CN112344733A

CN112344733A - Water-cooled copper crucible and vacuum suspension smelting device

Info

Publication number: CN112344733A
Application number: CN202011341941.3A
Authority: CN
Inventors: 朱春雷; 朱小平; 邵冲; 高仕山; 毕亮; 吴海龙
Original assignee: Hebei Gangyan Dekai Technology Co ltd; Gaona Aero Material Co Ltd
Current assignee: Hebei Gangyan Dekai Technology Co ltd; Gaona Aero Material Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-09

Abstract

The invention provides a water-cooled copper crucible and a vacuum suspension smelting device, which relate to the technical field of magnetic suspension smelting and comprise the following components: a crucible main body and a heat insulating member; the crucible body has a heat exchange wall, an outer wall of which is used to contact with external cooling water; the crucible main body is provided with a smelting chamber for containing metal melt, and a heat insulation member is arranged in the smelting chamber and is configured to be capable of blocking heat transmission between the smelting chamber and the heat exchange wall. Because set up thermal-insulated component on the heat exchange wall, utilize thermal-insulated component will smelt the cavity and separate with the heat exchange wall, the heat transmission between cavity and the heat exchange wall is smelted in the separation, effectively prevents to smelt the heat of metal melt in the cavity and is taken away by outside cooling water through the heat exchange wall, has alleviated the cooling circulation water who exists and copper crucible bottom contact among the prior art and has taken away metal melt heat in the copper crucible easily, causes calorific loss's technical problem.

Description

Water-cooled copper crucible and vacuum suspension smelting device

Technical Field

The invention relates to the technical field of magnetic suspension smelting, in particular to a water-cooled copper crucible and a vacuum suspension smelting device.

Background

The electromagnetic induction vacuum suspension smelting method for water-cooled copper crucible is a smelting method developed rapidly in recent years. The principle is that the high-frequency or medium-frequency alternating magnetic field forms electromagnetic force which is counteracted by gravity in metal or nonmetal smelting, so that the metal melt is suspended and separated from the side wall of the crucible, thereby obtaining the smelting method which heats at high temperature and prevents the crucible from being polluted, and the method is particularly suitable for metal or nonmetal materials with very high chemical activity or high purity of the metal melt, such as titanium alloy. The method is widely applied to a plurality of important fields such as metallurgy and high-end material preparation, and has good application prospect.

However, the smelting method has many advantages and disadvantages. Although the metal melt is not contacted with the side wall of the crucible under the action of electromagnetic force to reduce pollution and heat loss of the metal melt, the bottom of the metal melt is directly contacted with the bottom of the crucible due to the fact that the intensity of the magnetic field at the bottom of the crucible is weaker, and the bottom of the copper crucible is cooled through circulating water, so that a large amount of heat of the metal melt is taken away by cooling water through contact heat transfer, and a large amount of heat is lost.

Disclosure of Invention

The invention aims to provide a water-cooled copper crucible and a vacuum suspension smelting device, which solve the technical problem that metal melt heat in the copper crucible is easily taken away by cooling circulating water contacting with the bottom of the copper crucible in the prior art to cause heat loss.

In a first aspect, the present invention provides a water-cooled copper crucible comprising: a crucible main body and a heat insulating member;

the crucible body has a heat exchange wall, an outer wall of which is used to contact with external cooling water;

the crucible main body is provided with a smelting chamber for containing metal melt, the heat insulation component is arranged in the smelting chamber, and the heat insulation component is configured to be capable of blocking heat transmission between the smelting chamber and the heat exchange wall.

In an alternative embodiment of the method of the present invention,

the insulation member includes an insulation body;

the side of the heat insulation main body, which is far away from the heat exchange wall, is provided with a heat insulation surface, and the heat insulation surface is in contact with the metal melt.

In an alternative embodiment of the method of the present invention,

the insulation member further includes a mounting boss;

one end of the mounting protrusion is connected with the heat insulation main body, and the other end of the mounting protrusion is abutted to the heat exchange wall.

In an alternative embodiment of the method of the present invention,

the heat exchange wall is provided with a fixing groove;

the mounting protrusion extends into the fixing groove.

In an alternative embodiment of the method of the present invention,

the cross-sectional shape of the mounting protrusion is set to be annular, and the mounting protrusion can be set to be multiple.

In an alternative embodiment of the method of the present invention,

the thickness of thermal-insulated main part is 8 ~ 15mm, the length of installation arch is 8 ~ 30 mm.

In an alternative embodiment of the method of the present invention,

the heat insulation member is made of an inert refractory material, and the inert refractory material is any one of pure yttrium oxide, zirconium oxide added with 50-80% of yttrium oxide and zirconium oxide.

In an alternative embodiment of the method of the present invention,

the water-cooled copper crucible further comprises an insulating member;

the insulating member is disposed between the heat insulation body and the heat exchange wall, and the mounting protrusion is wrapped by the insulating member.

In an alternative embodiment of the method of the present invention,

the insulating component is made of heat-insulating cotton or mica sheets.

In a second aspect, the invention provides a vacuum suspension smelting device, which comprises the water-cooled copper crucible.

The invention provides a water-cooled copper crucible, comprising: a crucible main body and a heat insulating member; the crucible body has a heat exchange wall, an outer wall of which is used to contact with external cooling water; the crucible main body is provided with a smelting chamber for containing metal melt, and a heat insulation member is arranged in the smelting chamber and is configured to be capable of blocking heat transmission between the smelting chamber and the heat exchange wall. Because set up thermal-insulated component on the heat exchange wall, utilize thermal-insulated component will smelt the cavity and separate with the heat exchange wall, the heat transmission between cavity and the heat exchange wall is smelted in the separation, effectively prevents to smelt the heat of metal melt in the cavity and is taken away by outside cooling water through the heat exchange wall, has alleviated the cooling circulation water who exists and copper crucible bottom contact among the prior art and has taken away metal melt heat in the copper crucible easily, causes calorific loss's technical problem.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of a water-cooled copper crucible according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a heat insulating member in a water-cooled copper crucible according to an embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of a crucible main body in a water-cooled copper crucible according to an embodiment of the present invention.

Icon: 100-a crucible body; 110-a heat exchange wall; 111-a fixation groove; 120-a melting chamber; 200-an insulating member; 210-an insulating body; 211-a thermally insulating surface; 220-mounting a projection; 300-insulating member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

As shown in fig. 1, the water-cooled copper crucible provided in this embodiment includes: a crucible body 100 and a heat insulating member 200; the crucible main body 100 has a heat exchange wall 110, and an outer wall of the heat exchange wall 110 is used to be in contact with external cooling water; the crucible main body 100 is provided with a melting chamber 120 for containing molten metal, and a heat insulating member 200 is provided inside the melting chamber 120, the heat insulating member 200 being configured to be able to block heat transfer between the melting chamber 120 and the heat exchange wall 110.

Specifically, the bottom of the crucible main body 100 is a heat exchange wall 110, external cooling water contacts with the outer wall of the heat exchange wall 110 at the bottom of the crucible main body 100 for cooling, a melting chamber 120 is arranged in the crucible main body 100, the molten metal is located in the melting chamber 120, a heat insulation member 200 is arranged between the melting chamber 120 and the heat exchange wall 110 at the bottom of the crucible main body 100 to insulate the melting chamber 120 from the heat exchange wall 110 at the bottom of the crucible main body 100, the molten metal cannot directly contact with the heat exchange wall 110 at the bottom of the crucible main body 100, the heat insulation member 200 blocks heat of the molten metal from being conveyed to the heat exchange wall 110 at the bottom of the crucible main body 100, when the cooling water cools the heat exchange wall 110, since the heat of the metal melt cannot be transferred to the heat exchange wall 110, the heat of the metal melt is not lost due to the cooling of the heat exchange wall 110, thereby reducing the heat loss of the metal melt.

Because the heat loss of the metal melt is reduced, the working power of the crucible main body 100 can be reduced, for example, the power of the crucible main body 100 of 5kg of the traditional metal melt is about 150KW, the heating time is 8-10 minutes, the using power of the crucible main body 100 in the embodiment is 60-80 KW, and the heating time is 5-8 minutes.

