CN111733343A - Composite material processing method - Google Patents
Composite material processing method Download PDFInfo
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- CN111733343A CN111733343A CN202010710291.9A CN202010710291A CN111733343A CN 111733343 A CN111733343 A CN 111733343A CN 202010710291 A CN202010710291 A CN 202010710291A CN 111733343 A CN111733343 A CN 111733343A
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- amorphous alloy
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Powder Metallurgy (AREA)
Abstract
The embodiment of the invention discloses a composite material processing method, which is used for solving the technical problem that the existing hard alloy is difficult to process into a complex structure due to high melting point. The embodiment of the invention comprises the following steps: s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material; s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles; s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity; and S4, cooling the mixed material to obtain the composite material.
Description
Technical Field
The invention relates to the technical field of material preparation, in particular to a composite material processing method.
Background
Because the hard metal and the hard alloy have higher hardness and higher melting point, the finished product is generally in a bar or wire form at present, if the hard metal or the hard alloy is required to be processed into a structure with certain shape characteristics, the hard metal or the hard alloy is generally produced by adopting a powder metallurgy method, and the working procedures comprise powder making, compression molding and sintering. The above-mentioned method is complicated, and because the melting point of the hard metal or the hard alloy is high, the hard metal or the hard alloy is difficult to process into a relatively complicated structure, and the hard metal or the hard alloy has high brittleness, and edge breakage is easily caused during CNC processing, so that the feasibility of processing into a complicated shape by a material removing processing method such as CNC is also low.
Therefore, in order to solve the above technical problems, the search for a method for processing a composite material has become an important issue for those skilled in the art.
Disclosure of Invention
The embodiment of the invention discloses a composite material processing method, which is used for solving the technical problem that the existing hard alloy is difficult to process into a complex structure due to high melting point.
The embodiment of the invention provides a composite material processing method, which comprises the following steps:
s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material;
s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles;
s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity;
and S4, cooling the mixed material to obtain the composite material.
Optionally, in step S2, the heating temperature of the mixed material is in a range of 200 ℃ to 600 ℃.
Optionally, the diameter of the hard metal rod ranges from 0.1mm to 10mm, the diameter of the hard alloy rod ranges from 0.1mm to 10mm, and the diameter of the amorphous alloy particles ranges from 1 μm to 10 mm; the volume ratio of the hard metal rod or the hard alloy rod to the amorphous alloy particles ranges from 1:1 to 10: 1.
Optionally, the hard metal rod and the cemented carbide rod have a density greater than 8g/cm3The hardness is more than 500 HV.
Optionally, the hard metal rod comprises one of tungsten, molybdenum, tantalum, nickel, cobalt, niobium;
the hard alloy rod comprises one of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide;
the amorphous alloy particles comprise one of rare earth-based amorphous alloy, copper-based amorphous alloy, zirconium-based amorphous alloy, titanium-based amorphous alloy, nickel-based amorphous alloy and cobalt-based amorphous alloy.
Optionally, the step S3 specifically includes:
the method comprises the steps of enabling amorphous alloy particles to flow in a semi-solid state by means of pressure application, driving a hard metal rod or a hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, applying ultrasonic vibration to a forming part of a mixed material in the cavity, wherein the frequency range of ultrasonic is 10kHHz to 100kHz, when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 0.1mm to 5mm, the ultrasonic with the frequency range of 40kHz to 100kHz is used, and when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 5mm to 10mm, the ultrasonic with the frequency range of 10kHz to 50kHz is used.
Optionally, the step S3 specifically includes:
enabling the amorphous alloy particles to flow in a semi-solid state by means of applying pressure in a segmented mode, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together;
the first stage pressure is F1 force enabling the amorphous alloy particles to flow in a superplastic state, the time for applying the pressure is T1, the second stage pressure is F2 force applied after the amorphous alloy superplastic state is finished, and the time for applying the pressure is T2, wherein F2 is more than 1.2 XF 1, and T2 is more than 0.3 XT 1.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a composite material processing method, which comprises S1, mixing a hard metal rod or a hard alloy rod with amorphous alloy particles in a preset cavity to form a mixed material; s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles; s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity; and S4, cooling the mixed material to obtain the composite material. In the embodiment, the amorphous alloy particles are used as the adhesive, the superplastic deformation characteristics of the amorphous alloy particles are utilized, low-temperature and low-pressure molding is carried out, the hard metal or the hard alloy does not need to be heated to a temperature higher than the melting point of the hard metal or the hard alloy when the hard metal or the hard alloy is molded into a complex part, the amorphous alloy particles only need to flow in a semi-solid state by applying pressure to drive the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, and then the mixed material is cooled to obtain the composite material with a complex structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flow chart of a composite material processing method provided in an embodiment of the present invention.
