CN111618283B - Molten aluminum smelting furnace for casting - Google Patents
Molten aluminum smelting furnace for casting Download PDFInfo
- Publication number
- CN111618283B CN111618283B CN202010331139.XA CN202010331139A CN111618283B CN 111618283 B CN111618283 B CN 111618283B CN 202010331139 A CN202010331139 A CN 202010331139A CN 111618283 B CN111618283 B CN 111618283B
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- casting
- furnace
- pipe
- gas
- heat preservation
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 57
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000005266 casting Methods 0.000 title claims abstract description 51
- 238000003723 Smelting Methods 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 31
- 238000004321 preservation Methods 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 22
- 230000008018 melting Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 abstract description 12
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/001—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like devices for cleaning ladles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention belongs to the technical field of casting, and mainly relates to an aluminum liquid smelting furnace for casting, which comprises a heat preservation furnace and a smelting furnace, the melting furnace is arranged in the heat preservation furnace, the upper part of the melting furnace is provided with a spray head, the spray head is connected with a gas pipe, a plurality of nozzles are arranged on the spray head, an isolation cover is arranged at the top end of the smelting furnace, the spray head is positioned in the isolation cover, the heat preservation furnace is internally provided with a mounting groove, the gas pipe is positioned in the mounting groove, one end of the gas pipe is connected with the spray head, the other end of the gas pipe penetrates out of the heat preservation furnace, the gas pipe positioned in the mounting groove is spirally arranged, the gas delivery pipe is a high-temperature resistant metal pipe, a high-temperature resistant metal cylinder is integrally formed on the gas delivery pipe and is positioned in the mounting groove, the gas transmission pipe is spirally and annularly arranged on the outer wall of the high-temperature-resistant metal cylinder, and can collect the aluminum liquid dripped on the surface of the casting ladle, so that the waste of raw materials and the environmental pollution caused by dripping on the ground are avoided.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to an aluminum liquid smelting furnace for casting.
Background
The piston is one of the basic parts of the engine, and is the heart of the engine. At present, automobile pistons are developing towards high strength, high wear resistance, high precision, low expansion, light weight and structural combination. In the production process, on one hand, more and more processes are needed to be completed when the piston is cast, and the processes comprise steel sheet inlaying, wear-resistant inlaying ring inlaying, salt core placing and the like; on the other hand, the piston structure becomes more and more complicated due to the demand for weight reduction of the piston, and the requirements for the production process become more and more stringent.
The prior automatic casting equipment adopts a mechanical arm to drive a casting ladle to contain and take aluminum liquid, and then the contained and taken aluminum liquid is poured into a mould to complete casting. Because the ladle is directly immersed into the melting furnace to contain the aluminum liquid, the aluminum liquid is attached to the outer wall of the ladle, and in the process of moving the mechanical arm, the aluminum liquid attached to the surface of the ladle is easy to drip on the ground or casting equipment, which wastes raw materials and causes environmental pollution easily.
Disclosure of Invention
Based on the problems mentioned in the background art, the invention provides an aluminum liquid smelting furnace for casting, which can collect aluminum liquid dripped on the surface of a ladle and avoid the waste of raw materials and the environmental pollution caused by dripping on the ground.
The technical scheme adopted by the invention is as follows:
the molten aluminum smelting furnace for casting comprises a heat preservation furnace and a smelting furnace, wherein the smelting furnace is arranged in the heat preservation furnace, a spray head is arranged at the upper part of the smelting furnace, the spray head is connected with a gas conveying pipe, and a plurality of nozzles are arranged on the spray head.
In the technical scheme, the invention is further improved as follows:
furthermore, an isolation hood is installed at the top end of the smelting furnace, the spray head is located in the isolation hood, and molten aluminum falling off from the casting ladle can be blocked by the isolation hood when the outside of the casting ladle is subjected to injection, so that the personal safety of workers is prevented from being harmed by molten aluminum splashing, and meanwhile, the working environment is prevented from being polluted.
Furthermore, a mounting groove is formed in the heat preservation furnace, the gas pipe is located in the mounting groove, one end of the gas pipe is connected with the spray head, and the other end of the gas pipe penetrates out of the heat preservation furnace. The gas passing through the gas conveying pipe can be rapidly heated in a high-temperature environment, so that the problem that the casting molding is influenced by the fact that the temperature of the molten aluminum in the ladle is reduced and the physical performance of the molten aluminum is changed due to the fact that the temperature of the gas blown out by the spray head is low is avoided.
