CN101924218A - Process for manufacturing lead-acid battery grid - Google Patents
Process for manufacturing lead-acid battery grid Download PDFInfo
- Publication number
- CN101924218A CN101924218A CN2010102756138A CN201010275613A CN101924218A CN 101924218 A CN101924218 A CN 101924218A CN 2010102756138 A CN2010102756138 A CN 2010102756138A CN 201010275613 A CN201010275613 A CN 201010275613A CN 101924218 A CN101924218 A CN 101924218A
- Authority
- CN
- China
- Prior art keywords
- grid
- lead
- alloy
- temperature
- plumbous
- 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.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a process for manufacturing a lead-acid battery grid. The process comprises the following steps: adding electrolytic lead into an alloy preparation furnace until the electrolytic lead is melted and the lead liquid reaches the temperature of between 500 and 520 DEG C for slagging; continuously heating the lead liquid to the temperature of between 650 and 680 DEG C after slagging, and adding calcium aluminum alloy; stirring the liquid to ensure that the temperature of the lead liquid is cooled to the temperature of between 550 and 560 DEG C; adding metal tin ingots to stir for 5 to 8 minutes, placing the alloy liquid into a lead ingot mould to form an alloy lead ingot; adding the alloy lead ingot into a lead furnace to heat until the alloy lead ingot is completely melted, and leading the temperature of the lead furnace to be between 460 and 480 DEG C, the temperature of a lead transportation tube to be between 520 and 540 DEG C, the temperature of a lead spoon to be between 520 and 540 DEG C, the temperature of the upper mouth of the mould to be between 130 and 150 DEG C, the temperature of the lower mouth of the mould to be between 130 and 150 DEG C, the speed of a cast plate to be between 11 and 13 sheets/minute, and starting to cast a grid; storing the grid in an environment at the temperature of between 100 and 120 DEG C for 8 to 12 hours to ensure that the grid is hardened. The manufacture process solves the problems of more pores, air holes, shrinkage, cracking, cutoff and the like in a grid casting process, improves the cast quality, and fundamentally ensures the performance of the battery.
Description
Technical field
The present invention is specifically related to process for manufacturing lead-acid battery grid.
Background technology
Lead acid accumulator plate grid because grid alloy is plumbous antimony and plumbous calcium two big series, roughly flow process be that alloy preparation, mould are heated, release agent spraying, gravity casting, age-hardening.As everyone knows, under the metal melting state, have the character that is full of profile easily, viscosity is more little, and surface tension is more little, and the flowability of metal is good more, can well be full of model during casting.At present, alloy is by each battery manufacturer man oneself preparation, and die device and production technology are not quite similar, and causes the foundry goods grid to form problems such as porous, pore, shrinkage cavity, slight crack, disconnected muscle easily, has a strong impact on the grid quality.
Summary of the invention
The objective of the invention is to: a kind of process for manufacturing lead-acid battery grid is provided, solves problems such as porous in the grid casting process, pore, shrinkage cavity, slight crack, disconnected muscle by this technology, improve casting quality, fundamentally guarantee the performance of battery.
