CN215746293U - Pulping machine and semi-solid metal slurry die-casting molding system - Google Patents
Pulping machine and semi-solid metal slurry die-casting molding system Download PDFInfo
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- CN215746293U CN215746293U CN202121933527.1U CN202121933527U CN215746293U CN 215746293 U CN215746293 U CN 215746293U CN 202121933527 U CN202121933527 U CN 202121933527U CN 215746293 U CN215746293 U CN 215746293U
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Abstract
The utility model discloses a pulping machine which comprises a vacuum box, wherein the vacuum box comprises an upper cover and a box body which are closed to form a closed space, the upper cover is connected with a vacuumizing device and a stirring device, the upper cover is connected with a driving mechanism capable of driving the box body to move relative to the upper cover, the box body is arranged below the upper cover, and the top end of the box body or the bottom end of the upper cover is provided with a sealing glue layer. The utility model also discloses a semi-solid metal slurry die-casting forming system, the design of the utility model is reasonable and ingenious, the high-temperature metal liquid is changed into the semi-solid metal slurry with relatively low temperature by arranging the pulping machine, the temperature of the slurry is low in the forming process, the service life of the die-casting die can be prolonged, the metallographic structure of the product is improved, sand holes and air holes are reduced, and the mechanical property of the product is improved.
Description
Technical Field
The utility model relates to metal die-casting, in particular to a pulping machine and a semi-solid metal slurry die-casting forming system.
Background
In the prior art, because the temperature of the molten metal in a hot melting state is high, in the forming process of the traditional metal die casting, defects such as sand holes, air holes, shrinkage cavities and the like are easy to occur, and the organization structure of a product is loose. And after the die-casting die works at high temperature and high pressure for a long time, the erosion phenomenon appears on the surface of the die, and the service life of the die is shortened.
A pulper and a semi-solid metal slurry die-casting system capable of overcoming the above problems have been demanded.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention discloses a pulper.
The utility model also discloses a semi-solid metal slurry die-casting forming system.
The technical scheme adopted by the utility model for realizing the purpose is as follows:
a semi-solid metal slurry is made into semi-solid metal slurry through pulping machine, and then the semi-solid metal slurry is fed into die-casting mould cavity and die-cast. After the semi-solid forming technology is combined with a corresponding die-casting die, the existing problems can be solved, and meanwhile, the mechanical property and the heat dissipation performance of the product are improved.
The semi-solid metal slurry die-casting forming method comprises the following steps:
step 1: putting the metal ingot into a smelting furnace, setting the temperature of the smelting furnace as a first temperature, and melting the metal ingot into liquid metal;
step 2: putting the liquid metal into a vacuum box of a pulping machine, stirring in a vacuum state, setting the stirring speed, and making the liquid metal into semi-solid metal slurry when the temperature in the vacuum box reaches a set second temperature;
and step 3: putting the semi-solid metal slurry into an inlet of a pressure chamber of a die casting machine;
and 4, step 4: and (4) working of the die casting machine, and forming the semi-solid metal slurry in a die cavity of the die casting die.
In the step 1, the metal ingot is an aluminum ingot, the aluminum ingot is put into a melting furnace, the first temperature is 660 +/-20 ℃, and the aluminum ingot is melted into liquid aluminum;
in the step 2, the vacuum state in the vacuum box is 85%, the stirring speed is 1000 rpm, and the second temperature is 610 +/-5 ℃, so that the liquid aluminum becomes semi-solid slurry.
In the step 2 and the step 3, liquid aluminum is ladled out of the smelting furnace through a feeding machine and is sent into a vacuum box of the pulping machine;
in the step 4, an injection rod of the die casting machine is started, the semi-solid slurry is injected into a die cavity from a pressure chamber for forming, the starting time of the injection rod is increased for 2 seconds, the pressure is maintained for 2 seconds, and cooling forming is carried out; the injection pressure was 50MPa and the injection speed was 3 m/s.
The utility model provides a pulping machine, pulping machine includes the vacuum chamber, and this vacuum chamber covers on this including closing together upper cover and the box that forms airtight space, is connected with evacuating device and agitating unit on this, covers on this to be connected with and to order about the actuating mechanism that this box upper cover relatively removed, the box sets up in the upper cover below, and the top of this box or the bottom of upper cover are equipped with sealed glue film.
