Heat-insulating amorphous suction casting mold capable of controlling different cooling rate gradients

Abstract

The utility model discloses an amorphous suction casting mold capable of controlling different cooling rate gradients and insulating heat, and relates to the technical field of suction casting processes. The heat conduction efficiency of a traditional copper mold smelting pool is poor, the heat insulation effect is poor, a copper mold suction casting body is overheated, the sample quality is unstable, and the cooling rate cannot be regulated and controlled. The utility model provides a heat-insulating amorphous suction casting mould capable of controlling different cooling rate gradients, which comprises a smelting pool, a suction casting part, a lantern ring I and a lantern ring II, the smelting pool and the suction casting part are divided into an upper part and a lower part, and the smelting pool, the suction casting part and each suction casting mould are connected through a detachable structure. Wherein the smelting tank is made of a material with high thermal stability, low thermal conductivity, good electrical conductivity and good stability; the suction casting molds are made of materials with different thermal conductivities. The amorphous suction casting mold capable of controlling different cooling rate gradients and insulating heat can be used for manufacturing different amorphous alloys.

Description

Technical Field

[0001] The utility model relates to the technical field of suction casting technology, in particular to an amorphous suction casting mold capable of controlling different cooling rate gradients and providing heat insulation. Background Art

[0002] Amorphous alloys, also known as metallic glasses, are a new class of materials with short-range order and long-range disorder. These materials combine the advantages of metals and glasses, exhibiting excellent mechanical, physical, and chemical properties. Cooling rate is a key factor in the production of amorphous materials, significantly impacting their glass-forming ability. Generally, rapid cooling inhibits crystal growth, thereby promoting the formation of the amorphous state. Rods of different compositions require different cooling rates. Alloys with strong glass-forming ability, such as the ZrCuAl ternary amorphous alloy, can form an amorphous structure at lower cooling rates. The evolution of nanoscale structural heterogeneity and the shear band nucleation dynamics of iron-based metallic glasses at different cooling rates affect their mechanical deformation behavior. Overall, cooling rate is a critical parameter in the preparation of amorphous materials, directly affecting the formation and stability of the amorphous structure. In practical applications, to obtain ideal amorphous materials, scientists and engineers need to precisely control the cooling rate to optimize the amorphous material preparation process.

[0003] Arc melting and suction casting is a commonly used method in the laboratory. It uses an arc to melt the alloy mother ingot at high temperature, and then quickly cools it by suction into a suction casting mold under the protection of inert gas to form an amorphous structure.

[0004] The existing technology has the following problems: the traditional copper mold smelting pool has poor insulation effect, which causes the copper mold suction casting body to overheat, resulting in unstable sample quality, and the traditional copper suction casting mold cannot control the cooling rate. Utility Model Content

[0005] In response to the above-mentioned problems, the present invention aims to provide an amorphous suction casting mold with controllable cooling rate gradients and heat insulation, which can improve the problems of unstable sample quality and uncontrollable cooling rate.

[0006] The main idea of the technical solution adopted by the utility model is to change the smelting pool material and select materials with high thermal stability, low thermal conductivity, good electrical conductivity and good stability; design suction casting molds made of materials with different thermal conductivity and connect them through a detachable structure.

[0007] In order to achieve the above purpose, the technical solutions adopted by this utility model are as follows:

[0008] An amorphous suction casting mold with controllable cooling rate gradients and heat insulation includes a smelting pool and a suction casting part. The smelting pool is above the suction casting part. The invention is characterized in that the suction casting part includes a detachable middle suction casting mold assembly and a bottom suction casting mold from top to bottom.

[0009] Through the above technical solution, further: the smelting pool is a relatively low cylinder with a curved groove on the top and a cylindrical groove on the bottom, and a rod forming hole is opened through the center of the circle.

[0010] Through the above technical solution, further: the smelting pool adopts graphene material.

[0011] Through the above technical solution, further: each suction casting mold of the suction casting part adopts materials with different thermal conductivity.

[0012] According to the above technical solution, further: the intermediate suction casting mold assembly is composed of at least one suction casting mold, wherein each suction casting mold is a cylinder with a convex upper part and a concave lower part.

[0013] Through the above technical solution, further: the bottom suction casting mold is a cylinder with upper and lower protrusions.

[0014] Through the above technical solution, further: the bottom suction casting mold is divided into two identical parts from the center of the circle, and a rod forming hole is opened through it.

[0015] The beneficial effects of the utility model are:

[0016] 1. The present invention uses a material with high thermal stability, low thermal conductivity, good electrical conductivity, and good stability to make the smelting pool. The excellent high thermal stability accelerates the smelting speed of the alloy mother ingot; the low thermal conductivity can effectively isolate the temperature of the smelting pool from the suction casting part below, and more effectively perform amorphous forming; the good electrical conductivity can reduce the resistance during the smelting process, thereby reducing energy loss and achieving a more energy-efficient smelting process; the good material stability will not react with part of the molten metal or contaminate the metal like copper, which helps to improve the purity of the molten metal;

[0017] 2. This invention meets the requirements of different cooling rates by using materials with different thermal conductivity to make suction casting molds and combining them to achieve controllable cooling rates of the molten metal in different areas, thereby obtaining amorphous materials with specific properties, improving production efficiency, saving energy, and having important environmental significance;

[0018] 3. The utility model adopts a detachable structure to connect the smelting pool and the suction casting part, as well as each suction casting mold, to ensure that the operator can easily install and disassemble and maintain the mold, thereby improving the simplicity of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of an amorphous suction casting mold capable of controlling different cooling rate gradients and providing heat insulation in the present invention;

[0021] Figure 2 This is a schematic diagram of the first and second structures of an amorphous suction casting mold without collars that can control different cooling rate gradients and can provide thermal insulation.

[0022] Figure 3 This is a schematic diagram of the decomposed structure of an amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation in the present invention;

[0023] Figure 4 This is a schematic diagram of the smelting pool structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of a suction casting mold of the intermediate suction casting mold assembly of this utility model;

[0025] Figure 6 This is a schematic diagram of the bottom suction casting mold structure of the utility model;

[0026] in:

[0027] Smelting pool 1;

[0028] Suction casting part 2; middle suction casting mold assembly 201; bottom suction casting mold 202;

[0029] Rod forming hole 3;

[0030] Ring 1-4;

[0031] Ring II 5. DETAILED DESCRIPTION

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0034] The inventors found in practice that in arc melting and suction casting, the traditional copper mold melting pool has poor insulation effect, which causes the copper mold suction casting body to overheat and causes unstable sample quality; the cooling rate has a significant impact on the amorphous forming ability, and the existing technology cannot accurately control the cooling rate.

[0035] Based on the above findings, the present application proposes an amorphous suction casting mold that can control different cooling rate gradients and can be insulated. The smelting pool is made of a material with high thermal stability, low thermal conductivity, good electrical conductivity, and good stability. This can accelerate the smelting speed of the alloy mother ingot, isolate the temperature of the smelting pool from the suction casting part below, reduce the resistance during the smelting process, and reduce energy loss. It will not react with part of the molten metal or contaminate the metal. Each mold in the suction casting part is made of materials with different thermal conductivity and connected by a detachable structure, which can control the cooling rate and facilitate the assembly and maintenance of the mold. Example

[0036] See Figures 1 to 6 The present application discloses an amorphous suction casting mold capable of controlling different cooling rate gradients and being heat-insulated, comprising a smelting pool 1, a suction casting part 2, a collar 1 4, and a collar 2 5. The smelting pool 1 and the suction casting part 2 are divided into an upper and a lower part. The smelting pool 1 and the suction casting part (2) and each suction casting mold are connected by a detachable structure, which is convenient for replacing or adjusting parts of different materials according to experimental needs, ensuring that operators can easily load and unload and maintain the mold, and improving the ease of operation; the collar 1 4 is concentrically connected to the smelting pool 1, and the collar 2 is concentrically connected to the bottom suction casting mold 202. The entire mold is cylindrical after assembly.

[0037] The smelting pool 1 is a relatively low cylinder with a curved groove on the top, a cylindrical groove with an internal thread on the bottom, an external thread on the side wall, and a rod forming hole extending through the center. The smelting pool 1 is made of a material with high thermal stability, low thermal conductivity, good electrical conductivity, and good stability, such as graphene. The excellent high thermal stability accelerates the smelting speed of the alloy mother ingot and improves experimental efficiency. The low thermal conductivity can effectively isolate the temperature of the smelting pool from the suction casting part 2, ensuring effective formation of amorphous materials. The good electrical conductivity can reduce resistance during the smelting process, thereby reducing energy loss and achieving energy saving in the smelting process. The good material stability will not react with part of the molten metal or contaminate the metal, which helps to improve the purity of the molten metal.

[0038] The suction casting part 2 is divided into a middle suction casting mold assembly 201 and a bottom suction casting mold 202. Each mold is made of materials with different thermal conductivity, such as iron, copper, steel, etc., to meet the requirements of different cooling rates and achieve controllable cooling rates of the molten metal in different areas, thereby obtaining amorphous materials with specific properties, improving production efficiency, saving energy, and having important environmental significance.

[0039] The intermediate suction casting mold assembly 201 is composed of upper convex and lower concave cylinders with the same structural dimensions. The upper convex cylinder is provided with an external thread, and the lower concave cylinder is provided with an internal thread. A rod forming hole is opened through the center of the circle.

[0040] The bottom suction casting mold 202 is penetrated by a rod forming hole and is divided into two identical parts from the center of the circle, which is easy to remove the metal rod; the bottom suction casting mold 202 is a cylindrical body with upper and lower protrusions, and the upper protruding cylinder is provided with an external thread that cooperates with the inner thread of the concave cylinder below the middle suction casting mold assembly 201; the lower protruding cylinder is provided with cylindrical grooves of different sizes.

[0041] Specifically, the large cylindrical groove is adjacent to the small cylindrical groove, and the combined height of the large and small cylindrical grooves does not exceed the height of the cylindrical protrusion below. The diameter of the small cylindrical groove is larger than the diameter of the bar forming hole, and the groove is provided with an internal thread, which is used in conjunction with the bolt to prevent molten metal from flowing out of the mold and into the mechanical pump. The large cylindrical groove prevents the highly fluid molten metal from accidentally leaking through the bolt and entering the mechanical pump. If the molten metal leaks from the bolt, it will solidify when it encounters cold in the large cylindrical groove, preventing the molten metal from flowing into the mechanical pump.

[0042] The sleeve ring 1 4 and the sleeve ring 2 5 are circular rings with the same inner and outer diameters. The inner diameter matches the diameter of the cylinder raised below the smelting pool 1 and the bottom suction casting mold 202, and the outer diameter is the same as the diameter of the cylinder of the suction casting part 2. Anti-slip grooves are added to the outer surface to increase the friction of the hand-tightening sleeve ring, which is convenient for disassembly; threads are added to the inner surface to be connected with the external threads on the side wall of the smelting pool 1 and the external threads on the side wall of the cylinder raised below the bottom suction casting mold 202, which is convenient for disassembly; the height of the sleeve ring 1 4 is slightly smaller than the height of the smelting pool 1, which is convenient for disassembly; the height of the sleeve ring 2 5 is greater than the height of the sleeve ring 1 4. After the copper mold is successfully suction-casted, the mold is difficult to disassemble. The large height of the sleeve ring 2 5 will increase the contact area between the sleeve ring 2 5 and the hand, making it easier to unscrew the sleeve ring 2 5, so that the operator can easily load and unload the mold, while reducing the mold cost.

[0043] A usage process of this embodiment is:

[0044] Based on experimental needs, suction casting molds made of materials with different thermal conductivity are selected. The middle suction casting mold 201 is assembled sequentially. The two parts of the bottom suction casting mold 202 are first assembled and then assembled below the middle suction casting mold 201 to form the suction casting part 2. The top of the suction casting part 2 is inserted into the bottom of the smelting pool 1. Finally, the collar 1 4 and collar 2 5 are concentrically connected to the smelting pool 1 and the bottom suction casting mold 202, respectively, to form the suction casting mold assembly. The assembled suction casting mold assembly is placed vertically into the equipment. The molten metal liquid is sucked into the mold bar forming hole through pressure differential and mechanical pumps. After cooling with the furnace, the suction casting mold assembly is removed from the equipment and disassembled. The operator holds collar 1 4 with one hand and collar 2 5 with the other hand, rotates them, unscrews collar 2 5, and uses the same method to unscrew the bottom suction casting mold 202 and the middle suction casting mold 201 in sequence. Finally, collar 1 4 is separated from the smelting pool 1.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An amorphous suction casting mold capable of controlling different cooling rate gradients and being heat-insulated, comprising a smelting pool (1) and a suction casting portion (2), wherein the smelting pool (1) is above the suction casting portion (2), and is characterized in that: The suction casting part (2) comprises, from top to bottom, a detachable middle suction casting mold assembly (201) and a bottom suction casting mold (202).

2. The amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation according to claim 1, characterized in that: The smelting pool (1) is a relatively low cylinder with a curved groove on the top and a cylindrical groove on the bottom, and a rod forming hole is opened through the center of the circle.

3. The amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation according to claim 2, characterized in that: The smelting pool (1) is made of graphene material.

4. The amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation according to claim 1, characterized in that: Each suction casting mold of the suction casting part (2) is made of materials with different thermal conductivity.

5. The amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation according to claim 1, characterized in that: The intermediate suction casting mold assembly (201) consists of at least one suction casting mold, wherein each suction casting mold is a cylinder with a convex upper portion and a concave lower portion.

6. The amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation according to claim 1, characterized in that: The bottom suction casting mold (202) is a cylindrical body with upper and lower protrusions.

7. The amorphous suction casting mold capable of controlling different cooling rate gradients and providing thermal insulation according to claim 6, characterized in that: The bottom suction casting mold (202) is divided into two identical parts from the center of the circle, and is penetrated by a rod forming hole.

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