CN101249559A - Multiple ingot vacuum running castings device and method for vacuum running castings using same - Google Patents
Multiple ingot vacuum running castings device and method for vacuum running castings using same Download PDFInfo
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- CN101249559A CN101249559A CNA2008100603126A CN200810060312A CN101249559A CN 101249559 A CN101249559 A CN 101249559A CN A2008100603126 A CNA2008100603126 A CN A2008100603126A CN 200810060312 A CN200810060312 A CN 200810060312A CN 101249559 A CN101249559 A CN 101249559A
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- 238000005266 casting Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 91
- 239000010959 steel Substances 0.000 claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000003755 preservative agent Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 3
- 238000000926 separation method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
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Abstract
The invention relates to a multi-ingot vacuum casting device and a method for implementing vacuum casting by using the device. The multi-ingot vacuum casting device comprises a pedestal, steel ingot molds, a vacuum tank, a vacuum cover, a vacuum cover vehicle, a tundish, a slide gate nozzle mechanism, a guide sleeve, a separation pipe, a lifting mechanism, a viewing window, a pump-out pipe, a vacuum pump system, a main vacuum valve, and a vacuum break valve, wherein the pedestal is arranged in the vacuum tank; the steel ingot molds are arranged on the pedestal; a vacuum cover is connected with a lifting mechanism arranged on the vacuum cover vehicle; the slide gate nozzle mechanism is arranged on the tundish; the guide sleeve and the viewing window are arranged on the vacuum cover; the slide gate nozzle mechanism, the guide sleeve and the steel ingot molds are communicated with each other; the main vacuum valve and the vacuum valve are arranged on the pump-out pipe; and the pump-out pipe is connected with the vacuum tank and the vacuum pump. The inventive technical proposal also includes the method for implementing vacuum casting by using the device. The multi-ingot vacuum casting device has the advantages that (1) the device has simple structure; (2) the molten steel casting process is carried out under high-vacuum condition to improve the quality of molten steel and eliminate the problem of unstable quality of small ingots formed by air casting; and (3) a plurality of ingots can be formed by one step, thus improving the production efficiency.
Description
Technical field:
The method that the invention discloses a kind of many ingots vacuum casting device and carry out vacuum pouring with this device is mainly used in the particularly vacuum pouring of pouring molten steel of casting industry.
Background technology:
Pouring molten steel at casting industry mainly adopts atmosphere cast and two kinds of methods of vacuum pouring, and the pouring molten steel major part of China's casting industry is to pour into a mould in atmosphere at present, heavy-duty machinery industry large-scale steel ingot in China is to pour into a mould under vacuum state, but only limit to the vacuum pouring of single large-scale steel ingot, steel ingot less than 20t is almost all poured into a mould in atmosphere, and cast causes the secondary oxidation of molten steel easily in atmosphere, generate a large amount of field trashes, molten steel can absorb airborne N in casting process simultaneously
2, H
2, O
2Deng gas, increase [H], [N], [O] content in the molten steel, reduce the quality of molten steel, finally influence the quality of steel ingot.
The vacuum pouring method also claims two vacuum pouring methods, and molten steel is earlier through vacuum refining (VD/VOD vacuum refining) degassing, dispel molten steel N
2, H
2, O
2Deng gas, stir by the argon gas under the vacuum, make the inclusion floating in the molten steel, purify hot metal.Utilize the Pyatyi vacuum pump system, the vacuum pouring chamber is dropped to 67Pa when following, the steel ladle that fills molten steel is hung the tundish top that is arranged on the vacuum container cover, molten steel is put into tundish, when the molten steel in the tundish reaches the molten steel amount of required cast, close ladle nozzle, open the basket pouring mouth of a river, molten steel is poured in the steel ingot through the water conservancy diversion cover.In casting process, be subjected to the effect of jar interior vacuum, the pour steel meeting forms the diffusing stream molten steel of certain angle of flare, under high vacuum state, the N in the molten steel
2, H
2, O
2, CO, CO
2Can be released rapidly Deng gas, the degasifying effect of molten steel is very desirable, avoids simultaneously in casting cycle, and molten steel is improved the quality of cast steel ingot by " secondary oxidation ".
