CN114101475A - Ultrasonic impression forming method and forming equipment for high-temperature high-strength amorphous alloy micro-mold - Google Patents
Ultrasonic impression forming method and forming equipment for high-temperature high-strength amorphous alloy micro-mold Download PDFInfo
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- CN114101475A CN114101475A CN202111189159.9A CN202111189159A CN114101475A CN 114101475 A CN114101475 A CN 114101475A CN 202111189159 A CN202111189159 A CN 202111189159A CN 114101475 A CN114101475 A CN 114101475A
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- 238000000034 method Methods 0.000 title claims abstract description 40
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- 239000000203 mixture Substances 0.000 claims description 10
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- 229910045601 alloy Inorganic materials 0.000 claims description 5
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- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 3
- 229910001370 Se alloy Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052762 osmium Inorganic materials 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
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- 229910052751 metal Inorganic materials 0.000 description 1
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- 150000004767 nitrides Chemical class 0.000 description 1
- 229910000923 precious metal alloy Inorganic materials 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/008—Processes combined with methods covered by groups B21D1/00 - B21D31/00 involving vibration, e.g. ultrasonic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/01—Selection of materials
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/04—Amorphous alloys with nickel or cobalt as the major constituent
-
- 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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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention is suitable for the technical field of amorphous alloy micro-mold production, and discloses an ultrasonic imprinting forming method and forming equipment of a high-temperature high-strength amorphous alloy micro-mold. The ultrasonic stamping forming method comprises the following steps: preparing an amorphous alloy blank and a positioning seat provided with a female die; arranging the amorphous alloy blank and one side of the master die with the microstructure oppositely; and (3) generating an interaction force between the amorphous alloy blank and the microstructure of the female die by an ultrasonic punch to complete impression forming. The forming equipment comprises a positioning seat capable of mounting a female die, wherein the female die is provided with a microstructure surface capable of being opposite to the amorphous alloy blank; the ultrasonic stamping forming equipment also comprises an ultrasonic punch which enables the amorphous alloy blank and the micro structure of the female die to generate interaction force to complete stamping forming. According to the ultrasonic stamping forming method and the forming equipment of the high-temperature high-strength amorphous alloy micro-mold, the prepared amorphous alloy micro-mold is good in material performance and low in manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of amorphous alloy micro-mold production, and particularly relates to an ultrasonic imprinting forming method and forming equipment for a high-temperature high-strength amorphous alloy micro-mold.
Background
In the fields of aerospace, weaponry, information communication and advanced manufacturing, there is a great demand for optical glass elements such as aspherical lenses, microlenses and the like, and precision press molding is a leading technology for manufacturing such elements. The optical glass is usually molded at a temperature of 500 ℃ or higher, for example, BK-7 has a glass transition point of about 650 ℃, which requires that the mold should maintain high hardness and strength, surface smoothness, thermal stability, wear resistance and chemical stability at high temperature to cope with the multiple adverse effects of complicated stress, cold and hot cycles and corrosive environment during high temperature service.
The typical die materials in the prior art, such as tungsten carbide, silicon carbide and the like, need to be plated with some precious metal alloy films and metal nitride films on the surfaces to prevent the die from being adhered to glass. However, these mold materials are typically hard and brittle materials, which are difficult to process, and the coating process is added, which makes the mold manufacturing cost extremely high.
The amorphous alloy has the advantages of uniform structure, high strength, high hardness, abrasion resistance, small thermal expansion coefficient, atomic-level surface smoothness and the like, and is an ideal material for preparing high-precision die pressing dies. However, the glass transition temperature of the traditional amorphous alloy is low, the high-temperature strength and the thermal stability are poor, the service temperature is difficult to exceed 500 ℃, and the requirement of the current optical glass compression molding temperature cannot be met.