As a further improvement of the present invention, the pulper further comprises a machine table, wherein a lifting platform is movably arranged on the machine table, and the upper cover is fixedly arranged on the lower surface of the lifting platform.
As a further improvement of the utility model, the stirring device comprises a stirring motor and a stirring rod, the stirring rod is fixedly connected with the output end of the stirring motor, the stirring motor is arranged on the lifting platform, and the stirring rod extends into the upper cover.
As a further improvement of the present invention, the vacuum-pumping device comprises a vacuum-pumping suction nozzle fixed on the lifting platform, and the tail end of the vacuum-pumping suction nozzle extends into the upper cover.
As a further improvement of the present invention, the driving mechanism includes a screw rod driven by a driving motor to rotate, the screw rod is disposed on the machine platform, a screw rod nut is sleeved on the screw rod, the screw rod nut is fixed on the movable bracket, and the movable bracket is connected with the lifting platform.
As a further improvement of the utility model, the lower surface of the machine table is provided with two guide rails in parallel, the movable support is I-shaped, the movable support is provided with a sliding part matched with the guide rails, and the sliding part is sleeved on the slide rails
The utility model provides a semi-solid metal thick liquids die-casting forming system, its includes die casting machine, smelting pot, gives hot water machine, sprayer, reclaimer and aforementioned pulper, and this pulper sets up in the portion one side of penetrating of this die casting machine, and this smelting pot sets up in the pulper right side, set up in the right side of smelting pot for the hot water machine, the spoon of giving the hot water machine corresponds the pressroom setting of pulper, smelting pot and die casting machine, this sprayer set up in the die casting machine top, and this reclaimer sets up in the opposite side of penetrating the portion of this die casting machine.
As a further improvement of the utility model, the soup feeder comprises a soup feeding support, a transverse moving track is arranged on the soup feeding support, a sliding base is slidably arranged on the transverse moving track, a mechanical arm is arranged on the sliding base, and the spoon is arranged at the tail end of the mechanical arm.
The utility model has the beneficial effects that: the utility model has reasonable and ingenious design, and the pulping machine is arranged, so that the high-temperature metal liquid is changed into the semi-solid metal slurry with relatively low temperature, and the temperature of the slurry is low in the forming process, so that the service life of the die-casting die can be prolonged, the metallographic structure of the product is improved, sand holes and air holes are reduced, and the mechanical property of the product is improved.
The utility model is further described with reference to the following detailed description and accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a semi-solid metal slurry die-casting system of the present invention;
FIG. 2 is a schematic view of another angle of the semi-solid metal slurry die casting system of the present invention;
FIG. 3 is a schematic view of the structure of the pulper and the soup feeder of the present invention;
FIG. 4 is a schematic view of the structure of the pulper of the present invention;
FIG. 5 is a schematic view of another angle of the pulper of the present invention;
FIG. 6 is a schematic structural view of the elevating platform and the driving mechanism of the present invention;
fig. 7 is a metallographic structure diagram of a die-cast product.
Detailed Description
Example, referring to fig. 1 to 6, in the method for die-casting and forming a semi-solid metal slurry provided in this example, a liquid metal slurry is made into a semi-solid metal slurry by a slurrying machine 1, and the semi-solid metal slurry is put into a die-casting mold cavity and is die-cast and formed. After the semi-solid forming technology is combined with a corresponding die-casting die, the existing problems can be solved, and meanwhile, the mechanical property and the heat dissipation performance of the product are improved.
As a further improvement of the method, it comprises the following steps:
step 1: putting the metal ingot into a smelting furnace 2, setting the temperature of the smelting furnace 2 as a first temperature, and melting the metal ingot into liquid metal;
in this embodiment, an a360R aluminum ingot is placed in the melting furnace 2, and the aluminum ingot is melted into a liquid state. The liquid A360R comprises the following raw materials in percentage by weight: 9 to 10 percent of silicon (Si), less than or equal to 1.3 percent of iron (Fe), less than or equal to 0.6 percent of copper (Cu), less than or equal to 0.35 percent of manganese (Mn), 0.4 to 0.6 percent of magnesium (Mg), less than or equal to 0.5 percent of nickel (Ni), less than or equal to 0.5 percent of zinc (Zn), less than or equal to 0.15 percent of tin (Sn) and the balance of aluminum (Al).