Summary of the invention:
Technical problem to be solved by this invention provided a kind of reasonable in design, simple to operate, reliable, efficient is high, cost is low and the one-time formed many ingots vacuum casting device and the method for carrying out vacuum pouring with this device, mainly solve present atmosphere cast " secondary oxidation " problem, solve single the problem that vacuum pouring production efficiency is low simultaneously, improve little steel ingot vacuum pouring production efficiency.
The present invention addresses the above problem the technical scheme that is adopted: many ingots vacuum casting device, it is characterized in that described many ingots vacuum casting device is provided with the chassis, ingot mould, vacuum tank, vacuum cover, the vacuum cover car, tundish, slide gate mechanism, the water conservancy diversion cover, hoisting mechanism, observation window, pump-line, vacuum pump system, main vacuum valve, air valve, the chassis is installed in the vacuum tank, ingot mould is installed on the chassis, vacuum cover is connected with hoisting mechanism on being installed in the vacuum cover car, vacuum tank, vacuum cover, tundish, slide gate mechanism is formed an enclosed vacuum chamber, slide gate mechanism is installed on the tundish, the water conservancy diversion cover, observation window is installed on the vacuum cover, slide gate mechanism, water conservancy diversion cover and several ingot moulds are interconnected, main vacuum valve, air valve is installed on the pump-line, pump-line and vacuum tank, vacuum pump system connects.
5 ingot moulds are installed in the vacuum tank of the present invention, are interconnected between 5 ingot moulds and shared 1 chassis.
Vacuum cover of the present invention is suspended on vacuum cover car below, by lift mechanism lifts or put down vacuum cover.
The present invention also is provided with isocon, and several ingot moulds are interconnected by the isocon on the chassis.
The present invention solves the problems of the technologies described above the technical scheme that is adopted and comprises that also the above-mentioned many ingots vacuum casting device of a kind of usefulness carries out the method for vacuum casting, is characterized in that may further comprise the steps:
A, select ingot mould and chassis as requested, the isocon of shunting molten steel is installed on the chassis, require chassis, ingot mould, tundish, slide gate mechanism, water conservancy diversion cover are toasted, be heated to needed temperature according to baking process;
B, the chassis after will toasting are installed in the vacuum tank, and ingot mould is installed on the chassis, and slide gate mechanism is installed on the tundish;
C, the vacuum cover car is reached the vacuum tank position, cover on the vacuum tank vacuum cover closed by hoisting mechanism;
D, the water conservancy diversion cover is installed in the installing hole on the vacuum cover, tundish is hung on the vacuum cover closed, close the slide gate mechanism on the tundish;
E, start vacuum pump system by operation requirements, by pump-line vacuum chamber is vacuumized, after the vacuum in the vacuum tank reached below the 67Pa, the ladle that adopts driving will have molten steel hung above the tundish, and molten steel is put into tundish;
F, open slide gate mechanism, emit the molten steel in the tundish, in the ingot mould, the molten steel in the middle ingot mould was diverted to molten steel in other ingot mould by the isocon on the chassis in the middle of molten steel covered into through water conservancy diversion;
Observe the cast situation of molten steel in G, the casting process by observation window, when the molten steel in the ingot mould reaches the cast height, close slide gate mechanism, finish cast, and add the heat preserving agent insulation in surface of steel ingot;
H, close main vacuum valve, open air valve and make and recover atmospheric pressure in the vacuum tank, close vacuum pump system, hang away tundish, promote vacuum cover, the vacuum cover car is reached the standby station, molten steel surface in ingot mould adds an amount of heat preserving agent again, and steel ingot is incubated;
After the molten steel cools in I, the ingot mould, will be with the ingot mould of steel ingot to hang the demoulding of demoulding station, the cleaning chassis be that cast is prepared next time.