Technical solution of the present invention is that this grid manufacturing process may further comprise the steps:
1, alloy liquid preparation: at first, the electrolytic lead of preparing 80% amount of weight is joined in the alloy preparation stove, be heated to the electrolytic lead fusing and make plumbous liquid temp reach 500 ~ 520 ℃ and carry out the slag hitting processing; Secondly, add calloy after continuing after the slag hitting to be heated to 650 ~ 680 ℃, calcium content 75%, aluminium content 25% in the calloy, calcium content is 0.08 ~ 0.10% in the positive grid, calcium content is 0.12 ~ 0.14% in the negative grid, calculates the calloy addition by calcium content and adds; Then, drop into the electrolytic lead of the 20% remaining amount of preparation weight, stirring makes plumbous liquid temp be cooled to 550 ~ 560 ℃; At last, add the metal tin slab of tin content 99.90%, positive grid tin content is 1.0 ~ 1.2%, and negative grid tin content is 0.2 ~ 0.3%, stirs 5 ~ 8 minutes, and alloy liquid is put into the lead pig mould and formed the alloy lead pig;
2, casting grid: the alloy lead pig is joined in the plumbous stove of casting plate machine, being heated to the alloy lead pig melts fully, and make plumbous furnace temperature reach 460 ~ 480 ℃, defeated lead pipe temperature to reach 520 ~ 540 ℃, a plumbous spoon temperature and reach 520 ~ 540 ℃, mould temperature suitable for reading and reach 130 ~ 150 ℃, mould end opening temperature and reach 130 ~ 150 ℃, cast panel speed and reach 11 ~ 13 slices/minute, begin the grid of casting; During the casting grid, the plumbous liquid of alloy is promoted in the plumbous spoon through defeated lead pipe by plumbous stove, by plumbous spoon the plumbous liquid of alloy quantitatively is added to the die for molding grid again, and the grid after the moulding ejects by the thimble of mould, slide to conveyer belt through slide plate and be sent to the grid cutting knife, receive plate to hanger by linkage at last;
3, the age-hardening of grid: grid is put into 100 ~ 120 ℃ environment deposit 8 ~ 12h and make grid obtain sclerosis.
The present invention has the following advantages: the whole 5MPa that promotes of the grid rib intensity that the alloy liquid that 1. adopts alloy preparation technology to make is cast; Adopt the control of five megadyne temperature degree when 2. grid is cast, temperature transfer has gradient, energy efficient; Alloy is heating for the first time in plumbous stove, after the fusion through defeated lead pipe post bake, be transported to plumbous spoon heat tracing for the third time in plumbous spoon by defeated lead pipe, oblique flow is to fourth, fifth heating in mould up and down of the cast gate of casting die, and five heating help the moulding of grid; 3. grid casting cycle medium velocity is constant, makes alloy in the die cavity of grid mould 2 ~ 3 seconds, and grid has certain degree of hardness, and is not yielding.4. grid carries out age-hardening in 100 ~ 120 ℃ environment, makes grid composition recrystallization, quick-hardening grid, speed production rhythm.
Description of drawings
Fig. 1 is a grid manufacturing process flow diagram of the present invention.
Among the figure: 1 plumbous stove, 2 defeated lead pipes, 3 plumbous spoons, 4 moulds, 5 conveyer belts, 6 cutting knifes, 7 hangers.
Embodiment
Further specify manufacturing process of the present invention below in conjunction with specific embodiment, these embodiment can not be interpreted as it is restriction to technical scheme.
Embodiment 1: make grid according to following concrete steps:
1, alloy liquid preparation: at first, 10 tons of electrolytic leads are joined in the alloy preparation stove, be heated to the electrolytic lead fusing and make plumbous liquid temp reach 500 ℃ and carry out the slag hitting processing; Secondly, add 13.5Kg calloy, calcium content 75%, aluminium content 25% in the calloy after continuing after the slag hitting to be heated to 650 ℃; Then, drop into 2 tons of remaining electrolytic leads, stirring makes plumbous liquid temp be cooled to 550 ℃; At last, add tin content and be 99.90% metal tin slab 125Kg, stirred 8 minutes, alloy liquid is put into the lead pig mould and is formed the alloy lead pig; Tin content is 1.04% in the alloy lead pig at this moment, and calcium content is 0.084%.
