CN101817075A - Magnesium and magnesium-alloy quantitative casting furnace - Google Patents
Magnesium and magnesium-alloy quantitative casting furnace Download PDFInfo
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- CN101817075A CN101817075A CN 201010179912 CN201010179912A CN101817075A CN 101817075 A CN101817075 A CN 101817075A CN 201010179912 CN201010179912 CN 201010179912 CN 201010179912 A CN201010179912 A CN 201010179912A CN 101817075 A CN101817075 A CN 101817075A
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Abstract
The invention discloses a magnesium and magnesium-alloy quantitative casting furnace which comprises a large-capacity crucible that is externally provided with a first electrical heating component; the large-capacity crucible is communicated with a quantitative furnace which is externally provided with a third electrical heating component by a discharge pipe that is externally provided with a second electrical heating component; the large-capacity crucible is provided with a metal cover plate which is assembled in a sealing way, and the metal cover plate passes through a one-way air inlet control device; and a sealing furnace cover of the metal cover plate is provided with an air outlet control pressure release valve. The magnesium and magnesium-alloy quantitative casting furnace and a horizontal cold chamber die casting machine are arranged in a horizontal way, and quantitative casting of molten metal can be completed by filling inert gas by utilizing air pressure principle. A bigger and a smaller furnace bodies play the different roles, and the bigger furnace body is used for heating and insulating molten metal and maintaining the gas pressure, is sealed in the whole process, is not contacted with the outside, and ensures the metal quality; and meanwhile, the arranged pressure release valve has the functions of convenient cleaning and convenient feeding. The smaller furnace body is used for storing unit molten metal needed to be treated by quantitative casting, and can accurately heat the molten metal to the best temperature due to the small volume, thus ensuring the quality of castings.
Description
Technical field
The present invention relates to the casting of metals technical field, relate in particular to a kind of magnesium and magnesium-alloy quantitative casting furnace, be particularly suitable for the material work of watering automatically of the horizontal cold-chamber die casting machine of casting factory.
Background technology
Magnesium and magnesium-alloy quantitative casting furnace are as the corollary equipment of horizontal cold-chamber die casting machine, and the technical performance index that possess simultaneously is simple to operate, quick and safe, firm and durable, reduction expense.Mostly existing magnesium and magnesium alloy quantification founding apparatus are with variable-frequency motor wheel rotor formula pump molten metal to be pumped; Or use for reference the dig a well method of the formula of fetching water of ancients, and with hopper molten metal is lifted and put in place, be poured in the hopper then.
As application number is that 2006201005212 utility model patent has disclosed a kind of magnesium alloy liquid die casting accurate quantification control device; It is characterized in that detection feedback system reaches the pc machine with variable signal, the pc machine is electrically connected through electric machine controller, and in real time according to the buncher that is controlled to of pc machine, by the revision quantitative values automatically of casting, reaches accurate purpose.Though this device adopts the pc machine to utilize acquisition of signal control molten metal flow as can be seen, the method do not solve constant displacement pump very easily produce stop up and variable-frequency motor through the high temperature problem of damage easily of daring not accept.
As application number is that 200710062194 patent of invention has disclosed a kind of magnesium alloy quantification founding apparatus, it comprises that one one end is arranged on pony ladle passage in the body of heater, is arranged on the portal frame in the pony ladle passage can be driven the pony ladle that moves up and down and is arranged on pony ladle passage upper end by transmission device in the pony ladle passage discharging opening, transmission device drives pony ladle by portal frame and rises, the pony ladle upset, magnesium liquid is just poured out by discharging opening.Though this device has utilized the wisdom that ancients dig a well and fetch water as can be seen, be used on the quantitative casting that some is not proper.Because the capacity of pony ladle be fix, the pony ladle passage seals again, also will open the replacing pony ladle to sealing device if decide the words of variable again, liquation is exposed to oxidation in the air, and this be that task difficulty is very big under the high temperature solution environment around.
Said apparatus does not also possess the ability that quantitative magnesium melt is heated separately, just the magnesium melt that heats is cast out by variety of way, and this single form is not proper, waters the metal quality instability that casts out.
