CN112644990B - One-machine double-station ingot pulling system of vacuum smelting furnace - Google Patents
One-machine double-station ingot pulling system of vacuum smelting furnace Download PDFInfo
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- CN112644990B CN112644990B CN202011584127.4A CN202011584127A CN112644990B CN 112644990 B CN112644990 B CN 112644990B CN 202011584127 A CN202011584127 A CN 202011584127A CN 112644990 B CN112644990 B CN 112644990B
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- ingot pulling
- vacuum
- station
- ingot
- bracket
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
- F27B2014/0812—Continuously charging
Abstract
The invention discloses an ingot pulling system of a one-machine double-station vacuum smelting furnace, which belongs to the technical field of vacuum smelting, and adopts the technical scheme that the ingot pulling system comprises a civil engineering foundation, a bearing rail arranged on the civil engineering foundation, two groups of ingot pulling trolleys which are sequentially arranged at two ends of the bearing rail and can slide along the bearing rail, and a smelting station arranged between the two groups of ingot pulling trolleys, wherein the smelting station is arranged above the bearing rail, and the two groups of ingot pulling trolleys are provided with ingot pulling devices; the civil engineering foundation is also provided with a vacuum system and a hydraulic system, the vacuum system is used for providing the vacuum condition of the ingot pulling device, and the hydraulic system is used for providing the hydraulic power of the ingot pulling device; the invention provides a one-machine double-station vacuum smelting furnace ingot pulling system which has the functions and effects of high production efficiency, high control precision and wide application range.
Description
Technical Field
The invention belongs to the technical field of vacuum smelting, and particularly relates to an ingot pulling system of a one-machine double-station vacuum smelting furnace.
Background
In the processes of vacuum melting processing and metallurgical production, titanium is a new metal, and titanium alloy are also new materials with excellent performance, and are known as modern metals. Titanium and titanium alloy have a series of excellent characteristics, and are widely applied to the fields of aerospace, military industry, nuclear power, petrochemical industry, automobiles, buildings, medical treatment, leisure body-building and the like. Titanium has a strong affinity with oxygen and nitrogen and a melting point as high as about 1670 ℃, and must be melted in a cooled copper crucible under a vacuum atmosphere. The vacuum melting technology is the most advanced titanium melting technology really put into the industrialized production at present. Vacuum melting is the most advanced production equipment for melting and casting ingots of titanium, titanium alloy, nickel, zirconium, hafnium, tungsten, molybdenum, tantalum and other rare metals. The only countries that are currently capable of producing large electron beam cold hearth furnace plants (vacuum melting furnaces) are germany, the united states and ukraine.
Therefore, the key for solving the problems is to develop the one-machine double-station vacuum smelting furnace ingot pulling system which has the advantages of compact structure, high production efficiency, high control precision and wide application range.
Disclosure of Invention
The invention aims to provide a one-machine double-station vacuum smelting furnace ingot pulling system which has the functions and effects of high production efficiency, high control precision and wide application range.
The invention aims to realize the purpose, which comprises a civil foundation and a bearing track arranged on the civil foundation, and is characterized by also comprising two groups of ingot pulling trolleys which are sequentially arranged at two ends of the bearing track and can slide along the bearing track, and a smelting station arranged between the two ingot pulling trolleys, wherein the smelting station is arranged above the bearing track, and the two groups of ingot pulling trolleys are provided with ingot pulling devices; the civil engineering foundation is further provided with a vacuum system and a hydraulic system, the vacuum system is used for providing vacuum conditions for the ingot pulling device, and the hydraulic system is used for providing hydraulic power for the ingot pulling device.
The invention has the beneficial effects that:
1. the invention has compact structure, novel function, reliable use, stable operation, high control precision and high production efficiency, and can meet the production requirements of round ingots and plate blank components with various lengths and specifications;
2. the invention is combined with the smelting chamber, thereby effectively ensuring the smelting and ingot casting of titanium, titanium alloy, nickel, zirconium, hafnium, tungsten, molybdenum, tantalum and other rare metals and effectively ensuring the stability of products in the process of smelting and ingot casting.