2, casting grid: the alloy lead pig is joined in the plumbous stove of casting plate machine, being heated to the alloy lead pig melts fully, and make plumbous furnace temperature reach 460 ℃, defeated lead pipe temperature to reach 520 ℃, a plumbous spoon temperature and reach 520 ℃, mould temperature suitable for reading and reach 130 ℃, mould end opening temperature and reach 130 ℃, cast panel speed and reach 11 slices/minute, begin the grid of casting; During the casting grid, the plumbous liquid of alloy is promoted in the plumbous spoon 3 through defeated lead pipe 2 by plumbous stove 1, by plumbous spoon 3 the plumbous liquid of alloy quantitatively is added to moulding grid in the mould 4 again, grid after the moulding ejects by the thimble of mould 4, slide to conveyer belt 5 through slide plate and be sent to grid cutting knife 6, receive plate to hanger 7 by linkage at last;
3, the age-hardening of grid: grid is put into 100 ℃ environment deposit 12h and make grid obtain sclerosis.
Embodiment 2:Make grid according to following concrete steps:
1, alloy liquid preparation: at first, 10 tons of electrolytic leads are joined in the alloy preparation stove, be heated to the electrolytic lead fusing and make plumbous liquid temp reach 510 ℃ and carry out the slag hitting processing; Secondly, add 14.5Kg calloy, calcium content 75%, aluminium content 25% in the calloy after continuing after the slag hitting to be heated to 665 ℃; Then, drop into 2 tons of remaining electrolytic leads, stirring makes plumbous liquid temp be cooled to 555 ℃; At last, add tin content and be 99.90% metal tin slab 130Kg, stirred 6.5 minutes, alloy liquid is put into the lead pig mould and is formed the alloy lead pig; Tin content is 1.08% in the alloy lead pig at this moment, and calcium content is 0.091%.
2, casting grid: the alloy lead pig is joined in the plumbous stove of casting plate machine, being heated to the alloy lead pig melts fully, and make plumbous furnace temperature reach 470 ℃, defeated lead pipe temperature to reach 530 ℃, a plumbous spoon temperature and reach 530 ℃, mould temperature suitable for reading and reach 140 ℃, mould end opening temperature and reach 140 ℃, cast panel speed and reach 12 slices/minute, begin the grid of casting; During the casting grid, the plumbous liquid of alloy is promoted in the plumbous spoon 3 through defeated lead pipe 2 by plumbous stove 1, by plumbous spoon 3 the plumbous liquid of alloy quantitatively is added to moulding grid in the mould 4 again, grid after the moulding ejects by the thimble of mould 4, slide to conveyer belt 5 through slide plate and be sent to grid cutting knife 6, receive plate to hanger 7 by linkage at last;
3, the age-hardening of grid: grid is put into 110 ℃ environment deposit 10h and make grid obtain sclerosis.
Embodiment 3:Make grid according to following concrete steps:
1, alloy liquid preparation: at first, 10 tons of electrolytic leads are joined in the alloy preparation stove, be heated to the electrolytic lead fusing and make plumbous liquid temp reach 520 ℃ and carry out the slag hitting processing; Secondly, add 15.5Kg calloy, calcium content 75%, aluminium content 25% in the calloy after continuing after the slag hitting to be heated to 680 ℃; Then, drop into 2 tons of remaining electrolytic leads, stirring makes plumbous liquid temp be cooled to 560 ℃; At last, add tin content and be 99.90% metal tin slab 135Kg, stirred 5 minutes, alloy liquid is put into the lead pig mould and is formed the alloy lead pig; Tin content is 1.13% in the alloy lead pig at this moment, and calcium content is 0.097%.
2, casting grid: the alloy lead pig is joined in the plumbous stove of casting plate machine, being heated to the alloy lead pig melts fully, and make plumbous furnace temperature reach 480 ℃, defeated lead pipe temperature to reach 540 ℃, a plumbous spoon temperature and reach 540 ℃, mould temperature suitable for reading and reach 150 ℃, mould end opening temperature and reach 150 ℃, cast panel speed and reach 13 slices/minute, begin the grid of casting; During the casting grid, the plumbous liquid of alloy is promoted in the plumbous spoon 3 through defeated lead pipe 2 by plumbous stove 1, by plumbous spoon 3 the plumbous liquid of alloy quantitatively is added to moulding grid in the mould 4 again, grid after the moulding ejects by the thimble of mould 4, slide to conveyer belt 5 through slide plate and be sent to grid cutting knife 6, receive plate to hanger 7 by linkage at last;
3, the age-hardening of grid: grid is put into 120 ℃ environment deposit 8h and make grid obtain sclerosis.
