CN111606554A - Amorphous alloy glass compression molding die, manufacturing method and application thereof - Google Patents
Amorphous alloy glass compression molding die, manufacturing method and application thereof Download PDFInfo
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- CN111606554A CN111606554A CN201910132695.1A CN201910132695A CN111606554A CN 111606554 A CN111606554 A CN 111606554A CN 201910132695 A CN201910132695 A CN 201910132695A CN 111606554 A CN111606554 A CN 111606554A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/10—Amorphous alloys with molybdenum, tungsten, niobium, tantalum, titanium, or zirconium or Hf as the major constituent
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Abstract
The invention relates to a die for compression molding of amorphous alloy glass and a manufacturing method thereof. The die material is an amorphous alloy material, and the amorphous alloy material comprises the following components: ira‑[Tax(Nb)1‑x]b‑[Niy(Co)z(Fe)r(Cu)m(V)n(W)k]c‑Bd(ii) a Compared with the existing tungsten carbide mold, the preparation cost is low, the efficiency is high, and various microstructures can be prepared by utilizing the thermoplastic forming capability of the amorphous alloy. Meanwhile, the amorphous alloy die has good thermal stability, oxidation resistance and strong acid corrosion resistance. The mould can greatly reduce the glass moulding technologyThe cost provides a strong support for the popularization of the glass molding technology and the application of the amorphous alloy.
Description
Technical Field
The invention belongs to the field of glass compression molding, and particularly relates to a development and manufacturing method and application of an amorphous alloy glass compression molding die.
Background
The development of modern optical systems towards miniaturization, light weight, integration and scale, especially the development of aspheric mirror processing technology in recent years, has brought revolutionary changes to the whole optical design and processing industry. Aspherical lenses have been widely used in digital cameras, DVD read/write heads, optoelectronic communication, telescopes, and in the fields of defense and aerospace. Compared with a spherical lens, the aspheric lens has the greatest advantage that the influence of spherical aberration on the imaging quality of an optical system can be effectively eliminated. Although in conventional optical designs, spherical aberration can be compensated by cascading several spherical mirrors, the complexity and cost of the overall optical system is increased. Therefore, the aspheric lens has incomparable advantages in improving the imaging quality of the optical system and reducing the complexity of the system. Although aspheric lenses have many advantages, they are more difficult to manufacture than spherical lenses.
The processing of a conventional aspheric lens generally includes complex steps such as preliminary molding, polishing and local polishing. Firstly, an approximate spherical surface shape is processed by using a traditional precision grinding or grinding method, then the spherical surface shape is corrected to a designed aspheric surface shape by using an ultra-precision numerical control machine tool, and finally the required surface shape and the required coarse sugar degree requirement are achieved by polishing. Or firstly, an ultra-precise single-point diamond lathe is used for directly processing the aspheric surface, and then the surface type quality of the aspheric surface is further improved through polishing treatment. However, these conventional processing techniques have high cost and long cycle and cannot be mass-produced, which limits the large-scale application of aspheric lenses. Therefore, a method for processing aspheric lenses with high precision, low cost and suitable for mass production is needed. The popularization and the application of the optical glass precision hot-press molding technology have great innovation significance in the aspect of processing optical glass lenses. The precision hot-press molding technology of the optical glass is applied to the processing production of the aspheric lens, the defects of the traditional processing method are overcome, and the yield and the quality of the aspheric glass lens are greatly improved.
The mold plays a decisive role in the glass compression molding technology, and the mold directly influences the quality of a molded finished product. The mould material used by the existing glass moulding press is mainly tungsten carbide which has the characteristics of high temperature resistance, low thermal expansion coefficient and the like, but the hardness of the mould material is extremely low and is only lower than that of diamond, so that the processing is very difficult. The processing of the die requires ultra-precise numerical control processing equipment, and the cost of the die is very high due to the use of payment equipment and the loss cost of a cutter. Glass molding is mainly used for aspheric lenses, which requires that the curved surface of a tungsten carbide mold is processed into an aspheric surface, which is very difficult. If a good-performing and easily-processed material can be developed to replace tungsten carbide, the development of the glass molding technology can be greatly promoted. The high-temperature amorphous alloy is an ideal glass molding material, has very good superplasticity forming and can meet the requirements of optical processing. Meanwhile, the glass can keep certain hardness at high temperature, and can meet the requirement of glass mould pressing. However, the use temperature of the existing amorphous alloy is only below 500 ℃, and the temperature of glass molding cannot be met. Meanwhile, the literature does not disclose a mold for compression molding of amorphous alloy glass.