Detailed Description
The embodiment of the invention discloses a composite material processing method, which is used for solving the technical problem that the existing hard alloy is difficult to process into a complex structure due to high melting point.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a method for processing a composite material provided in the embodiment includes the following steps:
s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material;
s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles;
s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity;
and S4, cooling the mixed material to obtain the composite material.
It should be noted that, in this embodiment, the amorphous alloy in the form of particles may be heated more quickly in the subsequent step, so that the amorphous alloy may reach the temperature range of the supercooled liquid phase region as soon as possible, the pressure applying manner in this embodiment may be implemented by using an external pressure device (for example, a structure in which a cylinder cooperates with a pressure plate), and this embodiment does not limit the pressure providing manner.
In the embodiment, the amorphous alloy particles are used as the adhesive, the superplastic deformation characteristics of the amorphous alloy particles are utilized, low-temperature and low-pressure molding is carried out, the hard metal or the hard alloy does not need to be heated to a temperature higher than the melting point of the hard metal or the hard alloy when the hard metal or the hard alloy is molded into a complex part, the amorphous alloy particles only need to flow in a semi-solid state by applying pressure to drive the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, and then the mixed material is cooled to obtain the composite material with a complex structure.
Further, in the step S2, the heating temperature of the mixed material is set to be 200 ℃ to 600 ℃.
In the above heating temperature range and the temperature range of the supercooled liquid region of the amorphous alloy particles, when the mixed material is heated to 200 to 600 ℃, the amorphous alloy particles are in a semi-solid state.
Further, the diameter of the hard metal rod ranges from 0.1mm to 10mm, the diameter of the hard alloy rod ranges from 0.1mm to 10mm, and the diameter of the amorphous alloy particles ranges from 1 μm to 10 mm; the volume ratio of the hard metal rod or the hard alloy rod to the amorphous alloy particles ranges from 1:1 to 10: 1.
Further, the density of the hard metal and cemented carbide rods is greater than 8g/cm3The hardness is more than 500 HV.
Further, the hard metal rod comprises one of tungsten, molybdenum, tantalum, nickel, cobalt and niobium;
the hard alloy rod comprises one of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide;
the amorphous alloy particles comprise one of rare earth-based amorphous alloy, copper-based amorphous alloy, zirconium-based amorphous alloy, titanium-based amorphous alloy, nickel-based amorphous alloy and cobalt-based amorphous alloy.
It should be noted that the hard metal rod in this embodiment may include other hard metals besides the metals described above, this embodiment is not limited, and similarly, the hard alloy rod in this embodiment may also include other hard alloys, this embodiment is not limited, the amorphous alloy particles in this embodiment may also include other amorphous alloys, and this embodiment is not limited.
Further, the step S3 specifically includes:
the method comprises the steps of enabling amorphous alloy particles to flow in a semi-solid state by means of pressure application, driving a hard metal rod or a hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, applying ultrasonic vibration to a forming part of a mixed material in the cavity, wherein the frequency range of ultrasonic is 10kHHz to 100kHz, when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 0.1mm to 5mm, the ultrasonic with the frequency range of 40kHz to 100kHz is used, and when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 5mm to 10mm, the ultrasonic with the frequency range of 10kHz to 50kHz is used.
When the mixed material is heated and pressurized, ultrasonic oscillation can be performed on a part of the formed mixed material to increase the fluidity of the semi-solid amorphous alloy particles, improve the contact area of the amorphous alloy and the hard metal or the hard alloy, improve the bonding strength of the amorphous alloy and the hard metal or the hard alloy, and improve the distribution uniformity of the hard metal or the hard alloy in the amorphous alloy.
Further, the step S3 specifically includes:
enabling the amorphous alloy particles to flow in a semi-solid state by means of applying pressure in a segmented mode, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together;
the first stage pressure is F1 force enabling the amorphous alloy particles to flow in a superplastic state, the time for applying the pressure is T1, the second stage pressure is F2 force applied after the amorphous alloy superplastic state is finished, and the time for applying the pressure is T2, wherein F2 is more than 1.2 XF 1, and T2 is more than 0.3 XT 1.
