Casting device for magnesium alloy vacuum melting

Abstract

The utility model relates to the technical field of magnesium alloy casting, in particular to a casting device for magnesium alloy vacuum melting, which comprises a sealing crucible, a sealing cover, a casting pipe, a double-layer funnel and a crystallizer. The sealing cover is detachably connected with the sealing crucible and located at the top of the sealing crucible, the casting pipe is detachably connected with the sealing cover, penetrates through the sealing cover and the double-layer funnel and is detachably connected with the casting pipe and located at the end, away from the sealing cover, of the casting pipe, and the crystallizer is detachably connected with the double-layer funnel and located at the bottom of the double-layer funnel. The problems that liquid flowing speed cannot be accurately controlled through gravity casting, and pressure casting is high in cost, complex in operation and not suitable for large-scale production are solved.

Description

Technical Field

[0001] This utility model relates to the field of magnesium alloy casting technology, and in particular to a casting device for vacuum melting of magnesium alloys. Background Technology

[0002] Traditional magnesium alloy casting methods, such as gravity casting, result in rapid oxidation due to the large surface area of ​​the molten magnesium in contact with air. This makes precise control of the molten magnesium flow difficult, leading to oxidation and inclusions. Furthermore, the inability to precisely control the flow rate causes casting quality problems. While pressure casting can improve casting quality, it is costly and complex, making it unsuitable for large-scale production. Utility Model Content

[0003] The purpose of this invention is to provide a casting device for vacuum melting of magnesium alloys, which solves the problems of gravity casting being unable to accurately control the flow rate of liquid, and pressure casting being costly, complex to operate, and unsuitable for large-scale production.

[0004] To achieve the above objectives, this utility model provides a casting apparatus for vacuum melting of magnesium alloys, comprising a sealed crucible, a sealed cover, a casting pipe, a double-layer funnel, and a crystallizer; the sealed cover is detachably connected to the sealed crucible and is located at the top of the sealed crucible; the casting pipe is detachably connected to the sealed cover and passes through the sealed cover; the double-layer funnel is detachably connected to the casting pipe and is located at the end of the casting pipe away from the sealed cover; and the crystallizer is detachably connected to the double-layer funnel and is located at the bottom of the double-layer funnel.

[0005] The double-layered funnel has small holes evenly spaced on its upper inner side, with a diameter of 1.5 mm and tilted downwards at 60°. The lower part of the double-layered funnel is disc-shaped with evenly spaced holes on its sidewalls, each with a diameter of 8 mm.

[0006] The casting device for vacuum melting of magnesium alloys further includes a fixing bolt and a lifting platform. The fixing bolt is threadedly connected to the sealing cover and passes through the sealing crucible. The lifting platform is fixedly connected to the crystallizer and is located at the bottom of the crystallizer.

[0007] The casting device for vacuum melting of magnesium alloy further includes a connecting pipe, a valve, and an argon cylinder. The connecting pipe is fixedly connected to the sealing cover and passes through the sealing cover. The valve is fixedly connected to the connecting pipe and is located at the end of the connecting pipe away from the sealing cover. The argon cylinder is fixedly connected to the valve and is located at the bottom of the valve.

[0008] The casting device for vacuum melting of magnesium alloy further includes a connecting pipe and a pressure gauge. The connecting pipe is fixedly connected to the sealing cover and passes through the sealing cover. The pressure gauge is fixedly connected to the connecting pipe and is located at the top of the connecting pipe.

[0009] This invention relates to a casting apparatus for vacuum melting of magnesium alloys. A sealed crucible is used to store molten magnesium, and a sealing cap protects the crucible from dust and impurities, preventing oxidation of the molten magnesium. A casting pipe extends to the middle of the sealed crucible, facilitating the intake of pure molten magnesium from the center. A double-layered funnel filters impurities from the molten magnesium, and a crystallizer shapes the molten magnesium. In use, opening the valve allows pressurized gas from the argon cylinder to enter the sealed crucible through the connecting pipe, increasing the pressure on the upper layer of the molten magnesium. This pressure then pumps the molten magnesium through the casting pipe into the double-layered funnel, where it is filtered before flowing into the crystallizer. This facilitates filtration and shaping of the molten magnesium, solving the problems of gravity casting's inability to precisely control liquid flow rate and the high cost and complex operation of pressure casting, which are unsuitable for large-scale production. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0011] Figure 1 This is a schematic diagram of the overall structure of the casting device for vacuum melting of magnesium alloys according to the first embodiment of this utility model.