3. The invention has the advantages of high structure control precision, clear operation flow, high production efficiency and yield, high energy and labor cost saving, high safety performance and high production efficiency.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an ingot pulling device according to the present invention;
FIG. 3 is a schematic view of a vacuum system of the present invention;
FIG. 4 is a schematic view of the construction of the ingot carrier of the present invention;
FIG. 5 is a schematic view of the structure of the reel of the present invention.
In the attached drawings, 1-civil engineering foundation, 2-bearing track, 3-ingot pulling device, 4-vacuum system, 5-hydraulic system, 6-ingot pulling trolley, 7-trolley frame, 8-jacking device, 9-gear reversing box, 10-motor reducer, 11-universal coupling, 12-trolley traveling motor reducer, 13-wheel set, 14-vacuum gate valve, 15-supporting section cylinder, 16-dielectric wall plate, 17-ingot pulling guide track, 18-ingot pulling bracket, 19-maintenance cabin door, 20-bottom section cylinder, 21-reel box, 22-heavy hammer traction device, 23-maintenance section cylinder, 24-vacuum pump unit, 25-vacuum filter barrel, 26-vacuum pipeline, 27-vacuum butterfly valve, 28-vacuum ripple compensator, 29-dummy bar head, 30-bracket upper cylinder section, 31-cooling water pipe, 32-guiding device, 33-bracket lower cylinder section, 34-five-stage hydraulic oil cylinder, 35-connecting block, 36-fixed pulley, 37-balancing weight, 38-reel disc, 39-rotary vacuum sealing seat, 40-cooling water gap, 41-limit switch device and 43-smelting station.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
A one-machine double-station vacuum smelting furnace ingot pulling system comprises a civil foundation 1, a bearing track 2 arranged on the civil foundation 1, two groups of ingot pulling trolleys 6 which are sequentially arranged at two ends of the bearing track 2 and can slide along the bearing track 2, and a smelting station arranged between the two groups of ingot pulling trolleys 6, wherein the smelting station is arranged above the bearing track 2, and the two groups of ingot pulling trolleys 6 are both provided with ingot pulling devices 3; the civil foundation 1 is also provided with a vacuum system 4 and a hydraulic system 5, wherein the vacuum system 4 is used for providing vacuum conditions for the ingot pulling device 3, and the hydraulic system 5 is used for providing hydraulic power for the ingot pulling device 3; an ingot pulling device 3 and an ingot pulling trolley 6 are respectively arranged at two ends of a civil foundation 1, one ingot pulling device is arranged at the left end 1# station on the civil foundation 1, the other ingot pulling device is arranged at the right end 2# station on the civil foundation 1, a vacuum system 4 and a hydraulic system 5 are respectively arranged at two sides of the civil foundation 1, the vacuum system 4 provides vacuum conditions for the ingot pulling device 3, the hydraulic system 5 provides hydraulic power for the ingot pulling device 3, a water cooling medium wall plate 16 provides cooling medium for the whole ingot pulling device 3, the ingot pulling trolley 6 provides power for the reciprocating motion of the ingot pulling device 3 from the end to the smelting station, the ingot pulling device 3 provides bearing and storage space for ingots smelted from the smelting chamber, limit switch devices 41 are arranged at two ends and the middle position of the civil foundation and are matched with the ingot pulling trolley 6 to move for use, the ingot pulling trolley 6 is descended by a jacking device 8 after the ingot pulling device 3 at the smelting station finishes ingot pulling, the ingot pulling is carried back to the ingot pulling device 3 to the 1# station for cooling, and the No. 2 station ingot pulling device 3 comes to the smelting position to work, and is combined into a one-machine double-station vacuum smelting furnace ingot pulling system.