Claims (1)
1. process for manufacturing lead-acid battery grid is characterized in that this grid manufacturing process may further comprise the steps:
(1) alloy liquid preparation: at first, the electrolytic lead of preparing 80% amount of weight is joined in the alloy preparation stove, be heated to the electrolytic lead fusing and make plumbous liquid temp reach 500 ~ 520 ℃ and carry out the slag hitting processing; Secondly, add calloy after continuing after the slag hitting to be heated to 650 ~ 680 ℃, calcium content 75%, aluminium content 25% in the calloy, calcium content is 0.08 ~ 0.10% in the positive grid, calcium content is 0.12 ~ 0.14% in the negative grid, calculates the calloy addition by calcium content and adds; Then, drop into the electrolytic lead of the 20% remaining amount of preparation weight, stirring makes plumbous liquid temp be cooled to 550 ~ 560 ℃; At last, add the metal tin slab of tin content 99.90%, positive grid tin content is 1.0 ~ 1.2%, and negative grid tin content is 0.2 ~ 0.3%, stirs 5 ~ 8 minutes, and alloy liquid is put into the lead pig mould and formed the alloy lead pig;
(2) casting grid: the alloy lead pig is joined in the plumbous stove of casting plate machine, being heated to the alloy lead pig melts fully, and make plumbous furnace temperature reach 460 ~ 480 ℃, defeated lead pipe temperature to reach 520 ~ 540 ℃, a plumbous spoon temperature and reach 520 ~ 540 ℃, mould temperature suitable for reading and reach 130 ~ 150 ℃, mould end opening temperature and reach 130 ~ 150 ℃, cast panel speed and reach 11 ~ 13 slices/minute, begin the grid of casting; During the casting grid, the plumbous liquid of alloy is promoted in the plumbous spoon through defeated lead pipe by plumbous stove, by plumbous spoon the plumbous liquid of alloy quantitatively is added to the die for molding grid again, and the grid after the moulding ejects by the thimble of mould, slide to conveyer belt through slide plate and be sent to the grid cutting knife, receive plate to hanger by linkage at last;
(3) age-hardening of grid: grid is put into 100 ~ 120 ℃ environment deposit 8 ~ 12h and make grid obtain sclerosis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102756138A CN101924218B (en) | 2010-09-08 | 2010-09-08 | Process for manufacturing lead-acid battery grid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010102756138A CN101924218B (en) | 2010-09-08 | 2010-09-08 | Process for manufacturing lead-acid battery grid |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101924218A true CN101924218A (en) | 2010-12-22 |
CN101924218B CN101924218B (en) | 2012-09-05 |
Family
ID=43338976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010102756138A Active CN101924218B (en) | 2010-09-08 | 2010-09-08 | Process for manufacturing lead-acid battery grid |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101924218B (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102091774A (en) * | 2011-01-21 | 2011-06-15 | 江苏理士电池有限公司 | Lead-acid storage battery plate grid die exhaust method |
CN102747312A (en) * | 2012-07-04 | 2012-10-24 | 江苏理士电池有限公司 | Hardening method for grids of lead acid battery |
CN103956501A (en) * | 2014-04-18 | 2014-07-30 | 天能电池(芜湖)有限公司 | High-temperature age-hardening treatment method of grids |
CN104128590A (en) * | 2014-06-16 | 2014-11-05 | 超威电源有限公司 | Gravity casting method and mold for lead-calcium alloy grids |