The water-cooled copper crucible that this embodiment provided includes: a crucible body 100 and a heat insulating member 200; the crucible main body 100 has a heat exchange wall 110, and an outer wall of the heat exchange wall 110 is used to be in contact with external cooling water; the crucible main body 100 is provided with a melting chamber 120 for containing molten metal, and a heat insulating member 200 is provided inside the melting chamber 120, the heat insulating member 200 being configured to be able to block heat transfer between the melting chamber 120 and the heat exchange wall 110. Because the heat insulation member 200 is arranged on the heat exchange wall 110, the smelting chamber 120 is separated from the heat exchange wall 110 by the heat insulation member 200, so that heat transmission between the smelting chamber 120 and the heat exchange wall 110 is blocked, heat of the metal melt in the smelting chamber 120 is effectively prevented from being taken away by external cooling water through the heat exchange wall 110, and the technical problem that the heat of the metal melt in the copper crucible is easily taken away by cooling circulating water contacting with the bottom of the copper crucible in the prior art to cause heat loss is solved.

On the basis of the above embodiment, as shown in fig. 2, in an alternative embodiment, the water-cooled copper-through heat insulation member 200 provided by the present embodiment includes a heat insulation body 210; the side of the insulation body 210 away from the heat exchange wall 110 has an insulation surface 211, and the insulation surface 211 is in contact with the metal melt.

Specifically, one side of the heat insulation main body 210 close to the melting chamber 120 is provided with a heat insulation surface 211, the heat insulation surface 211 can contact with the metal melt in the melting chamber 120, the heat insulation surface 211 is a smooth surface or a curved surface, and is better in contact with the metal melt, so that the metal melt in the melting chamber 120 is effectively prevented from directly contacting the heat exchange wall 110 at the bottom of the crucible main body 100.

In an alternative embodiment, the insulation member 200 further includes mounting projections 220; one end of the mounting protrusion 220 is connected to the insulation body 210, and the other end of the mounting protrusion 220 abuts the heat exchange wall 110.

Specifically, a mounting protrusion 220 is arranged on one side of the heat insulation main body 210 far away from the melting chamber 120, the mounting protrusion 220 is connected with the heat insulation main body 210, the mounting protrusion 220 and the heat insulation main body 210 are of an integrally formed structure, the mounting protrusion 220 is abutted against the heat exchange wall 110, the heat insulation main body 210 covers the heat exchange wall 110 at the bottom of the crucible main body 100, and the metal melt in the melting chamber 120 is isolated from the heat exchange wall 110.

As shown in fig. 3, in an alternative embodiment, the heat exchange wall 110 is provided with fixing grooves 111; the mounting protrusion 220 protrudes into the fixing groove 111.

Specifically, the heat exchange wall 110 is provided with a fixing groove 111, the fixing groove 111 is an annular groove, and the mounting protrusion 220 extends into the fixing groove 111 to limit the movement of the mounting protrusion 220, so that the heat insulation main body 210 is fixed between the heat exchange wall 110 and the smelting chamber 120.

In an alternative embodiment, the cross-sectional shape of the mounting protrusion 220 is provided in a ring shape, and the mounting protrusion 220 may be provided in plurality.

Specifically, in order to fit the fixing groove 111, the mounting protrusion 220 is a ring-shaped protrusion, which may have two rings or three rings, and the fixing groove 111 is fitted with the ring-shaped protrusion, and has the same number of rings.

In the water-cooled copper crucible provided by the embodiment, the mounting protrusion 220 is arranged on the heat insulation main body 210, the mounting protrusion 220 is extended into the heat exchange wall 110, the heat insulation main body 210 is mounted between the melting chamber 120 and the heat exchange wall 110, and the heat of the molten metal in the melting chamber 120 is effectively blocked by the heat insulation main body 210 and is transferred to the heat exchange wall 110.

On the basis of the above embodiment, in an optional implementation manner, the thickness of the heat insulation body 210 in the water-cooled copper crucible provided by the embodiment is 8-15 mm, and the length of the installation protrusion 220 is 8-30 mm.

Specifically, the nominal thickness of the thermal insulation body 210 is 8-15 mm, the depth of the mounting protrusion 220 is 1-2 times of the thickness of the thermal insulation body 210, and the thickness of the mounting protrusion 220 is 0.5-1 times of the depth.