And for example now the metal quantitative casting furnace produced of enterprise all is that elevating mechanism with stent-type raises body of heater and reaches the purpose of smooth casting, that will make operating personnel more increase one's load in operation, maintenance, reinforced, scarfing cinder process, and potential safety hazard is also corresponding increases.
Summary of the invention
Technical problem to be solved by this invention provides a kind of simple in structure, and is with low cost, operates easy and convenient magnesium and magnesium-alloy quantitative casting furnace.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
Magnesium and magnesium-alloy quantitative casting furnace, comprise the outer big capacity crucible that is provided with first electric heating assembly, the technical measures of taking comprise: big capacity crucible through outside be provided with second electric heating assembly discharge nozzle be provided with the quantitative stove of the 3rd electric heating assembly outside being communicated with, big capacity crucible is provided with the equipped metal cover board of sealing, this metal cover board is penetrated with unidirectional Intaker controller, and the salable bell of this metal cover board is provided with the relief valve of the control of giving vent to anger.
The technical measures of being taked also comprise: above-mentioned unidirectional Intaker controller includes the air inlet pipe of at least one air inlet, and this air inlet pipe is communicated with inlet duct and the inert gas air inlet source of being controlled by the air inlet controller through check valve; Air inlet is arranged in the pressure chamber that big capacity crucible top constitutes.
The discharging suction inlet of above-mentioned discharge nozzle stretches in first melt chamber of big capacity crucible bottom formation; The discharging mouth of pipe of discharge nozzle stretches in second melt chamber of quantitative stove top formation.
The first above-mentioned electric heating assembly includes first electric heating part that is used to wrap up big capacity crucible, and first electric heating part is outer to be provided with first shell through first heat-insulation layer.
The second above-mentioned electric heating assembly includes second electric heating part that is used to wrap up discharge nozzle, and second electric heating part is provided with second heat-insulation layer outward.
The 3rd above-mentioned electric heating assembly comprises the 3rd electric heating part, wraps up quantitative stove through the insulation inner chamber in the 3rd electric heating part; The 3rd electric heating part is outer to be provided with second shell through the 3rd heat-insulation layer, and quantitatively stove is provided with bell.Bell is penetrated with the protection gas air inlet that is used to protect magnesium melt.
Above-mentioned quantitative furnace bottom is provided with the running channel that runs through insulation inner chamber and the 3rd heat-insulation layer, is positioned at this running channel bottom and is provided with die casting machine material cup.
Above-mentioned running channel top is equipped with the valve body that can freely open and close with quantitative stove junction, and valve body runs through quantitative stove, is incubated inner chamber, the 3rd heat-insulation layer, second shell link to each other with quantitative stove control valve.
At least four fixing feet are installed in the bottom of the first above-mentioned shell, and this fixing feet is placed on the horizontal plane.
Compared with prior art, among the present invention big capacity crucible through outside be provided with second electric heating assembly discharge nozzle be provided with the quantitative stove of the 3rd electric heating assembly outside being communicated with, big capacity crucible is provided with the equipped metal cover board of sealing, this metal cover board is penetrated with unidirectional Intaker controller, and the Sealing furnace of this metal cover board covers the relief valve that is provided with the control of giving vent to anger.Its operation principle is very simple, quantitative model is very clear, be equal in weight or do not wait at every turn by regulating molten metal that air inflow can accomplish that each quantitative casting goes out, design makes things convenient for the die casting operator that the quality and the die casting stub bar of die-cast product are controlled like this, promptly reduce the big workload that the operator manually waters material and saved molten metal again, improved productivity ratio.
Quantitatively stove and big capacity crucible can be heated to different temperatures, this is that other quantification founding apparatus is not accomplished, such as the liquation in the big capacity crucible is heated to the die cast metal minimum temperature, molten metal in the quantitative stove is heated to the die cast metal optimum temperature, and the heating component of making big smelting furnace like this will improve the life-span and save the energy.Simultaneously quantitative stove melt temperature the best, the good product quality that casts out, percent defective is low.
This device is the totally enclosed type operation in addition, and the very little heat insulation effect of heat energy loss of generation is splendid, reduces heat radiation to external world again.The indifferent gas derived components is a dry argon gas, especially is fit to quantitative casting magnesium and alloy thereof, prevents magnesium metal and the extraneous oxidation that contacts generation.Quantitatively stove protection pneumatolytic partial volume mark is for being 99.6% dry air and 0.04% sulfur hexafluoride, and limit adding protection gas gas to belong to because of quantitative stove is quantitative micro-, so very little to ambient influnence.
