CN201799581U - Non-electroslag remelting type clean metal ingot mould - Google Patents
Non-electroslag remelting type clean metal ingot mould Download PDFInfo
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- CN201799581U CN201799581U CN2010205497501U CN201020549750U CN201799581U CN 201799581 U CN201799581 U CN 201799581U CN 2010205497501 U CN2010205497501 U CN 2010205497501U CN 201020549750 U CN201020549750 U CN 201020549750U CN 201799581 U CN201799581 U CN 201799581U
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- ingot mould
- heat preservation
- mould body
- preservation mechanism
- electroslag remelting
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Abstract
The utility model discloses a non-electroslag remelting type clean metal ingot mould which comprises an ingot mould body and an insulating riser arranged on the ingot mould body, wherein a separating, heating and insulating mechanism is vertically arranged in the ingot mould body and divides a space in the ingot mould body into a plurality of independent mould cavity units, and the mould cavity units are distributed in the ingot mould body in two rows. The separating, heating and insulating mechanism is arranged in the ingot mould body and divides the space in the ingot mold body into a plurality of independent mould cavity units, in the directional solidification and crystallization processes of a liquid metal, most inclusions and impurities in the liquid metal are all enriched at a position in contact with the separating, heating and insulating mechanism, and the enriched alloy impurities and the inclusions are easily removed by using flame or other processing methods, thereby realizing the purposes of transferring and eliminating the impurities and the inclusions inside a cast ingot and purifying the cast ingot.
Description
Technical field
The utility model belongs to the metallurgical casting equipment technical field, is specifically related to the clean metal ingot mould of a kind of non-electroslag remelting formula.
Background technology
In known technology, what realized clean steel production usefulness is electroslag furnace remelting technology in the past, fills slag fused in the copper water mold, and consutrode one end inserts in the slag.Consutrode, slag bath, metal bath, steel ingot, end water tank form the loop by short net lead and transformer.In galvanization, slag bath is emitted Joule heat, and the consutrode termination is melted gradually, and motlten metal pools drop, passes slag bath, falls into crystallizer, forms metal bath, is subjected to the water-cooled effect, solidifies the formation steel ingot rapidly.Form the stage at the electrode tip drop, and drop passes the slag bath drippage stage, steel-slag fully contacts, and nonmetallic inclusionsin steel is absorbed by slag.Harmful element in the steel (sulphur, lead, antimony, bismuth, tin) is removed more effectively by steel-slag reaction and high-temperature gasification, but steel ingot melts once more and need expend a large amount of electric energy, also restricting large-scale industrial production, and contain a large amount of calcirm-fluoride in the slag charge, contaminated environment must be provided with dedusting and remove the fluorine device.In addition, efficient is also low especially, and particularly the electric arc of Chan Shenging is also very serious to the injury of crystallizer, and a crystallizer mold adopts electroslag furnace remelting mode can only refine the steel of many tens stoves, has improved production cost.Common casting ingot method does not reach clean effect again.
The utility model content
For solving the above-mentioned defective that prior art exists, the purpose of this utility model is to provide the clean metal ingot mould of non-electroslag remelting formula of a kind of energy savings, minimizing pollutant emission, production efficiency height, long service life.After adopting this equipment, converter, electric furnace, LF stove, VD stove are smelted the molten steel that and can directly be poured in this equipment, obtain clean steel casting ingot, significantly cut down the consumption of energy, and significantly enhance productivity, and reduce production costs.
The clean metal ingot mould of a kind of non-electroslag remelting formula, be arranged on the platen, comprise that ingot mould body and the insulation that is arranged on the ingot mould body emit, vertically be provided with in the described ingot mould body and isolate heat preservation mechanism, described isolation heat preservation mechanism becomes a plurality of independently die cavitys unit with space segmentation in the ingot mould body, and described die cavity unit is two rows and distributes in the ingot mould body.
The described bottom that a plurality of die cavitys unit is divided into two rows' isolation heat preservation mechanism is provided with the convex ridge with ingot mould end template one.
The bottom of described isolation heat preservation mechanism is provided with the convex ridge with ingot mould end template one.