Step 2: putting the liquid metal into a vacuum box of a pulping machine 1, stirring in a vacuum state, setting the stirring speed, and making the liquid metal into semi-solid metal slurry when the temperature in the vacuum box reaches a set second temperature;
in this embodiment, detect liquid level height for 3 liquid level detectors of soup machine, drive spoon 35, get the material angle through spoon 35, ladle out the liquid aluminium of corresponding weight from smelting pot 2, keep flat spoon 35 that contains liquid aluminium to putting into the vacuum chamber of pulper 1.
The upper cover 111 of the vacuum box of the pulping machine 1 is closed, the stirring rod 12 is inserted into the liquid aluminum, the vacuumizing device is started, the vacuum state is 85%, the stirring rod 12 starts stirring, when the temperature of the slurry reaches a set value, the stirring rod 12 stops stirring, and the upper cover 111 of the vacuum box is opened.
And step 3: putting the semi-solid metal slurry into an inlet of a pressure chamber of a die casting machine 8;
give hot water machine 3 and start, drive spoon 35 to 8 pressure rooms of die casting machine entry, the rotation of spoon 35 pours into 8 pressure rooms of die casting machine with semi-solid metal thick liquids.
And 4, step 4: and (3) starting an injection rod of the die casting machine 8, injecting the semi-solid slurry into the die cavity from the pressure chamber for molding, increasing the start time of the injection rod for 2 seconds, maintaining the pressure for 2 seconds, and cooling for molding. The injection pressure was 50MPa and the injection speed was 3 m/s.
And (3) opening the die of the die casting machine 8, separating the casting following die from the die cavity of the fixed die, starting the ejection mechanism to eject the casting out of the die cavity of the rear die, putting the part taking machine 4 into the middle of the die, clamping the material cake position of the casting by using the claw tongs, taking out the casting and putting the casting on the conveyor belt.
The belt of the conveyor belt 5 and the fan 9 are started, and the casting flows to the end of the oil press 6 along with the belt of the conveyor belt 5, so that cooling is completed.
And (4) putting the cooled casting into a punching die, starting a button 6 of an oil press, and removing a water gap and a slag ladle of the casting to obtain a product blank.
In the step 1, the metal ingot is an aluminum ingot, the aluminum ingot is put into a smelting furnace 2, the first temperature is 660 +/-20 ℃, and the aluminum ingot is melted into liquid aluminum;
in the step 2, the vacuum state in the vacuum box is 85%, the stirring speed is 1000 rpm, and the second temperature is 610 +/-5 ℃, so that the liquid aluminum becomes semi-solid slurry.
In the step 2 and the step 3, liquid aluminum is ladled out of the smelting furnace 2 through a feeding machine 3 and is sent into a vacuum box of the pulping machine 1;
in the embodiment, a die-casting die is installed on a die-casting machine 8, the ratio of a release agent proportioning machine is adjusted to be 1:100, a spraying machine 7 uniformly sprays the release agent on front and rear die surfaces, the spraying machine 7 reciprocates up and down for 3 times, the up and down positions are correspondingly adjusted according to the size of a die, and the die-casting machine 8 starts die assembly and locks the die.
The detection is carried out on the product obtained by implementing the method, and the detection content is as follows:
firstly, metallographic analysis: selecting a plane with the area of 10mm multiplied by 5mm as an inspection surface on the casting obtained by the method, cutting and inlaying the selected sample, polishing the inspection surface into a bright and traceless mirror surface through coarse grinding, fine grinding, mechanical polishing and chemical polishing, corroding the polished inspection surface with hydrofluoric acid for 15 seconds, cleaning with alcohol, and placing under a metallographic microscope for observation, wherein the multiplying power of the microscope is 100 mu m. The metallographic effect is shown in fig. 7, the metallographic structure contains spherical crystals, and the intercrystalline structure is compact.
II, mechanical property: a tensile test method (GB/T228) is adopted, the experimental equipment is a tensile testing machine, a rectangular test piece, the gauge length is 50mm, and the testing speed is 5 mm/min. The test results are given in the following table:
thirdly, heat conducting property: using laser flash (GB/T22588-2008), the test apparatus comprised electronic balance XSE205DU, thermal conductivity meter LFA467, differential scanning calorimeter DSC214, temperature 23.4 ℃, humidity 54% RH, test model Cowan + pulse modification, and the test results are given in the following table:
according to the data, the die-casting product prepared by the semi-solid metal slurry die-casting forming method is improved in mechanical property and heat conductivity compared with the traditional die-casting product. The temperature of the semi-solid slurry is reduced, the temperature of the die is correspondingly reduced, and the service life of the die is synchronously prolonged.
