CN214977629U - Semi-solid pressure casting forming equipment - Google Patents
Semi-solid pressure casting forming equipment Download PDFInfo
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- CN214977629U CN214977629U CN202121230913.4U CN202121230913U CN214977629U CN 214977629 U CN214977629 U CN 214977629U CN 202121230913 U CN202121230913 U CN 202121230913U CN 214977629 U CN214977629 U CN 214977629U
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Abstract
The utility model provides a semi-solid pressure casting forming device, which comprises a frame, a smelting tundish, an inclined plate device and a pressure casting device, wherein the smelting tundish, the inclined plate device and the pressure casting device are sequentially and hermetically connected on the frame; the melting tundish is provided with a melt flow channel, the melt flow channel is communicated with a melt shearing channel in the inclined plate device, the melt shearing channel is communicated with a material injection chamber of the pressure casting device, and the setting heights of the melt flow channel, the melt shearing channel and the material injection chamber are sequentially decreased progressively. Mechanical hand and fuse-element transfer process have been saved to former to realized the short flow online preparation of high efficiency of semi-solid state thick liquids, improved fuse-element treatment effeciency by a wide margin.
Description
Technical Field
The utility model belongs to the technical field of semi-solid metal material processing, a semi-solid pressure casting former is related to.
Background
The semi-solid pressure casting is a casting method that semi-solid metal is injected into a metal casting mold at high speed and is crystallized under pressure, has unique advantages in the aspects of uniformity of components and structures, improvement of comprehensive mechanical properties of formed parts, reduction of internal defects of formed parts and the like, and the produced product has the characteristics of high dimensional precision, good surface quality and the like; meanwhile, the equipment has high productivity, is easy for large-scale industrial production, can produce thin-wall castings with complex shapes, belongs to a special casting method with less cutting and no cutting, has the advantages of net forming, high quality, high performance and the like, and is one of important forming technologies in the field of semi-solid metal material processing.
Although the semi-solid pressure casting technology has the advantages of short flow, high efficiency and the like, in the existing semi-solid pressure casting technology, the whole metal liquid in the tundish can be transferred to the pressure casting equipment to start production after ultrasonic/electromagnetic/mechanical vibration treatment (or combination of the two) is finished, the melt is kept warm for a long time in the production process, the energy consumption of the melt treatment is high, the energy conservation and emission reduction are not facilitated, and the phenomena of oxidation burning loss and hydrogen absorption are serious in the long-time heat preservation process of the melt; the semi-solid metal liquid is transferred into the injection chamber manually or by a mechanical arm matched with a pressure casting machine, during the transfer process, secondary oxidation, hydrogen absorption and unnecessary impurity introduction are inevitable to occur on the melt, and the temperature drop is inevitably caused during the transfer process, so that the temperature is required to be raised to a higher temperature before the melt is transferred; the smelting furnace, the manipulator and the pressure casting equipment are all arranged at a certain distance, so that the floor area of the whole set of equipment is increased, and the production flow is long; the cost of the matching equipment such as the mechanical arm is high, the maintenance is complicated, and the application and the popularization of the pressure casting technology are seriously limited.
SUMMERY OF THE UTILITY MODEL
The technical task of the utility model is not enough to above prior art, provides a semi-solid state pressure casting former, will smelt equipment, slurrying equipment and the high-efficient combination of pressure casting equipment, saved manipulator and melt transfer process, realized the high-efficient short flow online preparation of semi-solid state thick liquids, improve melt treatment efficiency by a wide margin.
The utility model provides a technical scheme that its technical problem adopted is:
a semi-solid pressure casting forming device comprises a frame, a smelting tundish, an inclined plate device and a pressure casting device, wherein the smelting tundish, the inclined plate device and the pressure casting device are arranged on the frame and are sequentially connected in a sealing manner; the melting tundish is provided with a melt flow channel, the melt flow channel is communicated with a melt shearing channel in the inclined plate device, the melt shearing channel is communicated with a material injection chamber of the pressure casting device, and the setting heights of the melt flow channel, the melt shearing channel and the material injection chamber are sequentially decreased progressively.
Furthermore, the inclined plate device comprises an inclined plate, an upper sealing cover and a lower sealing cover of the inclined plate, the inclined plate is installed on the lower sealing cover of the inclined plate, a cooling cavity for containing cooling liquid is arranged in the lower sealing cover of the inclined plate, and a melt shearing channel is formed between the inclined plate and the upper sealing cover of the inclined plate.