Described ingot mould body is a water cooling ingot mould.
Described ingot mould body is common ingot mould.
Circumferential template on the described ingot mould body flexibly connects by hydraulic mechanism or screw mandrel screw framework originally external with being arranged on ingot mould.
Described isolation heat preservation mechanism is a high temperature resistant plate.
Described isolation heat preservation mechanism comprises high temperature resistant plate and is arranged on the thermal part of forcing of high temperature resistant plate inside.
On the described ingot mould body casting system is set.
Described casting system comprises the sprue that is arranged on outside the framework, and the described sprue cross gate interior with being arranged on platen is communicated with, and described cross gate is communicated with a plurality of independent die cavity unit of ingot mould body interior respectively by a plurality of ingates.
Described casting system comprises the sprue that is arranged on outside the framework, and the described sprue cross gate interior with being arranged on end template is communicated with, and described cross gate is communicated with a plurality of independent die cavity unit of ingot mould body interior respectively by a plurality of ingates.
The draw-in groove that is used with isolation heat preservation mechanism is set on the described ingot mould inner body wall, the two ends of described isolation heat preservation mechanism are arranged in the draw-in groove, on the inwall that described insulation is emitted draw-in groove is set, the described connecting portion clamping of going up draw-in groove and isolating heat preservation mechanism.
Because the utility model is in the mode of non-electroslag remelting, in the ingot mould body, be provided with and isolate heat preservation mechanism, isolate heat preservation mechanism space segmentation in the ingot mould body is become a plurality of independently die cavitys unit, described die cavity unit is two rows and distributes in the ingot mould body, in the process of liquid metal solidification crystallization, each independently all has the initial surface that solidifies of fast outwards heat conduction in the die cavity unit, the i.e. face that contacts with circumferential template, also has the terminal surface that solidifies that contacts with isolation heat preservation mechanism, the liquid metal rapid solidification that contacts with water-cooled template or other templates, and to the slowly crystallization of direction of isolating heat preservation mechanism, in the process of crystallization and freezing formation crystal, field trash in the liquid metal and segregation thing are caught up with toward uncrystallized direction, near the position that isolates heat preservation mechanism because of away from the low temperature final set, the field trash of the interior overwhelming majority of liquid metal all is enriched at last after the liquid metal directional solidification with the segregation thing and isolates the part that heat preservation mechanism contacts, this just is easy to flame or other method for processing alloy segregation thing with enrichment, inclusion removal, thereby realized the inner segregation thing of ingot casting, field trash shifts, remove, reached the purpose that purifies ingot casting.Compare with existing electroslag remelting technique, need not secondary fusion, can realize the purification of metal inside, save a large amount of energy, the harm that can avoid electroslag remelting to bring the hydrogen white point simultaneously to ingot casting, production efficiency significantly improves, and cost significantly descends.
At the convex ridge of the bottom setting of isolating heat preservation mechanism with ingot mould end template one, can emit the location with moving on to insulation on " V " type impurity range that produces in the liquid metal crystallization process in the ingot mould, make impurity more depart from the ingot casting center, and it is more concentrated, make things convenient for the later stage that impurity is handled, realize the cleaning of metal.
In the described isolation heat preservation mechanism strong heat generating components is set, can be when ingot mould water feed liquor attitude metal, just heat up in advance, avoid absorbing the heat of molten metal, and in the process of liquid metal directional solidification, the existence of isolating heat preservation mechanism can guarantee that the part that is in contact with it is in the state of high temperature always, in the liquid metal field trash of the overwhelming majority and segregation thing after the liquid metal directional solidification more the concentrated area be enriched in and isolate the zone that heat preservation mechanism contacts, easier processing.
