An insulating cup for artificial diamond

Abstract

The invention discloses an insulating cup for artificial diamond, comprising an insulating cup body, an insulating cup cavity is arranged in the middle of the insulating cup body, an outer cup wall is arranged on the outer side of the insulating cup body, the insulating cup body is made of salt-doped oxide material, a graphite core column is placed on the inner side of the insulating cup cavity, and a heating pipe assembly is fixedly installed on the outer side of the outer cup wall. The insulating cup for artificial diamond of the invention removes dolomite insulating material and iron cup material in a traditional insulating cup, selects a granular sodium chloride mixed with ferric oxide or ferric oxide and is pressed, and replaces the traditional insulating cup with a salt-doped cup to realize the two-in-one of the insulating cup and the iron cup. The production process is more concise, and can be mass-produced. The material is cheap and easy to obtain in life, which can reduce the production cost, can ensure that the graphite core column is not contaminated by impurities, and makes the outer color of the diamond after synthesis normal, which is conducive to improving the grade of artificial diamond.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure cavity accessories in artificial diamond equipment, in particular to an insulating cup for artificial diamond. Background Art

[0002] At present, the insulating cup parts for producing artificial diamonds are mainly made of dolomite of different particle sizes mixed in a certain proportion, mixed with water glass, stirred, and then pressed into shape. The internal parts assembly of the medium and high pressure cavity includes a graphite core column, an iron cup, an insulating cup, a heating tube and a graphite sheet. During the synthetic process of artificial diamond, a certain intensity of voltage and current is applied to the graphite sheet, and then transmitted to the heating tube, which can produce the high temperature conditions required by the synthetic process of artificial diamond. The main function of the insulating cup is to isolate the heating tube from the iron cup, so as to improve the stability of the synthetic diamond process and improve the grade of the finished diamond. The function of the iron cup in synthetic diamond is to isolate impurities. If the iron cup is removed, black diamonds will appear on the end of the graphite core column and the circumferential surface of the graphite core column, and finally mixed with the diamond of normal color, thus affecting the grade of the finished diamond product. In summary, iron is a beneficial element in the synthesis of artificial diamonds and is indispensable. In actual production, the catalyst mixed with the graphite core column contains iron powder, and the heating tube is made of iron, chromium, aluminum and a small amount of rare earth element alloy steel strip. Pure sodium chloride mixed into the graphite core column has no effect on the color of the synthesized diamond.

[0003] After searching, it was found that the common insulating cups for artificial diamonds on the market are all made of a mixture of dolomite and metal materials. For example, the Chinese utility model with application number 201520568713.8 is called the patent for an iron cup in the field of artificial diamond synthesis. It is formed by spraying or plating a magnesium oxide layer on a pure white dolomite powder layer to form an insulating cup; the Chinese utility model with application number 201320849860.3 is called the patent for a composite insulating cup for diamond synthesis. It is made by bonding an air-intake metal sheet into a dolomite insulating material to form an insulating cup. Although these commonly used types of insulating cups can meet the production needs of artificial diamonds, they have the following shortcomings:

[0004] 1. The insulating cup is made of multi-layer composite material, the production process is complicated, the production efficiency is low, and the cost is high;

[0005] 2. Synthetic finished diamonds are easily contaminated, affecting the grade of artificial diamonds. Summary of the invention

[0006] The purpose of the present invention is to provide an insulating cup for artificial diamond to solve the problems of complicated production process, low production efficiency, high cost and easy contamination of synthetic finished diamonds in the existing insulating cup for artificial diamond mentioned in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an insulating cup for artificial diamond, comprising an insulating cup body, an insulating cup cavity is provided in the middle of the insulating cup body, an outer cup wall is provided on the outer side of the insulating cup body, and the insulating cup body is made of a salt-doped oxide material; a granular sodium chloride mixed with ferric oxide or ferrosirroxide is selected to be pressed, and a salt-doped cup is used to replace the traditional insulating cup, so as to realize the two-in-one of the insulating cup and the iron cup, and the production process is more concise, and can be mass-produced, and the material is cheap and easily available in life, which can reduce the production cost.

[0008] Preferably, a graphite core column is placed inside the insulating cup cavity, a heating tube assembly is fixedly mounted on the outside of the outer cup wall, and a graphite sheet is sleeved on the outside of the heating tube assembly, so that positioning and assembly are fast and efficient.

[0009] Preferably, the ratio of sodium chloride particles to ferroferric oxide powder in the salt-doped oxide material is 97:3; a salt-doped cup is used to replace the traditional insulating cup, realizing the two-in-one of the insulating cup and the iron cup, and the production process is more concise and can be mass-produced.

[0010] Preferably, the ratio of sodium chloride particles to ferric oxide powder in the salt-doped oxide material is 98:2; a salt-doped cup is used to replace the traditional insulating cup, realizing the two-in-one of the insulating cup and the iron cup, and the production process is more concise and can be mass-produced.