CN106011536A (en) * | 2016-06-30 | 2016-10-12 | 济源市万洋绿色能源有限公司 | Hanging lug recycling method |
CN106299381A (en) * | 2016-08-24 | 2017-01-04 | 天能电池集团(安徽)有限公司 | A kind of reduce the method for pore on grid lug |
CN107096907A (en) * | 2017-04-28 | 2017-08-29 | 天能电池(芜湖)有限公司 | Accumulator plate casting audio heating lead supply device |
CN109465427A (en) * | 2018-12-27 | 2019-03-15 | 天能电池(芜湖)有限公司 | A kind of control method promoting casting rate |
CN109518017A (en) * | 2018-10-24 | 2019-03-26 | 山东久力工贸集团有限公司 | A kind of maintenance-free lead accumulator positive plate grid metal and preparation method thereof |
CN109713317A (en) * | 2019-01-04 | 2019-05-03 | 韶关日立化成能源科技有限公司 | Lead acid accumulator plate grid production system and the method for preparing grid using it |
CN110976818A (en) * | 2019-12-23 | 2020-04-10 | 天能电池(芜湖)有限公司 | 12AH cast twelve-piece grid and production process |
CN111916759A (en) * | 2020-07-02 | 2020-11-10 | 界首市南都华宇电源有限公司 | Production equipment and process for lead-acid storage battery grid with good compaction effect |
CN112510213A (en) * | 2020-12-08 | 2021-03-16 | 英德奥克莱电源有限公司 | Preparation method of positive grid |
CN113241445A (en) * | 2021-04-15 | 2021-08-10 | 淄博火炬能源有限责任公司 | Grid alloy for lead-carbon battery and preparation method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1350340A (en) * | 2001-12-11 | 2002-05-22 | 武汉银泰科技股份有限公司 | Lead net type slab lattice making process |
CN1830805A (en) * | 2006-03-22 | 2006-09-13 | 湖南大学 | Method of preparing tribasic lead sulphate utilizing spent lead battery plate grid and connecting piece |
-
2010
- 2010-09-08 CN CN2010102756138A patent/CN101924218B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1350340A (en) * | 2001-12-11 | 2002-05-22 | 武汉银泰科技股份有限公司 | Lead net type slab lattice making process |
CN1830805A (en) * | 2006-03-22 | 2006-09-13 | 湖南大学 | Method of preparing tribasic lead sulphate utilizing spent lead battery plate grid and connecting piece |
Non-Patent Citations (2)
Title |
---|
《上海有色金属》 20091231 张忠民 《对蓄电池用铅钙板栅合金渣的探讨》 35-36 1 , 2 * |
《化工学报》 19871231 赵淑珍等 《铅酸蓄电池铅钙板栅合金的研制及其性能的研究》 380-383 1 , 2 * |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102091774A (en) * | 2011-01-21 | 2011-06-15 | 江苏理士电池有限公司 | Lead-acid storage battery plate grid die exhaust method |
CN102747312A (en) * | 2012-07-04 | 2012-10-24 | 江苏理士电池有限公司 | Hardening method for grids of lead acid battery |
CN103956501A (en) * | 2014-04-18 | 2014-07-30 | 天能电池(芜湖)有限公司 | High-temperature age-hardening treatment method of grids |
CN103956501B (en) * | 2014-04-18 | 2016-08-24 | 天能电池(芜湖)有限公司 | A kind of high temperature grid actual effect hardening process |
CN104128590A (en) * | 2014-06-16 | 2014-11-05 | 超威电源有限公司 | Gravity casting method and mold for lead-calcium alloy grids |
CN106011536B (en) * | 2016-06-30 | 2018-02-23 | 济源市万洋绿色能源有限公司 | A kind of hangers recoverying and utilizing method |
CN106011536A (en) * | 2016-06-30 | 2016-10-12 | 济源市万洋绿色能源有限公司 | Hanging lug recycling method |
CN106299381A (en) * | 2016-08-24 | 2017-01-04 | 天能电池集团(安徽)有限公司 | A kind of reduce the method for pore on grid lug |
CN106299381B (en) * | 2016-08-24 | 2019-03-15 | 天能电池集团(安徽)有限公司 | A method of reducing stomata on grid tab |
CN107096907A (en) * | 2017-04-28 | 2017-08-29 | 天能电池(芜湖)有限公司 | Accumulator plate casting audio heating lead supply device |
CN109518017A (en) * | 2018-10-24 | 2019-03-26 | 山东久力工贸集团有限公司 | A kind of maintenance-free lead accumulator positive plate grid metal and preparation method thereof |