In addition, the traditional micro-die processing means mainly comprises single-point diamond turning, ultra-precise grinding and the like, but the technologies cannot be applied to the processing and forming of Ir-based high-temperature high-strength amorphous alloy, because the cutter is damaged due to the ultrahigh strength and the ultrahigh hardness of the Ir-based amorphous alloy, and in addition, the amorphous alloy part fails due to the intrinsic brittleness of the amorphous alloy during processing. At present, thermoplastic molding is a better scheme for solving the problem of micromachining Ir-based amorphous alloy molds, but the overhigh molding temperature (the glass transition point is as high as 820 ℃) has strict requirements on the tolerance, the vacuum degree and the like of thermoplastic molding equipment, so that the processing cost is higher and the processing process is more complicated. Meanwhile, the amorphous alloy is a metastable material, so that the amorphous alloy is subjected to the risk of performance reduction caused by crystallization or relaxation during thermoplastic molding, and the material reliability of the micromold is poor.
Disclosure of Invention
The present invention is directed to at least solve one of the above problems, and provides an ultrasonic imprint molding method and molding apparatus for a high-temperature high-strength amorphous alloy micro-mold, which can produce a micro-mold with good material reliability and low cost.
The technical scheme of the invention is as follows: an ultrasonic imprinting forming method of a high-temperature high-strength amorphous alloy micro-mold comprises the following steps:
s1: preparing an amorphous alloy blank and a positioning seat provided with a female die;
s2: arranging the amorphous alloy blank opposite to one surface of the master die with the microstructure;
s3: and generating an interaction force between the amorphous alloy blank and the microstructure of the female die through an ultrasonic punch to finish impression forming.
Optionally, wherein the step S1 includes the following steps:
s11: preparing a female die and a positioning seat with a guide hole, and matching the shape of the female die with the guide hole;
s12: and placing the master die in the guide hole, wherein the microstructure surface of the master die faces upwards.
Optionally, wherein the step S2 includes the following steps:
s21: and placing the amorphous alloy blank into the guide hole, and enabling the imprinting molding surface of the amorphous alloy blank to be seated on the microstructure facing the female die.
Optionally, the female die is made of die steel, cemented carbide or high-temperature alloy;
and/or the stamping forming surface of the amorphous alloy blank is polished and has the surface roughness Ra less than 10 nm.
Optionally, in step S3, the vibration frequency of the ultrasonic punch is 20000 Hz.
Optionally, the material of the master die is GH4169 high-temperature nickel alloy, and the microstructure of the master die is formed by single-point diamond machining.
Optionally, the amorphous alloy blank is an Ir-Ta-Ni-Se alloy system, and the atomic composition is Ira-Tab-Nic-SedWherein Se is at least one of Ru, Os, Rh, Pd, Pt, Nb, Fe and Co; a. b, c and d represent atomic composition percentage, wherein a is 12-47, b is 18-48, c is 15-38, d is 0.3-40, and a + b + c + d is 100.
Optionally, the composition of the amorphous alloy is Ir-Ni-Ta-Nb.
Optionally, the outer shapes of the ultrasonic punch and the female die are both circular, and the diameter of the ultrasonic punch is equal to that of the female die.
The invention also provides ultrasonic impression forming equipment of the amorphous alloy micro-mould, which comprises a positioning seat capable of mounting a female mould, wherein the female mould is provided with a micro-structure surface capable of being opposite to the amorphous alloy blank;
the ultrasonic stamping forming equipment further comprises an ultrasonic punch which enables the amorphous alloy blank and the micro structure of the female die to generate interaction force to complete stamping forming.
According to the ultrasonic stamping forming method and the forming device of the high-temperature high-strength amorphous alloy micro-mold, the ultrasonic punch gives reciprocating stamping force to the amorphous alloy blank in the stamping process, the amorphous alloy can be subjected to reciprocating stamping force and micro vibration, the surface of the amorphous alloy is softened in the process to copy the structure of the surface of the female mold, so that stamping forming is completed, the processing process is simple, the processing cost is low, thermoplastic forming and other modes are not needed, the risk that the amorphous alloy is crystallized or relaxed to cause performance reduction in the thermoplastic forming process is avoided, and therefore the amorphous alloy micro-mold is good in material performance and low in manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of an ultrasonic imprint forming apparatus for a high-temperature high-strength amorphous alloy micro-mold according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of an amorphous alloy micro mold fabricated by an ultrasonic imprint molding apparatus for a high-temperature high-strength amorphous alloy micro mold according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an ultrasonic imprint molding method for a high-temperature high-strength amorphous alloy micro-mold according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.