[0011] Preferably, the ratio of sodium chloride particles, ferrosoferric oxide powder and ferric oxide powder in the salt-doped oxide material is 96:2:2; a salt-doped cup is used to replace the traditional insulating cup, realizing the two-in-one of the insulating cup and the iron cup, and the production process is more concise and can be mass-produced.

[0012] Preferably, the thickness of the insulating cup body is 0.1-0.2 mm, the whole is light and the production cost is low.

[0013] Preferably, the insulating cup body is integrally pressed and formed, and the insulating cup is a disposable item with low production cost and high production efficiency.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The artificial diamond insulating cup removes the dolomite insulating material and iron cup material in the traditional insulating cup, and selects a granular sodium chloride mixed with ferric oxide or ferric oxide to press it. A salt-doped cup replaces the traditional insulating cup, realizing the two-in-one of the insulating cup and the iron cup. The production process is simpler and can be mass-produced. The material is cheap and easy to obtain in life, which can reduce the production cost.

[0016] 2. During the diamond synthesis process, the maximum temperature of the heating tube is less than 1500 degrees. At this temperature, chromium does not reach the melting temperature, and aluminum and a small amount of rare earth are in a molten state and penetrate into the molten salt cup, and then generate aluminum oxide and rare earth oxides with the iron oxide or iron oxide therein, which ensures that the graphite core column is not contaminated by impurities, so that the color of the outer periphery of the synthetic diamond is normal, which is beneficial to improve the grade of artificial diamonds. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the insulating cup of the present invention;

[0018] Figure 2 This is a diagram showing the proportions of an embodiment of an insulating cup of the present invention;

[0019] Figure 3 It is a schematic cross-sectional structural diagram of the insulating cup of the present invention;

[0020] Figure 4 This is a diagram showing the assembly and use of the insulating cup of the present invention.

[0021] In the figure: 1. Insulating cup body; 2. Insulating cup cavity; 3. Outer cup wall; 4. Graphite core column; 5. Heating tube assembly; 6. Graphite sheet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] Embodiment 1:

[0024] See also Figure 1-4 The present invention provides an insulating cup for artificial diamond, comprising an insulating cup body 1, an insulating cup cavity 2 is arranged in the middle of the insulating cup body 1, an outer cup wall 3 is arranged on the outer side of the insulating cup body 1, the insulating cup body 1 is made of salt-doped oxide material, a graphite core column 4 is placed on the inner side of the insulating cup cavity 2, a heating pipe assembly 5 is fixedly installed on the outer side of the outer cup wall 3, a graphite sheet 6 is sleeved on the outer side of the heating pipe assembly 5, the thickness of the insulating cup body 1 is 0.1-0.2 mm, and the insulating cup body 1 is integrally pressed; the heating pipe assembly 5 is rolled from an alloy steel strip of iron, chromium aluminum and a small amount of rare earth elements.

[0025] The ratio of sodium chloride particles to ferroferric oxide powder in the salt-doped oxide material is 97:3.

[0026] When the embodiment of the present application is in use: the ratio of sodium chloride particles to ferroferric oxide powder in the salt-doped oxide material is 97:3, and an insulating cup body is formed by pressing, and a doped salt cup replaces the traditional insulating cup to achieve a two-in-one insulating cup and an iron cup. When in use, the insulating cup body 1 is placed opposite the heating tube assembly 5, and finally a graphite core column 4 is placed in the insulating cup cavity 2. During the diamond synthesis process, the maximum temperature of the heating tube assembly 5 is less than 1500 degrees Celsius. At this temperature, chromium does not reach the melting temperature, and aluminum and a small amount of rare earth penetrate into the molten salt cup in a molten state, and then generate aluminum oxide and rare earth oxides with the iron oxide or ferroferric oxide therein, thereby ensuring that the graphite core column 4 is not contaminated by impurities. After synthesis, the color of the diamond periphery is normal, the production process is simpler, and it can be mass-produced, and the mass ratio of oxides in the salt cup is less than 40%.

[0027] Embodiment 2:

[0028] See also Figure 1-4 The present invention provides an insulating cup for artificial diamond, comprising an insulating cup body 1, an insulating cup cavity 2 is arranged in the middle of the insulating cup body 1, an outer cup wall 3 is arranged on the outer side of the insulating cup body 1, the insulating cup body 1 is made of salt-doped oxide material, a graphite core column 4 is placed on the inner side of the insulating cup cavity 2, a heating pipe assembly 5 is fixedly installed on the outer side of the outer cup wall 3, a graphite sheet 6 is sleeved on the outer side of the heating pipe assembly 5, the thickness of the insulating cup body 1 is 0.1-0.2 mm, and the insulating cup body 1 is integrally pressed; the heating pipe assembly 5 is rolled from an alloy steel strip of iron, chromium aluminum and a small amount of rare earth elements.

