CN111872331A - Water cooling device and method for indium casting - Google Patents

Abstract

The invention relates to a water-cooling device for indium casting. The water-cooling device includes a high-level tank, a low-level tank, a plurality of cooling plates, and a number of cooling water collection tanks. The high-level tank is provided with a cooling water inlet. The indium is cast in the cooling plate and cooled. The water collection tank corresponds to the cooling pan one-to-one and is located below the cooling pan. The high-level tank uses gravity or centrifugal pump to transport the low-temperature cooling water to each cooling pan through the pipeline. The cooling pan collects the cooling water through the holes at the bottom of the pan. The collection tank, the cooling water collection tank transports the cooling water to the low level tank through the pipeline, and the low level tank transmits the cooling water to the high level tank through the centrifugal pump. The present invention adopts the automatic circulating water cooling method to cast the indium ingot, and the indium ingot can be rapidly cooled. Compared with the cooling method of natural cooling in the prior art, the production efficiency is improved while the purity of the indium ingot is ensured. The indium ingot has a smooth appearance, no holes, shrinkage holes, cracks and other undesirable phenomena.

Description

Water cooling device and method for indium casting

technical field

The invention relates to the field of high-purity sparse metal preparation, in particular to a water cooling device and method for indium casting.

Background technique

Indium is an important rare metal. Because of its unique and excellent physical and chemical properties, it is widely used in the fields of electronic computers, energy, electronics, optoelectronics, semiconductors, defense and military, and aerospace. Indium metal ingots are mainly used for the production of ITO targets, special solders for integrated circuits, high-performance alloys, etc. According to the indium standard YS/T257-1998, the purity of indium ingots obtained by casting must reach more than 99%, and the requirements for the casting production line are very strict . In the current indium ingot production enterprises, most of them still use the natural cooling method, which not only has low production efficiency, but also has a low purity pass rate of the obtained cast indium ingots, and the weight error of each ingot is large and the consistency is poor, which cannot meet the subsequent production requirements. Therefore, improving the qualification rate of the purity and appearance of the metal indium ingot is an urgent problem to be solved at present, and the main link that determines the purity and appearance of the metal indium ingot lies in the casting stage.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a water cooling device and method for indium casting, which can cast and produce indium ingots that meet the requirements of purity and appearance of indium ingots at the same time.

In order to achieve the aforementioned purpose, the present invention adopts the following technical scheme: an indium casting water cooling device, the water cooling device includes a high-level tank, a low-level tank, a number of cooling plates, and a number of cooling water collection tanks, the high-level tank is provided with a cooling water inlet, and the indium tank is provided with a cooling water inlet. It is cast and cooled in the cooling pan. The cooling water collection tank corresponds to the cooling pan and is located under the cooling pan. The high-level tank uses gravity or centrifugal pump to transport the low-temperature cooling water to each cooling pan through the pipeline. The cooling pan passes through the bottom of the pan. The holes of the cooling water collect the cooling water to the cooling water collection tank, the cooling water collection tank transports the cooling water to the lower level tank through the pipeline, and the lower level tank transports the cooling water to the high level tank through the centrifugal pump.

As a further improvement of the present invention, the water cooling device further includes a plurality of air-cooling units, and the air-cooling units are communicated with the high-level tank through a plurality of pipes.

As a further improvement of the present invention, the cooling plate is divided into three parts, the middle part is the cooling module, and the two side parts are the collection modules.

As a further improvement of the present invention, the cooling tray includes several support columns, the support columns penetrate the cooling module laterally or longitudinally; the cooling water can submerge the support columns.

As a further improvement of the present invention, the high-level tank is provided with three water delivery pipelines - a first water delivery pipeline, a second water delivery pipeline, and a third water delivery pipeline.

As a further improvement of the present invention, the first water conveyance pipeline is connected to the low level tank, and the cooling water in the low level tank is transported to the high level tank through the first water conveyance pipeline through the action of the centrifugal pump.

