CN113134579A - Device and method for preparing metal semi-solid material - Google Patents
Device and method for preparing metal semi-solid material Download PDFInfo
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- CN113134579A CN113134579A CN202110355274.2A CN202110355274A CN113134579A CN 113134579 A CN113134579 A CN 113134579A CN 202110355274 A CN202110355274 A CN 202110355274A CN 113134579 A CN113134579 A CN 113134579A
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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
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D27/00—Stirring devices for molten material
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Abstract
The invention provides a device for preparing a metal semi-solid material, which comprises a fixing device, a transferring device, a mechanical stirring device and a pouring device, wherein the fixing device is used for installing the transferring device, the mechanical stirring device and the pouring device; the transfer device is used for storing the moving metal melt; the mechanical stirring device is used for stirring the metal melt; the pouring device is used for pouring the metal melt. The fixing device comprises a stainless steel base support, a stainless steel base top plate and a base bottom plate which are welded into a whole. The invention utilizes the mechanical crushing principle to crush the crystal nucleus of the metal melt by utilizing the balance body, promotes heterogeneous nucleation, refines crystal grains, and utilizes the mechanical agitation of the rotating balance body to stir the disturbance of the temperature field to ensure that the crystal grains in the metal melt are uniformly distributed, thereby obtaining the pure metal semi-solid material with fine and uniformly distributed crystal grains.
Description
Technical Field
The invention relates to the field of processing of semi-solid metal materials, in particular to a device and a method for preparing a metal semi-solid material.
Background
Semi-solid metal processing is a hot spot of metal processing technology research in recent years. The semi-solid technology has a series of characteristics, such as high precision and good quality of formed parts, and can be connected with net-close forming or net-final forming. Compared with the common processing method, the semisolid forming has wider application range, and the semisolid forming can be realized for all the alloys with the solid-liquid two-phase region. And is applicable to a variety of forming processes such as casting, extrusion, forging and welding. The semi-solid filling is stable, no turbulence and splashing exist, the processing temperature is low, the solidification shrinkage is small, so the size precision of the casting is high, the size of the formed part is almost the same as that of the finished part, the machining amount is greatly reduced, and the small-chip or non-chip processing can be realized. And the solidification time is short, which is beneficial to improving the productivity. As the most promising near-net-shape technology of light alloys in the 21 st century, semi-solid metal processing techniques can be divided into flow-to-flow forming and thixoforming. However, thixoforming is more costly, and the process difficulty in forming complex parts and the technical difficulty in controlling the production process are currently higher than that of rheoforming. The existing common rheoforming semi-solid pulping technology has the defects of more dendritic crystals and more air holes.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the technical problem of the prior art and provides a device and a method for preparing a metal semi-solid material.
In order to solve the technical problems, the invention provides a device for preparing a metal semi-solid material, which comprises a fixing device, a transferring device, a mechanical stirring device and a pouring device, wherein the fixing device is used for installing the transferring device, the mechanical stirring device and the pouring device; the transfer device is used for storing the moving metal melt; the mechanical stirring device is used for stirring the metal melt; the pouring device is used for pouring the metal melt.
In the invention, the fixing device comprises a stainless steel base support, and a stainless steel base top plate and a base bottom plate are welded into a whole.
According to the invention, the transfer device comprises a first dovetail slideway, a second dovetail slideway, a storage tank, a tank fixing seat, an air cylinder fixing plate and a third air cylinder, wherein the storage tank is fixed on the first dovetail slideway and the second dovetail slideway through the tank fixing seat, the third air cylinder is fixed on the bottom side of a top plate of a stainless steel base through the air cylinder fixing plate, and a piston rod of the third air cylinder is connected with the tank fixing seat.
The mechanical stirring device comprises a first air cylinder and a second air cylinder which are fixed on a top plate of a stainless steel base, the first air cylinder and the second air cylinder are connected to a motor fixing seat at the upper end together, a first servo motor is installed on the motor fixing seat, a rotating shaft of the first servo motor is connected with a rotating bottom plate, a temperature sensor is arranged in the middle of the bottom side of the rotating bottom plate, one side of the rotating bottom plate is connected with a second servo motor fixing frame, the second servo motor fixing frame is connected with a second servo motor, and a rotating shaft at the bottom of the second servo motor is connected with a balancing body.
According to the invention, the dumping device comprises a discharging platform, a limiting rib and a tilting telescopic rod, wherein the discharging platform is arranged on the side face of the top plate of the stainless steel base, the limiting rib is positioned on one side of the discharging platform, which is far away from the top plate of the stainless steel base, and the tilting telescopic rod controls the discharging platform to dump.