Furthermore, the surface structure of the inclined plate body is fin-shaped or S-shaped or straight rod-shaped, the width of the plate body is 150-1000 mm, the length of the plate body is 800-2000 mm, and the inclination angle is 5-85 degrees.
Furthermore, the upper sealing cover and the inclined plate of the inclined plate are detachably mounted, and an ultrasonic and vibrating device is arranged below the lower sealing cover of the inclined plate.
The metal melt injection molding machine further comprises a melt injection chamber, a melt injection system and a mold, wherein the metal melt is injected into the melt injection chamber and then is pressed into the mold through the melt injection system.
Furthermore, a melt filtering device and an electromagnetic valve for controlling the opening and closing of the melt channel opening are arranged at the melt channel opening of the smelting tundish.
Furthermore, the smelting tundish comprises a crucible and an electromagnetic stirring and heating device arranged at the bottom of the crucible, and the melt runner is arranged at the lower part of the side wall of the crucible.
Further, the mold is assembled in a mold cavity of the pressure casting device, and different molds are equipped according to different product requirements.
Further, the pressure casting device comprises a mold adjusting and locking system for controlling the mold.
The forming method based on the semi-solid pressure casting forming equipment comprises the following steps:
(1) smelting and heat preservation: putting the weighed metal materials into a smelting tundish, smelting when the equipment is in a vacuum state, and carrying out heat preservation and electromagnetic stirring treatment on the melt;
(2) inclined plate melt treatment: opening a melt runner, enabling the melt obtained in the step (1) to flow into a melt shearing channel through the melt runner, and enabling the melt to flow into a material injection chamber in a vacuum state after the melt flows through an inclined plate device and is converted into semi-solid slurry;
(3) injection molding: when the semi-solid slurry obtained in the step (2) with the volume of 40-60% of that of the injection chamber flows into the injection chamber, closing a melt runner, and performing pressure casting forming through an injection system;
(4) opening the mold: after the injection molding is completed, the product is taken out.
Furthermore, the forming method is suitable for preparing the non-ferrous alloy semi-solid pressure casting products of pure alloy, aluminum alloy, magnesium alloy, tin alloy and copper alloy which are easy to oxidize and burn.
Further, the step (2) further comprises simultaneously subjecting the melt to ultrasonic and mechanical vibration treatment while passing through the shear cooling channel by an ultrasonic and vibration device disposed below the inclined plate device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a semi-solid state pressure casting forming device, which combines the smelting device, the pulping device and the pressure casting device with high efficiency, compared with the traditional semi-solid state pulping device and the pressure casting device, the utility model realizes the high-efficiency on-line preparation of semi-solid state slurry, and improves the melt processing efficiency greatly by using and preparing, and saves the waiting time and the heat preservation time of slurry preparation;
2. the equipment of the utility model can be used for production without transferring the melt, thereby avoiding the melt pollution caused by the transfer of the melt during production; expensive mechanical arms used in the transfer process of the pressure casting melt are omitted, the occupied area of equipment is reduced, and the production flow of products is shortened;
3. the equipment of the utility model has the advantages of energy saving and emission reduction, greatly reduces the production cost of enterprises, and is easier for industrialized continuous production; is especially suitable for the high-efficiency and short-process preparation of non-ferrous alloy products of pure alloy, aluminum alloy, magnesium alloy, tin alloy and copper alloy which are easy to oxidize and burn.
4. The utility model discloses an electromagnetic stirring, supersound, mechanical vibration device carry out triple compound fuse-element and handle, have realized the high-efficient online preparation of semi-solid state thick liquids.
Drawings
FIG. 1 illustrates a semi-solid pressure casting apparatus according to the present invention;
FIG. 2 is a schematic diagram of the metallographic structure of an A356 alloy product prepared by the equipment of the utility model;
FIG. 3 is a schematic metallographic structure of an A356 alloy product prepared by a conventional device;
reference numerals: 1-smelting a tundish; 2-electromagnetic stirring heating coil; 3-high purity graphite crucible; 4-a melt filtration device; 5-an electromagnetic valve; 6-a melt runner; 7-high temperature resistant rubber ring; 8-sealing the upper cover of the inclined plate; 9-inclined plates; 10-inclined plate lower sealing cover; 11-ultrasonic, mechanical composite vibratory devices; 12-a shooting pot; 13-a shot system; 14-a mould; 15-adjusting the mold locking system; 16-machine frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples
A semi-solid pressure casting forming device is shown in figure 1, and comprises a frame 16, a smelting tundish 1, an inclined plate device and a pressure casting device which are arranged on the frame and are sequentially connected in a sealing way; a melt flow channel 6 is arranged on the smelting tundish and is communicated with a melt shearing channel in the inclined plate device; the inclined plate device comprises an inclined plate 9, and an inclined plate upper sealing cover and an inclined plate lower sealing cover (8, 10), wherein the inclined plate is arranged on the inclined plate lower sealing cover, a cooling cavity for containing cooling liquid is arranged in the inclined plate lower sealing cover, and a melt shearing channel is formed between the inclined plate and the inclined plate upper sealing cover; the pressure casting device comprises a melt injection chamber 12, a melt injection system 13 and a mold 14, wherein a melt shearing channel is communicated with the melt injection chamber, and metal melt is pressed into the mold through the melt injection system after entering the melt injection chamber; the arrangement heights of the melt flow channel, the melt shearing channel and the injection chamber are sequentially decreased, and the melt flows into the melt shearing channel and the injection chamber by utilizing the gravitational potential energy of the melt.