Many ingots vacuum casting device of the present invention and vacuum casting method thereof are compared with prior art, have following beneficial effect: 1, whole device is by chassis, ingot mould, vacuum tank, vacuum cover, vacuum cover car, tundish, slide gate nozzle, compositions such as water conservancy diversion cover, isocon, hoisting mechanism, observation window, pump-line, vacuum pump system, main vacuum valve, air valve, simple in structure.2, compare with existing many ingots atmosphere cast, pouring molten steel process of the present invention is carried out under high vacuum condition, and molten steel does not contact with air in casting process, can be by secondary oxidation, cause molten steel to pollute, and in casting process, effectively dispel the N in the molten steel
2, H
2, O
2, CO, CO
2Deng gas, improve the quality of molten steel.3, fundamentally eliminate small-sized steel ingot atmosphere casting quality problem of unstable, small-sized steel ingot is introduced the vacuum pouring field, can produce the clean steel ingot of high-quality of different tonnages, different size.4, prop up vacuum pouring with existing list and compare, the present invention can realize a plurality of steel ingot one-shot formings, enhances productivity greatly.5, this pouring technology adopts and to annotate and the method for the technology combination of making a bet, and effectively molten steel is assigned in each ingot mould equably, guarantees the casting quality of molten steel.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Among the figure: 1-chassis, 2-ingot mould, 3-vacuum tank, 4-vacuum cover, 5-vacuum cover car, 6-tundish, 7-slide gate mechanism, 8-water conservancy diversion cover, 9-hoisting mechanism, 10-observation window, 11-isocon, 12-pump-line, 13-Pyatyi vacuum pump system, 14-master's vacuum valve, 15-air valve.
The specific embodiment:
Referring to Fig. 1, many ingots of vacuum apparatus for pouring of the embodiment of the invention comprises: chassis 1, ingot mould 2, vacuum tank 3, vacuum cover 4, vacuum cover car 5, tundish 6, slide gate mechanism 7, water conservancy diversion cover 8, hoisting mechanism 9, observation window 10, isocon 11, pump-line 12, Pyatyi vacuum pump system 13, main vacuum valve 14, air valve 15, chassis 1 is installed in the vacuum tank 3, isocon 11 is installed in chassis 1, ingot mould 2 is installed on the chassis 1, vacuum cover 4 is connected with hoisting mechanism 9 on being installed in vacuum cover car 5, vacuum tank 3, vacuum cover 4, tundish 6, slide gate mechanism 7 is formed an enclosed vacuum chamber, slide gate mechanism 7 is installed on the tundish 6, water conservancy diversion cover 8, observation window 10 is installed on the vacuum cover 4, slide gate mechanism 7, water conservancy diversion cover 8 and several ingot moulds 2 are interconnected, main vacuum valve 14, air valve 15 is installed on the pump-line 12, pump-line 12 and vacuum tank 3, vacuum pump system 13 connects.
Be equipped with in the vacuum tank 3 of the embodiment of the invention and be interconnected between 2,5 ingot moulds 2 of 5 ingot moulds and shared 1 chassis.Vacuum cover 4 is suspended on vacuum cover car 5 belows, drives hoisting mechanism 9 and vacuum cover 4 translations by vacuum cover car 5, drives vacuum cover 4 by hoisting mechanism 9 and moves up and down.Middle ingot mould 2 (that in the middle of being positioned in 5 ingot moulds 2) is communicated with other ingot mould 2 by The One On The Chassis isocon 11.
