CN111112569B - Processing technology of metal-based ceramic composite material part - Google Patents
Processing technology of metal-based ceramic composite material part Download PDFInfo
- Publication number
- CN111112569B CN111112569B CN201911394055.4A CN201911394055A CN111112569B CN 111112569 B CN111112569 B CN 111112569B CN 201911394055 A CN201911394055 A CN 201911394055A CN 111112569 B CN111112569 B CN 111112569B
- Authority
- CN
- China
- Prior art keywords
- ceramic
- metal
- blank
- preform
- ceramic composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Abstract
The invention belongs to the field of material processing, and discloses a processing technology of a metal matrix ceramic composite part, which comprises the following steps: preparing a ceramic preform, sintering, processing a rough blank of the ceramic preform, preparing a metal matrix ceramic composite casting blank, machining and carrying out heat treatment. Compared with the prior art, the technical scheme of the invention can greatly reduce the molding and processing difficulty of the metal matrix ceramic composite material precision part, reduce the processing cost and shorten the production period.
Description
Technical Field
The invention belongs to the field of material processing, and particularly relates to a processing technology of a metal matrix ceramic composite part.
Background
Metal matrix ceramic composites, such as aluminum matrix ceramic composites, are currently being used in increasingly broad applications in the aerospace, marine, weaponry, nuclear industries, and other fields. At present, when complex precision parts (such as an inertial platform navigation table body, a liquid floating gyroscope buoy, a liquid floating gyroscope frame, a fiber optic gyroscope base and the like) are prepared from aluminum-based ceramic composite materials, a manufacturing method for directly processing and molding the massive aluminum-based ceramic composite materials is mainly adopted, a complex mold needs to be designed, the problems of long mold structure design and mold opening period, difficulty in molding, long production period, high processing cost and the like exist, batch production is difficult to realize, and application and popularization of the materials in precision parts are limited.
In addition, in the prior art, the ceramic preform is processed to the characteristic dimension of the required part and then sintered, but the ceramic preform often has the problems of cracking, deformation, incomplete sintering and the like, and is not beneficial to subsequent further processing. Because the sintered ceramic preform may have insufficient or too high strength due to different sintering processes, the insufficient or too high strength of the ceramic preform is not beneficial to the later compounding of the ceramic preform with other materials (for example, compounding with metal aluminum), and the preform formula and sintering process with reasonable design are needed to solve the problem. The preparation of ceramic prefabricated body with no defect and moderate strength needs to formulate reasonable formula and sintering process according to the volume size, structure complexity and volume fraction of the ceramic prefabricated body.
Therefore, there is a need to provide a new process for fabricating metal matrix ceramic composite parts, which includes the process of preparing ceramic preforms, and which produces ceramic preforms free of defects and having moderate strength.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a processing technology of a metal matrix ceramic composite material part. The process comprises the steps of firstly, performing preform molding on a ceramic raw material, then sintering, compounding with a metal matrix and performing finish machining. The processing and forming difficulty of the metal-based ceramic composite material is greatly reduced, the processing amount of the compounded metal-based ceramic composite material in the later period can be obviously reduced, and the simplification of the manufacturing process of processing the metal-based ceramic composite material into complex precision parts (such as an inertial platform navigation table body, a liquid floating gyroscope buoy, a liquid floating gyroscope frame, a fiber optic gyroscope base and the like) and the improvement of the mass production capacity are realized.