The present invention can quantitative casting magnesium and alloy outside because the fusing point of aluminium and magnesium only differs 12 degree, and aluminium not can with the air reaction oxidation, the air inlet source be dry air just can, so can be used for quantitative casting aluminium and alloy thereof equally.It is undoubted that a kind of body of heater can be fit to its versatility of casting of multiple metal, promptly saves the cost simple operation easily of principle again, the approval rate height.As widely popularize, the social value prospect is considerable.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of the embodiment of the invention;
Fig. 2 is the sectional structure schematic diagram of big capacity crucible among Fig. 1;
Fig. 3 is air inlet among Fig. 1, discharging, sealing device sectional structure schematic diagram;
Fig. 4 is the sectional structure schematic diagram of quantitative stove among Fig. 1.
The specific embodiment
Below in conjunction with the accompanying drawing specific embodiment the present invention is described in further detail.
Fig. 1 to Fig. 4 is a structural representation of the present invention, figure grade explanation: fixing feet 1, the first shell 2; first heat-insulation layer, 3, the first heating members 4, big capacity crucible 5; first melt chamber 6, pressure chamber 7, metal cover board 8; sealing bell 9, relief valve 10, screw rod 11; air inlet 12, air inlet controller 13, inlet duct 14; inertia source of the gas 14a, check valve 15, air inlet pipe 16; second heat-insulation layer, 17, the second heating members 18, discharge nozzle 19; discharging suction inlet 20a, discharging mouth of pipe 20b, valve body 21; quantitatively stove control valve 22 is protected gas air inlet 23, bell 24; second melt chamber 25, quantitatively stove 26, the three heating members 27; the 3rd heat-insulation layer 28, the second shells 29, insulation inner chamber 30; running channel 31, die casting machine material cup 32, horizontal plane 33.
As shown in Figures 1 to 4: this magnesium and magnesium-alloy quantitative casting furnace, comprise the outer big capacity crucible 5 that is provided with first electric heating assembly, big capacity crucible 5 wherein through outside be provided with second electric heating assembly discharge nozzle 19 be provided with the quantitative stove 26 of the 3rd electric heating assembly outside being communicated with, described big capacity crucible 5 is provided with the equipped metal cover board 8 of sealing, this metal cover board 8 is penetrated with unidirectional Intaker controller and discharge nozzle 19, and the salable bell 9 of this metal cover board 8 is provided with the relief valve 10 of the control of giving vent to anger.At least four fixing feet 1 are installed in magnesium and magnesium-alloy quantitative casting furnace bottom, are placed on the die casting machine horizontal plane 33.
As shown in Figure 2: first electric heating assembly includes that first electric heating part, 4, the first electric heating parts 4 that are used to wrap up described big capacity crucible 5 are outer to be provided with first shell 2 through first heat-insulation layer 3.Be used to preserve first electric heating part 4 and discharge heat energy, prevent that heat energy dissipation from causing melt temperature to change.
As shown in Figure 3: described unidirectional Intaker controller includes the air inlet pipe 16 of at least one air inlet 12, and this air inlet pipe 16 is communicated with the inlet duct 14 and the inertia source of the gas 14a of air inlet controller 13 controls through check valve 15; Described air inlet 12 is arranged in the pressure chamber 7 that big capacity crucible 5 tops constitute.Its working method is that air inlet controller 13 is squeezed into by inlet duct 14, air inlet pipe 16 and air inlet 12 in the big capacity crucible 5 that has sealed producing the inertia source of the gas 14a that needs, and forms pressure chamber 7.Check valve 15 is installed in the gas circuit, guarantees gas pressure and prevent gas backstreaming.The effect of pressure chamber 7 is that liquation in first melt chamber 6 is flowed into discharging suction inlet 20a by the discharge nozzle 19 that extend in the molten metal, and molten metal flows in second melt chamber 25 of quantitative stove 26.