The embodiment of the invention solves the problems of the technologies described above the technical scheme that is adopted and comprises that also the above-mentioned many ingots vacuum casting device of a kind of usefulness carries out the method for vacuum casting, may further comprise the steps:
A selects ingot mould and chassis as requested, and the isocon 11 of shunting molten steel is installed on the chassis 1, requires chassis 1, ingot mould 2, tundish 6, slide gate mechanism 7, water conservancy diversion cover 8 are toasted according to baking process, is heated to needed temperature;
B is installed to chassis 1 on the vacuum tank 3,5 ingot moulds 2 is installed on the chassis 1 again, and slide gate mechanism 7 is installed on the tundish 6;
C reaches vacuum tank 3 positions with vacuum cover car 5, drops on the vacuum tank 3 vacuum cover 4 closed by hoisting mechanism 9;
C hangs closure on the vacuum cover 4 with in water conservancy diversion cover 8 installing holes that are installed on the vacuum cover 4 with tundish 6, closes the slide gate mechanism 7 on the tundish;
D starts Pyatyi vacuum pump system 13 by the operation requirement, vacuumize by the vavuum pump in the Pyatyi vacuum pump system 13 and 12 pairs of vacuum chambers of the pump-line between the vacuum tank, after the vacuum in the vacuum tank 3 reaches below the 67Pa, the ladle that adopts driving will have molten steel hangs tundish 6 tops, according to the requirement of the needed molten steel amount of cast steel ingot, molten steel is put into tundish 6;
E opens slide gate mechanism 7, emits the molten steel in the tundish 6, and in the ingot mould 2, the molten steel in the middle ingot mould 2 was diverted to molten steel in other ingot mould 2 by the isocon 11 of The One On The Chassis particular design in the middle of molten steel entered through water conservancy diversion cover 8;
In the F casting process,, when the molten steel in the ingot mould 2 reaches the cast height, close slide gate mechanism 7, finish cast, and add the heat preserving agent insulation in surface of steel ingot by the cast situation that observation window 10 is observed molten steel;
G closes main vacuum valve 14, opens air valve 15 and makes recovery atmospheric pressure in the vacuum tank 3, closes Pyatyi vacuum pump system 13, hang away tundish 6, promote vacuum cover 4, vacuum cover car 5 is reached the standby station, molten steel surface in ingot mould 2 adds an amount of heat preserving agent again, and steel ingot is incubated.
After the H cooling, will be with the ingot mould 2 of steel ingot to hang the demoulding of demoulding station, cleaning chassis 1 is finished whole many ingots vacuum pouring technical process and is also prepared for cast next time.
The present invention is by above-mentioned design, overcome traditional atmosphere cast shortcoming, under high vacuum condition, carry out pouring molten steel, effectively dispel the N in the molten steel
2, H
2, O
2, CO, CO
2Deng gas, improve the quality of molten steel, avoid molten steel oxidized in the cast rules, the final quality that improves the cast steel ingot.The present invention overcomes the shortcoming of the vacuum pouring explained hereafter inefficiency of single steel ingot by above-mentioned design, improves the production efficiency of vacuum pouring greatly.Reduce the power source consumption of Pyatyi vacuum pump system greatly, save the operating cost of cost of equipment and vavuum pump for the user.The present invention can be widely used in the pouring molten steel field of machinery and metallurgy industry.
Claims (5)
1, a kind of many ingots vacuum casting device, it is characterized in that: described many ingots vacuum casting device is provided with the chassis, ingot mould, vacuum tank, vacuum cover, the vacuum cover car, tundish, slide gate mechanism, the water conservancy diversion cover, hoisting mechanism, observation window, pump-line, vacuum pump system, main vacuum valve, air valve, the chassis is installed in the vacuum tank, ingot mould is installed on the chassis, vacuum cover is connected with hoisting mechanism on being installed in the vacuum cover car, vacuum tank, vacuum cover, tundish, slide gate mechanism is formed an enclosed vacuum chamber, slide gate mechanism is installed on the tundish, the water conservancy diversion cover, observation window is installed on the vacuum cover, slide gate mechanism, water conservancy diversion cover and several ingot moulds are interconnected, main vacuum valve, air valve is installed on the pump-line, pump-line and vacuum tank, vacuum pump system connects.
2, many ingots vacuum casting device according to claim 1 is characterized in that: 5 ingot moulds are installed in the vacuum tank, are interconnected between 5 ingot moulds and shared 1 chassis.
3, many ingots vacuum casting device according to claim 1 is characterized in that: vacuum cover is suspended on vacuum cover car below, by lift mechanism lifts or put down vacuum cover.