As a further improvement of the present invention, the third water pipeline is connected to the air-cooled unit, and the cooling water in the high-level tank is transported to the air-cooled unit through the third water pipeline to reduce to ambient temperature and re-transmitted to the high-level tank.

As a further improvement of the present invention, an observation port is designed on the high-level groove.

As a further improvement of the present invention, the high-level tank, the cooling water collection tank and the low-level tank are all made of PP board as the preparation material.

The present invention also proposes a water cooling method for indium casting, using the above-mentioned indium casting water cooling device, which includes the following steps:

S1. Heat the solid indium to a liquid state, keep the temperature of the liquid indium at 200±15°C, heat the casting mold to a temperature 10-15°C lower than the temperature of the liquid indium, and place the heated casting mold into the support in the cooling plate On the column, the electronic weighing scale is reset to zero; the liquid indium is slowly poured into the casting mold; after each row of casting molds is cast, a heated graphite or titanium cover plate is used to cover the top of the casting mold;

S2. Pass the cooling water into the cooling water inlet of the high-level tank, and gradually pass the cooling water into the cooling pan through the pipeline, the cooling water immerses the support column, and the cooling water is in direct contact with the casting mold. When the cooling water level in the cooling pan reaches the set point After the height is fixed, the liquid level relay will automatically cut off the power and stop the cooling water. After a certain period of time, the liquid indium in the casting mold will be cooled to a solid state, and the cooling water will flow into the cold water collection tank from the hole at the bottom of the cooling plate;

S3. Repeat S2 until the cooling water in the cooling water collection tank reaches the set liquid level, and the cooling water in the cooling water collection tank will automatically flow into the low-level tank by gravity through the pipeline;

S4. After the cooling water in the low-level tank reaches the specified liquid level, the water pump controlled by the liquid level relay starts, and the cooling water in the low-level tank is sent to the high-level tank;

S5. The cooling water sent into the high-level tank is cooled by the air-inlet cooling unit and then re-entered into the high-level tank through the water pump. At this time, the cooling water in the high-level tank has been cooled to room temperature, and the cooling water can enter the cooling plate again through the pipeline. So far, the recycling of cooling water is completed.

The present invention adopts the automatic circulating water cooling method to cast the indium ingot, and the indium ingot can be rapidly cooled. Compared with the cooling method of natural cooling in the prior art, the production efficiency is improved while the purity of the indium ingot is ensured. The appearance of the ingot is smooth, and there are no bad phenomena such as holes, shrinkage holes, cracks, etc., which meet the requirements of the appearance of indium ingots with a smooth and smooth surface, and provide quality assurance for subsequent applications.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of an indium cast water cooling device of the present invention.

FIG. 2 is a structural diagram of a cooling plate in an embodiment of an indium cast water cooling device of the present invention.

3 is a structural diagram of a high-level tank in an embodiment of an indium-cast water cooling device of the present invention.

4 is a structural diagram of a low-level tank in an embodiment of an indium-cast water cooling device of the present invention.

Detailed ways

The technical solutions will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on those shown in the accompanying drawings The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The present invention provides an indium casting water cooling device 100. Please refer to FIG. 1. The water cooling device 100 includes a high-level tank 110, a low-level tank 120, a plurality of cooling disks 130, and a cooling water collection tank 140. The high-level tank 110 is provided with a cooling water inlet 111. The cooling water collecting tank 140 corresponds to the cooling plate 130 and is located under the cooling plate 130. The indium is cast and cooled in the cooling plate 130. In the pan 130, the cooling pan 130 collects the cooling water into the cooling water collection tank 140 through the holes 133 at the bottom of the pan, and the cooling water collection tank 140 transports the cooling water to the lower tank 120 through the pipeline, and the lower tank 120 passes the cooling water through the centrifugal pump 160. Transported to the high level tank 110.