What big capacity crucible 5 was sealed is metal cover board 8, with stainless steel screw rod 11 metal cover board 8 and big capacity crucible 5 is sealed assembling, cushioning graphite grazing pad between metal cover board 8 and the big capacity crucible 5.Metal cover board 8 has salable bell 9, tightens with thread screw between metal bell 8 and the metal cover board 9, prevents that gas is excessive.Adding salable bell 9 can handled easily person check situation in the crucible, and the convenient metal that adds is cleared up impurity in the crucible, makes things convenient for Quality Inspector's sample examination simultaneously.On sealing bell 9 relief valve 10 is installed, relief valve 10 communicates with big capacity crucible 5.Maybe need cleaning in emergency, when checking that big capacity crucible 5 maybe needs to add metal, open relief valve 10 earlier the pressure in the big capacity crucible 5 are let out to normal atmosphere (An) opening encapsulation bell then.
As shown in Figure 3, Figure 4: described second electric heating assembly includes that second electric heating part, 18, the second electric heating parts 18 that are used to wrap up described discharge nozzle 19 are outer to be provided with second heat-insulation layer 17, is used to keep discharge nozzle temperature and melt temperature.The discharging suction inlet 20a of described discharge nozzle 19 stretches in first melt chamber 6 of described big capacity crucible 5 bottoms formation; The discharging mouth of pipe 20b of described discharge nozzle 19 stretches in second melt chamber 25 of described quantitative stove 26 tops formation.Described the 3rd electric heating assembly comprises in the 3rd electric heating part 27, the three electric heating parts 27 through the described quantitative stove 26 of insulation inner chamber 30 parcels; Be provided with second shell 29 through the 3rd heat-insulation layer 28 outside the 3rd electric heating part 27, described quantitative stove 26 is provided with bell 24, and bell 24 is penetrated with the protection gas air inlet 23 that feeds melt chamber 25.Described quantitative stove 26 bottoms are provided with the running channel 31 that runs through quantitative stove 26, insulation inner chamber 30, the 3rd heat-insulation layer 28, second shell 29, are positioned at these running channel 31 bottoms and are provided with die casting machine material cup 32.Described running channel 31 tops are equipped with the valve body 21 that can freely open and close with quantitative stove junction, and valve body 21 runs through quantitative stove 26, is incubated inner chamber 30, the 3rd heat-insulation layer 28, second shell 29 link to each other with quantitative stove control valve 22.
Have bell 24 on quantitative stove top, this bell 24 does not need the sealing assembling, mainly has been the convenient effect of observing quantitative stove 26 inner cases and molten slag removal.Have protection gas air inlet 23 on the bell 24, can feed protective gas.Quantitatively stove 26 outside the 3rd electric heating assemblies can be heated to the die casting optimum temperature with second melt chamber 25 in the quantitative stove 26, cast then.Quantitatively stove 26 bottoms are inclined planes, and the bottom, inclined plane links to each other with running channel 31, are sealed in the valve body of being controlled by quantitative stove control valve 22 between quantitative stove 26 bottom angled faces and the running channel 21 by startup, molten metal is flow in the die casting machine material cup 32 finish casting.
The operating principle of the embodiment of the invention is as follows:
Magnesium and magnesium-alloy quantitative casting furnace are placed on the die casting machine horizontal plane 33, and quantitatively the running channel 31 of stove 26 is over against die casting machine material cup 32 positions.Magnesium or magnesium alloy in the big capacity crucible 5 also are incubated through the first electric heating assembly heat fused.Air inlet controller 13 control inlet ducts 14 inject big capacity crucible 5 with inert gas 14a by check valve 15 and air inlet pipe 16 and form pressure chamber 7, pressure chamber 7 active forces make magnesium alloy molten metal in first melt chamber 6 flow into discharging suction inlet 20a by second electric heating assembly heating discharge nozzle 19, flow out from discharging opening 20b, enter by the 3rd electric heating assembly and heat second melt chamber 25 in the quantitative stove 26, quantitatively stove control valve 22 application valve bodies 21 are opened, liquid magnesium alloy is because gravitational effect flows into die casting machine material cup 32 by running channel 31, quantitatively stove control valve 22 application valve bodies 21 are closed and are finished quantitative casting one time, successively circulation.