Casting system is communicated with the bottom of ingot mould, can better control the flow velocity of liquid metal, a plurality of ingates are communicated with a plurality of independent sectors of ingot mould body interior respectively, can be so that the liquid metal lifting height basic horizontal of each independent sector, thus guaranteed that liquid metal is to isolating the balance of heat preservation mechanism pressure in each ingot chamber.The draw-in groove that is used with isolation heat preservation mechanism is set on the inwall that described water-cooled template and insulation are emitted, guarantee to isolate the upright of heat preservation mechanism on the one hand, insulation last draw-in groove that emits and the oblique clamping of isolating heat preservation mechanism makes and isolates heat preservation mechanism fixed-site in the process of liquid metal solidification on the other hand, the gravity that insulation is emitted is pushed down and is isolated heat preservation mechanism, do not allow its come-up, guarantee to isolate the reliable and stable of heat preservation mechanism in the casting process, and then guaranteed the shape of ingot casting.The utility model can be arranged to a plurality of die cavitys of two rows unit as required, and an ingot casting is cleared up one time running channel, can realize the clean crystallization and freezing of polylith even tens of blocks of ingots, has improved operating efficiency greatly, has reduced production cost.
Description of drawings
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of the utility model embodiment two.
Fig. 4 is the structural representation of ingot mould body part among the utility model embodiment three.
Fig. 5 is the structural representation of ingot mould body part among the utility model embodiment four.
Fig. 6 is the structural representation of ingot mould body part among the utility model embodiment five.
Fig. 7 is an ingot mould body part liquid metal crystallographic orientation direction schematic diagram among the utility model embodiment five.
The specific embodiment
Embodiment one:
As shown in Figure 1 and Figure 2: the clean metal ingot mould of a kind of non-electroslag remelting formula, be arranged on the platen 1, comprise that the ingot mould body be made up of common templates 13 and the insulation that is arranged on the ingot mould body 13 emit 9, on the described ingot mould body 13 casting system is set, vertically be provided with in the described ingot mould body 13 and isolate heat preservation mechanism 8, described isolation heat preservation mechanism 8 becomes two independently die cavity unit 14 with space segmentation in the ingot mould body 13, and described die cavity unit 14 is two rows and distributes in ingot mould body 13.Described ingot mould body 13 is made up of four vertical templates and an end template 2, and described vertical template flexibly connects with the framework 6 that is arranged on outside the ingot mould body 13 by hydraulic mechanism 7 or screw mandrel screw.Described isolation heat preservation mechanism 8 is a high temperature resistant plate.
Described casting system is communicated with the bottom of ingot mould body 13, comprise the sprue 3 that is arranged on outside the framework 6, described sprue 3 is communicated with cross gate 4 in being arranged on platen 1, and described cross gate 4 passes through two ingates 5 and is communicated with two independent die cavity unit 14 of ingot mould body 13 inside respectively.The draw-in groove 10 that is used with isolation heat preservation mechanism 8 is set on described ingot mould body 13 inwalls, the two ends of described isolation heat preservation mechanism 8 are arranged in the draw-in groove 10, described insulation is emitted on 9 the inwall draw-in groove 11 is set, and describedly goes up draw-in groove 11 and the connecting portion clamping of isolating heat preservation mechanism 8.
Embodiment two:
As shown in Figure 3: the clean metal ingot mould of a kind of non-electroslag remelting formula, comprise that the ingot mould body be made up of the water-cooled template 13 and the insulation that is arranged on the ingot mould body 13 emit 9, on the described ingot mould body 13 casting system is set, vertically be provided with in the described ingot mould body 13 and isolate heat preservation mechanism 8, described isolation heat preservation mechanism 8 comprises high temperature resistant plate and is arranged on the thermal part of forcing of high temperature resistant plate inside, as voltage thermal part or combustion gas heater block.Described isolation heat preservation mechanism 8 becomes two independently die cavity unit 14 with space segmentation in the ingot mould body 13, and described die cavity unit 14 is two rows and distributes in ingot mould body 13.Described ingot mould body 13 is made up of four vertical water-cooled templates and a water-cooled end template 2, and described vertical water-cooled template flexibly connects with the framework 6 that is arranged on outside the ingot mould body 13 by hydraulic mechanism 7 or screw mandrel screw.The described bottom that a plurality of die cavitys unit is divided into two rows' isolation heat preservation mechanism 8 is provided with the convex ridge 18 with ingot mould end template one.