Disclosure of Invention
Therefore, the invention aims to overcome the defects in the prior art and provide an amorphous alloy glass compression molding die, a manufacturing method and application thereof.
In order to achieve the above object, a first aspect of the present invention provides an amorphous alloy glass compression molding die, wherein the die material is an amorphous alloy material, and the amorphous alloy material comprises the following components:
Ira-[Tax(Nb)1-x]b-[Niy(Co)z(Fe)r(Cu)m(V)n(W)k]c-Bd；
wherein the content of the first and second substances,
a. b, c and d are atomic percentages, a is more than or equal to 20 and less than or equal to 40, b is more than or equal to 30 and less than or equal to 40, c is more than or equal to 20 and less than or equal to 35, d is more than or equal to 0 and less than or equal to 15, and a + b + c + d is 100;
x, y, z, r, m, n and k are atomic percentages, x, y, z, r, m, n and k are more than or equal to 0 and less than or equal to 1, and y + z + r + m + n + k is less than or equal to 1.
According to the mold of the first aspect of the invention, the amorphous phase in the amorphous alloy material is not less than 75%;
the glass transition temperature of the amorphous alloy material is 800-1200 ℃; and/or
The width of the supercooling liquid phase region of the amorphous alloy material is 50-130 ℃, and preferably 70-130 ℃.
A second aspect of the present invention provides a method of preparing the mold of the first aspect, the method comprising the steps of:
(1) preparing an amorphous alloy plate;
(2) placing the amorphous alloy plate prepared in the step (1) on a high-temperature alloy with a prefabricated porous structure, and simultaneously placing the amorphous alloy plate into a cavity of a mechanical testing machine with a heating device;
(3) heating to a supercooled liquid region of the amorphous alloy, reducing the viscosity of the amorphous alloy material, controlling a mechanical tester to apply a downward pressure, and pressing the softened amorphous alloy into a high-temperature alloy structure;
(4) and (3) maintaining a certain downward pressure by a mechanical testing machine, cooling, and demolding to obtain the amorphous alloy molded glass mold.
The preparation method according to the second aspect of the present invention, wherein in the step (1), the preparation method of the amorphous alloy sheet material comprises the following steps:
(I) preparing materials: preparing a raw material of said chromium metal element in atomic percent according to claim 1;
(II) ingot casting: smelting and mixing all the components in an electric arc furnace uniformly, and cooling to obtain a master alloy ingot; preferably, the electric arc furnace is a titanium-adsorbed argon atmosphere protected electric arc furnace;
and (III) preparing the amorphous alloy plate by using the master alloy ingot casting electric arc furnace suction casting device prepared in the step (II).
Preferably, in the step (II), when the amorphous metal material does not contain B, that is, d is 0, the ingredients in the step (I) are melted and mixed uniformly in an electric arc furnace, and after cooling, a master alloy ingot is obtained;
and (3) when the amorphous metal material contains B, namely d is not equal to 0, wrapping the B with Ta or niobium Nb, smelting into tantalum boron or niobium boron alloy, then smelting and uniformly mixing with the other components in the step (I) in an electric arc furnace, and cooling to obtain a master alloy ingot.
The production method according to the second aspect of the invention, wherein, in the step (3), the heating atmosphere is an argon atmosphere; preferably, the argon pressure is 0.01 to 0.05MPa, preferably 0.02 to 0.03MPa, and the preparation method according to the second aspect of the invention, wherein in the step (3) and the step (4), the downward pressure applied by the mechanical testing machine is 500 to 1500N, preferably 1100 to 1300N, and most preferably 1200N; and/or
In the step (3), the downward speed of the mechanical testing machine is 0.01-0.05 mm/s, preferably 0.01-0.03 mm/s, and most preferably 0.02 mm/s.
A third aspect of the invention provides a glass press molding method using the mold according to claim 1 or 2;
preferably, the method comprises the steps of:
(A) placing glass on the mold and simultaneously placing the glass into a cavity of a mechanical testing machine with a heating device;
(B) heating to the softening temperature of the glass, controlling and applying a downward pressure by a mechanical testing machine, and pressing the softened glass into the mold;
(C) and (3) maintaining a certain downward pressure by using a mechanical testing machine, cooling, and demolding to obtain the molded glass.
A fourth aspect of the invention provides the use of an amorphous alloy glass compression moulding mould of the first aspect or prepared according to the method of the second aspect in the preparation of an aspherical lens.
A fourth aspect of the present invention provides an aspherical lens produced by the method of the third aspect.
The invention aims to provide an amorphous alloy glass compression molding die, wherein the glass transition temperature Tg of an amorphous alloy material is above 800 ℃, a supercooled liquid phase molding area of about 100K is provided, and the amorphous alloy glass compression molding die can be molded to a micron or even nano scale. Meanwhile, the high-hardness glass mold has extremely high oxidation resistance and corrosion resistance, still keeps high hardness at 700 ℃, and ensures the stability of the glass mold.
The invention also aims to provide a manufacturing method of the amorphous alloy glass mould pressing die.
The purpose of the invention is realized by the following technical scheme:
the invention provides an amorphous alloy glass compression molding die which is made of an amorphous alloy material consisting of the following components,
Ira-[Tax(Nb)1-x]b-[Niy(Co)z(Fe)r(Cu)m(V)n(W)k]c-Bd
wherein the content of the first and second substances,
a. b, c and d are atomic percentage, and a is more than or equal to 20 and less than or equal to 40, b is more than or equal to 30 and less than or equal to 40, and c is more than or equal to 20 and less than or equal to 40_35，0≤d≤15，a+b+c+d＝100；
x, y, z, r, m, n and k are atomic fractions, x, y, z, r, m, n and k are more than or equal to 0 and less than or equal to 1, and y + z + r + m + n + k is less than or equal to 1;
wherein, the amorphous phase in the amorphous alloy material is not less than 75%, preferably not less than 90% in the embodiment of the present invention, the amorphous alloy material can be prepared by the following method, including the following steps:
1) preparing materials: according to the above Ira-[Tax(Nb)1-x]b-[Niy(Co)z(Fe)r(Cu)m(V)n(W)k]c-BdPreparing raw materials of various metal elements with required atomic molar ratio;
2) ingot casting: if the component proportion does not contain boron (B), namely d is 0, smelting and mixing the components in the step 1) in an electric arc furnace protected by argon atmosphere adsorbed by titanium uniformly, and cooling to obtain a master alloy ingot; if the component proportion contains boron (B), namely d is not equal to 0, wrapping boron by tantalum (Ta) or niobium (Nb) to be smelted into tantalum-boron or niobium-boron alloy, then smelting and mixing the tantalum-boron or niobium-boron alloy and the rest of components in the step 1) in an electric arc furnace protected by argon atmosphere adsorbed by titanium uniformly, and cooling to obtain a mother alloy ingot.
The invention provides a method for manufacturing a glass mould pressing die for preparing the amorphous alloy, which comprises the following steps:
1. the amorphous alloy material Ira-[Tax(Nb)1-x]b-[Niy(Co)z(Fe)r(Cu)m(V)n(W)k]c-BdPreparing an amorphous alloy plate by using the master alloy ingot casting suction casting device of the electric arc furnace, wherein the plate is a cuboid with the length of 50mm, the width of 10mm and the thickness of 1 mm;
2. placing an amorphous alloy plate on a tungsten carbide high-temperature alloy with a prefabricated porous structure, and simultaneously placing the amorphous alloy plate into a mechanical testing machine cavity with a high-temperature heating device;
3. under the protection of argon, heating the plate prepared in the step 1 to a supercooling liquid phase region by using a resistance furnace, and meanwhile, placing a tungsten carbide high-temperature alloy with a prefabricated porous structure below the plate; when the viscosity of the amorphous alloy material is reduced, controlling to apply a downward pressure by a mechanical tester, and pressing the softened amorphous alloy into a tungsten carbide alloy structure;
4. keeping a certain pressure, slowly cooling to room temperature. And opening the cavity and demoulding to obtain the amorphous alloy mould pressing glass mould.
The amorphous alloy glass molding die of the invention can have the following beneficial effects without limitation:
1. the preparation efficiency is high. The amorphous alloy glass mould pressing die is prepared by thermoplastic one-step forming of amorphous alloy, and the complex process of traditional diamond cutting and polishing is omitted.
2. The preparation cost is low. Compared with the traditional tungsten carbide cutting die, the amorphous alloy glass die-pressing die does not need an ultra-precise numerical control machine tool, does not have the loss of a cutter, and greatly reduces the cost.
3. The mould precision is high, and the smooth finish is high. The thermoplastic property of the amorphous alloy can accurately copy micron-level or even nano-level structures, and the accuracy of the die is ensured. Meanwhile, the molding stage does not have a polishing process, and the surface finish is high by virtue of flow molding after the alloy is softened.
4. The service life of the die is long. The amorphous alloy material used in the invention has good high-temperature oxidation resistance and corrosion resistance, and the repeated use frequency is higher.
5. The thermal expansion coefficient of the mold is low. The amorphous alloy material used in the invention has a low thermal expansion coefficient, and a process of mutual bonding with a glass material does not exist in the demolding process. Is favorable for demoulding.
Drawings
Embodiments of the invention are described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 shows a Differential Scanning Calorimetry (DSC) curve of the amorphous alloy material prepared in example 1 of the present invention, with a temperature rise rate of 20K/min.
FIG. 2 is a diagram showing an object of the amorphous alloy glass press-molding die prepared in example 1 of the present invention.
Fig. 3 shows an XRD pattern of the amorphous alloy glass press-molding mold prepared in example 1 of the present invention.
FIG. 4 shows a royal water corrosion pattern of an amorphous alloy glass press mold prepared in example 1 of the present invention.
FIG. 5 shows a diagram of a molded glass object in example 2 of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples, which, however, are to be construed as merely illustrative, and not limitative of the remainder of the disclosure in any way whatsoever.
This section generally describes the materials used in the testing of the present invention, as well as the testing methods. Although many materials and methods of operation are known in the art for the purpose of carrying out the invention, the invention is nevertheless described herein in as detail as possible. It will be apparent to those skilled in the art that the materials and methods of operation used in the present invention are well within the skill of the art, provided that they are not specifically illustrated.
The reagents and apparatus used in the following examples are as follows
Reagent:
ir, Ni, Ta, B, Nb, Co, V, W, Fe, Cu, available from Beijing Jiaming platinum nonferrous metals Co Ltd;
porous tungsten carbide superalloy, glass (designation H-K9L), available from tungsten carbide designation japanese standard V5, available from kunshanbao corporation cemented carbide; glass brand H-K9L, available from Kunshan Cold light photoelectric materials, Inc.
The instrument comprises the following steps:
differential scanning calorimeter available from Nachi company, Germany, model DSC 404F 3;
a mechanical testing machine, available from Meister systems, Inc., Model 64;
x-ray diffractometer, model X-ray single crystal diffractometer D8, available from Bruker, USA.
Example 1
This example is used to illustrate the preparation of high temperature amorphous alloy material.
The preparation method of the amorphous alloy material comprises the following steps:
the components of Ir, Ni and Ta with the purity of 99.5 wt% (weight percentage) of raw materials are mixed according to the molar weight ratio of 33: 28: 39, repeatedly melting and mixing them uniformly (i.e. melting all the components) in an electric arc furnace with argon atmosphere adsorbed by titanium, and cooling to obtain Ir33Ni28Ta39Casting a mother alloy ingot; then using conventional metal mold casting method to remelt the cast ingot (only need to melt all the components), sucking the mother alloy melt into a water-cooled copper mold by using a suction casting device in an electric arc furnace to obtain Ir as the component33Ni28Ta39A rectangular amorphous alloy having a length of 50mm, a width of 10mm and a thickness (D) of 1mm, an amorphous phase content of more than 90%, and a thermal expansion coefficient of 6.0 × 10-6/K。
The Differential Scanning Calorimetry (DSC) profile of the metallic glass is shown in FIG. 1, wherein the addition of the sampleThe heat rate (R) was 20K/min. As can be seen from the figure: ir33Ni28Ta39Glass transition temperature (T) of the alloyg) Crystallization onset temperature (T)x) And width of supercooled liquid region (Δ T ═ T)x-Tg) 883 ℃, 986 ℃ and 103 ℃. The amorphous alloy has ultrahigh glass transition temperature and ultrahigh thermal stability. The processing temperature was set at 950 ℃.
Example 2
This example is used to illustrate the preparation of high temperature amorphous alloy material.
Ir, Ni, Ta and B components with the purity of 99.5 wt% (weight percentage) are mixed according to the molar weight ratio of 35: 20: after the preparation of 40:5, because the melting point of B is higher and the electric arc melting can not be carried out independently, wrapping the high-melting-point Ta sheet with the B, repeatedly melting and uniformly mixing the Ta sheet and the B sheet in an electric arc furnace in an argon atmosphere adsorbed by titanium, and cooling to obtain a TaB master alloy ingot; then adding prepared Ir and Ni simple substances, and repeating the steps for smelting and mixing to obtain Ir35Ni20Ta40B5(ii) a Finally, using a conventional metal mold casting method to remelt the cast ingot (only the components are completely melted), and sucking the master alloy melt into a water-cooling copper mold by using a suction casting device in an electric arc furnace to obtain Ir serving as the component35Ni20Ta40B5A rectangular amorphous alloy having a length of 50mm, a width of 10mm and a thickness (D) of suitably 1mm, an amorphous phase exceeding 90%, and a thermal expansion coefficient of 6.5 × 10-6/K。
Examples 3 to 15
This example is used to illustrate the preparation of high temperature amorphous alloy material.
Amorphous alloys of various compositions were prepared as in example 1, and the composition and thermophysical parameters of the obtained amorphous alloy materials were measured and are listed in table 1 below. Thereby setting a specific processing temperature.
TABLE 1 compositions and thermophysical parameters of amorphous alloy materials of examples 2-15
The amorphous phase content of the amorphous alloy materials of the embodiments 2 to 15 exceeds 90 percent, and the thermal expansion coefficient is 6 to 7 × 10-6and/K is between.
Example 16
This example illustrates the preparation of an amorphous alloy glass hot press mold (using Ir)33Ni28Ta39For example).
Ir prepared in example 133Ni28Ta39The amorphous alloy material is put into a cavity of a mechanical testing machine with a heating device, and the prefabricated porous tungsten carbide high-temperature alloy is put at the bottom of the amorphous alloy material.
The stainless steel vacuum chamber is vacuumized to 10 DEG-3Pa, closing a molecular pump valve (not shown in the figure); then an argon gas charging valve (not shown in the figure) is opened to charge high-purity (99.999%) argon gas until the air pressure in the vacuum chamber is 0.02MPa, so that the oxidation of the material caused by overhigh temperature is avoided. The resistance furnace is operated, the temperature is raised to 950 ℃ at the temperature rise rate of 10 ℃/minute, and Ir is obtained at the time33Ni28Ta39The amorphous alloy enters a supercooling liquid phase region, and the viscosity is sharply reduced. Meanwhile, the mechanical testing machine controls the pressure head to move downwards, the descending speed is 0.02mm/s, and the amorphous alloy is pressed into the tungsten carbide high-temperature alloy of the prefabricated hole. As the head pressure drops, the pressure will gradually increase until 1200N. The reason for this process setting 1200N is to ensure that the amorphous alloy has been sufficiently pressed into the tungsten carbide superalloy without being so high as to cause head damage and material fracture.
And (3) cooling, closing the heating power supply, conducting heat through the contact of the furnace door and the outside, cooling to 200 ℃ for about 1 hour, and keeping the pressure. Ensuring the amorphous alloy to be shaped when the temperature is reduced. Finally cooling to room temperature and aerating to normal pressure. And opening the furnace door, and taking out the amorphous alloy die. Because of Ir33Ni28Ta39The amorphous alloy has low thermal expansion coefficient and can be easily demoulded.
FIG. 2 is Ir33Ni28Ta39The amorphous alloy mold is a picture in which the white protrusions are in special structures after thermoplastic molding and have large diametersAbout 200 microns smaller and smooth in surface. The special structure is a glass compression molding geometric structure.
FIG. 3 shows the resultant Ir33Ni28Ta39The amorphous alloy mold is still in an amorphous state, which shows that the original high-strength and oxidation-resistant characteristics can be still maintained.
FIG. 4 is Ir33Ni28Ta39Static corrosion test of the amorphous alloy mold in aqua regia shows that the mold still has no quality loss after 3 months of static corrosion, which indicates the corrosion resistance of the mold.
Similarly, according to the similar steps in this embodiment, the glass hot-pressing mold can be prepared by using any one of the amorphous alloy materials in embodiments 2 to 15.
Example 17
This example illustrates the hot pressing of glass using the amorphous alloy mold of the present invention.
Ir prepared in example 1633Ni28Ta39The amorphous alloy glass mould pressing mold is placed in a cavity of a mechanical testing machine, and glass (the mark is H-K9L) needing mould pressing is placed above the mould. The stainless steel vacuum chamber is vacuumized to 10 DEG-3Pa, closing a molecular pump valve (not shown in the figure); then an argon gas charging valve (not shown in the figure) is opened to charge high-purity (99.999%) argon gas until the air pressure in the vacuum chamber is 0.02MPa, so that the oxidation of the glass and the mold caused by overhigh temperature is avoided. The resistance furnace was operated and the temperature was raised to 660 ℃ at a rate of 10 ℃/min (softening temperature of glass). At this point the press glass has softened and the amorphous alloy mold still retains very high strength. Meanwhile, the mechanical testing machine controls the pressure head to move downwards, the descending speed is 0.02mm/s, and the molded glass is pressed into a mold with a prefabricated structure. As the head pressure drops, the pressure will gradually increase until 500N, stopping downward. The reason for this process setting of 500N is that too high may cause the glass material to crack.
The heating power supply is turned off after the temperature is reduced, heat is conducted through the contact of the furnace door and the outside, and the furnace is cooled to 200 ℃ for about half an hour, but the pressure is continuously maintained. The shaping of the mould pressing glass is ensured when the temperature is reduced. Cooling to room temperature, and aerating to normal pressure. And opening the furnace door, and taking out the compression molding die and the die. Because of Ir33Ni28Ta39The thermal expansion coefficient of the amorphous alloy is low, and the die pressing glass can be easily demoulded.
FIG. 5 is a pictorial representation of a molded glass. It can be seen that the glass has successfully replicated Ir33Ni28Ta39The structure of the amorphous alloy mould. The process is one-step forming, high in efficiency and low in cost. The amorphous alloy die can be used for multiple times.
Similarly, according to the similar steps in this embodiment, the glass can be molded by using the glass hot-pressing mold prepared from any one of the amorphous alloy materials in embodiments 2 to 15.
Although the present invention has been described to a certain extent, it is apparent that appropriate changes in the respective conditions may be made without departing from the spirit and scope of the present invention. It is to be understood that the invention is not limited to the described embodiments, but is to be accorded the scope consistent with the claims, including equivalents of each element described.
Claims (10)
1. The amorphous alloy glass compression molding die is characterized in that the die material is an amorphous alloy material, and the amorphous alloy material comprises the following components:
Ira-[Tax(Nb)1-x]b-[Niy(Co)z(Fe)r(Cu)m(V)n(W)k]c-Bd；
wherein the content of the first and second substances,
a. b, c and d are atomic percentages, a is more than or equal to 20 and less than or equal to 40, b is more than or equal to 30 and less than or equal to 40, c is more than or equal to 20 and less than or equal to 35, d is more than or equal to 0 and less than or equal to 15, and a + b + c + d is 100;
x, y, z, r, m, n and k are atomic percentages, x, y, z, r, m, n and k are more than or equal to 0 and less than or equal to 1, and y + z + r + m + n + k is less than or equal to 1.
2. The mold according to claim 1, wherein the amorphous phase in the amorphous alloy material is not less than 75%, preferably not less than 90%;
the glass transition temperature of the amorphous alloy material is 800-1200 ℃; and/or
The width of the supercooling liquid phase region of the amorphous alloy material is 50-130 ℃, and preferably 70-130 ℃.
3. Method for the preparation of a mould according to claim 1 or 2, characterised in that it comprises the following steps:
(1) preparing an amorphous alloy plate;
(2) placing the amorphous alloy plate prepared in the step (1) on a high-temperature alloy with a prefabricated porous structure, and simultaneously placing the amorphous alloy plate into a cavity of a mechanical testing machine with a heating device;
(3) heating to a supercooled liquid region of the amorphous alloy, reducing the viscosity of the amorphous alloy material, controlling a mechanical tester to apply a downward pressure, and pressing the softened amorphous alloy into a high-temperature alloy structure;
(4) and (3) maintaining a certain downward pressure by a mechanical testing machine, cooling, and demolding to obtain the amorphous alloy molded glass mold.