In the embodiment, the smelting tundish, the inclined plate device and the pressure casting device are sequentially connected in a sealing manner, so that the phenomena of oxidation, burning loss and hydrogen absorption of a melt in the smelting and heat preservation processes, the inclined plate melt treatment process and the injection molding process are avoided; the upper end and the lower end of the upper sealing cover and the lower sealing cover of the inclined plate device are respectively in flexible connection with a melt flow channel of a smelting tundish and a material injection chamber of a pressure casting device through a high-temperature resistant rubber ring 7, the lower end of the inclined plate device is provided with a closing-in, and the size of the closing-in is matched with the size of a material injection chamber opening of the pressure casting device.
As an improvement of the technical scheme, the smelting tundish comprises a crucible and an electromagnetic stirring and heating device arranged at the bottom of the crucible, and the melt runner 6 is arranged at the lower part of the side wall of the crucible; the smelting tundish is internally provided with various types of high-purity graphite crucibles 3 which can contain 50 kg-1000 kg of melt; the electromagnetic stirring heating device comprises an electromagnetic stirring heating coil 2 arranged in the smelting tundish, and can carry out electromagnetic stirring treatment on the melt while carrying out smelting heat preservation on the metal material; the bottom of the high-purity graphite crucible is provided with a runner port and is connected with a melt runner, the runner port is provided with a melt filtering device 4 and is provided with an electromagnetic valve 5 for controlling the flow of the melt in the high-purity graphite crucible by opening and closing a melt runner port switch.
As an improvement of the technical scheme, the upper sealing cover and the inclined plate of the inclined plate are detachably mounted, so that bonded metal materials can be conveniently cleaned, the width of the plate body of the inclined plate is 150-1000 mm, the length of the plate body of the inclined plate is 800-2000 mm, an ultrasonic and mechanical composite vibration device 11 is arranged below (behind) the lower sealing cover of the inclined plate, and tangential or normal vibration can be carried out on melt flowing through the inclined plate body by adjusting the vibration direction of the vibration device; the lower sealing cover of the inclined plate can be filled with cooling water, so that the melt flowing through the inclined plate body can be cooled.
As the improvement of technical scheme, the inclined plate body surface structure is fin shape or S-shaped or straight rod shape, shunts the fuse-element into 2 ~ 10 strands, realizes that the fuse-element is furthest' S on the body to spread, and inclined plate inclination is 5 ~ 85, and the accessible is equipped with hydraulic means and realizes the regulation of inclined plate device inclination.
As a technical improvement, the pressure casting device comprises a mold adjusting and locking system 15 for controlling a mold, the mold is assembled in a mold cavity of the pressure casting device, and different molds are prepared according to different product requirements.