The ingot pulling trolley 6 comprises a trolley frame 7, a wheel set 13 arranged at the bottom of the trolley frame 7 and a motor speed reducer 10 arranged on the trolley frame 7, wherein the output end of the motor speed reducer 10 is connected with a gear reversing box 9 in a rotating mode, the gear reversing box 9 is connected with a jacking device 8 in a rotating mode through a universal coupling 11, the ingot pulling device 3 is lifted under the power output of the jacking device 8, the wheel set 13 and a bearing rail 2 are arranged in a sliding mode, and a round hole is formed in the middle of the trolley frame 7.
The ingot pulling device 3 comprises a supporting section cylinder 15, a vacuum gate valve 14 arranged at the upper end of the supporting section cylinder 15, a plurality of ingot pulling guide rails 17 arranged on the outer wall of the supporting section cylinder 15, an overhauling section cylinder 23 connected to the lower end of the supporting section cylinder 15, a heavy hammer traction device 22 and a winding drum box 21 fixedly arranged on the supporting section cylinder 15, a steel wire rope in the heavy hammer traction device 22 is wound and stored in the winding drum box 21, a bottom section cylinder 20 is arranged on the overhauling section cylinder 23, an ingot pulling bracket 18 is arranged on the bottom section cylinder 20, and a guide wheel on the ingot pulling bracket 18 is attached to the ingot pulling guide rails 17 fixed on the overhauling section cylinder 23 and the supporting section cylinder 15 and is circumferentially fixed; the supporting section cylinder 15 is installed on an ingot pulling trolley jacking device, the vacuum gate valve 14 is connected with the supporting section cylinder 15 through bolts, the medium wall plate 16 is fixed on the supporting section cylinder 15 through welding, the maintenance section cylinder 23 is connected with the supporting section cylinder 15, 4 ingot pulling guide rails 17 are uniformly distributed on the maintenance section cylinder 23 and the supporting section cylinder 15 and fixed through bolts, the supporting section cylinder 15 is connected with the bottom section cylinder 20 and the winding drum box 21, the maintenance cabin door 19 is installed on the supporting section cylinder 15, the connection fixing end of the heavy hammer traction device 22 and the winding drum box 21 is welded on the supporting section cylinder 15, the ingot pulling bracket 18 is connected with the bottom section cylinder 20 through a pin shaft, and a guide wheel on the ingot pulling bracket 18 is attached to the ingot pulling guide rails 17 fixed on the maintenance section cylinder 23 and the supporting section cylinder 15 to be circumferentially fixed.
The vacuum system 4 comprises a vacuum pump unit 24 and a vacuum filter barrel 25, the vacuum pump unit 24 and the vacuum filter barrel 25 are communicated through a vacuum pipeline 26, the vacuum pipeline 26 at the outlet end of the vacuum filter barrel 25 is provided with a vacuum butterfly valve 27, the vacuum pipeline 26 is also provided with two branch pipes, and the outlet ends of the two branch pipes are provided with vacuum corrugated compensators 28; the vacuum butterfly valve 27 is connected with the flange of the vacuum pipeline 26 through bolts, and the vacuum corrugated compensator 28 is installed on the vacuum butterfly valve 27 of the extraction opening to play a role in buffering.
The ingot pulling bracket 18 comprises a bracket upper barrel section 30 and a bracket lower barrel section 33 which are communicated, the bracket upper barrel section 30 is provided with a dummy bar head 29, a disc surface fixedly arranged on the bracket lower barrel section 33 is provided with a guide device 32, the bottom of the bracket lower barrel section 33 is provided with a five-stage hydraulic oil cylinder 34, and the ingot pulling bracket 18 is integrally placed in the ingot pulling device 3 and fixedly arranged with the ingot pulling device 3 through a bottom section barrel body 20; the ingot pulling bracket 18 is integrally placed in the ingot pulling device 3 and is connected with the bottom section cylinder 20 through a pin shaft.
The reel box 21 comprises a reel disc 38, a rotary vacuum sealing seat 39 and a cooling water port 40, the reel disc 38 is placed in the reel box 21 and used for curling the cooling water pipe 31 and the steel wire rope, the rotary vacuum sealing seat 39 is installed on two sides of the reel box 21, and the cooling water port 40 is used for providing cooling water for the ingot pulling bracket 18.
The weight traction device 22 comprises a positioning connecting block 35, a balancing weight 37 and two fixed pulleys 36, a steel wire rope is fixedly arranged on the positioning connecting block 35, the steel wire rope bypasses the pulleys on the balancing weight 37 to be connected with the balancing weight 37, and the steel wire rope bypasses the fixed pulleys 36 arranged on the positioning connecting block 35 and is wound and fixed on the fixed pulleys on the winding drum box 21.
The working principle and the working process of the invention are as follows:
the system adopts a variable frequency speed regulating motor to drive the reciprocating motion of the ingot pulling trolley 6 and the up-and-down motion of the ingot pulling device 3, the vacuum system 4 provides smelting conditions, the hydraulic system 5 provides power for the lifting of the five-stage oil cylinder 34 and the switching of the vacuum gate valve 14, and the control system ensures the normal operation of the ingot pulling system of the whole one-machine double-station vacuum smelting furnace.
When the smelting chamber has smelting conditions, the ingot pulling device 3 on the No. 2 station is subjected to pre-vacuumizing preparation, the ingot pulling device 3 is lifted to a pre-vacuumizing position by the jacking device 8, the vacuum gate valve 14 is closed, after the vacuumizing work is finished, the ingot pulling device 3 is lowered to a low position, and the ingot pulling trolley 6 is driven by the trolley walking motor reducer 12 to move the ingot pulling device 3 to the smelting position. The jacking device 8 lifts the ingot pulling device 3 to be attached to the smelting chamber again, the vacuum gate valve 14 on the smelting chamber and the ingot pulling device 3 is opened simultaneously, the five-stage oil cylinder 34 starts to work, the five-stage oil cylinder 34 lifts the ingot pulling bracket 18 upwards from the bottom along the ingot pulling guide rail 17, the five-stage oil cylinder 34 stops when the dummy bar head 29 reaches the smelting position of the smelting chamber, the reel disc 38 in the reel box 21 rotates under the driving of the steel wire rope when the five-stage oil cylinder 34 rises, the cold distribution pipe and the steel wire rope on the reel disc 38 rise together with the ingot pulling bracket 18, the heavy hammer traction device 22 is driven by the steel wire rope outside the reel box 21, the counterweight block 37 rises to a high position, then the medium wall plate 16 starts to convey cooling water to the whole ingot pulling device 3, and the cooling water port 40 on the reel box 21 starts to supply cooling water to the ingot pulling bracket 18.
After the smelting operation is started, the five-stage oil cylinder 34 drives the ingot pulling bracket 18 to move downwards according to the process requirements, the smelted and formed ingot is placed on the dummy bar head 29, the high-position balancing weight 37 moves downwards in the downward movement process of the five-stage oil cylinder 34 to drive the reel disc 38 to rotate, the cooling water pipe and the steel wire rope are wound on the reel disc 38 in the rotation process of the reel disc 38, the guide device 32 on the ingot pulling bracket 18 moves to the low position along the ingot pulling guide rail 17, the smelting of a single ingot pulling device 3 is finished, the smelting chamber and the vacuum gate valve 14 on the ingot pulling device 3 are closed simultaneously, the ingot pulling device 3 is lowered to the low position by the jacking device 8, and the ingot pulling trolley 6 is driven by the trolley walking motor reducer 12 to move the ingot pulling trolley 3 to the No. 2 station. The jacking device 8 lifts the ingot pulling device 3 to the vacuum extraction opening again, and the vacuum system evacuates the ingot pulling device to cool the ingot in the cylinder.
After the ingot pulling device 3 returns to the No. 2 station, the ingot pulling device 3 on the No. 1 station starts to move to the smelting station according to the process operation to start working.
And after the ingot on the No. 2 station is cooled, opening a vacuum gate valve 14 on the ingot pulling device 3 to lift the ingot out by using a travelling crane, immediately putting the No. 2 station into use after the ingot pulling device 3 on the No. 1 station finishes the smelting position, and alternately working the ingot pulling devices 3 on the No. 1 and No. 2 stations back and forth until a production smelting period finishes.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (5)
1. A one-machine double-station vacuum smelting furnace ingot pulling system comprises a civil foundation (1) and a bearing rail (2) arranged on the civil foundation (1), and is characterized by also comprising two groups of ingot pulling trolleys (6) which are sequentially arranged at two ends of the bearing rail (2) and can slide along the bearing rail (2), and a smelting station arranged between the two groups of ingot pulling trolleys (6), wherein the smelting station is arranged above the bearing rail (2), and the two groups of ingot pulling trolleys (6) are provided with ingot pulling devices (3); the civil foundation (1) is also provided with a vacuum system (4) and a hydraulic system (5), the vacuum system (4) is used for providing a vacuum condition for the ingot pulling device (3), and the hydraulic system (5) is used for providing hydraulic power for the ingot pulling device (3); the ingot pulling trolley (6) comprises a trolley frame (7), a trolley wheel set (13) arranged at the bottom of the trolley frame (7), and a motor speed reducer (10) arranged on the trolley frame (7), wherein output ends of the motor speed reducer (10) are rotatably connected with a gear reversing box (9), the gear reversing box (9) is rotatably connected with a jacking device (8) through a universal coupling (11), the ingot pulling device (3) is lifted under the power output of the jacking device (8), the trolley wheel set (13) is slidably arranged with the bearing rail (2), and a round hole is formed in the middle of the trolley frame (7); the ingot pulling device (3) comprises a supporting section cylinder (15), a vacuum gate valve (14) arranged at the upper end of the supporting section cylinder (15), a plurality of ingot pulling guide rails (17) arranged on the outer wall of the supporting section cylinder (15), an overhauling section cylinder (23) connected and arranged at the lower end of the supporting section cylinder (15), a heavy hammer traction device (22) and a winding drum box (21) which are fixedly arranged on the supporting section cylinder (15), a steel wire rope in the heavy hammer traction device (22) is wound and stored in the winding drum box (21), the overhauling section cylinder (23) is provided with a bottom section cylinder (20), an ingot pulling bracket (18) is arranged on the bottom section cylinder (20), guide wheels on the ingot pulling bracket (18) are attached to the ingot pulling guide rails (17) fixed on the overhauling section cylinder (23) and the supporting section cylinder (15) and are circumferentially fixed.
2. The one-machine double-station vacuum smelting furnace ingot pulling system according to claim 1, wherein the vacuum system (4) comprises a vacuum pump unit (24) and a vacuum filter barrel (25), the vacuum pump unit (24) and the vacuum filter barrel (25) are communicated through a vacuum pipeline (26), the vacuum pipeline (26) at the outlet end of the vacuum filter barrel (25) is provided with a vacuum butterfly valve (27), the vacuum pipeline (26) is further provided with two branch pipes, and the outlet ends of the two branch pipes are provided with vacuum corrugated compensators (28).
3. The one-machine double-station vacuum smelting furnace ingot pulling system according to claim 1, wherein the ingot pulling bracket (18) comprises a bracket upper barrel section (30) and a bracket lower barrel section (33) which are communicated, a dummy bar head (29) is arranged on the bracket upper barrel section (30), a guide device (32) is arranged on a disc surface fixedly arranged on the bracket lower barrel section (33), a five-stage hydraulic oil cylinder (34) is arranged at the bottom of the bracket lower barrel section (33), and the ingot pulling bracket (18) is integrally placed in the ingot pulling device (3) and is fixedly arranged with the ingot pulling device (3) through a bottom section barrel (20).