It should be noted that, by adopting the above-mentioned way of pressurizing in sections, the gap between the hard metal or the hard alloy and the amorphous alloy can be eliminated, the bonding strength is improved, and the compactness of the product is improved. The first pressure F1 is the force that enables the amorphous alloy to flow in the superplastic state, and the second pressure F2 is the pressure that increases the densification of the composite material after the superplastic state is completed.
While the composite material processing method provided by the present invention has been described in detail, those skilled in the art will appreciate that the various modifications, additions, substitutions, and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (7)
1. A method of processing a composite material, comprising:
s1, placing the hard metal rod or the hard alloy rod and the amorphous alloy particles in a preset cavity for mixing to form a mixed material;
s2, heating the mixed material to the temperature range of the supercooled liquid region of the amorphous alloy particles;
s3, enabling the amorphous alloy particles to flow in a semi-solid state by applying pressure, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of the preset cavity;
and S4, cooling the mixed material to obtain the composite material.
2. The method as claimed in claim 1, wherein the heating temperature of the mixed material in step S2 is in the range of 200 ℃ to 600 ℃.
3. The composite material processing method according to claim 1, wherein the diameter of the hard metal rod is in the range of 0.1mm to 10mm, the diameter of the cemented carbide rod is in the range of 0.1mm to 10mm, and the diameter of the amorphous alloy particles is in the range of 1 μm to 10 mm; the volume ratio of the hard metal rod or the hard alloy rod to the amorphous alloy particles ranges from 1:1 to 10: 1.
4. The composite material processing method according to claim 1, wherein the density of the hard metal rod and the cemented carbide rod is more than 8g/cm3The hardness is more than 500 HV.
5. The composite material processing method of claim 1, wherein the hard metal rod comprises one of tungsten, molybdenum, tantalum, nickel, cobalt, niobium;
the hard alloy rod comprises one of tungsten carbide, titanium carbide, tantalum carbide and niobium carbide;
the amorphous alloy particles comprise one of rare earth-based amorphous alloy, copper-based amorphous alloy, zirconium-based amorphous alloy, titanium-based amorphous alloy, nickel-based amorphous alloy and cobalt-based amorphous alloy.
6. The composite material processing method according to claim 1, wherein the step S3 specifically includes:
the method comprises the steps of enabling amorphous alloy particles to flow in a semi-solid state by means of pressure application, driving a hard metal rod or a hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together, applying ultrasonic vibration to a forming part of a mixed material in the cavity, wherein the frequency range of ultrasonic is 10kHHz to 100kHz, when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 0.1mm to 5mm, the ultrasonic with the frequency range of 40kHz to 100kHz is used, and when the diameter of the amorphous alloy particles, the hard metal rod or the hard alloy rod is 5mm to 10mm, the ultrasonic with the frequency range of 10kHz to 50kHz is used.
7. The composite material processing method according to claim 1, wherein the step S3 specifically includes:
enabling the amorphous alloy particles to flow in a semi-solid state by means of applying pressure in a segmented mode, and driving the hard metal rod or the hard alloy rod mixed with the amorphous alloy particles to deform to the shape of a preset cavity together;
the first stage pressure is F1 force enabling the amorphous alloy particles to flow in a superplastic state, the time for applying the pressure is T1, the second stage pressure is F2 force applied after the amorphous alloy superplastic state is finished, and the time for applying the pressure is T2, wherein F2 is more than 1.2 XF 1, and T2 is more than 0.3 XT 1.
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| CN202010710291.9A CN111733343A (en) | 2020-07-22 | 2020-07-22 | Composite material processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113737111A (en) * | 2021-09-07 | 2021-12-03 | 东莞市无疆科技投资有限公司 | High-density amorphous composite material and preparation method thereof |
| CN114457247A (en) * | 2021-12-23 | 2022-05-10 | 广东工业大学 | Preparation method of amorphous alloy composite material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113737111A (en) * | 2021-09-07 | 2021-12-03 | 东莞市无疆科技投资有限公司 | High-density amorphous composite material and preparation method thereof |
| CN114457247A (en) * | 2021-12-23 | 2022-05-10 | 广东工业大学 | Preparation method of amorphous alloy composite material |
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