The utility model provides a pulping machine 1, pulping machine 1 includes the vacuum box, and this vacuum box is connected with evacuating device and agitating unit including closing together upper cover 111 and the box 112 that forms airtight space on this upper cover 111, be connected with on this upper cover 111 and order about the actuating mechanism that this box 112 removed relatively upper cover 111, box 112 sets up in upper cover 111 below. The top end of the box body 112 or the bottom end of the upper cover 111 is provided with a sealant layer 113, so that the space in the vacuum box can be isolated from the outside when the upper cover 111 is folded with the box body 112, and the space in the vacuum box is vacuumized by a vacuuming device.
The pulping machine 1 further comprises a machine table 13, a lifting platform 14 is movably arranged on the machine table 13, and the upper cover 111 is fixedly arranged on the lower surface of the lifting platform 14. The lifting platform 14 is driven to lift by a lifting cylinder 15. The lifting cylinder 15 is fixed on a lifting cylinder bottom plate 19, and the output end of the lifting cylinder 15 is fixedly connected with the lifting platform 14.
The stirring device comprises a stirring motor 16 and a stirring rod 12, the stirring rod 12 is fixedly connected with the output end of the stirring motor 16, the stirring motor 16 is arranged on the lifting platform 14, and the stirring rod 12 extends into the upper cover 111.
The vacuum pumping device comprises a vacuum pumping nozzle 17, the vacuum pumping nozzle 17 is fixed on the lifting platform 14, and the tail end of the vacuum pumping nozzle 17 extends into the upper cover 111. In this embodiment, the top end of the vacuum suction nozzle 17 is connected to a vacuum-pumping device through a pipeline, and the vacuum-pumping device is a prior art.
The driving mechanism comprises a screw rod 182 driven to rotate by a driving motor 181, the screw rod 182 is arranged on the machine table 13, a screw rod nut is sleeved on the screw rod 182, the screw rod nut is fixed on a movable support 183, the movable support 183 is connected with the lifting platform 14, specifically, the lifting cylinder bottom plate 19 is fixedly connected with the movable support 183 through a plurality of upright posts 184, and the upright posts 184 penetrate through the lifting platform 14. When the driving cylinder 15 drives the lifting platform 14 to descend, the upper cover 111 and the box body 112 are folded, and a closed space can be formed.
After the liquid metal becomes semi-solid metal slurry in the vacuum chamber, the lifting cylinder 15 drives the lifting platform 14 to ascend, so that the upper cover 111 is separated from the chamber body 112, the driving motor 181 drives the screw rod 182 to rotate, the lifting platform 14 is driven to move, the upper cover 111 is separated from the chamber body 112, and the slurry can be conveniently scooped out by the material spoon.
In this embodiment, the moving bracket 183 is provided with a through hole, and the lead screw nut is fixed in the through hole.
Two guide rails 131 are arranged on the lower surface of the machine table 13 in parallel, the movable support 183 is i-shaped, a sliding part 132 matched with the guide rails 131 is arranged on the movable support 183, and the sliding part 132 is sleeved on the sliding rail, so that the movable support 183 can be driven to slide by the screw rod 182.
The utility model provides a semi-solid metal thick liquids die-casting forming system, its includes die casting machine 8, smelting pot 2, gives hot water machine 3, sprayer 7, reclaimer and aforementioned pulper 1, and this pulper 1 sets up in this die casting machine 8's the portion one side of penetrating, and this smelting pot 2 sets up in 1 right side of pulper, give hot water machine 3 and set up in the right side of smelting pot 2, give hot water machine 3's spoon 35 to correspond pulper 1, smelting pot 2 and die casting machine 8's pressure room setting, this sprayer 7 sets up in die casting machine 8 top, and this reclaimer sets up in this die casting machine 8's the opposite side of penetrating the portion.
In the utility model, a die casting machine 8 is adopted as processing equipment, a smelting furnace 2 is adopted as raw material melting equipment, a pulping machine 1 is adopted as semi-solid slurry preparation equipment, a soup feeder 3 is adopted as slurry transportation equipment, a sprayer 7 is adopted as equipment for spraying a release agent on a die, a piece taking machine 4 is adopted as equipment for taking out a formed casting, a conveyor belt 5 is adopted as casting transportation equipment, an oil press 6 is adopted as equipment for removing a water gap and a slag ladle, the left side of the piece taking machine 4 is provided with the conveyor belt 5, the right side of the piece taking machine 4 is provided with a release agent proportioning machine, and the left side of the conveyor belt 5 is provided with the oil press 6.