The invention also discloses a method for preparing the metal semi-solid material, which comprises the following steps:
step 1: smelting metal and pouring the metal into a storage tank;
step 2: starting the third cylinder to enable the storage tank to stably move to the position below the mechanical stirring device;
and step 3: starting the first air cylinder and the second air cylinder to enable the balance body and the temperature sensor to move downwards along the air cylinder driving rod, and enabling the temperature sensor and the balance body to be arranged in the metal melt to perform semi-solid treatment;
and 4, step 4: starting the first air cylinder and the second air cylinder to move the balance body and the temperature sensor out of the storage tank;
and 5: the storage tank moves to the dumping device, the tilting telescopic rod is started, the metal semi-solid material is dumped from the storage tank, and the semi-solid slurry is prepared.
In the invention, the semi-solid processing in the step 3 is to start the first servo motor and the second servo motor simultaneously to enable the balance body to rotate and revolve around the axis of the first servo motor.
Has the advantages that: the invention utilizes the mechanical crushing principle to crush the crystal nucleus of the metal melt by utilizing the balance body, promotes heterogeneous nucleation, refines crystal grains, and utilizes the mechanical agitation of the rotating balance body to stir the disturbance of the temperature field to ensure that the crystal grains in the metal melt are uniformly distributed, thereby obtaining the pure metal semi-solid material with fine and uniformly distributed crystal grains.
The metal semi-solid material prepared by the preparation device has small equivalent diameter, large shape factor, uniform grain distribution and less air holes and impurities.
Meanwhile, the device has the advantages of simple structure, high automation degree and easy operation, and is suitable for preparation of various metal semi-solid materials.
Drawings
The foregoing and other advantages of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic front view of the present invention.
FIG. 2 is a schematic view of a mechanical stirring apparatus of the present invention.
FIG. 3 is a schematic view of the pouring process of the present invention.
FIG. 4 is a schematic diagram of the cleaning process of the balance body of the present invention.
FIG. 5 is a metallographic image of an example.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Example (b):
the embodiment provides a device for preparing a metal semi-solid material, which comprises a fixing device, a transferring device, a mechanical stirring device and a pouring device, wherein the fixing device is used for installing the transferring device, the mechanical stirring device and the pouring device; the transfer device is used for storing the moving metal melt; the mechanical stirring device is used for stirring the metal melt; the pouring device is used for pouring the metal melt.
Referring to fig. 1, 2, 3 and 4, the fixing device comprises a stainless steel base support 1, a stainless steel base top plate 2 and a base bottom plate 18 which are welded together to form a whole.
The transfer device comprises a first dovetail slide way 5, a second dovetail slide way 6, a stock chest 14, a stock chest fixing seat 15, a cylinder fixing plate 16 and a third cylinder 17, wherein the stock chest 14 is fixed on the first dovetail slide way 5 and the second dovetail slide way 6 by the stock chest fixing seat 15, the third cylinder 17 is fixed on the bottom side of a stainless steel base top plate 2 through the cylinder fixing plate 16, and a piston rod of the third cylinder 17 is connected with the stock chest fixing seat 15.
Mechanical stirring device is including fixing first cylinder 7 and second cylinder 13 on stainless steel base roof 2, first cylinder 7 and second cylinder 13 are connected to the motor fixing base 9 of upper end jointly, install first servo motor 10 on the motor fixing base 9, first servo motor 10 axis of rotation connects rotating bottom plate 24, 24 bottom side middle parts of rotating bottom plate are equipped with temperature sensor 22, 24 one side of rotating bottom plate is connected second servo motor and is decided frame 25, second servo motor decides frame 25 and connects second servo motor 26, 26 bottom axis of rotation of second servo motor connects balancing body 8.
The dumping device comprises a discharging platform 3, a limiting rib 4 and a tilting telescopic rod 29, wherein the discharging platform 3 is arranged on the side face of a stainless steel base top plate 2, the limiting rib 4 is located on one side, away from the stainless steel base top plate 2, of the discharging platform 3, and the tilting telescopic rod 29 controls the discharging platform 3 to dump.
A method of preparing a metallic semi-solid material comprising the steps of:
step 1: smelting metal and pouring the metal into a storage tank;
step 2: starting the third cylinder to enable the storage tank to stably move to the position below the mechanical stirring device;
and step 3: starting the first air cylinder and the second air cylinder to enable the balance body and the temperature sensor to move downwards along the air cylinder driving rod, and enabling the temperature sensor and the balance body to be arranged in the metal melt to perform semi-solid treatment;
and 4, step 4: starting the first air cylinder and the second air cylinder to move the balance body and the temperature sensor out of the storage tank;
and 5: the storage tank moves to the dumping device, the tilting telescopic rod is started, the metal semi-solid material is dumped from the storage tank, and the semi-solid slurry is prepared.