The water cooling device 100 further includes a plurality of air cooling units 150, and the air cooling units 150 are communicated with the high-level tank 110 through a plurality of pipes. The air-cooled unit 150 can lower the temperature of the cooling water from the high-level tank 110 to the ambient temperature under the action of the wind force and re-transmit it to the high-level tank 110 .

Please refer to FIGS. 3 and 4 , the high-level slot 110 is a hollow cuboid structure as a whole. An observation port 112 is designed above the high-level tank 110 at the center left position. The purpose of setting the observation port 112 is to observe whether the high-level tank 110 can work normally and whether the cooling water therein is blocked or leaked. In some embodiments of the present invention, a cover with a handle can be added to the high-level slot 110 to cover the observation port 112 when no observation operation is required, so as to prevent foreign objects such as dust from falling into the high-level slot 110 .

The high-level tank 110 is provided with three water pipelines—a first water pipeline 114, a second water pipeline 113, and a third water pipeline 115. The second water pipeline 113 is a tap water pipeline, and the second water pipeline 113 is connected to cooling water. The water inlet 111 is connected, and the tap water enters the second water pipeline 113 and the high-level tank 110 through the cooling water inlet 111 to provide the water cooling device 100 with initial water resources.

The first water delivery pipeline 114 is connected to the lower level tank 120 , and the cooling water in the lower level tank 120 is conveyed to the upper level tank 110 through the first water delivery pipeline 114 through the action of the centrifugal pump 160 .

The third water pipeline 115 is connected to the air-cooled unit 150 , and the cooling water in the high-level tank 110 is transported to the air-cooled unit 150 through the third water pipeline 115 to be cooled to the ambient temperature and re-transmitted to the high-level tank 110 to realize rapid cooling of the cooling water and recycling.

Please refer to FIG. 2 , the cooling plate 130 is an indium casting plate, in the shape of a cuboid without a lid, and is formed by welding titanium metal plates. The cooling plate 130 is divided into three parts, and the three parts are separated by two titanium metal plates, and the middle part is the cooling module 131, which is used to place and cool the casting mold (the casting mold is the place where indium is cast, as shown in the figure). Not shown), the two sides are the collection modules 132; the function of the collection modules 132 is to collect the liquid metal dropped from the lower part of the titanium scoop during the casting operation, so as to realize the recycling of the dropped metal.

The cooling pan 130 includes a number of support columns 134 , which penetrate the cooling module 131 or the collecting module 132 laterally or longitudinally. The support column 134 is used to support the casting mold. The cooling water can submerge the support column 134, so that the casting mold placed in the cooling module 131 is in direct contact with the cooling water, thereby being cooled by the cooling water.

The liquid level of the cooling water in the cooling plate 130 is controlled by a liquid level relay (not shown in the figure), and the sensing line of the liquid level relay measures the liquid level height, and the water addition can be automatically stopped when the set liquid level height is reached.

There are several holes 133 at the bottom of the cooling pan 130 for drainage.

The cooling water collection tank 140 is located just below the cooling pan 130 for collecting the cooling water discharged from the cooling pan 130 . The overall shape of the cooling water collection tank 140 is a rectangular parallelepiped without a cover. In order to facilitate the observation of whether the cooling water in the cooling water collection tank 140 is blocked, the cooling water collection tank 140 is designed to have a coverless structure. In some embodiments of the present invention, the cooling water collection tank 140 may also be provided with a rectangular shape with a handle. The tank cover, the cooling water collection tank 140 when not in use, the tank cover can cover the cooling water collection tank 140 to prevent sundries from entering the cooling water collection tank 140 .

At least one water outlet is designed below the cooling water collection tank 140 so that the cooling water in the cooling water collection tank 140 can naturally flow to the lower tank 120 by gravity.