A processing technology of a metal matrix ceramic composite part comprises the following steps:
(1) preparing a ceramic preform: the grain size group of the ceramic raw material comprises 0.1-1.5 mu m 4-12 parts, 4-11 mu m 15-30 parts and 15-30 mu m 55-75 parts by weight; then adding the ceramic raw material into a high-energy mixer (supplied by reinqi mechanical limited of york hong) with the model number of VH-50, stirring at the speed of 40-180 r/min (preferably 60-120 r/min) for 10-30 min, and then adding into a mold (the mold is a mold commonly used in the field) to prepare a ceramic preform;
(2) and (3) sintering: heating the ceramic preform prepared in the step (1) to 900-1300 ℃ at a heating rate of 50-55 ℃/h, preserving the heat for 10-20h, and then cooling to room temperature at a cooling rate of 45-55 ℃/h to prepare a ceramic preform rough blank;
(3) processing a ceramic preform rough blank: grinding the ceramic preform rough blank prepared in the step (2) by adopting a five-axis linkage numerical control machine tool (the model is JDHGT600 provided by Beijing Fine engraving technology group Co., Ltd.) to prepare a ceramic preform finish-machined blank;
(4) preparing a metal matrix ceramic composite casting blank: placing the ceramic preform finish-machining blank prepared in the step (3) into a pressure composite die (the composite die is a composite die commonly used in the field), and compounding the ceramic preform finish-machining blank with metal (preferably, the metal is in a molten state (namely liquid state) at the conditions of the vacuum degree of 480-520Pa (preferably 500Pa), the composite pressure of 15-30MPa (preferably 20-25MPa) and the temperature of 700-900 ℃ (preferably at the temperature of 750 ℃) to prepare a metal-based ceramic composite material casting blank;
(5) and (3) machining: mechanically polishing the metal-based ceramic composite casting blank prepared in the step (4) to prepare a metal-based ceramic composite part primary body;
(6) and (3) heat treatment: and (3) roughly processing the primary body of the metal-based ceramic composite material part prepared in the step (5) (for example, grinding the part by adopting the tool setting of a five-axis linkage numerical control machine tool of 0.18-0.22mm, the rotating speed of 1800 plus one minute and 2200 rpm and the feeding speed of 100 mm/min), and then carrying out heat treatment to prepare the metal-based ceramic composite material part.
The mold in the step (1) is designed according to the size of the part to be prepared, for example, according to the size of the part such as the inertial platform navigation table body, the liquid floating gyroscope buoy, the liquid floating gyroscope frame, the optical fiber gyroscope base and the like.
Preferably, in the step (1), the grain size group of the ceramic raw material is 0.8-1.2 μm 5-10 parts, 5-10 μm 20-30 parts, 15-30 μm 60-75 parts by weight;
preferably, the ceramic raw material in the step (1) is SiC or Al2O3Or B4C, ceramic.
Preferably, the temperature increase and decrease in the step (2) are performed at a rate of 52 ℃/hr.
And (4) processing the rough ceramic preform in the step (3) to obtain a finished ceramic preform blank, so that the processing amount of the composite casting after the ceramic preform is compounded with metal is reduced, and the overall processing difficulty is reduced.
Preferably, the cutting amount of the five-axis linkage numerical control machine tool in the grinding process in the step (3) is 0.18-0.22mm (preferably 0.20mm), the rotating speed is 1800 and 2200 revolutions per minute (preferably 2000 revolutions per minute), and the feeding rate is 100 mm/min.
Preferably, the metal in step (4) is aluminum.
Preferably, the inert gas in step (4) is argon or nitrogen.
The specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite part to 530-550 ℃ (preferably 535 ℃) at a heating rate of 50-100 ℃/h, preserving the heat for 4.5-5.5 hours, quenching the initial body in water bath and cooling the initial body to room temperature, then heating the initial body to 180-190 ℃ at a heating rate of 10-50 ℃/h, preserving the heat for 2.5-3.5 hours (preferably 3 hours), and naturally cooling the initial body to room temperature in the air to obtain the metal-based ceramic composite part.
The preparation step (6) may be further followed by a finishing step according to the requirement of the dimensional accuracy of the component (the finishing step is a finishing step commonly used by those skilled in the art, in order to make the dimensional accuracy of the component more accurate).
The application of the metal-based ceramic composite material in the step (6) is to use the metal-based ceramic composite material part in the preparation of one or more of an inertial platform navigation table body, a liquid floating gyroscope buoy, a liquid floating gyroscope frame or a fiber optic gyroscope base.
The ceramic raw materials in the step (1) are composed of different particle sizes according to a specific proportion, and the temperature and time involved in the sintering process of the ceramic preform in the step (2) are favorable for the forming and sintering process of the ceramic preform, well prevent the ceramic preform from cracking, deforming, burning-out and the like, and are also favorable for the subsequent compounding process of the ceramic preform and a metal base.