The semi-solid processing of step 3 is to turn on the first servomotor 10 and the second servomotor 26 simultaneously, and to rotate and revolve the balance body 8 around the axis of the first servomotor 10.
The mass ratio between the balance body and the melt is adjustable and is mostly 3:1, 4:1 and 5: 1; the pouring temperature can be adjusted, and is generally 3-15 ℃ above the liquidus temperature; the balance body can rotate and revolve; and the rotating speed of the balancing body can be adjusted, and the rotating speed is generally 0-2500 r/min.
Specifically, the method comprises the following steps: the mechanical stirring device is composed of a first air cylinder 7, a balancing body 8, a motor fixing seat 9, a first servo motor 10, a motor fixing hole 11, a first balance slide block 12, a second air cylinder 3, a motor mounting hole 19, a second balance slide block 20, a slide block adjusting bolt 21, a temperature sensor 22, a first air cylinder driving rod 23, a rotating bottom plate 24, a second servo motor fixing frame 25, a second servo motor 6, a rotating shaft 27 and a second air cylinder driving rod 8.
During the use, choose the balance body of suitable quality to install in pivot 27 for use, treat that stock chest 14 shifts to agitating unit below after, under appointed pouring temperature, start first cylinder and second cylinder for balance body and temperature sensor move down along the cylinder actuating lever, make temperature sensor and balance body place in the metal melt in, at this moment, start servo motor according to appointed rotational speed parameter, treat to start first cylinder and second cylinder when balanced temperature or appointed temperature, shift out balance body and temperature sensor.
The metal melt is mechanically stirred at different pouring temperatures and different rotating speeds of the balance body, so that the metal semi-solid material is obtained, and the temperature change process of the metal melt conducted by the temperature sensor is recorded by the temperature recorder.
The dumping device consists of a discharging platform 3, a limiting rib 4 and a tilting telescopic rod 29. During the use, the stock chest is injectd on the platform of unloading, starts the telescopic link that verts for metal semi-solid state material emptys and goes out from the stock chest, and the balancing body shifts out the stock chest afterwards, uses the cleaning brush to wash the balancing body. The metal semi-solid material is smoothly poured into a designated die.
Referring to FIG. 5, the metallographic photograph of the semi-solid material was obtained when the alloy prepared in this example had Al-10Cu as a component, the mass ratio of the balance to the melt was 5:1, and the rotation speed of the balance was 2000 r/min. The microstructure morphology of the prepared semi-solid slurry is obviously improved, coarse dendrites are converted into near-spherical crystals, crystal grains in the structure are obviously refined after being processed by a device, the equivalent diameter is 99.60 mu m, and the shape factor is 0.668.
The present invention provides an apparatus and method for preparing a metallic semi-solid material, and a method and a way for implementing the same are numerous, and the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (7)
1. The device for preparing the metal semi-solid material is characterized by comprising a fixing device, a transferring device, a mechanical stirring device and a pouring device, wherein the fixing device is used for installing the transferring device, the mechanical stirring device and the pouring device; the transfer device is used for storing the moving metal melt; the mechanical stirring device is used for stirring the metal melt; the pouring device is used for pouring the metal melt.
2. An apparatus for preparing a metal semi-solid material according to claim 1, wherein the fixing means comprises a stainless steel base support (1), a stainless steel base top plate (2) and a base bottom plate (18) welded to each other to form a single body.
3. A device for preparing metal semi-solid material according to claim 2, characterized in that the transfer device comprises a first dovetail slideway (5), a second dovetail slideway (6), a stock tank (14), a trough fixing seat (15), a cylinder fixing plate (16) and a third cylinder (17), wherein the stock tank (14) is fixed on the first dovetail slideway (5) and the second dovetail slideway (6) by the trough fixing seat (15), the third cylinder (17) is fixed on the bottom side of the stainless steel base top plate (2) by the cylinder fixing plate (16), and the piston rod of the third cylinder (17) is connected with the trough fixing seat (15).