[0012] In the diagram: 101-Sealed crucible, 102-Sealed cover, 103-Casting pipe, 104-Double-layer funnel, 105-Crystallizer, 106-Fixing bolt, 107-Lifting platform, 108-Connecting pipe, 109-Valve, 110-Argon cylinder, 111-Connecting pipe, 112-Pressure gauge. Detailed Implementation

[0013] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0014] The first embodiment of this application is as follows:

[0015] Please see Figure 1 ,in, Figure 1This is a schematic diagram of the overall structure of the casting device for vacuum melting of magnesium alloys according to the first embodiment of this utility model. This utility model provides a casting device for vacuum melting of magnesium alloys, including a sealed crucible 101, a sealed cover 102, a casting pipe 103, a double-layer funnel 104, a crystallizer 105, a fixing bolt 106, a lifting platform 107, a connecting pipe 108, a valve 109, an argon cylinder 110, a connecting pipe 111, and a pressure gauge 112. The aforementioned solution solves the problems of gravity casting being unable to accurately control the liquid flow rate, and pressure casting being costly, complex to operate, and unsuitable for large-scale production.

[0016] In this specific embodiment, the sealing cap 102 is detachably connected to the sealing crucible 101 and is located at the top of the sealing crucible 101; the casting pipe 103 is detachably connected to the sealing cap 102 and passes through the sealing cap 102; the double-layer funnel 104 is detachably connected to the casting pipe 103 and is located at the end of the casting pipe 103 away from the sealing cap 102; the crystallizer 105 is detachably connected to the double-layer funnel 104 and is located at the bottom of the double-layer funnel 104; the sealing crucible 101 is used to store molten magnesium; and the sealing cap 102 is used to protect the sealing crucible 101, preventing dust and impurities from entering the sealing crucible 101 and preventing the molten magnesium from overflowing. In the oxidation process, the casting pipe 103 extends to the middle of the sealed crucible 101, facilitating the intake of pure magnesium liquid from the middle of the sealed crucible 101 into the casting pipe 103. The double-layer funnel 104 is used to filter impurities in the magnesium liquid, and the crystallizer 105 is used to shape the magnesium liquid. In use, the valve 109 is opened, and the compressed gas in the argon cylinder 110 enters the sealed crucible 101 through the connecting pipe 108, increasing the pressure on the upper layer of the magnesium liquid in the sealed crucible 101. The magnesium liquid is then pumped through the casting pipe 103 into the double-layer funnel 104, where it is filtered before flowing into the crystallizer 105, facilitating the filtration and shaping of the magnesium liquid.

[0017] The double-layer funnel 104 has small holes evenly distributed on its upper inner side, with a diameter of 1.5 mm and tilted downwards at 60°. The lower part of the double-layer funnel 104 is disc-shaped with evenly distributed holes on its sidewalls, each with a diameter of 8 mm. The double-layer funnel 104 is used to filter magnesium liquid.

[0018] Secondly, the fixing bolt 106 is threadedly connected to the sealing cover 102 and passes through the sealing crucible 101. The lifting platform 107 is fixedly connected to the crystallizer 105 and is located at the bottom of the crystallizer 105. The fixing bolt 106 facilitates fixing the sealing cover 102 to the top of the sealing crucible 101, and the lifting platform 107 facilitates the control of the crystallizer 105 and the molding of magnesium liquid.

[0019] Furthermore, the connecting pipe 108 is fixedly connected to the sealing cap 102 and passes through the sealing cap 102. The valve 109 is fixedly connected to the connecting pipe 108 and is located at the end of the connecting pipe 108 away from the sealing cap 102. The argon cylinder 110 is fixedly connected to the valve 109 and is located at the bottom of the valve 109. The connecting pipe 108 connects the valve 109 to the inside of the sealed crucible 101. The valve 109 is used to control the argon cylinder 110, which is used to store argon gas. When it is necessary to draw the magnesium liquid in the sealed crucible 101 into the crystallizer 105 for crystallization, the valve 109 is opened, and the argon gas in the argon cylinder 110 flows into the sealed crucible 101 through the connecting pipe 108, thereby changing the pressure inside the sealed crucible 101 and facilitating the control of the magnesium liquid inside the sealed crucible 101.