The advantage of this patent is: magnesium and magnesium-alloy quantitative casting furnace and horizontal type cold-chamber die casting horizontal positioned, and utilize air pressure principle filling inert gas to finish the quantitative casting of molten metal. Small one and large one two bodies of heater play different effects, and big body of heater heat tracing molten metal keeps gas pressure, and omnidistance sealing does not contact with the external world, guarantees metal quality, is equipped with simultaneously relief valve and has easy cleaning, convenient reinforced function. The port body and function unit of depositing needs the liquation of quantitative casting, because of the volume I with accurate heating liquation to optimum temperature, guarantee casting quality. This patent has features simple structure, easily operation, safeguards easily, safe and reliable, few to environment and personnel's pollution characteristics thereby make.
Claims (9)
1. magnesium and magnesium-alloy quantitative casting furnace, comprise the outer big capacity crucible (5) that is provided with first electric heating assembly, it is characterized in that: described big capacity crucible (5) through outside be provided with second electric heating assembly discharge nozzle (19) be provided with the quantitative stove (26) of the 3rd electric heating assembly outside being communicated with, described big capacity crucible (5) is provided with the equipped metal cover board (8) of sealing, this metal cover board (8) is penetrated with unidirectional Intaker controller and discharge nozzle (19), and the sealing bell (9) of this metal cover board (8) is provided with the relief valve (10) of the control of giving vent to anger.
2. magnesium according to claim 1 and magnesium-alloy quantitative casting furnace, it is characterized in that: described unidirectional Intaker controller includes the air inlet pipe (16) of at least one air inlet (12), and this air inlet pipe (16) is communicated with inlet duct (14) and the inertia source of the gas of being controlled by air inlet controller (13) (14a) through check valve (15); Described air inlet (12) is arranged in the pressure chamber (7) that described big capacity crucible (5) top constitutes.
3. magnesium according to claim 2 and magnesium-alloy quantitative casting furnace is characterized in that: the discharging suction inlet (20a) of described discharge nozzle (19) stretches in first melt chamber (6) of described big capacity crucible (5) bottom formation; The discharging mouth of pipe (20b) of described discharge nozzle (19) stretches in second melt chamber (25) of described quantitative stove (26) top formation.
4. magnesium according to claim 3 and magnesium-alloy quantitative casting furnace, it is characterized in that: described first electric heating assembly includes first electric heating part (4) that is used to wrap up described big capacity crucible (5), and first electric heating part (4) is outer to be provided with first shell (2) through first heat-insulation layer (3).
5. magnesium according to claim 4 and magnesium-alloy quantitative casting furnace, it is characterized in that: described second electric heating assembly includes second electric heating part (18) that is used to wrap up described discharge nozzle (19), outer second heat-insulation layer (17) that is provided with of second electric heating part (18).
6. magnesium according to claim 5 and magnesium-alloy quantitative casting furnace, the 3rd electric heating assembly comprise the 3rd electric heating part (27), wrap up described quantitative stove (26) through insulation inner chamber (30) in the 3rd electric heating part (27); The 3rd electric heating part (27) is outer to be provided with second shell (29) through the 3rd heat-insulation layer (28), and described quantitative stove (26) is provided with bell (24), and bell (24) is penetrated with the protection gas air inlet (23) that feeds second melt chamber (25).
7. magnesium according to claim 6 and magnesium-alloy quantitative casting furnace, it is characterized in that: described quantitative stove (26) bottom is provided with the running channel (31) that runs through quantitative stove (26), insulation inner chamber (30), the 3rd heat-insulation layer (28), second shell (29), is positioned at this running channel (31) bottom and is provided with die casting machine material cup (32).
8. according to described magnesium of claim 7 and magnesium-alloy quantitative casting furnace, it is characterized in that: described running channel (31) top is equipped with the valve body (21) that can freely open and close with quantitative stove (26) junction, and valve body (21) runs through quantitative stove (26), is incubated inner chamber (30), the 3rd heat-insulation layer (28), second shell (29) link to each other with quantitative stove control valve (22).