4, many ingots vacuum casting device according to claim 1 and 2 is characterized in that: also be provided with isocon, several ingot moulds are interconnected by the isocon on the chassis.
5, a kind ofly carry out the method for vacuum casting, it is characterized in that: may further comprise the steps with the described many ingots vacuum casting device of claim 1:
A, select ingot mould and chassis as requested, the isocon of shunting molten steel is installed on the chassis, require chassis, ingot mould, tundish, slide gate mechanism, water conservancy diversion cover are toasted, be heated to needed temperature according to baking process;
B, the chassis after will toasting are installed in the vacuum tank, and ingot mould is installed on the chassis, and slide gate mechanism is installed on the tundish;
C, the vacuum cover car is reached the vacuum tank position, cover on the vacuum tank vacuum cover closed by hoisting mechanism;
D, the water conservancy diversion cover is installed in the installing hole on the vacuum cover, tundish is hung on the vacuum cover closed, close the slide gate mechanism on the tundish;
E, start vacuum pump system by operation requirements, by pump-line vacuum chamber is vacuumized, after the vacuum in the vacuum tank reached below the 67Pa, the ladle that adopts driving will have molten steel hung above the tundish, and molten steel is put into tundish;
F, open slide gate mechanism, emit the molten steel in the tundish, in the ingot mould, the molten steel in the middle ingot mould was diverted to molten steel in other ingot mould by the isocon on the chassis in the middle of molten steel covered into through water conservancy diversion;
Observe the cast situation of molten steel in G, the casting process by observation window, when the molten steel in the ingot mould reaches the cast height, close slide gate mechanism, finish cast, and add the heat preserving agent insulation in surface of steel ingot;
H, close main vacuum valve, open air valve and make and recover atmospheric pressure in the vacuum tank, close vacuum pump system, hang away tundish, promote vacuum cover, the vacuum cover car is reached the standby station, the molten steel surface in ingot mould adds heat preserving agent again, and steel ingot is incubated;
After the molten steel cools in I, the ingot mould, will be with the ingot mould of steel ingot to hang the demoulding of demoulding station, the cleaning chassis be that cast is prepared next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100603126A CN101249559B (en) | 2008-04-03 | 2008-04-03 | Multiple ingot vacuum running castings device and method for vacuum running castings using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100603126A CN101249559B (en) | 2008-04-03 | 2008-04-03 | Multiple ingot vacuum running castings device and method for vacuum running castings using same |
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| Publication Number | Publication Date |
|---|---|
| CN101249559A true CN101249559A (en) | 2008-08-27 |
| CN101249559B CN101249559B (en) | 2011-02-16 |
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ID=39953252
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100603126A Active CN101249559B (en) | 2008-04-03 | 2008-04-03 | Multiple ingot vacuum running castings device and method for vacuum running castings using same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000804A (en) * | 2010-12-23 | 2011-04-06 | 浙江精一重工有限公司 | Vacuum casting machine |
| CN103008576A (en) * | 2012-12-11 | 2013-04-03 | 江苏永钢集团有限公司 | Steel ingot vacuum casting device |
| CN104084546A (en) * | 2014-07-25 | 2014-10-08 | 冬日耀 | Device for conducting interrupted vacuum pouring on heavy ingot through sliding nozzle ladles and special guiding pipes |
| CN105149552A (en) * | 2015-09-28 | 2015-12-16 | 江苏理工学院 | Split type fusion casting integrated equipment |