The lower slot 120 has a rectangular parallelepiped structure as a whole. An observation window 121 is designed above it, the purpose of which is to observe whether the water flowing into the lower tank 120 from the cooling water collection tank 140 is blocked or leaked during the casting process. In some embodiments of the present invention, a cover with a handle can be added to the lower slot 120 to cover the observation window 121 when no observation operation is required to prevent foreign objects such as dust from falling into the lower slot 120 .

The low-level tank 120 is designed with at least one water supply interface, so that the cooling water in the low-level tank 120 is transported by the centrifugal pump 160 to the high-level tank 110, thereby realizing the recycling of water resources.

Considering the requirements of water storage, acid resistance, corrosion resistance, economical and practical, etc., the high-level tank 110, the low-level tank 120, and the cooling water collection tank 140 are all made of PP board as the preparation material.

Between different components of the water cooling device 100, a ball valve or a solenoid valve for controlling whether the cooling water is communicated is provided, and the ball valve and the solenoid valve are uniformly controlled by a control component (not shown in the figure).

The present invention also provides a water cooling method for indium casting, using the above-mentioned indium casting water cooling device 100, which includes the following steps:

S1. Heat the solid indium to a liquid state, keep the temperature of the liquid indium at 200±15°C, heat the casting mold to a temperature 10-15°C lower than the temperature of the liquid indium, and place the heated casting mold into the support in the cooling plate On the column 134, the electronic weighing scale is reset to zero; the liquid indium is slowly poured into the casting mold; after each row of casting molds is cast, a heated graphite or titanium cover plate is used to cover the top of the casting mold;

S2. The cooling water is introduced into the cooling water inlet 111 of the high-level tank 110, and the cooling water is gradually introduced into the cooling plate 130 through the pipeline, the cooling water immerses the support column 134, and the cooling water is in direct contact with the casting mold. When the cooling water in the cooling plate 130 is cooled After the water level reaches the set height, the liquid level relay will automatically cut off the power supply and stop the cooling water. After a certain period of time, the liquid indium in the casting mold will be cooled to a solid state, and the cooling water will flow into the cold water collection tank 140 from the bottom hole of the cooling plate 130. ;

S3. Repeat S2 until the cooling water in the cooling water collection tank 140 reaches the set liquid level, and the cooling water in the cooling water collection tank 140 will automatically flow into the low-level tank by gravity through the pipeline;

S4. After the cooling water in the low-level tank reaches the specified liquid level, the water pump controlled by the liquid level relay is started, and the cooling water in the low-level tank 120 is sent to the high-level tank 110;

S5. The cooling water sent into the high-level tank 110 is cooled by the air inlet cooling unit 150 and then re-entered into the high-level tank 110 through the water pump. At this time, the cooling water in the high-level tank 110 has been cooled to room temperature, and the cooling water can pass through the pipeline again. Enter the cooling pan 130, and the recycling of the cooling water is now completed.

After cooling, transfer the casting mold in the cooling tray to the silicone pad of the product demolding console for demoulding, and the obtained indium ingot product has a bright surface, no yellowing, holes, delamination and other undesirable phenomena, and the purity is high, reaching Appearance standard of indium ingots at home and abroad.

The present invention adopts the automatic circulating water cooling method to cast the indium ingot, and the indium ingot can be rapidly cooled. Compared with the cooling method of natural cooling in the prior art, the production efficiency is improved while the purity of the indium ingot is ensured. The appearance of the ingot is smooth, and there are no bad phenomena such as holes, shrinkage holes, cracks, etc., which meet the requirements of the appearance of indium ingots with a smooth and smooth surface, and provide quality assurance for subsequent applications.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those of ordinary skill in the art will appreciate that various Improvements, additions and substitutions are possible.

