CN203887204U - Low-pressure holding furnace with continuous degassing function - Google Patents
Low-pressure holding furnace with continuous degassing function Download PDFInfo
- Publication number
- CN203887204U CN203887204U CN201420218874.XU CN201420218874U CN203887204U CN 203887204 U CN203887204 U CN 203887204U CN 201420218874 U CN201420218874 U CN 201420218874U CN 203887204 U CN203887204 U CN 203887204U
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- China
- Prior art keywords
- inert gas
- furnace wall
- pressure
- ingress pipe
- burner hearth
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000007872 degassing Methods 0.000 title claims abstract description 21
- 239000011261 inert gas Substances 0.000 claims abstract description 71
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 49
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000011449 brick Substances 0.000 claims abstract description 21
- 239000004411 aluminium Substances 0.000 claims description 42
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 11
- 239000002893 slag Substances 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 32
- 230000009286 beneficial effect Effects 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000505 pernicious effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000009182 swimming Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010943 off-gassing Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model realizes a low-pressure holding furnace with a continuous degassing function. The low-pressure holding furnace comprises a furnace body and an upper plate; the upper plate is fixed at the upper end of the furnace body; the furnace body comprises a furnace wall and a hearth arranged in the furnace wall; a lift pipe is arranged on the upper plate; one end of the lift pipe penetrates through the upper plate and is inserted in the hearth; an aluminum adding opening communicated with the hearth is formed in the furnace wall; an aluminum adding furnace door for sealing the an aluminum adding opening is arranged at the an aluminum adding opening; a compressed air intake/exhaust pipe is arranged on the furnace wall so that the hearth is communicated with the outside of the hearth; degassing bricks are inlaid in the furnace wall under the hearth; an inert gas ingress pipe is arranged in the furnace wall; one end of the inert gas ingress pipe is communicated with the degassing bricks, while the other end of the inert gas ingress pipe extends out of the furnace body and is connected with an insert gas adder; a reducing valve which is connected with one end, extending out of the furnace body, of the inert gas ingress pipe is used for blowing an inert gas into the molten aluminum in the hearth and the harmful gases absorbed in the molten aluminum and secondary oxidation slag inclusion materials are removed by use of the principle of a floatation method, and therefore, the quality of the molten aluminum and even castings can be improved.
Description
Technical field
The utility model relates to Low Pressure Casting Technology field, relates in particular to the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy.
Background technology
Aluminium alloy is commonly used in Aeronautics and Astronautics, weapons, automobile industry because of its good casting character and mechanical performance.The general principle of aluminum alloy low-pressure casting is, in airtight aluminium liquid holding furnace, pass into the compressed air of certain pressure, act on the aluminium liquid liquid level of uniform temperature, make aluminium liquid enter from bottom to up die cavity along stalk, be full of after type until aluminium liquid, increase air pressure, aluminium liquid solidification forming under certain pressure effect in die cavity, then removes the gas pressure on liquid level, in stalk, not solidified aluminium liquid falls back in holding furnace, then open form pickup.Above operation principle can cause aluminium liquid to absorb a large amount of hydrogen and produce secondary oxidation slag inclusion thing: 1, repeatedly add compressed air, airborne moisture can be absorbed by aluminium liquid, and in aluminium liquid, air content, also along with increase, is the root that foundry goods produces needle pore defect; 2, each foundry goods needs aluminium liquid rising liquid, fall back to the process in holding furnace in stalk, and aluminium liquid washing away repeatedly in stalk, produces a large amount of secondary oxidation slag inclusion things, and this is the root that has oxide slag inclusion thing in foundry goods.Because aluminium alloy aluminium liquid has air-breathing characteristic, in low-voltage temperature-keeping stove is repeated to add compressed-air actuated process and in aluminium liquid insulating process, can absorb a large amount of gas, at the position of the larger position of casting section thickness and final set, form the defect of a large amount of pin holes, needle pore defect seriously slackens the mechanical performance of foundry goods, the seepage that also can cause foundry goods, finally causes scrapping of foundry goods.The stalk of air injection machine is in the pressurization repeating, stress-relief process, the secondary oxidation slag inclusion thing of aluminium liquid constantly increases, in foundry goods, there is oxide slag inclusion thing, can cause that metal structure is discontinuous, casting leakage become the harm such as the root of hot spot, also obviously reduce the mechanical performance of foundry goods, finally also can cause foundry goods to be scrapped.
