation method for high-strength aluminum alloy | |
| CN102424925B (en) | Co2N-doped aluminium alloy and smelting method thereof | |
| CN102418016B (en) | 6082 aluminum alloy melted with CuH and preparation method of aluminum alloy | |
| CN102433470B (en) | Aluminium alloy co-dissolved with TiAlN and CaH3 powder and smelting method | |
| CN103131916B (en) | High-strength aluminum alloy processed by sodium fluoroaluminate and preparing method of sodium fluoroaluminate | |
| CN102433474B (en) | NaH-doped high strength aluminium alloy and smelting method thereof | |
| WO2012113242A1 (en) | Low-zinc hot dip aluminum alloy coating material containing be and combination of agents, and preparation method thereof |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: GUIZHOU ALUMINUM MATERIALS ENGINEERING TECHNOLOGY Free format text: FORMER OWNER: GUIZHOU HUAKE ALUMINIUM MATERIAL ENGINEERING TECHNOLOGY RESEARCH CO., LTD. Effective date: 20141031 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 550014 GUIYANG, GUIZHOU PROVINCE TO: 550018 GUIYANG, GUIZHOU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141031 Address after: 550018 Guizhou national hi tech Zone, Jinyang science and Technology Industrial Park, standard workshop, auxiliary room, B665 room Patentee after: Guizhou Aluminum Materials Engineering Technology Research Center Co., Ltd. Address before: 550014, Guizhou, Guiyang province Baiyun District aluminum alloy factory Road South Hospital Patentee before: Guizhou Huake Aluminium Material Engineering Technology Research Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |