CN219160948U

CN219160948U - Temperature-controllable cooling casting container in metal arc melting furnace

Info

Publication number: CN219160948U
Application number: CN202222840887.8U
Authority: CN
Inventors: 张涛; 刘子扬; 邓皓玮
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-06-09
Anticipated expiration: 2032-10-26

Abstract

The utility model relates to the field of metal smelting, and discloses a temperature-controllable cooling casting container in a metal arc melting furnace, which comprises a vacuum arc melting furnace and a temperature-controllable cooling casting container which are connected together, wherein the temperature-controllable cooling casting container is arranged below the vacuum arc melting furnace, and the temperature-controllable cooling casting container in the metal arc melting furnace has a very high cooling speed (up to 10 ⁶ K/s), alloy block obtained by low-temperature casting, microstructure rulerThe size of the alloy can reach the micron level, and compared with a casting sample prepared by a traditional arc melting furnace, the alloy has finer grain size by setting a lower temperature for a low-temperature constant-temperature tank.

Description

Temperature-controllable cooling casting container in metal arc melting furnace

Technical Field

The utility model relates to the field of metal smelting, in particular to a temperature-controllable cooling casting container in a metal arc melting furnace.

Background

Improving the mechanical properties of materials is one of the areas of interest for many researchers in recent years. For metallic materials, it is generally difficult to combine the plasticity and strength of the alloy. As is well known, the microstructure of a material is the root cause of its mechanical properties, and various methods have been proposed to modify the microstructure of a material to improve the mechanical properties of an alloy, such as heat treatment, addition of alloying elements, thermo-mechanical treatment, control of solidification processes, and the like. In various ways of controlling the solidification process, supercooling, i.e. unbalanced solidification, is an effective way to obtain a grain refined structure, metastable phase, and even a special structure that is advantageous for performance. Casting is a relatively common supercooling process of metal materials, and has obvious advantages compared with other supercooling processes, such as being capable of producing parts with complex shapes; the adaptability is wide, and the metal materials commonly used in industry can be cast; the manufacturing process is simple, and the cutting amount of the casting is reduced; can be mass-produced. The temperature of the supercooling copper mold cannot be regulated and controlled in the casting process, so that the microstructure of the alloy cannot be customized through casting, the performance of the casting is single, and the supercooling copper mold cannot be flexibly regulated and controlled according to the needs of people, and therefore, the temperature-controllable cooling casting container in the metal arc melting furnace is provided.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a cooling casting container with controllable temperature in a metal arc melting furnace, and aims to solve the problem that the traditional arc melting furnace cannot manually regulate and control the temperature of a casting copper mold.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: a temperature-controllable cooling casting container in a metal arc melting furnace comprises a vacuum arc melting furnace and a temperature-controllable cooling casting container which are connected together, wherein the temperature-controllable cooling casting container is arranged below the vacuum arc melting furnace.

Preferably, the vacuum arc melting furnace comprises a crucible and a furnace body, wherein openings are formed in the top and the bottom of the furnace body, and the crucible is tightly connected with the inner wall of the bottom of the furnace body.

Preferably, the crucible is a copper crucible.

Preferably, the temperature-controllable cooling casting container comprises a water-cooling copper mold, a water inlet pipeline, a water outlet pipeline, a pipeline anti-freezing pipe sleeve and a low-temperature constant-temperature tank which uses an ethanol solution with the purity of ninety-nine percent as cooling liquid, wherein the water-cooling copper mold is arranged right below a crucible, the pipeline anti-freezing pipe sleeve wraps the water inlet pipeline and the outer layer of the water outlet pipeline, and the water-cooling copper mold is connected with the low-temperature constant-temperature tank through the water inlet pipeline and the water outlet pipeline.

(III) beneficial effects

Compared with the prior art, the utility model provides the cooling casting container with controllable temperature in the metal arc melting furnace, which has the following beneficial effects:

1. the temperature-controllable cooling casting container in the metal arc melting furnace has very high cooling speed (up to 10 ⁶ K/s), the microstructure size of the alloy block obtained by low-temperature casting can reach the micron level, and compared with a casting sample prepared by a traditional arc melting furnace, the grain size of the alloy is finer by setting a lower temperature for a low-temperature constant-temperature tank.

2. The temperature-controllable cooling casting container in the metal arc melting furnace can regulate and control the microstructure of the alloy, such as the form and size of precipitated phases, the crystal grain form and the possible occurrence of metastable phases by controlling the temperature of a water-cooled copper mold.

3. The temperature-controllable cooling casting container in the metal arc melting furnace can adjust the microstructure of the material by controlling the temperature of the water-cooling copper mold so as to adjust and control various properties of the material, such as mechanical properties, corrosion resistance and the like. The device provides a favorable guarantee for developing materials with excellent performances.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model.

In the figure: 1. a furnace body; 2. a crucible; 3. water-cooling copper mold; 4. a water inlet pipe; 5. a water outlet pipe; 6. the pipeline is anti-freezing to be covered; 7. a low temperature constant temperature tank.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, a temperature-controllable cooling casting container in a metal arc melting furnace comprises a vacuum arc melting furnace and a temperature-controllable cooling casting container which are connected together, wherein the temperature-controllable cooling casting container is arranged below the vacuum arc melting furnace.

Further, the vacuum arc melting furnace comprises a crucible 2 and a furnace body 1, openings are formed in the top and the bottom of the furnace body 1, and the crucible 2 is tightly connected with the inner wall of the bottom of the furnace body 1.

Further, the crucible 2 is a copper crucible.

Further, the temperature-controllable cooling casting container comprises a water-cooling copper mold 3, a water inlet pipeline 4, a water outlet pipeline 5, a pipeline anti-freezing pipe sleeve 6 and a low-temperature constant-temperature groove 7 taking an ethanol solution with the purity of ninety-nine percent as cooling liquid, wherein the water-cooling copper mold 3 is arranged right below the crucible 2, the pipeline anti-freezing pipe sleeve 6 wraps the water inlet pipeline 4 and the outer layer of the water outlet pipeline 5, and the water-cooling copper mold 3 is connected with the low-temperature constant-temperature groove 7 through the water inlet pipeline 4 and the water outlet pipeline 5.

Further, the cryostat tank 7 can be assembled with different models according to the process requirements so as to meet the different process requirements.

The process for preparing alloy materials using the metal arc melting furnace with the temperature-controllable cooling device of the embodiment is as follows:

s1: placing alloy materials into a crucible 2 in a furnace body 1 of a smelting furnace, and repeatedly heating and melting the alloy for 5 times by an arc smelting method;

s2: in the process of cooling the re-alloy, an ethanol solution with the concentration of 99% is poured into the low-temperature constant-temperature tank 7, then the required temperature is set, and the low-temperature constant-temperature tank 7 is started. When the temperature is reduced to the preset temperature, the temperature is kept for more than 30 minutes;

s3: the alloy ingot is transferred to the casting crucible 2 by a mechanical arm, and is rapidly heated to a molten state so as to flow into the water-cooled copper mold 3.

S4: and (3) enabling the metal fluid to contact the inner surface of the water-cooling copper mold 3 to be rapidly cooled and solidified to obtain a blocky supercooled alloy, and then disassembling and assembling the water-cooling copper mold 3 to obtain a sample.

The supercooled alloy block prepared in this example has a microstructure size up to the micrometer level, and the average grain size is smaller as the preset temperature is lower.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A temperature-controllable cooling casting container in a metal arc melting furnace, which is characterized by comprising a vacuum arc melting furnace and a temperature-controllable cooling casting container which are connected together, wherein the temperature-controllable cooling casting container is arranged below the vacuum arc melting furnace.

2. A cooled casting vessel for controlled temperature in a metal arc furnace according to claim 1 wherein: the vacuum arc melting furnace comprises a crucible (2) and a furnace body (1), openings are formed in the top and the bottom of the furnace body (1), and the crucible (2) is tightly connected with the inner wall of the bottom of the furnace body (1).

3. A cooled casting vessel according to claim 2, wherein the temperature is controllable in a metal arc furnace, characterized in that: the crucible (2) is a copper crucible.

4. A cooled casting vessel for controlled temperature in a metal arc furnace according to claim 1 wherein: the cooling casting container with the controllable temperature comprises a water-cooling copper mold (3), a water inlet pipeline (4), a water outlet pipeline (5), a pipeline anti-freezing pipe sleeve (6) and a low-temperature constant-temperature groove (7) which uses an ethanol solution with the purity of ninety-nine percent as cooling liquid, wherein the water-cooling copper mold (3) is arranged right below a crucible (2), the pipeline anti-freezing pipe sleeve (6) is wrapped on the outer layers of the water inlet pipeline (4) and the water outlet pipeline (5), and the water-cooling copper mold (3) is connected with the low-temperature constant-temperature groove (7) through the water inlet pipeline (4) and the water outlet pipeline (5).