In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments in the present invention will not be described in detail.
As shown in fig. 1 to 3, an ultrasonic imprint forming method for a high-temperature high-strength amorphous alloy micro-mold provided in an embodiment of the present invention includes the following steps:
s1: preparing an amorphous alloy blank 3 (high-temperature high-strength amorphous alloy) and a positioning seat 5 provided with a female die 2;
s2: arranging the amorphous alloy blank 3 opposite to one surface of the master die 2 with the microstructure;
s3: and (3) generating an interaction force between the amorphous alloy blank 3 and the microstructure of the female die 2 through an ultrasonic punch 4 to complete imprinting forming, so as to obtain the amorphous alloy micro die 31.
In this way, the amorphous alloy billet 3 is extruded in the direction of the microstructure of the master die 2 by the action of the ultrasonic punch 4 on the amorphous alloy billet 3, and the surface of the high-temperature amorphous alloy is softened under the load force of the high-frequency ultrasonic vibration of the ultrasonic punch 4, so that the structure on the master die 2 is copied, and the amorphous alloy micro die 31 is obtained. In the specific application, the ultrasonic punch 4 adopts an ultrasonic vibration punching mode with reciprocating micro vibration, and the vibration frequency can be 18000 to 22000Hz (20000 Hz in the embodiment); the ultrasonic punch 4 gives reciprocating punching force to the amorphous alloy blank 3 in the punching process, and the size of the punching force can be adjusted between 5N and 1000N; that is, the amorphous alloy can be subjected to reciprocating stamping force and micro-vibration, the surface of the amorphous alloy is softened in the process to copy the structure of the surface of the female die 2, so that the stamping forming is completed, the processing process is simple, the processing cost is low, the modes such as thermoplastic forming and the like are not needed, the risk that the amorphous alloy is crystallized or relaxed to cause performance reduction in the thermoplastic forming process is avoided, and therefore the amorphous alloy micro-die 31 is good in material performance and low in manufacturing cost.
Specifically, step S1 may include the following steps:
s11: preparing a master die 2 and a positioning seat 5 with a guide hole 51, and matching the appearance of the master die 2 with the guide hole 51;
s12: the master model 2 is placed in the guide hole 51 with the microstructure side of the master model 2 facing upward.
That is, the master die 2 can be placed in the guiding hole 51 of the positioning seat 5, the guiding hole 51 can limit the master die 2, and the depth of the guiding hole 51 can be larger than the thickness of the master die 2.
Specifically, step S2 may include the following steps:
s21: the amorphous alloy blank 3 is placed in the guide hole 51, the imprinting forming surface of the amorphous alloy blank 3 is seated on the microstructure facing the master die 2, namely the amorphous alloy blank 3 is seated above the microstructure of the master die 2, the ultrasonic punch 4 acts on the amorphous alloy blank 3 to enable the amorphous alloy blank 3 to downwards extrude the microstructure surface of the master die 2, and further enable the amorphous alloy blank 3 to be in contact with the microstructure surface at the upper end of the master die 2 (namely the imprinting forming surface) to be imprinted and formed with a corresponding required structure, the microstructure of the master die 2 can be provided with a groove structure or a protrusion structure, after the master die 2 is imprinted and the amorphous alloy blank 3 is imprinted and formed, the imprinting forming surface of the amorphous alloy blank 3 forms a corresponding protrusion microstructure at the groove structure corresponding to the master die 2, and the imprinting forming surface of the amorphous alloy blank 3 forms a corresponding groove microstructure at the protrusion structure corresponding to the master die 2, obtaining the high-temperature high-strength amorphous alloy micro-mold 31 for glass mold pressing.
In specific application, the bottom of the positioning seat 5 can be provided with the punching base 1, the ultrasonic punch 4 can be longitudinally arranged and located above the guide hole 51, and the ultrasonic punch 4 can move downwards to extend into the guide hole 51. In an alternative manner, the positioning socket 5 and the ultrasonic punch 4 may also be arranged horizontally opposite to each other, i.e., the ultrasonic punch 4 may also be arranged laterally and moved in a horizontal direction to extend into the guide hole 51.
In addition, as a possible alternative implementation manner, the amorphous alloy billet 3 may be placed first, and then the master die 2 may be placed, the microstructure surface of the master die 2 faces the imprint molding surface of the amorphous alloy billet 3, and the ultrasonic punch 4 may act on the master die 2 to imprint and mold the amorphous alloy billet 3.
In a specific application, the material of the female die 2 can be die steel, hard alloy or high-temperature alloy.
In a specific application, the stamping forming surface of the amorphous alloy blank 3 can be polished and the surface roughness Ra is less than 10 nm. In this embodiment, the imprint-molded surface of the amorphous alloy blank 3 is polished by at least 800 mesh, 1200 mesh, 2000 mesh sandpaper and diamond polishing paste with a grain size of 0.5 μm in sequence to form the amorphous alloy blank 3 (amorphous alloy substrate) with an imprint-molded surface quality Ra of less than 10 nm. In specific application, the polished surface of the amorphous alloy blank 3 is attached to the surface of the master die 2 with the microstructure.
In this embodiment, the vibration frequency of the ultrasonic punch 4 may be 20000Hz, and of course, the vibration frequency of the ultrasonic punch 4 may also be adjusted to other suitable ranges according to actual situations.
Specifically, the material of the master model 2 may be GH4169 high-temperature nickel alloy, the microstructure of the master model 2 may be formed by single-point diamond machining, and of course, the material of the master model 2 may be other alloy materials, or may be formed by other machining methods, such as spark erosion machining.
Specifically, the amorphous alloy ingot 3 may be an Ir-Ta-Ni-Se alloy system, and the atomic composition thereof is Ira-Tab-Nic-SedWherein Se can be at least one of Ru, Os, Rh, Pd, Pt, Nb, Fe and Co; a. b, c and d represent atomic composition percentage, wherein a is 12-47, b is 18-48, c is 15-38, d is 0.3-40, and a + b + c + d is 100.
In this embodiment, the amorphous alloy ingot 3 may have a composition of Ir-Ni-Ta-Nb (Ir)a-Tab-Nic-Sed) Namely, the Se is Nb, the glass forming capability of the Se is more than 5mm, the glass transition temperature is not less than 830 ℃, the strength is not less than 5.4GPa, and the microhardness is not less than 1000 HV. Ira-Tab-Nic-NbdWherein a, b, c and d represent atomic composition percentage, wherein a is 12 to 47, b is 18 to 48, c is 15 to 38, d is 0.3 to 40, and a + b + c + d is 100.
Specifically, the shapes of the ultrasonic punch 4 and the female die 2 can be circular, and the diameter of the ultrasonic punch 4 is equal to that of the female die 2, so that the ultrasonic action effect is good.
In this embodiment, the master model 2 may be a circular disc with a diameter of 5mm, and the thickness may be 1-3mm (in this embodiment, the thickness of the master model 2 is 2 mm); the diameter of the guide hole 51 can be 5.1mm, and the depth can be 5 mm; the ultrasonic punch 4 may have a diameter of 5 mm.
In the specific application, the amorphous alloy blank 3 is prepared by arc melting and copper mold suction casting. Obtaining a bar material with the amorphous alloy material of phi 5mm by suction casting, and then cutting the bar material into a target blank with the thickness of 2mm by using a slow-moving wire.