Described casting system is communicated with the bottom of ingot mould body 13, comprise and be arranged on the outer sprue 3 of framework, described sprue 3 is communicated with cross gate 4 in being arranged on end template 2, and described cross gate 4 passes through two ingates 5 and is communicated with two independent die cavity unit 14 of ingot mould body 13 inside respectively.The draw-in groove 10 that is used with isolation heat preservation mechanism 8 is set on described ingot mould body 13 inwalls, the two ends of described isolation heat preservation mechanism 8 are arranged in the draw-in groove 10, described insulation is emitted on 9 the inwall draw-in groove 11 is set, and describedly goes up draw-in groove 11 and the connecting portion clamping of isolating heat preservation mechanism 8.
Embodiment three:
As shown in Figure 4: the clean metal ingot mould of a kind of non-electroslag remelting formula, be arranged on the platen 1, comprise that the ingot mould body be made up of the water-cooled template 13 and the insulation that is arranged on the ingot mould body 13 emit 9, on the described ingot mould body 13 casting system is set, vertically be provided with in the described ingot mould body 13 and isolate heat preservation mechanism 8, described isolation heat preservation mechanism 8 comprises high temperature resistant plate and is arranged on the thermal part of forcing of high temperature resistant plate inside, as voltage thermal part or combustion gas heater block.Described two isolation heat preservation mechanisms 8 of intersecting anyhow become four independently die cavity unit 14 with space segmentation in the ingot mould body 13, and described die cavity unit 14 is two rows and distributes in ingot mould body 13.Described ingot mould body 13 is made up of four vertical water-cooled templates and a water-cooled end template 2, and described vertical water-cooled template flexibly connects with the framework 6 that is arranged on outside the ingot mould body 13 by hydraulic mechanism 7 or screw mandrel screw.The bottom of described isolation heat preservation mechanism 8 is provided with the convex ridge 18 of ingot mould end template one.
Described casting system is communicated with the bottom of ingot mould body 13, comprise and be arranged on the outer sprue 3 of framework, described sprue 3 is communicated with cross gate 4 in being arranged on end template 2, and described cross gate 4 passes through four ingates 5 and is communicated with four independent die cavity unit 14 of ingot mould body 13 inside respectively.The draw-in groove 10 that is used with isolation heat preservation mechanism 8 is set on described ingot mould body 13 inwalls, the two ends of described isolation heat preservation mechanism 8 are arranged in the draw-in groove 10, described insulation is emitted on 9 the inwall draw-in groove 11 is set, and describedly goes up draw-in groove 11 and the connecting portion clamping of isolating heat preservation mechanism 8.
Embodiment four:
As shown in Figure 5: the clean metal ingot mould of a kind of non-electroslag remelting formula, be arranged on the platen 1, comprise that the ingot mould body be made up of the water-cooled template 13 and the insulation that is arranged on the ingot mould body 13 emit 9, on the described ingot mould body 13 casting system is set, vertically be provided with in the described ingot mould body 13 and isolate heat preservation mechanism 8, described isolation heat preservation mechanism 8 comprises high temperature resistant plate and is arranged on the thermal part of forcing of high temperature resistant plate inside, as voltage thermal part or combustion gas heater block.Described one horizontal four isolation heat preservation mechanism 8 vertical arranged in a crossed manner becomes ten independently die cavity unit 14 with space segmentation in the ingot mould body 13, and described die cavity unit 14 is two rows and distributes in ingot mould body 13.Described ingot mould body 13 is made up of four vertical water-cooled templates and a water-cooled end template 2, and described vertical water-cooled template flexibly connects with the framework 6 that is arranged on outside the ingot mould body 13 by hydraulic mechanism 7 or screw mandrel screw.The described bottom that a plurality of die cavitys unit is divided into two rows' isolation heat preservation mechanism 8 is provided with the convex ridge 18 with ingot mould end template one.
Described casting system is communicated with the bottom of ingot mould body 13, comprise and be arranged on the outer sprue 3 of framework, described sprue 3 is communicated with cross gate 4 in being arranged on end template 2, and described cross gate 4 passes through ten ingates 5 and is communicated with ten independent die cavity unit 14 of ingot mould body 13 inside respectively.The draw-in groove 10 that is used with isolation heat preservation mechanism 8 is set on described ingot mould body 13 inwalls, the two ends of described isolation heat preservation mechanism 8 are arranged in the draw-in groove 10, described insulation is emitted on 9 the inwall draw-in groove 11 is set, and describedly goes up draw-in groove 11 and the connecting portion clamping of isolating heat preservation mechanism 8.