4. The single-station double-station vacuum smelting furnace ingot pulling system according to claim 1, wherein the reel box (21) comprises a reel disc (38), a rotary vacuum seal seat (39) and a cooling water port (40), the reel disc (38) is placed in the reel box (21) and used for curling the cooling water pipe (31) and the steel wire rope, the rotary vacuum seal seat (39) is installed on two sides of the reel box (21), and the cooling water port (40) is used for providing cooling water for the ingot pulling bracket (18).
5. The ingot pulling system of a one-machine double-station vacuum smelting furnace according to claim 1, wherein the weight traction device (22) comprises a positioning connecting block (35), a balancing weight (37) and two fixed pulleys (36), a steel wire rope is fixedly arranged on the positioning connecting block (35), the steel wire rope bypasses the pulleys on the balancing weight (37) and is connected with the balancing weight (37), and the steel wire rope bypasses the fixed pulleys (36) arranged on the positioning connecting block (35) and is wound on the fixed pulleys fixed on the winding drum box (21).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584127.4A CN112644990B (en) | 2020-12-28 | 2020-12-28 | One-machine double-station ingot pulling system of vacuum smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011584127.4A CN112644990B (en) | 2020-12-28 | 2020-12-28 | One-machine double-station ingot pulling system of vacuum smelting furnace |
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| CN112644990A CN112644990A (en) | 2021-04-13 |
| CN112644990B true CN112644990B (en) | 2022-04-19 |
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| CN202011584127.4A Active CN112644990B (en) | 2020-12-28 | 2020-12-28 | One-machine double-station ingot pulling system of vacuum smelting furnace |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2043531U (en) * | 1988-06-30 | 1989-08-30 | 上海钢铁研究所 | Ingot puller for self-consumption vacuum furnace with double-electrode |
| EP0345542A2 (en) * | 1988-06-04 | 1989-12-13 | Forschungszentrum Jülich Gmbh | Cold smelt crucible |
| CN101347836A (en) * | 2008-08-29 | 2009-01-21 | 厦门钨业股份有限公司 | Vacuum induction smelting furnance |
| CN103952569A (en) * | 2014-04-23 | 2014-07-30 | 宝鸡市凯博真空科技有限公司 | Electronic beam cold hearth furnace |
| CN204058562U (en) * | 2014-08-01 | 2014-12-31 | 安丘市明达重工机械制造有限公司 | Remelting machine tool |
| CN205102604U (en) * | 2015-11-09 | 2016-03-23 | 成都金科达铝业有限公司 | Aluminium ingot melting furnace automatic feeding device |
| CN210593910U (en) * | 2019-07-10 | 2020-05-22 | 上海汉虹精密机械有限公司 | Double-station moving trolley for melting machine |
-
2020
- 2020-12-28 CN CN202011584127.4A patent/CN112644990B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345542A2 (en) * | 1988-06-04 | 1989-12-13 | Forschungszentrum Jülich Gmbh | Cold smelt crucible |
| CN2043531U (en) * | 1988-06-30 | 1989-08-30 | 上海钢铁研究所 | Ingot puller for self-consumption vacuum furnace with double-electrode |
| CN101347836A (en) * | 2008-08-29 | 2009-01-21 | 厦门钨业股份有限公司 | Vacuum induction smelting furnance |
| CN103952569A (en) * | 2014-04-23 | 2014-07-30 | 宝鸡市凯博真空科技有限公司 | Electronic beam cold hearth furnace |
| CN204058562U (en) * | 2014-08-01 | 2014-12-31 | 安丘市明达重工机械制造有限公司 | Remelting machine tool |
| CN205102604U (en) * | 2015-11-09 | 2016-03-23 | 成都金科达铝业有限公司 | Aluminium ingot melting furnace automatic feeding device |
| CN210593910U (en) * | 2019-07-10 | 2020-05-22 | 上海汉虹精密机械有限公司 | Double-station moving trolley for melting machine |
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| CN112644990A (en) | 2021-04-13 |
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