| CN105665660A (en) * | 2016-03-29 | 2016-06-15 | 中国重型机械研究院股份公司 | Vacuum pouring device and method for steel ladles of various capacities |
| CN111168035A (en) * | 2020-01-16 | 2020-05-19 | 青岛力晨新材料科技有限公司 | Pouring system and pouring process for stainless steel/carbon steel composite plate |
| CN113458382A (en) * | 2021-07-01 | 2021-10-01 | 西安昆仑工业（集团）有限责任公司 | Pressurizing casting equipment and process for casting gun steel |
-
2008
- 2008-04-03 CN CN2008100603126A patent/CN101249559B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000804A (en) * | 2010-12-23 | 2011-04-06 | 浙江精一重工有限公司 | Vacuum casting machine |
| CN102000804B (en) * | 2010-12-23 | 2012-08-29 | 浙江精一重工有限公司 | Vacuum casting machine |
| CN103008576A (en) * | 2012-12-11 | 2013-04-03 | 江苏永钢集团有限公司 | Steel ingot vacuum casting device |
| CN104084546A (en) * | 2014-07-25 | 2014-10-08 | 冬日耀 | Device for conducting interrupted vacuum pouring on heavy ingot through sliding nozzle ladles and special guiding pipes |
| CN104084546B (en) * | 2014-07-25 | 2017-01-11 | 冬日耀 | Device for conducting interrupted vacuum pouring on heavy ingot through sliding nozzle ladles and special guiding pipes |
| CN105149552A (en) * | 2015-09-28 | 2015-12-16 | 江苏理工学院 | Split type fusion casting integrated equipment |
| CN105665660A (en) * | 2016-03-29 | 2016-06-15 | 中国重型机械研究院股份公司 | Vacuum pouring device and method for steel ladles of various capacities |
| CN105665660B (en) * | 2016-03-29 | 2017-09-29 | 中国重型机械研究院股份公司 | A kind of different capabilities steel ladle vacuum casting device and method |
| CN111168035A (en) * | 2020-01-16 | 2020-05-19 | 青岛力晨新材料科技有限公司 | Pouring system and pouring process for stainless steel/carbon steel composite plate |
| CN113458382A (en) * | 2021-07-01 | 2021-10-01 | 西安昆仑工业（集团）有限责任公司 | Pressurizing casting equipment and process for casting gun steel |
| CN113458382B (en) * | 2021-07-01 | 2022-08-09 | 西安昆仑工业（集团）有限责任公司 | Pressurizing casting equipment and process for casting gun steel |
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| Publication number | Publication date |
|---|---|
| CN101249559B (en) | 2011-02-16 |
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Address after: Hangzhou City, Zhejiang province Yuhang District 311121 Thailand Street Xianqiao Road No. 2 Patentee after: ZHEJIANG HANGZHEN ENERGY TECHNOLOGY Co.,Ltd. Address before: Hangzhou City, Zhejiang province Yuhang District 311121 Thailand Street Xianqiao Road No. 2 Patentee before: Hangzhou Hangzhou vacuum engineering technology Limited by Share Ltd. Address after: Hangzhou City, Zhejiang province Yuhang District 311121 Thailand Street Xianqiao Road No. 2 Patentee after: Hangzhou Hangzhou vacuum engineering technology Limited by Share Ltd. Address before: Hangzhou City, Zhejiang province Yuhang District 311121 Thailand Street Xianqiao Road No. 2 Patentee before: HANGZHOU HANGZHEN VACUUM ENGINEERING TECHNOLOGY Co.,Ltd. |
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Assignee: HANGZHOU HANGZHEN VACUUM ENGINEERING TECHNOLOGY Co.,Ltd. Assignor: Hangzhou Xihu Vacuum Equipment Factory Contract record no.: 2012330000018 Date of cancellation: 20180611 |
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Application publication date: 20080827 Assignee: Zhejiang hang Zhen energy equipment manufacturing Co.,Ltd. Assignor: ZHEJIANG HANGZHEN ENERGY TECHNOLOGY Co.,Ltd. Contract record no.: 2018330000065 Denomination of invention: Multiple ingot vacuum running castings device and method for vacuum running castings using same Granted publication date: 20110216 License type: Common License Record date: 20180613 |
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Denomination of invention: Multi ingot vacuum casting device and method of vacuum casting using the device Granted publication date: 20110216 Pledgee: Hangzhou Yuhang Policy Financing Guarantee Co.,Ltd. Pledgor: ZHEJIANG HANGZHEN ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2024980031551 |
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