This give hot water machine 3 including giving hot water support 31, be equipped with lateral shifting track 32 for hot water support 31, be equipped with sliding base 33 on this lateral shifting track 32 slidable, be equipped with arm 34 on sliding base 33, spoon 35 sets up in this arm 34 is terminal, drives spoon 35 through arm 34, ladles out the metal liquid from smelting pot 2 to the box 112 of vacuum box, and after handling messenger metal liquid becomes semi-solid metal thick liquids, drive spoon 35 by arm 34 again, ladles out semi-solid metal thick liquids to the plenum inlet of die casting machine 8.
The utility model has reasonable and ingenious design, and the pulping machine 1 is arranged, so that the high-temperature metal liquid is changed into the semi-solid metal slurry with relatively low temperature, and the temperature of the slurry is low in the forming process, so that the service life of the die-casting die can be prolonged, the metallographic structure of the product is improved, sand holes and air holes are reduced, and the mechanical property of the product is improved.
The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner. Those skilled in the art can make many possible variations and modifications to the utility model using the above disclosed technical means and teachings, or can modify equivalent embodiments with equivalent variations, without departing from the scope of the utility model. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the technical scheme of the present invention shall be covered by the protection scope of the present invention.
Claims (8)
1. The utility model provides a pulping machine, its characterized in that, pulping machine includes the vacuum chamber, and this vacuum chamber is covered on this and is connected with evacuating device and agitating unit including closing together upper cover and the box that forms airtight space, should, and this is covered on this and is connected with the actuating mechanism that can order about this box relative upper cover and move, the box sets up in the upper cover below, and the top of this box or the bottom of upper cover are equipped with sealing glue layer.
2. The pulper of claim 1, further comprising a machine table, wherein a lifting platform is movably disposed on the machine table, and the upper cover is fixedly disposed on a lower surface of the lifting platform.
3. A pulper according to claim 2, wherein said agitator means comprises a agitator motor and a paddle, said agitator motor being fixedly connected to an output of said agitator motor, said agitator motor being mounted on a lifting platform, said paddle extending into said upper cover.
4. A pulper according to claim 2, characterised in that said evacuation means comprises an evacuation nozzle secured to said lifting platform, the end of said evacuation nozzle extending into said upper cover.
5. The pulper of claim 2, wherein said drive mechanism comprises a lead screw driven by a drive motor to rotate, the lead screw is disposed on the machine platform, a lead screw nut is sleeved on the lead screw, the lead screw nut is fixed on a movable bracket, and the movable bracket is connected with the lifting platform.
6. A pulper according to claim 5, wherein two guide rails are juxtaposed on the lower surface of the machine table, said movable bracket is I-shaped, a sliding member is provided on the movable bracket to cooperate with said guide rails, and said sliding member is sleeved on the slide rails.
7. The utility model provides a semi-solid metal thick liquids die-casting forming system, its characterized in that, it includes die casting machine, smelting pot, gives hot water machine, sprayer, reclaimer and claim 1 pulper, this pulper sets up in the portion one side of penetrating of this die casting machine, and this smelting pot sets up in the pulper right side, set up in the right side of smelting pot for hot water machine, the spoon of giving hot water machine corresponds the pressure chamber setting of pulper, smelting pot and die casting machine, and this sprayer sets up in the die casting machine top, and this reclaimer sets up in the opposite side at the portion of penetrating of this die casting machine.
8. The system for die-casting semi-solid metal slurry according to claim 7, wherein the soup feeder comprises a soup feeding support, the soup feeding support is provided with a transverse moving rail, a sliding base is slidably arranged on the transverse moving rail, the sliding base is provided with a mechanical arm, and the ladle is arranged at the tail end of the mechanical arm.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI815384B (en) * | 2022-03-31 | 2023-09-11 | 惠亞工程股份有限公司 | Die casting machine smelting furnace with automatic cover device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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TWI815384B (en) * | 2022-03-31 | 2023-09-11 | 惠亞工程股份有限公司 | Die casting machine smelting furnace with automatic cover device |
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