The forming method based on the semi-solid pressure casting forming equipment adopts the following parameters: the capacity of the high-purity graphite crucible is 50kg, the width of the inclined plate body is 200mm, the length of the inclined plate body is 1000mm, a straight rod-shaped inclined plate body is adopted, the melt can be divided into 3 strands, and the inclination angle of the inclined plate is 45 degrees;
the method comprises the following steps:
(1) smelting and heat preservation: putting a commercial A356 alloy ingot into a smelting tundish, turning on an electromagnetic stirring heating device when the equipment is in a vacuum state, regulating the temperature to 700 ℃ for smelting, and carrying out heat preservation and electromagnetic stirring treatment on the molten melt;
(2) inclined plate melt treatment: introducing cooling water into the lower sealing cover of the inclined plate, opening an ultrasonic and mechanical vibration device, opening an electromagnetic valve, opening a melt flow channel, allowing the melt obtained in the step (1) to flow into a melt shearing channel through the melt flow channel, performing ultrasonic and mechanical vibration treatment on the melt while performing shearing cooling treatment on the melt, and allowing the melt to flow into a melt injection chamber in a vacuum state after the melt flows through the plate body of the inclined plate and is converted into high-quality semi-solid slurry;
(3) injection molding: adjusting a mold adjusting and locking system to fix and lock a pre-installed mold, when the semi-solid slurry obtained in the step (2) with the volume of 50% of the injection chamber flows into the injection chamber, closing a melt flow channel, opening the injection system, and rapidly punching the melt into the mold by using a piston to finish pressure casting forming;
(4) opening the mold: and after the injection molding is finished, adjusting the mold adjusting system and the mold locking system to open the mold, and taking out the A356 die-casting product.
The metallographic structure of the product is as shown in figure 2, compare the metallographic structure (figure 3) of the pressure casting product prepared by the existing smelting-semi-solid slurry preparation-mechanical arm transfer melt-die-casting forming method with the A356 alloy prepared by the utility model, the A356 alloy product crystal grain prepared by the utility model is fine spherical crystal and rose crystal, the mechanical property of the product is greatly improved, and the prepared product has smooth surface and no oxidation and air hole inclusion.
Above technical scheme has explained the utility model discloses a technical thought can not injecing with this the utility model discloses a protection scope, all do not break away from the utility model discloses technical scheme's content, the basis the utility model discloses a technical entity all belongs to any change and the decoration of above technical scheme to what do the utility model discloses a technical scheme's protection scope.
Claims (9)
1. The semi-solid pressure casting forming equipment is characterized by comprising a rack, a smelting tundish, an inclined plate device and a pressure casting device, wherein the smelting tundish, the inclined plate device and the pressure casting device are arranged on the rack and are sequentially connected in a sealing manner; the melting tundish is provided with a melt flow channel, the melt flow channel is communicated with a melt shearing channel in the inclined plate device, the melt shearing channel is communicated with a material injection chamber of the pressure casting device, and the setting heights of the melt flow channel, the melt shearing channel and the material injection chamber are sequentially decreased progressively.
2. A semi-solid state pressure casting forming apparatus according to claim 1, wherein the inclined plate means includes an inclined plate, and upper and lower inclined plate covers, the inclined plate being mounted on the lower inclined plate cover, a cooling chamber for receiving a cooling fluid being provided in the lower inclined plate cover, and a melt shear channel being formed between the inclined plate and the upper inclined plate cover.
3. The semi-solid pressure casting forming device according to claim 2, wherein the surface structure of the inclined plate body is fin-shaped, S-shaped or straight rod-shaped, the width of the plate body is 150 mm-1000 mm, the length of the plate body is 800 mm-2000 mm, and the inclination angle is 5-85 °.
4. A semi-solid state pressure casting forming apparatus according to claim 2, wherein the upper cover and the lower cover are detachably mounted, and an ultrasonic vibration device is disposed below the lower cover.
5. The semi-solid pressure casting apparatus of claim 1, wherein the melt runner port of the melting tundish is provided with a melt filtering device and a solenoid valve for controlling the opening and closing of the melt runner port.
6. The apparatus of claim 1, wherein the melting tundish includes a crucible and an electromagnetic stirring heater disposed at a bottom of the crucible, and the melt channel is disposed at a lower portion of a sidewall of the crucible.
7. The apparatus of claim 1, wherein the die casting apparatus comprises a shot chamber for the molten metal, a shot system and a die, and the molten metal is introduced into the shot chamber and then forced into the die by the shot system.
8. A semi-solid state pressure casting forming apparatus as claimed in claim 7, wherein the mold is assembled within a mold cavity of a pressure casting device, and different molds are provided for different product requirements.
9. A semi-solid state pressure casting forming apparatus according to claim 7, wherein the pressure casting device includes a mode adjustment and locking system for controlling the mold.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121230913.4U CN214977629U (en) | 2021-06-03 | 2021-06-03 | Semi-solid pressure casting forming equipment |
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| CN202121230913.4U CN214977629U (en) | 2021-06-03 | 2021-06-03 | Semi-solid pressure casting forming equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113182502A (en) * | 2021-06-03 | 2021-07-30 | 东北大学 | Semi-solid pressure casting forming equipment and forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182502A (en) * | 2021-06-03 | 2021-07-30 | 东北大学 | Semi-solid pressure casting forming equipment and forming method |
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