Utility model content
Technical problem to be solved in the utility model is to provide the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy, in the casting process of aluminium alloy, removes the pernicious gas and the secondary oxidation slag inclusion thing that suck in aluminium liquid, thereby improves the quality of aluminium liquid and foundry goods.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy, comprise body of heater and upper plate, described upper plate is fixedly connected on the upper end of described body of heater, described body of heater comprises furnace wall and is arranged on the burner hearth in described furnace wall, on described upper plate, be circumscribed with stalk, insert in described burner hearth through described upper plate one end of described stalk, the side of described furnace wall be provided be communicated with described burner hearth add aluminium mouth, described add aluminium mouth place be provided with add aluminium mouth described in blocking add aluminium fire door, described furnace wall is provided with the compressed air air inlet-outlet pipe that is communicated with described burner hearth and described body of heater external environment, (described deaerated brick refers to mullite fragment of brick in furnace wall below described burner hearth, to be inlaid with deaerated brick near burner hearth place, the content of its alundum (Al2O3) is greater than/equals 77%, apparent porosity is less than/equals 27%, there is high compressive resistance, high air penetrability), in described furnace wall, be provided with inert gas ingress pipe, one end of described inert gas ingress pipe is connected with described deaerated brick, the other end of described inert gas ingress pipe stretches out outside described body of heater and is connected with inert gas filling machine.
The beneficial effects of the utility model: deaerated brick is set in the furnace wall being positioned at below burner hearth, in furnace wall, be provided with the inert gas ingress pipe being communicated with outside deaerated brick and body of heater, in the time of low pressure casting, the pressure-reducing valve that stretches out one end of body of heater by connecting inert gas ingress pipe is blown into inert gas in the aluminium liquid in burner hearth, such as nitrogen, argon gas etc., remove the pernicious gas and the secondary oxidation slag inclusion thing that suck in aluminium liquid by the ratio juris of swimming, thereby promote the quality of aluminium liquid and foundry goods.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described inert gas filling machine comprises pressure-reducing valve and inert gas gas cylinder, and the gas outlet of described inert gas gas cylinder connects the air inlet of described pressure-reducing valve, and the gas outlet of described pressure-reducing valve connects described inert gas ingress pipe.
Adopt the beneficial effect of above-mentioned further scheme to be: arranging of pressure-reducing valve can meet as required the too outgassing rate of rhizoma nelumbinis inert gas.
Further, described inert gas ingress pipe is arranged in the furnace wall of described burner hearth below.
Adopt the beneficial effect of above-mentioned further scheme to be: because deaerated brick is arranged in the furnace wall of burner hearth below, and the gas outlet, one end of inert gas ingress pipe need to arrange connection deaerated brick, inert gas ingress pipe is arranged in the furnace wall of burner hearth below and can effectively reduces the length of inert gas ingress pipe, thereby reduce body of heater difficulty during fabrication.
Further, between described pressure-reducing valve and described inert gas ingress pipe, be provided with proportioning valve and pressure transmitter, the both ends open of described proportioning valve connects respectively the gas outlet of described pressure-reducing valve and the air inlet of described pressure transmitter, and the gas outlet of described pressure transmitter is connected with described inert gas ingress pipe by wire.
Adopt the beneficial effect of above-mentioned further scheme to be: proportioning valve and pressure transmitter the output pressure that can regulate as required pressure-reducing valve is set, make this device more effectively to carry out degasification and slagging-off to aluminium liquid.
Further, described proportioning valve is all connected PLC controller with described pressure transmitter, and described PLC controller is for regulating the flow that passes through of described proportioning valve, the pressure signal of carrying for receiving described pressure transmitter.
Adopt the beneficial effect of above-mentioned further scheme to be: PLC controller connects respectively proportioning valve and pressure transmitter, receive the pressure signal that described pressure transmitter is carried, more intuitively, understand exactly the air pressure that enters the inert gas in burner hearth, facilitate the control of comparative example valve output pressure, improve degasification, slagging-off efficiency.
Further, in described burner hearth, be provided with pressure detector, described pressure detector is connected with described PLC controller by wire, and described PLC controller receives the pressure signal that described pressure detector is carried.
Adopt the beneficial effect of above-mentioned further scheme to be: pressure detector is set in burner hearth, and pressure detector connects described PLC controller, can understand more easily the air pressure in burner hearth.
Brief description of the drawings
Fig. 1 is the cutaway view of the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy of the utility model, and the body of heater external equipment of accompanying drawing mesolow holding furnace does not show;
Fig. 2 is the A-A face cutaway view in Fig. 1 of low-voltage temperature-keeping stove of the continuous degasification of a kind of energy of the utility model.
In accompanying drawing, the list of parts of each label representative is as follows:
1, body of heater, 2, upper plate, 3, furnace wall, 4, burner hearth, 5, stalk, 6, add aluminium mouth, 7, add aluminium fire door, 8, compressed air air inlet-outlet pipe, 9, deaerated brick, 10, inert gas ingress pipe, 11, pressure-reducing valve, 12, inert gas gas cylinder, 13, proportioning valve, 14, pressure transmitter, 15, PLC controller, 16, pressure detector.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As Fig. 1, shown in Fig. 2, the utility model comprises body of heater 1 and upper plate 2, described upper plate 2 is fixedly connected on the upper end of described body of heater 1, described body of heater 1 comprises furnace wall 3 and is arranged on the burner hearth 4 in described furnace wall 3, on described upper plate 2, be circumscribed with stalk 5, one end of described stalk 5 is passed down through described upper plate 2 and inserts in described burner hearth 4, the sidewall of described furnace wall 3 be provided be communicated with described burner hearth 4 add aluminium mouth 6, described add aluminium mouth 6 places be provided with add aluminium mouth 6 described in blocking add aluminium fire door 7, described furnace wall 3 is provided with the compressed air air inlet-outlet pipe 8 that is communicated with described burner hearth 4 and described body of heater 1 external environment, interior close burner hearth 4 places, furnace wall 3 below described burner hearth 4 are inlaid with deaerated brick 9, in described furnace wall 3, be provided with inert gas ingress pipe 10, one end of described inert gas ingress pipe 10 is connected with described deaerated brick 9, the other end of described inert gas ingress pipe 10 stretches out outside described body of heater 1 and is connected with inert gas filling machine.Described inert gas filling machine comprises pressure-reducing valve 11 and inert gas gas cylinder 12, and the gas outlet of described inert gas gas cylinder 12 connects the air inlet of described pressure-reducing valve 11, and the gas outlet of described pressure-reducing valve 11 connects described inert gas ingress pipe 10.
Described inert gas ingress pipe 10 is arranged in the furnace wall 3 of described burner hearth 4 belows.Between described pressure-reducing valve 11 and described inert gas ingress pipe 10, be provided with proportioning valve 13 and pressure transmitter 14, the both ends open of described proportioning valve 13 connects respectively the gas outlet of described pressure-reducing valve 11 and the air inlet of described pressure transmitter 14, and the gas outlet of described pressure transmitter 14 connects described inert gas ingress pipe 10.Described proportioning valve 13 is all connected described PLC controller 15 with described pressure transmitter 14, and described PLC controller 15 is for regulating the flow that passes through of described proportioning valve 13, the pressure signal of carrying for receiving described pressure transmitter 14.In described burner hearth 4, be provided with pressure detector 16, described pressure detector 16 connects described PLC controller 15, and described PLC controller 15 receives the pressure signal that described pressure detector 16 is carried.
When holding furnace is made, deaerated brick 9 is embedded in to furnace bottom, then inert gas ingress pipe 10 (preferably adopting heat-resistance stainless steel material) is connected, stand-by entrance sealing, having foreign matter to fall into can not in pipeline; Start stokehold, the inert gas piping outside stove is connected, confirm without gas leak phenomenon; Inert gas need with flow and pressure parameter be input in touch-screen, and then by the control system of inert gas control, inert gas is continuously blown in burner hearth 4 aluminium liquid, reach the function of degasification in stove, slagging-off.