Further, the gas transmission pipe in the mounting groove is spirally arranged. The flowing time of the gas in the furnace is increased, so that the gas can be heated better to increase the temperature.
Further, the gas-supply pipe is a high temperature resistant metal pipe, the smelting pot is sleeved with a high temperature resistant metal cylinder, the gas-supply pipe and the high temperature resistant metal cylinder are integrally formed, the high temperature resistant metal cylinder is located in the mounting groove, and the gas-supply pipe is spirally arranged on the outer wall of the high temperature resistant metal cylinder. The heating area is increased through the high-temperature-resistant metal cylinder, the temperature of the gas conveying pipe is improved through heat transfer, and the gas in the gas conveying pipe can be heated and heated more quickly.
Furthermore, integrated into one piece has three blast pipe on the gas-supply pipe, and the blast pipe is metal collapsible tube, the quantity of shower nozzle is three, three the shower nozzle is installed respectively on three blast pipe, and adjacent the distance between the shower nozzle is the same. Through jetting the ladle from different angles, the outer wall to the ladle that can be more thorough is cleared up.
Furthermore, the nozzles on the spray head are all arranged in a downward inclination mode, and the inclination angle is 10-15 degrees. Can better avoid the aluminum liquid dropped from the surface of the casting ladle from flying out of the shielding case during blowing.
Further, the smelting furnace comprises an integrally formed furnace body and a positioning ring, the furnace body is located in the heat preservation furnace, the positioning ring is located at the top end of the heat preservation furnace, and a preformed groove corresponding to the exhaust pipe is formed in the positioning ring. Through the preformed groove, the exhaust pipe is pulled outwards along the preformed groove when the smelting furnace is dismantled, so that the limitation of the exhaust pipe on the dismantling of the smelting furnace is avoided.
Further, the cage includes integrated into one piece's solid fixed ring and annular cover, gu set up on the fixed ring with position circle assorted fixed slot, the position circle is located the fixed slot, gu fixed ring is fixed in the top of heat preservation stove. The isolation cover can fix the smelting furnace through the fixing groove while preventing the molten aluminum from splashing out.
Further, an integrally formed baffle is arranged on the exhaust pipe, the bottom of the baffle is attached to the inner wall of the annular cover and the positioning ring, the reserved groove is shielded by the baffle, and scattered aluminum liquid is prevented from splashing into a gap between the exhaust pipe and the reserved groove.
The invention has the beneficial effects that:
1. the casting manipulator drives the ladle to hold and take the aluminum liquid and then rises to separate from the aluminum liquid smelting furnace, the casting manipulator is enabled to stay for a short time when reaching the corresponding height of the nozzle in the separation process by modifying stroke parameters of the casting manipulator, high-pressure gas is injected into the casting manipulator through the gas delivery pipe and is sprayed out of the ladle through the nozzle to blow off the aluminum liquid attached to the outside of the ladle, and the situation that the aluminum liquid drops on the ground or casting equipment due to the aluminum liquid attached to the outside of the ladle when the casting manipulator drives the ladle to move, raw materials are wasted, and meanwhile, environmental pollution is easily caused is avoided;
2. the gas transmission pipe is partially positioned in the molten aluminum furnace, so that the gas passing through the gas transmission pipe can be rapidly heated in a high-temperature environment, and the condition that the temperature of the gas blown out by the nozzle is low, so that the temperature of the molten aluminum in the ladle is reduced, the physical property of the molten aluminum is changed, and the casting molding is influenced is avoided.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic longitudinal sectional view of an embodiment of a molten aluminum melting furnace for casting according to the present invention;
FIG. 2 is a schematic cross-sectional structure view of an embodiment of an aluminum liquid melting furnace for casting according to the present invention;
FIG. 3 is a schematic structural distribution diagram of gas transmission pipes and nozzles in an embodiment of an aluminum liquid melting furnace for casting according to the present invention;
FIG. 4 is a schematic structural diagram of a furnace in an embodiment of the molten aluminum furnace for casting of the present invention;