Embodiment five:
As shown in Figure 6: the clean metal ingot mould of a kind of non-electroslag remelting formula, be arranged on the platen 1, comprise that the ingot mould body be made up of the water-cooled template 13 and the insulation that is arranged on the ingot mould body 13 emit 9, on the described ingot mould body 13 casting system is set, vertically be provided with in the described ingot mould body 13 and isolate heat preservation mechanism 8, described one horizontal two isolation heat preservation mechanism 8 vertical arranged in a crossed manner becomes six independently die cavity unit 14 with space segmentation in the ingot mould body 13, and described die cavity unit 14 is two rows and distributes in ingot mould body 13.Described ingot mould body 13 is made up of vertical water-cooled template and a water-cooled end template 2, and described vertical water-cooled template flexibly connects with the framework 6 that is arranged on outside the ingot mould body 13 by hydraulic mechanism 7 or screw mandrel screw.The described bottom that a plurality of die cavitys unit is divided into two rows' isolation heat preservation mechanism 8 is provided with the convex ridge 18 with ingot mould end template one.Described casting system is communicated with the bottom of ingot mould body 13, comprise and be arranged on the outer sprue 3 of framework, described sprue 3 is communicated with cross gate 4 in being arranged on end template 2, and described cross gate 4 passes through six ingates 5 and is communicated with six independent die cavity unit 14 of ingot mould body 13 inside respectively.The draw-in groove 10 that is used with isolation heat preservation mechanism 8 is set on described ingot mould body 13 inwalls, the two ends of described isolation heat preservation mechanism 8 are arranged in the draw-in groove 10, described insulation is emitted on 9 the inwall draw-in groove 11 is set, and describedly goes up draw-in groove 11 and the connecting portion clamping of isolating heat preservation mechanism 8.
As shown in Figure 7: the water cooled mo(u)ld strip on the ingot mould body 13 is walked a large amount of heat, can guarantee liquid metal cooling fast in ingot mould, each independently die cavity unit 14 fast outwards heat conduction all arranged solidify initial surface 16, also have with isolate that heat preservation mechanism 8 contacts solidify terminal surface 17, liquid metal rapid solidification with the thermo-contact of water-cooled template, and by solidify initial surface 16 along the direction of arrow among the figure to the slowly crystallization of direction of isolating heat preservation mechanism 8, in the process of crystallization and freezing formation crystal, field trash in the liquid metal and segregation thing are caught up with toward uncrystallized direction, solidify terminal surface 17 because of away from the low temperature final set near the position that isolates heat preservation mechanism 8, the field trash of the overwhelming majority and segregation thing all are being enriched in after the liquid metal directional solidification and near solidifying the terminal surface 17 of isolating that heat preservation mechanism contacts at last in the liquid metal, form impurity enriched district 15, be easy to flame or other method for processing alloy segregation thing enrichments in the impurity enriched district 15, inclusion removal, thereby realized the inner segregation thing of ingot casting, field trash shifts, remove, reached the purpose that purifies ingot casting.
Protection domain of the present utility model is not limited to the foregoing description; isolate heat preservation mechanism as long as be provided with in the ingot mould; isolate heat preservation mechanism space segmentation in the ingot mould body is become a plurality of independently die cavitys unit; described die cavity unit is two rows and distributes in the ingot mould body, all send out to belong within the protection domain of the present utility model.In addition, the utility model also not only is confined to common ingot mould, water cooling ingot mould, and be suitable for the crystallizer ingot mould.
Claims (10)
1. clean metal ingot mould of non-electroslag remelting formula, be arranged on the platen, comprise that ingot mould body and the insulation that is arranged on the ingot mould body emit, it is characterized in that: vertically be provided with in the described ingot mould body and isolate heat preservation mechanism, described isolation heat preservation mechanism becomes a plurality of independently die cavitys unit with space segmentation in the ingot mould body, and described die cavity unit is two rows and distributes in the ingot mould body.