9. magnesium according to claim 8 and magnesium-alloy quantitative casting furnace is characterized in that: at least four fixing feet (1) are installed in the bottom of described first shell (2), and this fixing feet (1) is placed on the horizontal plane (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010179912 CN101817075A (en) | 2010-05-21 | 2010-05-21 | Magnesium and magnesium-alloy quantitative casting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010179912 CN101817075A (en) | 2010-05-21 | 2010-05-21 | Magnesium and magnesium-alloy quantitative casting furnace |
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| CN 201010179912 Pending CN101817075A (en) | 2010-05-21 | 2010-05-21 | Magnesium and magnesium-alloy quantitative casting furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773468A (en) * | 2012-08-15 | 2012-11-14 | 广州有色金属研究院 | Heat-preservation quantitative casting furnace for aluminum liquid |
| CN104972093A (en) * | 2015-07-03 | 2015-10-14 | 朱洋 | Anti-explosion magnesium alloy pouring furnace |
| CN105987600A (en) * | 2015-01-29 | 2016-10-05 | 边仁杰 | Bottom protrusion of heat-insulation furnace |
| CN111442645A (en) * | 2020-04-02 | 2020-07-24 | 中国核动力研究设计院 | Heating furnace and heating system for preparing liquid chloride |
| CN111889660A (en) * | 2020-08-04 | 2020-11-06 | 天津宏镁科技有限公司 | Magnesium alloy rapid melting device and quantitative control discharging system thereof |
| CN113909451A (en) * | 2021-10-13 | 2022-01-11 | 宁波众创智能科技有限公司 | Continuous on-line degassing quantitative furnace |
| CN114184040A (en) * | 2021-12-08 | 2022-03-15 | 天长市兴宇交通装备科技有限公司 | Precision casting furnace |
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| JP2004148408A (en) * | 2000-12-27 | 2004-05-27 | Hoei Shokai:Kk | Vessel |
| CN2657826Y (en) * | 2003-10-29 | 2004-11-24 | 东风汽车有限公司 | Stepping magnesium alloy quantitative feeding device for die casting machine |
| CN2796900Y (en) * | 2005-06-23 | 2006-07-19 | 重庆市机电设计研究院 | Quantitative transfer device of molten magnesium alloy liquid |
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| JPH07195166A (en) * | 1993-12-29 | 1995-08-01 | Kobe Steel Ltd | Method for shifting molten metal in low pressure casting machine and its device |
| JPH08164459A (en) * | 1994-12-13 | 1996-06-25 | Nikko Kinzoku Kk | Method for automatically controlling pouring of molten metal in pressure molten metal pouring furnace |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773468A (en) * | 2012-08-15 | 2012-11-14 | 广州有色金属研究院 | Heat-preservation quantitative casting furnace for aluminum liquid |
| CN105987600A (en) * | 2015-01-29 | 2016-10-05 | 边仁杰 | Bottom protrusion of heat-insulation furnace |
| CN105987600B (en) * | 2015-01-29 | 2019-09-10 | 边仁杰 | The convex holding furnace in bottom |
| CN104972093A (en) * | 2015-07-03 | 2015-10-14 | 朱洋 | Anti-explosion magnesium alloy pouring furnace |
| CN111442645A (en) * | 2020-04-02 | 2020-07-24 | 中国核动力研究设计院 | Heating furnace and heating system for preparing liquid chloride |
| CN111889660A (en) * | 2020-08-04 | 2020-11-06 | 天津宏镁科技有限公司 | Magnesium alloy rapid melting device and quantitative control discharging system thereof |
| CN111889660B (en) * | 2020-08-04 | 2022-04-29 | 天津宏镁科技有限公司 | Magnesium alloy rapid melting device and quantitative control discharging system thereof |
| CN113909451A (en) * | 2021-10-13 | 2022-01-11 | 宁波众创智能科技有限公司 | Continuous on-line degassing quantitative furnace |
| CN113909451B (en) * | 2021-10-13 | 2023-09-29 | 宁波众创智能科技有限公司 | Continuous on-line degassing quantitative furnace |
| CN114184040A (en) * | 2021-12-08 | 2022-03-15 | 天长市兴宇交通装备科技有限公司 | Precision casting furnace |
| CN114184040B (en) * | 2021-12-08 | 2023-11-07 | 天长市兴宇交通装备科技有限公司 | Precision casting furnace |
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Open date: 20100901 |