In an alternative embodiment, the heat insulation member 200 is an inert refractory material, and the inert refractory material is any one of pure yttria, zirconia added with 50-80% of yttria, and zirconia.

Specifically, the pure yttria has a purity of 99.99% or more and has a heat insulating property, and preferably, the material of the heat insulating member 200 is pure yttria, and the heat insulating member 200 of different materials can be selected according to actual conditions.

In an alternative embodiment, the water-cooled copper crucible further includes an insulating member 300; the insulation member 300 is disposed between the insulation body 210 and the heat exchange wall 110, and the insulation member 300 wraps the mounting protrusion 220.

Specifically, the insulating member 300 is arranged between the heat insulation body 210 and the heat exchange wall 110, the insulating member 300 is filled between the heat insulation body 210 and the heat exchange wall 110 and wraps the mounting protrusion 220 to support the heat insulation body 210, and the insulating member 300 is made of an insulating material, so that the insulating member 300 made of the insulating material is not influenced by an electromagnetic field and cannot be heated together with the molten metal in the process of heating the molten metal, and the insulating member 300 is effectively prevented from influencing the heating of the molten metal.

In an alternative embodiment, the insulating member 300 is provided as insulation cotton or mica sheets.

Specifically, the insulating member 300 is heat insulating cotton or a mica sheet, the mica sheet is composed of silicon-rich white mica, quartz, garnet, rutile and the like, has insulating and low-loss thermal resistance functions, is a good black body, and can be made of different materials according to actual conditions.

In the water-cooled copper crucible of the present embodiment, the insulating member 300 is disposed between the insulating body 210 and the heat exchange wall 110 at the bottom of the crucible body 100, thereby supporting the insulating body 210 and stabilizing the insulating body 210.

The vacuum suspension smelting device provided by the embodiment comprises a water-cooled copper crucible.

Since the technical effect of the vacuum suspension smelting device provided by the embodiment is the same as that of the water-cooled copper crucible, the details are not repeated herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water-cooled copper crucible, comprising: a crucible main body (100) and a heat insulating member (200);

the crucible body (100) has a heat exchange wall (110), an outer wall of the heat exchange wall (110) being used to be in contact with external cooling water;

the crucible body (100) is provided with a melting chamber (120) for containing molten metal, the heat insulation member (200) is arranged in the melting chamber (120), and the heat insulation member (200) is configured to block heat transmission between the melting chamber (120) and the heat exchange wall (110).

2. The water-cooled copper crucible as recited in claim 1,

the insulation member (200) comprises an insulation body (210);

the side of the heat insulation main body (210) far away from the heat exchange wall (110) is provided with a heat insulation surface (211), and the heat insulation surface (211) is contacted with the metal melt.

3. The water-cooled copper crucible as recited in claim 2,

the insulation member (200) further comprises a mounting projection (220);

one end of the mounting protrusion (220) is connected to the heat insulation body (210), and the other end of the mounting protrusion (220) abuts against the heat exchange wall (110).

4. The water-cooled copper crucible as recited in claim 3,

the heat exchange wall (110) is provided with a fixing groove (111);

the mounting protrusion (220) protrudes into the fixing groove (111).

5. The water-cooled copper crucible as recited in claim 4,

the cross-sectional shape of the mounting protrusion (220) is provided in a ring shape, and the mounting protrusion (220) may be provided in plurality.

6. The water-cooled copper crucible as recited in claim 3,

the thickness of thermal-insulated main part (210) is 8 ~ 15mm, the length of installation arch (220) is 8 ~ 30 mm.

7. The water-cooled copper crucible as recited in claim 1,

the heat insulation member (200) is made of an inert refractory material, and the inert refractory material is any one of pure yttrium oxide, zirconium oxide added with 50-80% of yttrium oxide and zirconium oxide.

8. The water-cooled copper crucible as recited in claim 3,

the water-cooled copper crucible further comprises an insulating member (300);

the insulation member (300) is disposed between the insulation body (210) and the heat exchange wall (110), and the insulation member (300) wraps the mounting protrusion (220).

9. The water-cooled copper crucible as recited in claim 8,

the insulating member (300) is arranged as heat-insulating cotton or a mica sheet.

10. A vacuum suspension smelting apparatus comprising the water-cooled copper crucible as claimed in any one of claims 1 to 9.