FIG. 5 is a schematic longitudinal sectional view of a shield in an embodiment of the molten aluminum melting furnace for casting according to the present invention;
the main element symbols are as follows:
the device comprises a heat preservation furnace 1, a mounting groove 11, a smelting furnace 12, a furnace body 121, a positioning ring 122, a preformed groove 123, a mechanical arm 21, a ladle 22, an isolation cover 3, an annular cover 31, a fixing ring 32, a fixing groove 33, a gas pipe 41, a high-temperature resistant metal cylinder 42, a gas exhaust pipe 43, a spray head 44 and a baffle plate 45.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1 to 5, the molten aluminum melting furnace for casting of the invention comprises a heat preservation furnace 1 and a melting furnace 12, wherein the melting furnace 12 is installed in the heat preservation furnace 1, the upper part of the melting furnace 12 is provided with a spray head 44, the spray head 44 is connected with a gas transmission pipe 41, the spray head 44 is provided with a plurality of nozzles, high-pressure gas is injected into the spray head 44 through the gas transmission pipe 41 and is sprayed out of the ladle 22 through the spray head 44 to blow off the molten aluminum attached to the outside of the ladle 22, so that the molten aluminum attached to the outside of the ladle 22 is prevented from being blown off due to the molten aluminum attached to the outside of the ladle 22 when a casting manipulator drives the ladle 22 to move, the molten aluminum drops fall on the ground or casting equipment, the raw materials are wasted, and the environmental pollution is easily caused, the isolation hood 3 is installed at the top end of the melting furnace 12, the spray head 44 is located in the isolation hood 3, the molten aluminum dropped off from the ladle 22 can be blocked through the isolation hood 3 when the outside of the ladle 22 is blown, the molten aluminum is prevented from splashing and the personal safety of workers, and simultaneously avoids polluting the working environment.
Specifically, set up mounting groove 11 in heat preservation stove 1, gas-supply pipe 41 is located mounting groove 11, gas-supply pipe 41 one end is connected with shower nozzle 44, the other end wears out heat preservation stove 1, can make the gas through gas-supply pipe 41 can heat up under high temperature environment fast, thereby it is lower to avoid the gas temperature that shower nozzle 44 blew out, it changes its physical properties and influences the casting shaping to lead to the interior aluminium liquid temperature reduction of ladle, wherein, the gas-supply pipe 41 that is located mounting groove 11 is spiral setting, increase the flow time of gas in the smelting pot, make the better intensification of being heated of gas ability, for the gaseous intensification of being heated that can be faster in making gas-supply pipe 41, gas-supply pipe 41 is high temperature resistant tubular metal resonator. Smelting pot 12 overcoat is equipped with high temperature resistant metal cylinder 42, gas-supply pipe 41 and high temperature resistant metal cylinder 42 integrated into one piece, and high temperature resistant metal cylinder 42 is located mounting groove 11, and the outer wall of high temperature resistant metal cylinder 42 is located to the gas-supply pipe 41 spiral ring, through high temperature resistant metal cylinder 42 increase heated area, improves the temperature of gas-supply pipe 41 through the heat transfer to accelerate the gaseous intensification rate in the gas-supply pipe 41.
Specifically, three exhaust pipes 43 are connected to the gas pipe 41, the exhaust pipes 43 are metal hoses, the number of the spray heads 44 is three, the three spray heads 44 are respectively mounted on the three exhaust pipes 43, and the three spray heads 44 are uniformly distributed on the outer circumference of the melting furnace 12. Through jetting ladle 22 from different angles, can be more thorough clear up ladle 22's outer wall, wherein, the equal downward sloping setting of nozzle on the shower nozzle 44, the angle of inclination is 12, can be better avoid by ladle 22 aluminium liquid fly-off cage 3 that the surface dropped.
Specifically, smelting pot 12 includes integrated into one piece's furnace body 121 and position circle 122, and furnace body 121 is located heat preservation stove 1, and position circle 122 is located heat preservation stove 1's top, offers the reservation groove 123 corresponding with blast pipe 43 on the position circle 122, and blast pipe 43 wears to establish in reservation groove 123, makes smelting pot 12 through reservation groove 123 with blast pipe 43 along the outside pulling of reservation groove 123 when demolising to avoid blast pipe 43 to cause the restriction to the demolishment of smelting pot 12.