4. A device for preparing a metal semi-solid material according to claim 3, wherein the mechanical stirring device comprises a first cylinder (7) and a second cylinder (13) fixed on a stainless steel base top plate (2), the first cylinder (7) and the second cylinder (13) are jointly connected to a motor fixing seat (9) at the upper end, a first servo motor (10) is installed on the motor fixing seat (9), a rotating shaft of the first servo motor (10) is connected with a rotating bottom plate (24), a temperature sensor (22) is arranged in the middle of the bottom side of the rotating bottom plate (24), one side of the rotating bottom plate (24) is connected with a second servo motor fixing frame (25), the second servo motor fixing frame (25) is connected with a second servo motor (26), and a rotating shaft at the bottom of the second servo motor (26) is connected with the balancing body (8).
5. A device for preparing a metal semi-solid material according to claim 4, wherein the dumping device comprises a discharging platform (3), a limiting rib (4) and a tilting telescopic rod (29), the discharging platform (3) is arranged on the side of the stainless steel base top plate (2), the limiting rib (4) is arranged on the side, away from the stainless steel base top plate (2), of the discharging platform (3), and the tilting telescopic rod (29) controls the dumping of the discharging platform (3).
6. A method of preparing a metallic semi-solid material, comprising the steps of:
step 1: smelting metal and pouring the metal into a storage tank;
step 2: starting the third cylinder to enable the storage tank to stably move to the position below the mechanical stirring device;
and step 3: starting the first air cylinder and the second air cylinder to enable the balance body and the temperature sensor to move downwards along the air cylinder driving rod, and enabling the temperature sensor and the balance body to be arranged in the metal melt to perform semi-solid treatment;
and 4, step 4: starting the first air cylinder and the second air cylinder to move the balance body and the temperature sensor out of the storage tank;
and 5: the storage tank moves to the dumping device, the tilting telescopic rod is started, the metal semi-solid material is dumped from the storage tank, and the semi-solid slurry is prepared.
7. A method of preparing a metal semi-solid material according to claim 6, wherein the semi-solid process of the step 3 is embodied by simultaneously turning on the first servo motor (10) and the second servo motor (26) to rotate the balance body (8) and revolve around the axis of the first servo motor (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110355274.2A CN113134579A (en) | 2021-04-01 | 2021-04-01 | Device and method for preparing metal semi-solid material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110355274.2A CN113134579A (en) | 2021-04-01 | 2021-04-01 | Device and method for preparing metal semi-solid material |
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| CN113134579A true CN113134579A (en) | 2021-07-20 |
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| CN102620575A (en) * | 2012-04-16 | 2012-08-01 | 上海交通大学 | Device for preparing magnesium alloy semi-solid slurry by gas stirring |
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| CN108580814A (en) * | 2018-03-29 | 2018-09-28 | 南昌大学 | A method of preparing metal semi-solid slurry |
| CN209669280U (en) * | 2019-03-11 | 2019-11-22 | 内蒙古上泰实业有限公司 | A kind of device that topples of the electric arc furnaces hot metal charging for the production of 304 stainless steels |
| CN212639198U (en) * | 2020-05-29 | 2021-03-02 | 华伦纳路新材料有限公司 | Liquid resin canning bucket pouring device |
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2021
- 2021-04-01 CN CN202110355274.2A patent/CN113134579A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620575A (en) * | 2012-04-16 | 2012-08-01 | 上海交通大学 | Device for preparing magnesium alloy semi-solid slurry by gas stirring |
| CN102861902A (en) * | 2012-09-10 | 2013-01-09 | 北京科技大学 | Continuous preparation device for composite stirred semi-solid slurry |
| CN205200471U (en) * | 2015-11-20 | 2016-05-04 | 辽宁工业大学 | Device of semi -solid alloy rheology thick liquids or blank is prepared fast in compound sociable processing |
| CN105772654A (en) * | 2016-05-23 | 2016-07-20 | 浙江机电职业技术学院 | Stirring and mixing method for solid-liquid metal |
| CN106077573A (en) * | 2016-07-06 | 2016-11-09 | 安徽茂通精密模具制造有限公司 | Semi-solid aluminium alloy pulping agitator structure |
| CN205869412U (en) * | 2016-08-02 | 2017-01-11 | 昆山伟拓压铸机械有限公司 | Half solid -state metal thick liquids agitated vessel |
| CN207508245U (en) * | 2017-09-18 | 2018-06-19 | 南昌大学 | A kind of heat balance method of semi-solid processing automatic assembly line |
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| CN209669280U (en) * | 2019-03-11 | 2019-11-22 | 内蒙古上泰实业有限公司 | A kind of device that topples of the electric arc furnaces hot metal charging for the production of 304 stainless steels |
| CN212639198U (en) * | 2020-05-29 | 2021-03-02 | 华伦纳路新材料有限公司 | Liquid resin canning bucket pouring device |
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Application publication date: 20210720 |
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