The utility model is by being embedded in the interior deaerated brick 9 in furnace wall 3 of below of burner hearth 4, inert gas ingress pipe 10 roads and be arranged on the inert gas filling machine of body of heater 1 outside, control by PLC controller 15 to inert gas air-blowing quantity, in liquid pressure process, add isobaric inert gas rising simultaneously, in the time of body of heater 1 release, control by PLC controller 15 inert gas that adds the tiny pressure being evenly distributed of bubble and flow again, like this aluminium liquid in stove is continuously blown into inert gas, by the ratio juris of swimming, remove the pernicious gas and the secondary oxidation slag inclusion thing that suck in aluminium liquid and (in aluminium alloy, have individual term, i.e. gas Ex-all, slag must be clearly), improve the quality of aluminium liquid and foundry goods.
Inert gas control principle explanation: 1, touch-screen set data on flows, again by PLC controller 15 output pressures and flow signal; 2, by inert gas gas cylinder 12 pressure through pressure-reducing valve 11, while reducing to casting, burner hearth 4 is added the data of compressed-air actuated boost pressure, the instruction of passing through PLC controller 15 output pressures and flow is again through proportioning valve 13, through pressure transmitter 14, the pressure feedback of detection is revised and exported to PLC controller 15 again, be connected with inert gas ingress pipe 10 road connectors with inert gas again, detect that by built-in burner hearth 4 pressure detecting of burner hearth 4 the pressure variation of casting process feeds back to PLC controller 15, revises a closed-loop control system of output again by PLC controller 15 again.The control program of the utility model PLC controller is existing known technology, the numerical value that only needs input to set in the enforcement of this device.
The utility model be positioned at burner hearth 4 below furnace wall 3 deaerated brick 9 is set, in furnace wall 3, be provided with the inert gas ingress pipe 10 being communicated with outside deaerated brick 9 and body of heater 1, in the time of low pressure casting, the pressure-reducing valve 11 that stretches out one end of body of heater 1 by connecting inert gas ingress pipe 10 is blown into inert gas in the aluminium liquid in burner hearth 4, such as nitrogen, argon gas etc., remove the pernicious gas and the secondary oxidation slag inclusion thing that suck in aluminium liquid by the ratio juris of swimming, thereby promote the quality of aluminium liquid and foundry goods.Arranging of pressure-reducing valve 11 can meet as required the too outgassing rate of rhizoma nelumbinis inert gas, because deaerated brick 9 is arranged in the furnace wall 3 of burner hearth 4 belows, and the gas outlet, one end of inert gas ingress pipe 10 need to arrange connection deaerated brick 9, inert gas ingress pipe 10 is arranged on to the furnace wall 3 of burner hearth 4 belows is interior can reduce the length of inert gas ingress pipe 10 effectively, thereby reduces body of heater 1 difficulty during fabrication.Proportioning valve 13 and pressure transmitter 14 the output pressure that can regulate as required pressure-reducing valve 11 is set, make this device more effectively to carry out degasification and slagging-off to aluminium liquid.PLC controller 15 connects respectively proportioning valve 13 and pressure transmitter 14, receive the pressure signal that described pressure transmitter 14 is carried, understand the air pressure that enters the inert gas in burner hearth 4 more intuitively, exactly, facilitate the control of comparative example valve 13 output pressures, improve degasification, slagging-off efficiency.The interior pressure detector 16 that arranges of burner hearth 4, pressure detector 16 connects described PLC controller 15, can understand more easily the air pressure in burner hearth 4.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. the low-voltage temperature-keeping stove of the continuous degasification of energy, comprise body of heater (1) and upper plate (2), described upper plate (2) is fixedly connected on the upper end of described body of heater (1), described body of heater (1) comprises furnace wall (3) and is arranged on the burner hearth (4) in described furnace wall (3), on described upper plate (2), be circumscribed with and be provided with stalk, one end of described stalk is passed down through described upper plate (2) and inserts the interior stalk of described burner hearth (4) (5), the side of described furnace wall (3) be provided be communicated with described burner hearth (4) add aluminium mouth (6), described add aluminium mouth (6) locate to be provided with add aluminium mouth (6) described in blocking add aluminium fire door (7), described furnace wall (3) is provided with the compressed air air inlet-outlet pipe (8) that is communicated with described burner hearth (4) and body of heater (1) external environment, it is characterized in that, deaerated brick (9) is located to be inlaid with near burner hearth (4) in furnace wall (3) in described burner hearth (4) below, in described furnace wall (3), be provided with inert gas ingress pipe (10), one end of described inert gas ingress pipe (10) is connected with described deaerated brick (9), the other end of described inert gas ingress pipe (10) stretches out outside described body of heater (1) and is connected with inert gas filling machine.