[0020] Finally, the connecting pipe 111 is fixedly connected to the sealing cap 102 and passes through the sealing cap 102. The pressure gauge 112 is fixedly connected to the connecting pipe 111 and is located at the top of the connecting pipe 111. The connecting pipe 111 is used to connect the sealed crucible 101 to the pressure gauge 112, so that the pressure inside the sealed crucible 101 can be displayed on the surface of the pressure gauge 112, making it easy for staff to observe and control the valve 109 and the argon cylinder 110.

[0021] Using the magnesium alloy vacuum melting casting apparatus of this embodiment, the sealed crucible 101 is used to store molten magnesium, the sealing cover 102 is used to protect the sealed crucible 101, preventing dust and impurities from entering the sealed crucible 101 and preventing oxidation of the molten magnesium, the casting pipe 103 extends to the middle of the sealed crucible 101, facilitating the intake of pure molten magnesium from the middle of the sealed crucible 101 into the casting pipe 103, the double-layer funnel 104 is used to filter impurities in the molten magnesium, and the crystallizer 105 is used to shape the molten magnesium. In use, the valve 109 is opened, and the compressed gas in the argon cylinder 110 enters the sealed crucible 101 through the connecting pipe 108, which increases the pressure on the upper layer of the magnesium liquid in the sealed crucible 101. The magnesium liquid is then pumped into the double-layer funnel 104 through the casting pipe 103. After being filtered by the double-layer funnel 104, the magnesium liquid flows into the crystallizer 105, which facilitates the filtration and molding of the magnesium liquid. This solves the problems of gravity casting not being able to accurately control the liquid flow rate, and pressure casting being costly, complex to operate, and unsuitable for large-scale production.

[0022] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A casting apparatus for vacuum melting of magnesium alloys, characterized in that, Includes a sealed crucible, a sealed cap, a casting tube, a double-layer funnel, and a crystallizer; The sealing cap is detachably connected to the sealing crucible and is located at the top of the sealing crucible. The casting tube is detachably connected to the sealing cap and passes through the sealing cap. The double-layer funnel is detachably connected to the casting tube and is located at the end of the casting tube away from the sealing cap. The crystallizer is detachably connected to the double-layer funnel and is located at the bottom of the double-layer funnel.

2. The casting apparatus for vacuum melting of magnesium alloys as described in claim 1, characterized in that, The upper inner side of the double-layer funnel has evenly spaced small holes with a diameter of 1.5 mm, which are tilted downwards at 60°. The lower part of the double-layer funnel is disc-shaped with evenly spaced holes on the sidewalls, each with a diameter of 8 mm.

3. The casting apparatus for vacuum melting of magnesium alloys as described in claim 1, characterized in that, The casting apparatus for vacuum melting of magnesium alloys also includes a fixing bolt and a lifting platform. The fixing bolt is threadedly connected to the sealing cover and passes through the sealing crucible. The lifting platform is fixedly connected to the crystallizer and is located at the bottom of the crystallizer.

4. The casting apparatus for vacuum melting of magnesium alloys as described in claim 1, characterized in that, The casting apparatus for vacuum melting of magnesium alloys also includes a connecting pipe, a valve, and an argon cylinder. The connecting pipe is fixedly connected to the sealing cap and passes through the sealing cap. The valve is fixedly connected to the connecting pipe and is located at the end of the connecting pipe away from the sealing cap. The argon cylinder is fixedly connected to the valve and is located at the bottom of the valve.

5. The casting apparatus for vacuum melting of magnesium alloys as described in claim 1, characterized in that, The casting apparatus for vacuum melting of magnesium alloys also includes a connecting pipe and a pressure gauge. The connecting pipe is fixedly connected to the sealing cover and passes through the sealing cover. The pressure gauge is fixedly connected to the connecting pipe and is located at the top of the connecting pipe.

Images