Specifically, the isolation hood 3 includes an integrally formed fixing ring 32 and an annular hood 31, a fixing groove 33 matched with the positioning ring 122 is formed on the fixing ring 32, the positioning ring 122 is located in the fixing groove 33, and the fixing ring 32 is fixed at the top end of the holding furnace 1, so that the isolation hood 3 can fix the melting furnace 12 through the fixing groove 33 while preventing molten aluminum from splashing out.
Specifically, the exhaust pipe 43 is integrally formed with the baffle 45, the bottom of the baffle 45 is attached to the inner wall of the annular cover 31 and the positioning ring 122, the preformed groove 123 is shielded by the baffle 45, and scattered aluminum liquid is prevented from splashing into a gap between the exhaust pipe 43 and the preformed groove 123.
Firstly, modifying stroke parameters of a casting manipulator to enable the casting manipulator to temporarily stay when the casting manipulator reaches a height corresponding to a spray head 44 in a separation process, and when a ladle 22 stays, the height dimension of the top end of the ladle 22 is larger than the height dimension of a spray head 14, so that high-pressure gas blown out from the spray head 44 is prevented from being directly blown into the ladle 22, meanwhile, one end of a gas pipe 41 penetrating out of a heat preservation furnace 1 is connected with an inflation device, when casting is carried out, a mechanical arm 21 moves to drive the ladle 22 to move into a smelting furnace 12 to contain aluminum liquid, then the mechanical arm 21 drives the ladle 22 to separate from the smelting furnace 12, when the ladle 22 reaches a preset stay height, the mechanical arm 21 temporarily stays and starts the inflation device to inject gas into the gas pipe 41, the high-pressure gas is conveyed and heated in the gas pipe 41, finally the high-pressure gas is sprayed out of the spray head 44 to spray the outside of the ladle 22, so that the aluminum liquid attached to the outside of the ladle 22 can be blown down, and the situation that the casting manipulator is prevented that the aluminum liquid is attached to the outside of the ladle 22 when the ladle 22 is driven to move, the molten aluminum is dropped on the ground or casting equipment, raw materials are wasted, meanwhile, environmental pollution is easily caused, and after blowing is finished, the mechanical arm 21 drives the casting ladle 22 to be separated from the annular cover 31 for casting.
The molten aluminum smelting furnace for casting provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a molten aluminum smelting pot for casting, includes heat preservation stove (1) and smelting pot (12), smelting pot (12) are installed in heat preservation stove (1), its characterized in that: smelting pot (12) upper portion is equipped with shower nozzle (44), shower nozzle (44) are connected with gas-supply pipe (41), be equipped with a plurality of nozzles on shower nozzle (44), cage (3) are installed on smelting pot (12) top, shower nozzle (44) are located cage (3), set up mounting groove (11) in heat preservation stove (1), gas-supply pipe (41) are located mounting groove (11), and gas-supply pipe (41) one end is connected with shower nozzle (44), heat preservation stove (1) is worn out to the other end, and the in-process ladle (22) that casting manipulator drove ladle (22) and breaks away from smelting pot (12) stops when shower nozzle (44) correspond the height for a short time.
2. The aluminum liquid melting furnace for casting as claimed in claim 1, wherein: the air delivery pipe (41) positioned in the mounting groove (11) is spirally arranged.
3. The aluminum liquid melting furnace for casting as claimed in claim 2, wherein: the gas transmission pipe (41) is a high-temperature-resistant metal pipe, a high-temperature-resistant metal cylinder (42) is sleeved outside the melting furnace (12), the gas transmission pipe (41) and the high-temperature-resistant metal cylinder (42) are integrally formed, the high-temperature-resistant metal cylinder (42) is located in the mounting groove (11), and the outer wall of the high-temperature-resistant metal cylinder (42) is spirally and annularly arranged on the gas transmission pipe (41).
4. The aluminum liquid melting furnace for casting as claimed in claim 3, wherein: three exhaust pipes (43) are integrally formed on the gas conveying pipe (41), the exhaust pipes (43) are metal hoses, the number of the spray heads (44) is three, the spray heads (44) are respectively arranged on the three exhaust pipes (43), and the distances between the spray heads (44) are the same.
5. The aluminum liquid melting furnace for casting as claimed in claim 4, wherein: the nozzles on the spray head (44) are all arranged in a downward inclined mode, and the inclination angle is 10-15 degrees.