After the amorphous alloy blank 3 and the female die 2 are subjected to imprinting forming, the high-temperature high-strength amorphous alloy micromold 31 which can be used for glass die pressing is formed, the micromold takes Ir-based high-temperature amorphous alloy with high glass transition temperature characteristics as a substrate, and a microstructure is quickly constructed on the surface of the micromold by using an ultrasonic imprinting forming method aiming at the problem that the micromold is difficult to process by using a conventional method. As shown in fig. 3, the method comprises the following steps: step S10, fixing the master die 2 having a microstructure on the surface thereof on the positioning seat 5 (the punch base 1) having the guide hole 51; step S20, placing the high-temperature amorphous alloy plate and the master die 2 in the same guide hole 51 and on the master die 2; and step S30, carrying out ultrasonic stamping forming on the assembled high-temperature amorphous alloy plate to obtain a target structure. The invention realizes the cold forming of the high-temperature amorphous alloy material under the assistance of the ultrasonic wave, solves the problem that the high-temperature high-strength amorphous alloy is difficult to process by the traditional machining method, and simultaneously avoids the risk of performance loss caused by crystallization or relaxation in the thermoplastic forming process of the amorphous alloy.
The embodiment of the invention also provides ultrasonic impression forming equipment of the high-temperature high-strength amorphous alloy micro-mould, which comprises a positioning seat 5 capable of being provided with a female mould 2, wherein the female mould 2 is provided with a microstructure surface capable of being opposite to the amorphous alloy blank 3; the ultrasonic stamping forming equipment further comprises an ultrasonic punch 4 which enables the amorphous alloy blank 3 and the micro structure of the female die 2 to generate interaction force to complete stamping forming. The ultrasonic imprint molding apparatus may implement the ultrasonic imprint molding method described above. The ultrasonic imprint forming method may adopt the ultrasonic imprint forming apparatus in this embodiment.
Specifically, the positioning seat 5 has a guide hole 51 for accommodating the female die 2, and the female die 2 has an outer shape matching the guide hole 51.
Specifically, the depth of the guide hole 51 may be greater than the thickness of the master die 2, and during the ultrasonic stamping, the front end of the ultrasonic punch 4 extends into the guide hole 51 to stamp the amorphous alloy blank 3.
Specifically, the ultrasonic punch 4 is connected or provided with an ultrasonic vibration generator with a vibration frequency of 20000 Hz.
Specifically, the ultrasonic punch 4 is connected with or provided with a punching force adjusting component, so that the punching force of the ultrasonic punch 4 can be freely adjusted between 5N and 1000N.
Specifically, an amorphous alloy blank 3 seated on the master die 2 is placed in the guide hole 51, and the diameter of the amorphous alloy blank 3 is equal to or slightly smaller than that of the guide hole 51.
Specifically, the amorphous alloy ingot 3 is placed in the same guide hole 51 as the master model 2 and placed on the master model 2. In the assembling process, one polished surface of the amorphous alloy blank 3 is closely attached to and aligned with one surface of the master die 2 with the microstructure; in the invention, the surface roughness Ra of the stamping surface of the amorphous alloy blank 3 is less than 10nm, and the stamping surface of the amorphous alloy blank 3 is polished by sequentially passing through 800-mesh, 1200-mesh and 2000-mesh sandpaper and diamond polishing paste with the granularity of 0.5 mu m, so that the surface roughness Ra is less than 10 nm.
In specific application, a bushing can be optionally arranged in the guide hole 51, the amorphous alloy blank 3 and the mother die 2 can be arranged in the bushing, and the amorphous alloy blank 3 and the mother die 2 can be matched with the inner diameter of the bushing.
In some embodiments, the amorphous alloy blank 3 and the master mold 2 can also be positioned by a positioning fixture or the like. The positioning clamp can be an adjustable clamp which can clamp or loosen the amorphous alloy blank 3 and the female die 2.
In the specific application, the guiding hole 51 of the positioning seat 5 can be a through hole, the stamping base 1 can be arranged below the positioning seat 5, the positioning seat 5 can be fixedly connected to the stamping base 1, and the bottom of the female die 2 can be seated on the stamping base 1. The positioning seat 5 can adopt a replaceable design so as to meet the production requirements of amorphous alloy micromold 31 with different sizes.
Of course, as an alternative, it is also possible to provide a blind hole as the guide hole 51 in the positioning socket 5 and to dispense with stamping the base 1.