CN109465427A (en) * | 2018-12-27 | 2019-03-15 | 天能电池(芜湖)有限公司 | A kind of control method promoting casting rate |
CN109713317A (en) * | 2019-01-04 | 2019-05-03 | 韶关日立化成能源科技有限公司 | Lead acid accumulator plate grid production system and the method for preparing grid using it |
CN109713317B (en) * | 2019-01-04 | 2024-05-28 | 希世比能源科技(韶关)有限公司 | Lead-acid storage battery grid production system and method for preparing grid by using same |
CN110976818A (en) * | 2019-12-23 | 2020-04-10 | 天能电池(芜湖)有限公司 | 12AH cast twelve-piece grid and production process |
CN111916759A (en) * | 2020-07-02 | 2020-11-10 | 界首市南都华宇电源有限公司 | Production equipment and process for lead-acid storage battery grid with good compaction effect |
CN112510213A (en) * | 2020-12-08 | 2021-03-16 | 英德奥克莱电源有限公司 | Preparation method of positive grid |
CN113241445A (en) * | 2021-04-15 | 2021-08-10 | 淄博火炬能源有限责任公司 | Grid alloy for lead-carbon battery and preparation method thereof |
CN113241445B (en) * | 2021-04-15 | 2022-09-20 | 淄博火炬能源有限责任公司 | Grid alloy for lead-carbon battery and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN101924218B (en) | 2012-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101924218B (en) | Process for manufacturing lead-acid battery grid | |
CN102363211B (en) | A kind of extrusion casting method of aluminium alloy automobile gear box casing | |
CN105312532B (en) | Casting process for producing automobile steering gear shell | |
CN102601338B (en) | Method for producing large magnesium alloy ring by means of centrifugal casting | |
CN102921885B (en) | Sand casting technology for titanium, zirconium and nickel and alloy casting thereof | |
CN106636797A (en) | Squeeze casting preparation method for magnalium automobile engine support | |
CN104745917A (en) | Casting process for crankshaft | |
CN104451297A (en) | Casting technology of aluminum bronze series aluminum alloy circular ingots | |
CN102581249A (en) | Centrifugal casting method of aluminum alloy impeller | |
CN104028722A (en) | Zinc alloy casting technology | |
CN107130137B (en) | A kind of low-pressure casting process of environmental protection silizin tap | |
CN107321926B (en) | Casting system for injection molding machine type template casting and casting method using same | |
CN103600021B (en) | Manufacturing technology for natural aerodynamic cylinder | |
CN205200474U (en) | Silver ingot automatic mold device | |
CN103397232A (en) | Aluminum alloy for mold and preparation method thereof | |
CN104014741A (en) | Tilting pouring method for aluminum-silicon alloy casting for high-voltage switch and as well as special sand mold | |
CN101602103A (en) | The casting method of zinc base alloy for stamping die basal body | |
CN108941485A (en) | A kind of casting mold and method of large size alloy steel ingot | |
CN103691892A (en) | Manufacturing method of high-temperature high-pressure drain valve | |
CN210686908U (en) | Transmission case body | |
CN103397221A (en) | Copper alloy for drawing mould and preparation method thereof | |
CN103966611B (en) | A kind of magnesium alloy anode bar processing method | |
CN108465777B (en) | Technology for casting AB column by tilting gravity sand core for new-energy all-aluminum vehicle body | |
CN102268589B (en) | Wheel hub of wind turbine generator system (WTGS) | |
CN104084541A (en) | Method for manufacturing casting by virtue of suspension casting |
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 |