2. the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy according to claim 1, it is characterized in that, described inert gas filling machine comprises pressure-reducing valve (11) and inert gas gas cylinder (12), the gas outlet of described inert gas gas cylinder (12) connects the air inlet of described pressure-reducing valve (11), and the gas outlet of described pressure-reducing valve (11) connects described inert gas ingress pipe (10).
3. the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy according to claim 1 and 2, is characterized in that, described inert gas ingress pipe (10) is arranged in the furnace wall (3) of described burner hearth (4) below.
4. the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy according to claim 2, it is characterized in that, between described pressure-reducing valve (11) and described inert gas ingress pipe (10), be provided with proportioning valve (13) and pressure transmitter (14), the both ends open of described proportioning valve (13) connects respectively the gas outlet of described pressure-reducing valve (11) and the air inlet of described pressure transmitter (14), and the gas outlet of described pressure transmitter (14) connects described inert gas ingress pipe (10).
5. the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy according to claim 4, is characterized in that, described proportioning valve (13) is all connected with PLC controller (15) by wire with described pressure transmitter (14).
6. the low-voltage temperature-keeping stove of the continuous degasification of a kind of energy according to claim 5, it is characterized in that, in described burner hearth (4), be provided with pressure detector (16), described pressure detector (16) is connected with described PLC controller (15) by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218874.XU CN203887204U (en) | 2014-04-30 | 2014-04-30 | Low-pressure holding furnace with continuous degassing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420218874.XU CN203887204U (en) | 2014-04-30 | 2014-04-30 | Low-pressure holding furnace with continuous degassing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203887204U true CN203887204U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420218874.XU Expired - Fee Related CN203887204U (en) | 2014-04-30 | 2014-04-30 | Low-pressure holding furnace with continuous degassing function |
Country Status (1)
| Country | Link |
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| CN (1) | CN203887204U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874767A (en) * | 2015-06-25 | 2015-09-02 | 成都富江机械制造有限公司 | Multi-pipeline low-pressure and counter-pressure casting process and device |
| CN105436473A (en) * | 2016-01-12 | 2016-03-30 | 保定安保能冶金设备有限公司 | Energy-saving environment-friendly low-pressure die-casting machine heat-preserving furnace |
| CN109136587A (en) * | 2018-09-13 | 2019-01-04 | 洛阳新远大冶金成套设备有限公司 | Molten aluminum degasification is for pneumatic control method, device, system and computer storage medium |
| CN109240158A (en) * | 2018-09-13 | 2019-01-18 | 洛阳新远大冶金成套设备有限公司 | Control method, system, device and the storage medium of molten aluminum stirring rotator |
| CN115597373A (en) * | 2022-10-12 | 2023-01-13 | 中国兵器装备集团西南技术工程研究所（Cn） | Smelting furnace with multi-layer composite heat-insulation structure |
-
2014
- 2014-04-30 CN CN201420218874.XU patent/CN203887204U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874767A (en) * | 2015-06-25 | 2015-09-02 | 成都富江机械制造有限公司 | Multi-pipeline low-pressure and counter-pressure casting process and device |
| CN104874767B (en) * | 2015-06-25 | 2017-06-06 | 成都富江机械制造有限公司 | Multi-pipeline low pressure, counter-pressure casting technique and its equipment |
| CN105436473A (en) * | 2016-01-12 | 2016-03-30 | 保定安保能冶金设备有限公司 | Energy-saving environment-friendly low-pressure die-casting machine heat-preserving furnace |
| CN109136587A (en) * | 2018-09-13 | 2019-01-04 | 洛阳新远大冶金成套设备有限公司 | Molten aluminum degasification is for pneumatic control method, device, system and computer storage medium |
| CN109240158A (en) * | 2018-09-13 | 2019-01-18 | 洛阳新远大冶金成套设备有限公司 | Control method, system, device and the storage medium of molten aluminum stirring rotator |
| CN115597373A (en) * | 2022-10-12 | 2023-01-13 | 中国兵器装备集团西南技术工程研究所（Cn） | Smelting furnace with multi-layer composite heat-insulation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20170430 |