6. The aluminum liquid melting furnace for casting as claimed in claim 5, wherein: the smelting furnace (12) comprises a furnace body (121) and a locating ring (122) which are integrally formed, the furnace body (121) is located in the heat preservation furnace (1), the locating ring (122) is located at the top end of the heat preservation furnace (1), a reserved groove (123) corresponding to the exhaust pipe (43) is formed in the locating ring (122), and the exhaust pipe (43) is located in the reserved groove (123).
7. The aluminum liquid melting furnace for casting as claimed in claim 6, wherein: the cage (3) comprises an integrally formed fixing ring (32) and an annular cover (31), a fixing groove (33) matched with a positioning ring (122) is formed in the fixing ring (32), the positioning ring (122) is located in the fixing groove (33), and the fixing ring (32) is fixed to the top end of the heat preservation furnace (1).
8. The aluminum liquid melting furnace for casting as claimed in claim 7, wherein: the exhaust pipe (43) is integrally formed with a baffle (45), and the bottom of the baffle (45) is attached to the inner wall of the annular cover (31) and the positioning ring (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331139.XA CN111618283B (en) | 2020-04-24 | 2020-04-24 | Molten aluminum smelting furnace for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010331139.XA CN111618283B (en) | 2020-04-24 | 2020-04-24 | Molten aluminum smelting furnace for casting |
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| Publication Number | Publication Date |
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| CN111618283A CN111618283A (en) | 2020-09-04 |
| CN111618283B true CN111618283B (en) | 2022-02-11 |
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| CN202010331139.XA Active CN111618283B (en) | 2020-04-24 | 2020-04-24 | Molten aluminum smelting furnace for casting |
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| CN114101626A (en) * | 2021-11-30 | 2022-03-01 | 张俊杰 | Full-automatic servo cast aluminum machine |
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| DE102014217534A1 (en) * | 2014-09-03 | 2016-03-03 | Volkswagen Aktiengesellschaft | Magnesium Melting Furnace, Operating Procedures and Magnesium Casting Plant |
| CN105950879A (en) * | 2016-07-06 | 2016-09-21 | 安徽宏泰模具有限公司 | Casting aluminum fluid descaling device |
| CN206550330U (en) * | 2017-03-11 | 2017-10-13 | 南京天翔机电有限公司 | Die casting machine aluminium material feedway |
| CN207272129U (en) * | 2017-10-16 | 2018-04-27 | 苟强强 | A kind of die casting machine with auto feed, feeding and cleaning device |
| CN109128119A (en) * | 2018-09-20 | 2019-01-04 | 北京东南汽车部件有限公司 | It casts barrel and infuses soup mouth molten aluminum remove device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20050539A1 (en) * | 2005-04-01 | 2006-10-02 | Techint Spa | METHOD AND APPARATUS FOR THE RECOVERY OF REFRACTORY MATERIALS OF RESULTS AND SORRIES FROM SIVIERA AS PROCESS SCORES IN STEEL PRODUCTION IN EAF AND ITS RELATED DOSAGE FOR THE FORMATION OF PROCESS SCORIA |
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2020
- 2020-04-24 CN CN202010331139.XA patent/CN111618283B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014217534A1 (en) * | 2014-09-03 | 2016-03-03 | Volkswagen Aktiengesellschaft | Magnesium Melting Furnace, Operating Procedures and Magnesium Casting Plant |
| CN104907529A (en) * | 2015-07-16 | 2015-09-16 | 陈伟 | Molten aluminum quantified feeding system |
| CN105950879A (en) * | 2016-07-06 | 2016-09-21 | 安徽宏泰模具有限公司 | Casting aluminum fluid descaling device |
| CN206550330U (en) * | 2017-03-11 | 2017-10-13 | 南京天翔机电有限公司 | Die casting machine aluminium material feedway |
| CN207272129U (en) * | 2017-10-16 | 2018-04-27 | 苟强强 | A kind of die casting machine with auto feed, feeding and cleaning device |
| CN109128119A (en) * | 2018-09-20 | 2019-01-04 | 北京东南汽车部件有限公司 | It casts barrel and infuses soup mouth molten aluminum remove device |
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| CN111618283A (en) | 2020-09-04 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A casting aluminum melt furnace Granted publication date: 20220211 Pledgee: Agricultural Bank of China Limited by Share Ltd. Jinhua Economic Development Zone Branch Pledgor: Jinhua Baolin Technology Co.,Ltd. Registration number: Y2024980005965 |
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