Claims (10)

1. The utility model provides a water cooling plant of indium casting which characterized in that: the water cooling device comprises a head tank, a low tank, a plurality of cooling trays, a plurality of cooling water collecting tanks, wherein the head tank is provided with a cooling water inlet, indium is cast and cooled in the cooling trays, the cooling water collecting tanks correspond to the cooling trays one by one and are located below the cooling trays, the head tank utilizes gravity or a centrifugal pump to convey low-temperature cooling water to each cooling tray through a pipeline, the cooling water collecting tanks are collected by the holes at the bottoms of the cooling trays through cooling water, the cooling water collecting tanks convey the cooling water to the low tank through the pipeline, and the low tank conveys the cooling water to the head tank through the centrifugal pump.

2. The indium-casted water cooling device as claimed in claim 1, characterized in that: the water cooling device also comprises a plurality of air cooling units, and the air cooling units are communicated with the elevated tank through a plurality of pipelines.

3. The indium-casted water cooling device as claimed in claim 2, characterized in that: the cooling plate is divided into three parts, the middle part is a cooling module, and the two side parts are collecting modules.

4. The indium-casted water cooling device as claimed in claim 3, characterized in that: the cooling disc comprises a plurality of supporting columns, and the supporting columns transversely or longitudinally penetrate through the cooling module; the cooling water is able to submerge the support columns.

5. The indium-casted water cooling device as claimed in claim 4, characterized in that: the elevated tank is provided with three water conveying pipelines, namely a first water conveying pipeline, a second water conveying pipeline and a third water conveying pipeline.

6. The indium-casted water cooling device as claimed in claim 5, characterized in that: the first water pipe is connected with the low-level tank, and cooling water in the low-level tank is conveyed into the high-level tank through the first water pipe under the action of a centrifugal pump.

7. The indium-casted water cooling device as claimed in claim 6, characterized in that: the second water conveying pipeline is communicated with the cooling water inlet.

8. The indium-casted water cooling device as claimed in claim 7, characterized in that: the third water pipeline is connected with the air cooling unit, and the cooling water in the elevated tank is conveyed to the air cooling unit through the third water pipeline, is reduced to the ambient temperature and is conveyed to the elevated tank again.

9. The indium-casted water cooling device as claimed in claim 8, characterized in that: the elevated tank is provided with an observation port.

10. A water cooling method for indium casting, which uses the water cooling apparatus for indium casting according to claim 9, characterized in that: which comprises the following steps:

s1, heating the solid indium to be in a liquid state, keeping the temperature of the liquid indium at 200 +/-15 ℃, heating the casting mold to be 10-15 ℃ lower than the temperature of the liquid indium, placing the casting mold after temperature rise on a support column in a cooling disc, and enabling the electronic weighing to return to zero; slowly pouring liquid indium into a casting mold; after each row of casting molds are cast, covering the top of each casting mold with a graphite or titanium cover plate which is heated;

s2, introducing cooling water into a cooling water inlet of the elevated tank, gradually introducing the cooling water into the cooling tray through a pipeline, immersing the support columns in the cooling water, directly contacting the cooling water with the casting mold, sensing automatic power-off by a liquid level relay to stop introducing the cooling water after the liquid level of the cooling water in the cooling tray reaches a set height, keeping for a certain time, cooling the liquid indium in the casting mold to be solid, and allowing the cooling water to flow into a cold water collecting tank from a hole at the bottom of the cooling tray;

s3, repeating S2 until the cooling water in the cooling water collecting tank reaches a set liquid level height, and enabling the cooling water in the cooling water collecting tank to automatically flow into a low-level tank through a pipeline under the action of gravity;

s4, after the cooling water in the low-level tank reaches the designated liquid level, starting a water pump controlled by a liquid level relay, and sending the cooling water in the low-level tank into the high-level tank;

and S5, feeding the cooling water into the elevated tank, cooling the cooling water by the air inlet cooling unit, inputting the cooling water into the elevated tank again by the water pump, cooling the cooling water in the elevated tank to room temperature, and enabling the cooling water to enter the cooling disc again through the pipeline, so that the cyclic utilization of the cooling water is completed.

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