2. the clean metal ingot mould of non-electroslag remelting formula as claimed in claim 1 is characterized in that: the described bottom that a plurality of die cavitys unit is divided into two rows' isolation heat preservation mechanism is provided with the convex ridge with ingot mould end template one.
3. the clean metal ingot mould of non-electroslag remelting formula as claimed in claim 1 is characterized in that: the bottom of described isolation heat preservation mechanism is provided with the convex ridge of ingot mould end template one.
4. as claim 1, the clean metal ingot mould of 2 or 3 described non-electroslag remelting formulas, it is characterized in that: described ingot mould body is a water cooling ingot mould.
5. as claim 1, the clean metal ingot mould of 2 or 3 described non-electroslag remelting formulas, it is characterized in that: described ingot mould body is common ingot mould.
6. the clean metal ingot mould of non-electroslag remelting formula as claimed in claim 1 is characterized in that: the circumferential template on the described ingot mould body flexibly connects by hydraulic mechanism or screw mandrel screw framework originally external with being arranged on ingot mould.
7. as claim 1, the clean metal ingot moulds of 2 or 3 described non-electroslag remelting formulas, it is characterized in that: described isolation heat preservation mechanism is a high temperature resistant plate.
8. as claim 1, the clean metal ingot moulds of 2 or 3 described non-electroslag remelting formulas, it is characterized in that: described isolation heat preservation mechanism comprises high temperature resistant plate and is arranged on the thermal part of forcing of high temperature resistant plate inside.
9. as claim 1, the clean metal ingot mould of 2 or 3 described non-electroslag remelting formulas, it is characterized in that: on the described ingot mould body casting system is set.
10. as claim 1, the clean metal ingot mould of 2 or 3 described non-electroslag remelting formulas, it is characterized in that: the draw-in groove that is used with isolation heat preservation mechanism is set on the described ingot mould inner body wall, the two ends of described isolation heat preservation mechanism are arranged in the draw-in groove, on the inwall that described insulation is emitted draw-in groove is set, the described connecting portion clamping of going up draw-in groove and isolating heat preservation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205497501U CN201799581U (en) | 2010-09-30 | 2010-09-30 | Non-electroslag remelting type clean metal ingot mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205497501U CN201799581U (en) | 2010-09-30 | 2010-09-30 | Non-electroslag remelting type clean metal ingot mould |
Publications (1)
| Publication Number | Publication Date |
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| CN201799581U true CN201799581U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205497501U Expired - Lifetime CN201799581U (en) | 2010-09-30 | 2010-09-30 | Non-electroslag remelting type clean metal ingot mould |
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| CN (1) | CN201799581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966562A (en) * | 2010-09-30 | 2011-02-09 | 西峡龙成特种材料有限公司 | Non-electroslag remelting type clean metal ingot mould |
| WO2012174991A1 (en) * | 2011-06-20 | 2012-12-27 | Zhu Shucheng | Pouring device for liquid state molten steel |
| CN107460288A (en) * | 2017-08-09 | 2017-12-12 | 东北大学 | A kind of carbon steel, being segregated of steel alloy, loose improvement device and process |
-
2010
- 2010-09-30 CN CN2010205497501U patent/CN201799581U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966562A (en) * | 2010-09-30 | 2011-02-09 | 西峡龙成特种材料有限公司 | Non-electroslag remelting type clean metal ingot mould |
| CN101966562B (en) * | 2010-09-30 | 2013-07-03 | 西峡龙成特种材料有限公司 | Non-electroslag remelting type clean metal ingot mould |
| WO2012174991A1 (en) * | 2011-06-20 | 2012-12-27 | Zhu Shucheng | Pouring device for liquid state molten steel |
| CN107460288A (en) * | 2017-08-09 | 2017-12-12 | 东北大学 | A kind of carbon steel, being segregated of steel alloy, loose improvement device and process |
| CN107460288B (en) * | 2017-08-09 | 2018-08-14 | 东北大学 | A kind of carbon steel, being segregated of steel alloy, loose improvement device and process |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20120802 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |