CN112091187B - Casting device of aluminum ingot continuous casting production line - Google Patents
Casting device of aluminum ingot continuous casting production line Download PDFInfo
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- CN112091187B CN112091187B CN202010895120.8A CN202010895120A CN112091187B CN 112091187 B CN112091187 B CN 112091187B CN 202010895120 A CN202010895120 A CN 202010895120A CN 112091187 B CN112091187 B CN 112091187B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D9/00—Machines or plants for casting ingots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
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Abstract
The invention relates to a casting device of an aluminum ingot continuous casting production line, which effectively solves the problem that aluminum oxide impurities are easy to mix in the aluminum ingot during casting; the technical scheme includes that the casting device comprises a conveying chain and a mould, a casting hole is formed in the bottom of the mould, a cover plate is arranged at the upper end of the casting hole, a casting pipe capable of moving up and down is arranged on the side of the conveying chain, the casting pipe is a T-shaped structure composed of a transverse pipe and a vertical pipe, a plurality of vertical grooves are uniformly distributed on the circumference of the side wall of the upper end of the vertical pipe, the vertical pipe moves upwards and extends into the casting hole to push the cover plate open, a waste material barrel is arranged below the vertical pipe, a piston is arranged in the vertical pipe, when the casting pipe moves to the highest position, the piston is positioned below the pipe opening of the transverse pipe, when the casting pipe moves to the lowest position, the piston is opposite to the center of the pipe opening of the transverse pipe, and at the moment, waste materials in the transverse pipe and the vertical pipe can flow into the waste material barrel; the invention can effectively reduce the formation of aluminum oxide, improve the utilization rate of the aluminum liquid, avoid the defect that an oxide layer is flushed into the aluminum liquid and effectively improve the quality of aluminum ingots.
Description
Technical Field
The invention relates to the field of aluminum ingot production, in particular to a casting device of an aluminum ingot continuous casting production line.
Background
In the field of aluminum processing, the recovered aluminum material needs to be melted back and cast into an aluminum ingot to be used as a raw material for subsequent aluminum profile processing; at present, an aluminum ingot continuous casting production line is generally adopted for large-scale production of aluminum ingots, and the production line can continuously complete the processes of casting, demolding, coding, stacking and the like of the aluminum ingots; at present when casting aluminium liquid in the mould, generally with chute or ladle from the casting of mould top, because aluminium liquid contact air of high temperature can quick oxidation, consequently aluminium liquid surface in the mould can form the oxide layer, aluminium liquid can break away this oxide layer during the casting to make subsequent aluminium liquid continuously oxidize and form new oxide layer, the oxide layer that breaks away can mix into in the aluminium liquid of below along with the liquid stream in addition, cause the aluminium liquid to contain more aluminium oxide impurity, influence the quality of aluminium ingot.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the casting device for the aluminum ingot continuous casting production line, which effectively solves the problem that aluminum oxide impurities are easy to mix in the aluminum ingot during casting.
The technical scheme includes that the casting device for the aluminum ingot continuous casting production line comprises a conveying chain and a mold, wherein the mold is placed on the conveying chain and moves along with the conveying chain to circulate among the working procedures, a vertical casting hole is formed in the bottom of the mold, a cover plate is arranged at the upper end of the casting hole, a vertical sliding rod is fixed on the lower surface of the cover plate, the lower end of the sliding rod penetrates through the bottom of the mold, a pressure spring is arranged between the lower end of the sliding rod and the bottom of the mold, and an upper port of the casting hole is sealed by the cover plate under the action of the pressure spring; the casting position is arranged on the moving path of the conveying chain, the casting pipe is arranged at the casting position and is a T-shaped structure consisting of a transverse pipe and a vertical pipe, a plurality of vertical grooves are uniformly distributed on the circumference of the side wall of the upper end of the vertical pipe, the casting pipe is connected with a hydraulic cylinder capable of pushing the vertical pipe to move up and down, when the mold moves to the casting position, the vertical pipe is positioned right below the casting hole, and the vertical pipe moves upwards and extends into the casting hole to prop open the cover plate; the standpipe below is equipped with a clout feed cylinder, installs a piston in the standpipe, and the piston lower extreme is through a dead lever and the relative fixed mounting in ground, and when the casting tube removed the highest position, the piston was located violently the orificial below of pipe, and when the casting tube removed the lowest position, the piston was relative with violently the orificial center of pipe, and piston thickness was less than violently the pipe internal diameter, violently manage this moment and in the standpipe remaining clout can follow the lower extreme of standpipe and flow to the clout feed cylinder in.
The invention can effectively reduce the formation of aluminum oxide, improve the utilization rate of the aluminum liquid, avoid the defect that an oxide layer is flushed into the aluminum liquid and effectively improve the quality of aluminum ingots.
Drawings
Fig. 1 is a front cross-sectional view of the present invention with the cover closed.
FIG. 2 is a front cross-sectional view of the present invention with the standpipe removed from the cover plate.
Fig. 3 is a side view of the present invention.
Fig. 4 is an enlarged view of the position a in fig. 1.
Fig. 5 is an enlarged view of the position B in fig. 2.
Fig. 6 is an enlarged view of the position C in fig. 1.
Fig. 7 is an enlarged view of the position D in fig. 3.
FIG. 8 is a front cross-sectional view of the upper end of a standpipe.
FIG. 9 is a top view of a standpipe.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, the casting device comprises a conveying chain 1 and a mold 2, wherein the mold 2 is placed on the conveying chain 1 and flows among the working procedures along with the movement of the conveying chain 1, a vertical casting hole 3 is formed in the bottom of the mold 2, a cover plate 4 is arranged at the upper end of the casting hole 3, a vertical sliding rod 5 is fixed on the lower surface of the cover plate 4, the lower end of the sliding rod 5 penetrates through the bottom of the mold 2, a pressure spring 6 is arranged between the lower end of the sliding rod 5 and the bottom of the mold 2, and the cover plate 4 seals an upper port of the casting hole 3 under the action of the pressure spring 6; a casting position is arranged on the moving path of the conveying chain 1, a casting pipe is arranged at the casting position, the casting pipe is a T-shaped structure consisting of a transverse pipe 7 and a vertical pipe 8, a plurality of vertical grooves 9 are uniformly distributed on the circumference of the side wall of the upper end of the vertical pipe 8, the casting pipe is connected with a hydraulic cylinder 10 capable of pushing the vertical pipe to move up and down, when the mold 2 moves to the casting position, the vertical pipe 8 is positioned under the casting hole 3, and the vertical pipe 8 moves upwards and extends into the casting hole 3 to prop open the cover plate 4; the standpipe 8 below is equipped with a clout feed cylinder 11, installs a piston 12 in the standpipe 8, and the relative fixed mounting in dead lever 13 and ground of piston 12 lower extreme, when the casting pipe removed the highest position, piston 12 was located violently the orificial below of pipe 7, and when the casting pipe removed the lowest position, piston 12 was relative with violently the orificial center of pipe 7, and piston 12 thickness was less than violently the pipe 7 internal diameter, violently manage and flow to clout feed cylinder 11 from the lower extreme of standpipe 8 in remaining clout in 7 and the standpipe 8 this moment.
An aluminum liquid cylinder 14 is arranged on one side of the casting position, a heating layer 15 is arranged in the side wall of the aluminum liquid cylinder 14, and aluminum liquid can be temporarily stored in the aluminum liquid cylinder 14; the end of the horizontal pipe 7 which is not connected with the vertical pipe 8 is communicated with the bottom of the aluminum liquid cylinder 14.
One end fixedly connected with one upper end opening lower extreme confined sliding sleeve 16 of violently managing 7 and an aluminium liquid section of thick bamboo 14 intercommunication, a vertical discharging pipe 17 is installed to the bottom of an aluminium liquid section of thick bamboo 14, installs an electric control valve 18 of control ejection of compact on the discharging pipe 17, sliding sleeve 16 slidable cover is established on discharging pipe 17 and is laminated with discharging pipe 17 outer wall to can realize that the casting pipe communicates with an aluminium liquid section of thick bamboo 14 all the time when reciprocating.