[0029] The ratio of sodium chloride particles to ferric oxide powder in the salt-doped oxide material is 98:2.

[0030] When the embodiment of the present application is used: the difference from the first embodiment is that ferric oxide powder is mixed with salt to obtain the insulating cup raw material, the mass ratio of sodium chloride particles to ferric oxide powder is 98:2, and the insulating cup body is formed by pressing, and a salt-doped cup is used to replace the traditional insulating cup, so as to realize the two-in-one of the insulating cup and the iron cup. When in use, the insulating cup body 1 is made to face the heating tube assembly 5, and finally the graphite core column 4 is placed in the insulating cup cavity 2. During the diamond synthesis process, the maximum temperature of the heating tube assembly 5 is less than 1500 degrees Celsius. At this temperature, chromium does not reach the melting temperature, and aluminum and a small amount of rare earth penetrate into the molten salt cup in a molten state, and then generate aluminum oxide and rare earth oxides with the ferric oxide or ferric oxide therein, thereby ensuring that the graphite core column 4 is not contaminated by impurities. After synthesis, the diamond color of the outer periphery of the diamond is normal, the production process is simpler, and it can be mass-produced, and the mass ratio of oxides in the salt cup is less than 40%.

[0031] Embodiment three:

[0032] See also Figure 1-4 The present invention provides an insulating cup for artificial diamond, comprising an insulating cup body 1, characterized in that: an insulating cup cavity 2 is provided in the middle of the insulating cup body 1, an outer cup wall 3 is provided on the outer side of the insulating cup body 1, the insulating cup body 1 is made of salt-doped oxide material, a graphite core column 4 is placed on the inner side of the insulating cup cavity 2, a heating tube assembly 5 is fixedly installed on the outer side of the outer cup wall 3, a graphite sheet 6 is sleeved on the outer side of the heating tube assembly 5, the thickness of the insulating cup body 1 is 0.1-0.2 mm, and the insulating cup body 1 is integrally pressed; the heating tube assembly 5 is rolled from an alloy steel strip of iron, chromium aluminum and a small amount of rare earth elements.

[0033] The ratio of sodium chloride particles, ferroferric oxide powder and ferrous oxide powder in the salt-doped oxide material is 96:2:2.

[0034] When the embodiment of the present application is used: the difference from the first and second embodiments is that sodium chloride particles, ferroferric oxide powder and ferric oxide powder are mixed to form the raw materials of the insulating cup, the ratio of sodium chloride particles, ferroferric oxide powder and ferric oxide powder is 96:2:2, and the insulating cup body is formed by pressing, and a doped salt cup is used to replace the traditional insulating cup to achieve the two-in-one of the insulating cup and the iron cup. When in use, the insulating cup body 1 is made to face the heating tube assembly 5, and finally the graphite core column 4 is placed in the insulating cup cavity 2. During the diamond synthesis process, the maximum temperature of the heating tube assembly 5 is less than 1500 degrees Celsius. At this temperature, chromium does not reach the melting temperature, and aluminum and a small amount of rare earth penetrate into the molten salt cup in a molten state, and then generate aluminum oxide and rare earth oxides with the ferric oxide or ferroferric oxide therein, thereby ensuring that the graphite core column 4 is not contaminated by impurities. After synthesis, the diamond color of the outer periphery of the diamond is normal, the production process is simpler, and it can be mass-produced, and the mass ratio of oxides in the salt cup is less than 40%.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An insulating cup for artificial diamond, comprising an insulating cup body (1), Features: An insulating cup cavity (2) is provided in the middle of the insulating cup body (1), an outer cup wall (3) is provided on the outer side of the insulating cup body (1), the insulating cup body (1) is made of a salt-doped oxide material, a graphite core column (4) is placed on the inner side of the insulating cup cavity (2), a heating pipe assembly (5) is fixedly mounted on the outer side of the outer cup wall (3), a graphite sheet (6) is sleeved on the outer side of the heating pipe assembly (5), the ratio of sodium chloride particles to ferroferric oxide powder in the salt-doped oxide material is 97:3, or the ratio of sodium chloride particles to ferroferric oxide powder is 98:2, or the ratio of sodium chloride particles, ferroferric oxide powder and ferroferric oxide powder is 96:2:2, and the heating pipe assembly (5) is rolled from an alloy steel strip containing iron, chromium, aluminum and a small amount of rare earth elements.

2. The insulating cup for artificial diamond according to claim 1, Features: The thickness of the insulating cup body (1) is 0.1-0.2 mm.

3. The insulating cup for artificial diamond according to claim 1, Features: The insulating cup body (1) is integrally pressed and formed.

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