4. The method according to claim 3, wherein in the step (1), the method for preparing the amorphous alloy sheet comprises the following steps:
(I) preparing materials: preparing a raw material of said chromium metal element in atomic percent according to claim 1;
(II) ingot casting: smelting and mixing all the components in an electric arc furnace uniformly, and cooling to obtain a master alloy ingot; preferably, the electric arc furnace is a titanium-adsorbed argon atmosphere protected electric arc furnace;
and (III) preparing the amorphous alloy plate by using the master alloy ingot casting electric arc furnace suction casting device prepared in the step (II).
5. The method according to claim 4, wherein in the step (II), when the amorphous metal material does not contain B, namely d is 0, the ingredients in the step (I) are melted and mixed uniformly in an electric arc furnace, and a master alloy ingot is obtained after cooling;
and (3) when the amorphous metal material contains B, namely d is not equal to 0, wrapping the B with Ta or niobium Nb, smelting into tantalum boron or niobium boron alloy, then smelting and uniformly mixing with the other components in the step (I) in an electric arc furnace, and cooling to obtain a master alloy ingot.
6. The method according to any one of claims 3 to 5, wherein in the step (3), the heating atmosphere is an argon atmosphere; preferably, the argon pressure is 0.01 to 0.05MPa, preferably 0.02 to 0.03 MPa.
7. The method according to any one of claims 3 to 6, wherein in the step (3) and the step (4), the downward pressure applied by the mechanical testing machine is 500-1500N, preferably 1100-1300N, and most preferably 1200N; and/or
In the step (3), the downward speed of the mechanical testing machine is 0.01-0.05 mm/s, preferably 0.01-0.03 mm/s, and most preferably 0.02 mm/s.
8. A glass molding method characterized by using the mold according to claim 1 or 2;
preferably, the method comprises the steps of:
(A) placing glass on the mold and simultaneously placing the glass into a cavity of a mechanical testing machine with a heating device;
(B) heating to the softening temperature of the glass, controlling and applying a downward pressure by a mechanical testing machine, and pressing the softened glass into the mold;
(C) and (3) maintaining a certain downward pressure by using a mechanical testing machine, cooling, and demolding to obtain the molded glass.
9. Use of an amorphous alloy glass compression molding die according to claim 1 or 2 or prepared according to any one of claims 3 to 7 for the preparation of an aspherical lens.
10. An aspheric lens produced by the method of claim 8.
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| CN201910132695.1A Pending CN111606554A (en) | 2019-02-22 | 2019-02-22 | Amorphous alloy glass compression molding die, manufacturing method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113480154A (en) * | 2021-08-19 | 2021-10-08 | 湖南新田岭钨业有限公司 | Glass lens precision compression molding device in mining equipment |
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| JP2002326232A (en) * | 2001-02-28 | 2002-11-12 | Konica Corp | Mold for molding optical surface, optical element, lens and master mold |
| CN104308452A (en) * | 2014-08-21 | 2015-01-28 | 清华大学 | Amorphous alloy micro-nano structure stamping forming mould and preparation and application methods thereof |
| US20160068422A1 (en) * | 2014-09-04 | 2016-03-10 | Canon Kabushiki Kaisha | Amorphous alloy molding die and method for forming optical element |
| CN108977737A (en) * | 2017-05-31 | 2018-12-11 | 中国科学院物理研究所 | Block metal glass and preparation method thereof containing iridium |
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| JP2002326232A (en) * | 2001-02-28 | 2002-11-12 | Konica Corp | Mold for molding optical surface, optical element, lens and master mold |
| CN104308452A (en) * | 2014-08-21 | 2015-01-28 | 清华大学 | Amorphous alloy micro-nano structure stamping forming mould and preparation and application methods thereof |
| US20160068422A1 (en) * | 2014-09-04 | 2016-03-10 | Canon Kabushiki Kaisha | Amorphous alloy molding die and method for forming optical element |
| CN108977737A (en) * | 2017-05-31 | 2018-12-11 | 中国科学院物理研究所 | Block metal glass and preparation method thereof containing iridium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113480154A (en) * | 2021-08-19 | 2021-10-08 | 湖南新田岭钨业有限公司 | Glass lens precision compression molding device in mining equipment |
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