Casting position be equipped with a vertical pin 19, pin 19 can keep off mould 2 and not move along with conveying chain 1 in the casting position, pin 19 lower extreme articulates in the frame of continuous casting production line and pin 19 lower extreme installs and makes it keep vertical torsional spring 20, driven gear 21 is installed to pin 19's lower extreme, driven gear 21 meshes has an incomplete gear 22, incomplete gear 22 is driven by step motor, incomplete gear 22 rotates accessible driven gear 21 and drives pin 19 and change to the horizontality, thereby make mould 2 pass through, incomplete gear 22 has the tooth section and driven gear 21 to finish meshing back, pin 19 returns vertical state under torsional spring 20's effect.
A distance sensor 23 is arranged at the casting position and is positioned right above the mould 2, and the distance sensor 23 can control the electric control valve 18, the hydraulic cylinder 10 and the stepping motor of the incomplete gear 22; after the distance sensor 23 detects that the mold 2 moves to the lower part of the mold, the hydraulic cylinder 10 is controlled to lift upwards, the cover plate 4 is lifted by the vertical rod, and then the electric control valve 18 is controlled to be opened to start casting; after the distance sensor 23 detects that the liquid level in the mold 2 reaches the casting height, the electronic control valve 18 is firstly closed, then the hydraulic cylinder 10 is lowered, then the stepping motor drives the incomplete gear 22 to rotate for one circle, the stop lever 19 rotates and falls, the mold 2 passes over the stop lever 19 and continues to move to the next process along with the conveying chain 1, and then the stop lever 19 is erected again under the action of the torsion spring 20.
The moving path of the conveying chain 1 is provided with a wedge block 24 located at the downstream of the casting position, the wedge block 24 is fixed relative to the frame of the conveying chain 1, the small end of the wedge block 24 faces the upstream direction of the conveying chain 1, when the mold 2 moves to the position of the wedge block 24 along with the conveying chain 1, the lower end of a sliding rod 5 at the bottom of the mold 2 is in contact with the wedge surface of the wedge block 24, and along with the movement of the conveying chain 1, the wedge block 24 gradually pushes up the sliding rod 5 and a cover plate 4 upwards, so that an aluminum ingot in the mold 2 is pushed upwards by a certain height, the aluminum ingot is separated from the inner wall of the mold 2, and the subsequent demolding is facilitated.
A feed port 25 is formed in the upper end of the side wall of the aluminum liquid cylinder 14, a chute 26 is connected outside the feed port 25, a first baffle 27 is fixed on the upper side of the outer port of the feed port 25, a second baffle 28 is fixed at the bottom of the end of the chute 26 connected with the feed port 25, and the upper end of the second baffle 28 is higher than the lower end of the first baffle 27; after the molten aluminum is poured into the chute 26, the liquid level can overflow into the molten aluminum barrel 14 only by crossing the second baffle 28, at this time, an oxidation layer formed on the surface of the molten aluminum in the chute 26 is blocked by the first baffle 27 and cannot flow into the molten aluminum barrel 14, the molten aluminum in the chute 26 flows below the oxidation layer, and the oxidation layer can also prevent a new oxidation layer from being continuously formed.
The aluminum liquid cylinder 14 is communicated with an air pump 29, the inner port of the feeding hole 25 is provided with a third baffle 30 capable of being opened inwards in a one-way manner, and the air pump 29 can pump inert gas into the aluminum liquid cylinder 14 to form high pressure in the aluminum liquid cylinder 14, so that the casting speed is improved.
The inner bottom of the mould 2 is provided with a groove 31 with the same size and shape as the cover plate 4, the cover plate 4 is positioned in the groove 31 when the casting hole 3 is closed, and the upper surface of the cover plate 4 and the inner bottom surface of the mould 2 are positioned on the same plane.
One end of the horizontal pipe 7 connected with the vertical pipe 8 is lower than the other end, so that excess material is discharged.
When the aluminum liquid pouring device is used, firstly, aluminum liquid is poured into the aluminum liquid cylinder 14 through the chute 26, and the heating layer 15 is opened to prevent the aluminum liquid in the aluminum liquid cylinder 14 from being solidified; the method comprises the following steps that the molds 2 are equidistantly placed on a conveying chain 1 and move along with the conveying chain 1, when the molds 2 move to a casting position, the molds 2 are blocked by a blocking rod 19 and are temporarily kept at the casting position, at the moment, a distance sensor 23 detects the molds 2 below the molds, the distance sensor 23 sends a signal to enable a hydraulic cylinder 10 to push a casting pipe upwards, the upper end of a vertical pipe 8 is inserted into a casting hole 3 and jacks a cover plate 4, at the moment, a piston 12 is located below a port of a transverse pipe 7 to seal a lower port of the vertical pipe 8, then an electric control valve 18 is opened, and aluminum liquid in an aluminum liquid cylinder 14 flows into the vertical pipe 8 through the transverse pipe 7 and is cast into the molds 2 through a vertical groove 9; the back in the mould 2 is cast to aluminium liquid, can form the one deck oxide layer on the top layer of aluminium liquid, because aluminium liquid is cast from 2 bottoms of mould, so the oxide layer that the top layer formed can not destroyed and can not sneak into in the aluminium liquid of below, the oxide layer covers and rises along with the liquid level on aluminium liquid surface, also can prevent that the aluminium liquid of below from being sustained the oxidation and forming new oxide layer, has guaranteed the purity of aluminium liquid in the mould 2, the quality of effectual improvement aluminium pig.
When the pressure of the aluminum liquid in the aluminum liquid cylinder 14 is insufficient, the air pump 29 can be started to pump inert gas into the aluminum liquid cylinder 14, at the moment, the third baffle 30 at the feed port 25 seals the feed port 25, the pressure in the aluminum liquid cylinder 14 is increased, and the casting speed of the aluminum liquid is improved.
When the distance sensor 23 detects that the liquid level in the mold 2 reaches the casting height, the distance sensor 23 sends a control signal, the electric control valve 18 is firstly closed, then the hydraulic cylinder 10 moves downwards, the vertical pipe 8 exits from the casting hole 3, the cover plate 4 descends under the action of the pressure spring 6 to seal the casting hole 3, at the moment, the piston 12 is positioned at the position of the pipe opening of the transverse pipe 7, the excess materials in the transverse pipe 7 and the vertical pipe 8 can be discharged into the excess material barrel 11 from the lower end of the vertical pipe 8, the excess materials are prevented from being solidified in the pipe, and the excess materials in the excess material barrel 11 can be re-melted and utilized; after the vertical pipe 8 exits from the casting hole 3, the stepping motor is started to drive the incomplete gear 22 to rotate for one circle, when the toothed section of the incomplete gear 22 is meshed with the driven gear 21, the driven gear 21 rotates to drive the vertical rod to rotate from vertical to horizontal without blocking the mold 2 under the action of the torsion spring 20, the mold 2 moves to the next procedure along with the conveying chain 1, and after the toothed section of the incomplete gear is meshed with the driven gear 21, the stop lever 19 returns to the vertical state under the action of the torsion spring 20; the action sequence of the electromagnetic valve, the hydraulic cylinder 10 and the stepping motor is controlled by a PLC.
When the cast mold 2 moves to the position of the wedge-shaped block 24 along with the conveying chain 1, the lower end of the slide rod 5 is in contact with the inclined surface of the wedge-shaped block 24, and the wedge-shaped block 24 gradually pushes the slide rod 5 to move upwards, so that the cover plate 4 pushes the solidified aluminum ingot in the mold 2 upwards to a certain height, the aluminum ingot is separated from the inner wall of the mold 2, and subsequent overturning and demolding are facilitated.
According to the invention, the aluminum liquid is cast into the mold 2 from the bottom, so that an oxidation film formed on the surface of the aluminum liquid is not damaged, the continuous oxidation of the aluminum liquid is prevented during casting, the formation of aluminum oxide is effectively reduced, the utilization rate of the aluminum liquid is improved, meanwhile, the defect that the oxidation layer is scattered and mixed into the aluminum liquid during casting from the top is avoided during casting from the bottom, the cleanliness of the aluminum liquid in the mold 2 is improved, and the quality of aluminum ingots is effectively improved; in addition, the cover plate 4 is matched with the wedge-shaped block 24 to separate the aluminum ingot from the inner wall of the mold 2, so that the success rate of subsequent overturning and demolding is ensured, and the continuous casting production line can run orderly.
Claims (8)
1. The casting device for the aluminum ingot continuous casting production line comprises a conveying chain (1) and a mold (2), and is characterized in that the mold (2) is placed on the conveying chain (1) and moves along with the conveying chain (1) to circulate among all working procedures, a vertical casting hole (3) is formed in the bottom of the mold (2), a cover plate (4) is arranged at the upper end of the casting hole (3), a vertical sliding rod (5) is fixed on the lower surface of the cover plate (4), the lower end of the sliding rod (5) penetrates through the bottom of the mold (2), a pressure spring (6) is installed between the lower end of the sliding rod (5) and the bottom of the mold (2), and under the action of the pressure spring (6), an upper port of the casting hole (3) is sealed by the cover plate (4); the casting position is arranged on the movement path of the conveying chain (1), the casting pipe is arranged at the casting position and is a T-shaped structure consisting of a transverse pipe (7) and a vertical pipe (8), a plurality of vertical grooves (9) are uniformly distributed on the circumference of the side wall of the upper end of the vertical pipe (8), the casting pipe is connected with a hydraulic cylinder (10) capable of pushing the vertical pipe to move up and down, when the mold (2) moves to the casting position, the vertical pipe (8) is positioned under the casting hole (3), and the vertical pipe (8) moves upwards and extends into the casting hole (3) to prop open the cover plate (4); a residual material barrel (11) is arranged below the vertical pipe (8), a piston (12) is arranged in the vertical pipe (8), the lower end of the piston (12) is fixedly installed relative to the ground through a fixing rod (13), when the casting pipe moves to the highest position, the piston (12) is positioned below the pipe opening of the transverse pipe (7), when the casting pipe moves to the lowest position, the piston (12) is opposite to the center of the pipe opening of the transverse pipe (7), the thickness of the piston (12) is smaller than the inner diameter of the transverse pipe (7), and residual materials in the transverse pipe (7) and the vertical pipe (8) can flow into the residual material barrel (11) from the lower end of the vertical pipe (8);
an aluminum liquid cylinder (14) is arranged on one side of the casting position, a heating layer (15) is arranged in the side wall of the aluminum liquid cylinder (14), and aluminum liquid can be temporarily stored in the aluminum liquid cylinder (14); one end of the transverse pipe (7) which is not connected with the vertical pipe (8) is communicated with the bottom of the aluminum liquid cylinder (14);
violently pipe (7) and one end fixedly connected with of an aluminium liquid section of thick bamboo (14) intercommunication upper end opening lower extreme confined sliding sleeve (16), a vertical discharging pipe (17) is installed to the bottom of an aluminium liquid section of thick bamboo (14), install an electric control valve (18) of control ejection of compact on discharging pipe (17), sliding sleeve (16) slidable cover is established on discharging pipe (17) and is laminated with discharging pipe (17) outer wall.
2. The aluminum ingot continuous casting production line casting device of claim 1, wherein the casting position is provided with a vertical stop lever (19), the stop lever (19) can stop the mold (2) at the casting position without moving along with the conveying chain (1), the lower end of the stop lever (19) is hinged on a frame of the continuous casting production line, a torsion spring (20) for keeping the mold vertical is arranged at the lower end of the stop lever (19), a driven gear (21) is arranged at the lower end of the stop lever (19), the driven gear (21) is meshed with an incomplete gear (22), and the incomplete gear (22) is driven by a stepping motor.
3. An aluminium ingot continuous casting line casting device according to claim 1, characterized in that the casting station is provided with a distance sensor (23) directly above the mould (2), the distance sensor (23) being adapted to control the electric control valve (18), the hydraulic cylinder (10) and the stepper motor of the incomplete gear (22).
4. The casting device of the aluminum ingot continuous casting production line according to claim 1, wherein a wedge block (24) located at the downstream of the casting position is arranged on the moving path of the conveying chain (1), the wedge block (24) is fixed relative to the frame of the conveying chain (1), the small end of the wedge block (24) faces the upstream direction of the conveying chain (1), when the mold (2) moves to the position of the wedge block (24) along with the conveying chain (1), the lower end of the sliding rod (5) at the bottom of the mold (2) is in contact with the inclined surface of the wedge block (24), and along with the movement of the conveying chain (1), the wedge block (24) gradually pushes up the sliding rod (5) and the cover plate (4), so that the aluminum ingot in the mold (2) is pushed upwards to a certain height, and the aluminum ingot is separated from the inner wall of the mold (2).
5. The casting device of the aluminum ingot continuous casting production line according to claim 2, wherein a feeding hole (25) is formed in the upper end of the side wall of the aluminum liquid cylinder (14), a chute (26) is connected outside the feeding hole (25), a first baffle plate (27) is fixed on the upper side of the outer end opening of the feeding hole (25), a second baffle plate (28) is fixed at the bottom of one end, connected with the feeding hole (25), of the chute (26), and the upper end of the second baffle plate (28) is higher than the lower end of the first baffle plate (27).
6. The casting device of the aluminum ingot continuous casting production line according to claim 5, wherein the aluminum liquid cylinder (14) is communicated with an air pump (29), the inner port of the feeding hole (25) is provided with a third baffle (30) capable of being opened inwards in a one-way manner, and the air pump (29) can pump inert gas into the aluminum liquid cylinder (14) to form high pressure in the aluminum liquid cylinder (14).
7. The casting device of an aluminum ingot continuous casting line according to claim 1, wherein the inner bottom of the mold (2) is provided with a groove (31) which has the same size and shape as the cover plate (4), the cover plate (4) is positioned in the groove (31) when the casting hole (3) is closed, and the upper surface of the cover plate (4) is positioned on the same plane with the inner bottom of the mold (2).
8. An aluminium ingot continuous casting line casting device according to claim 1, characterized in that the end of the cross pipe (7) connected to the vertical pipe (8) is lower than the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010895120.8A CN112091187B (en) | 2020-08-31 | 2020-08-31 | Casting device of aluminum ingot continuous casting production line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010895120.8A CN112091187B (en) | 2020-08-31 | 2020-08-31 | Casting device of aluminum ingot continuous casting production line |
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| CN112091187B true CN112091187B (en) | 2021-08-24 |
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| CN114939634B (en) * | 2022-05-23 | 2024-01-16 | 安徽玉成光华铝业有限公司 | Environment-friendly aluminum ingot production process |
| CN115319035B (en) * | 2022-08-19 | 2023-10-31 | 眉山市博眉启明星铝业有限公司 | Casting device for aluminum ingot continuous casting production line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599708A (en) * | 1967-08-04 | 1971-08-17 | Sumitomo Metal Ind | Bottom pouring apparatus for steel ingots |
| JPS56105863A (en) * | 1980-01-27 | 1981-08-22 | Kanto Tokushu Seikou Kk | Rotary ingotting method |
| FR2705259B1 (en) * | 1993-05-19 | 1995-07-07 | Pont A Mousson | Device for supplying molten metal, in particular cast iron, to a casting machine, and casting installation integrating this supply device. |
| JP5458701B2 (en) * | 2009-07-01 | 2014-04-02 | 新日鐵住金株式会社 | Steel ingot casting method |
| CN207255175U (en) * | 2017-09-06 | 2018-04-20 | 北京有色金属研究总院 | A kind of magnesium alloy ingot blank undercurrent type filters sublimate die casting device |
| CN108817331A (en) * | 2018-06-29 | 2018-11-16 | 铜陵康达铝合金制品有限责任公司 | It is a kind of can smooth transition aluminium alloy cast ingot automatic production line |
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