According to the ultrasonic stamping forming method and the forming equipment of the high-temperature high-strength amorphous alloy micro-die, the ultrasonic punch 4 acts on the amorphous alloy blank 3 to extrude the amorphous alloy blank 3 towards the direction of the microstructure of the female die 2, and under the load action of high-frequency ultrasonic vibration of the ultrasonic punch 4, the surface of the high-temperature high-strength amorphous alloy is softened, so that the structure on the female die 2 is copied; that is, the amorphous alloy can be subjected to reciprocating stamping force and micro-vibration, the surface of the amorphous alloy is softened in the process to copy the structure of the surface of the female die 2, so that the stamping forming is completed, the processing process is simple, the processing cost is low, the modes such as thermoplastic forming and the like are not needed, the risk that the performance is reduced because the amorphous alloy is subjected to crystallization or relaxation in the thermoplastic forming process is avoided, and the material performance of the amorphous alloy micro-die 31 is good.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An ultrasonic imprinting forming method of a high-temperature high-strength amorphous alloy micro-mold is characterized by comprising the following steps of:
s1: preparing an amorphous alloy blank and a positioning seat provided with a female die;
s2: arranging the amorphous alloy blank opposite to one surface of the master die with the microstructure;
s3: and generating an interaction force between the amorphous alloy blank and the microstructure of the female die through an ultrasonic punch to finish impression forming.
2. The ultrasonic imprint molding method of the high-temperature high-strength amorphous alloy micro-mold according to claim 1, wherein the step S1 includes the steps of:
s11: preparing a female die and a positioning seat with a guide hole, and matching the shape of the female die with the guide hole;
s12: and placing the master die in the guide hole, wherein the microstructure surface of the master die faces upwards.
3. The ultrasonic imprint molding method of the high-temperature high-strength amorphous alloy micro-mold according to claim 1, wherein the step S2 includes the steps of:
s21: and placing the amorphous alloy blank into the guide hole, and enabling the imprinting molding surface of the amorphous alloy blank to be seated on the microstructure facing the female die.
4. The ultrasonic stamping forming method of the high-temperature high-strength amorphous alloy micromold as in claim 3, wherein the material of the master model is die steel, hard alloy or high-temperature alloy;
and/or the stamping forming surface of the amorphous alloy blank is polished and has the surface roughness Ra less than 10 nm.
5. The method for ultrasonic imprint molding of a high-temperature high-strength amorphous alloy micro-mold according to any one of claims 1 to 4, wherein in step S3, the vibration frequency of the ultrasonic punch is 20000 Hz.
6. The ultrasonic stamping forming method for the high-temperature high-strength amorphous alloy micromold as in any one of claims 1 to 4, wherein the material of the master model is GH4169 high-temperature nickel alloy, and the microstructure of the master model is formed by single-point diamond machining.
7. The method for ultrasonic stamping forming of high-temperature high-strength amorphous alloy micromold in any one of claims 1 to 4, wherein the amorphous alloy blank is Ir-Ta-Ni-Se alloy system and has atomic composition of Ira-Tab-Nic-SedWherein Se is at least one of Ru, Os, Rh, Pd, Pt, Nb, Fe and Co; a. b, c and d represent atomic composition percentage, wherein a is 12-47, b is 18-48, c is 15-38, d is 0.3-40, and a + b + c + d is 100.
8. The ultrasonic imprint forming method of a high-temperature high-strength amorphous alloy micromold as claimed in any one of claims 1 to 4, wherein the composition of the amorphous alloy is Ir-Ni-Ta-Nb.
9. The method for ultrasonic stamping forming of a high-temperature high-strength amorphous alloy micromold as claimed in any one of claims 1 to 4, wherein the ultrasonic punch and the master die are both circular in shape, and the diameter of the ultrasonic punch is equal to that of the master die.
10. The ultrasonic impression forming equipment of the high-temperature high-strength amorphous alloy micro-mold is characterized by comprising a positioning seat capable of mounting a female mold, wherein the female mold is provided with a micro-structure surface capable of being opposite to an amorphous alloy blank;
the ultrasonic stamping forming equipment further comprises an ultrasonic punch which enables the amorphous alloy blank and the micro structure of the female die to generate interaction force to complete stamping forming.
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