Compared with the prior art, the invention has the following beneficial effects:
in order to solve the difficulty in the process of preparing the complex precise parts by using the metal matrix ceramic composite material (such as the aluminum matrix ceramic composite material) at present, the ceramic preform forming method is adopted, the structure forming process of the complex precise parts of the metal matrix ceramic composite material is transferred to the stages of ceramic preform forming and ceramic preform processing, the forming difficulty of the complex structure is greatly reduced, the processing amount of the complex metal matrix ceramic composite material parts at the later stage can be obviously reduced, and the simplification of the manufacturing process of the complex precise parts of the metal matrix ceramic composite material and the improvement of the mass production capacity are realized.
Compared with the traditional manufacturing method of the metal matrix ceramic composite material precision part, the ceramic preform forming method can greatly reduce the forming and processing difficulty of the metal matrix ceramic composite material precision part, reduce a large amount of consumption of a cutter in the processing process and shorten the processing period of the metal matrix ceramic composite material precision part. In addition, the ceramic prefabricated body is processed, so that the requirement on a die is reduced, the yield of the ceramic prefabricated body is improved, and the method is very suitable for small-batch and rapid production of complex and precise parts of metal matrix ceramic composite materials.
The ceramic preform prepared by the invention has no problems of cracking, deformation, burning-proof and the like, and is beneficial to compounding the ceramic preform and metal.
Drawings
Fig. 1 is a flow chart of a processing process of a metal matrix ceramic composite part according to embodiment 1 of the present invention.
Detailed Description
In order to make the technical solution more obvious to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
Example 1
A processing technology of a metal matrix ceramic composite part comprises the following steps:
(1) preparing a ceramic preform: the grain size group of the ceramic raw material comprises 1 mu m 8 parts, 5 mu m 25 parts and 15 mu m 67 parts by weight; then adding the ceramic raw material into a high-energy mixer (provided by Zhang hong Kong Rui Qi mechanical Co., Ltd., model number VH-50) and stirring at the speed of 40 r/min for 10 min, and then adding into a mould to prepare a ceramic preform;
(2) and (3) sintering: heating the ceramic preform prepared in the step (1) to 900 ℃ at a heating rate of 50 ℃/h, preserving heat for 20h, and then cooling to room temperature at a cooling rate of 45 ℃/h to prepare a ceramic preform rough blank;
(3) processing a ceramic preform rough blank: grinding the ceramic preform rough blank prepared in the step (2) by adopting a five-axis linkage numerical control machine tool (the model is JDHGT600 provided by Beijing Fine engraving technology group Co., Ltd.) to prepare a ceramic preform finish-machined blank;
(4) preparing a metal matrix ceramic composite casting blank: placing the ceramic preform finish-machined blank prepared in the step (3) into a pressure composite die, and compounding the ceramic preform finish-machined blank with metal under the conditions of inert gas protection, vacuum degree of 480Pa, composite pressure of 15MPa and 750 ℃ to prepare a metal-based ceramic composite casting blank;
(5) and (3) machining: mechanically polishing the metal-based ceramic composite casting blank prepared in the step (4) to prepare a metal-based ceramic composite part primary body;
(6) and (3) heat treatment: and (4) carrying out heat treatment on the primary body of the metal-based ceramic composite material part prepared in the step (5) to prepare the metal-based ceramic composite material part.
And (2) designing the die in the step (1) according to the size of a part to be prepared, wherein the part is an inertial platform navigation table body.
The ceramic raw material in the step (1) is SiC.
And (4) processing the rough ceramic preform in the step (3) to obtain a finished ceramic preform blank, so that the processing amount of the composite casting after the ceramic preform is compounded with metal is reduced, and the overall processing difficulty is reduced.
In the grinding process in the step (3), the cutting depth of the five-axis linkage numerical control machine tool is 0.20mm, the rotating speed is 2000 rpm, and the feeding speed is 100 mm/min.
The metal in the step (4) is aluminum.
And (4) the inert gas is argon.
The specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite material part to 530 ℃ at the heating rate of 50 ℃/h, preserving heat for 5.5 hours, quenching and cooling to room temperature through water bath, heating to 185 ℃ at the heating rate of 10 ℃/h, preserving heat for 3 hours, and naturally cooling to room temperature in the air to obtain the metal-based ceramic composite material part.
The processing technique of example 1 is as shown in fig. 1, and the product is finally prepared through ceramic preform preparation, sintering, ceramic preform rough blank processing, metal matrix ceramic composite material casting blank preparation, mechanical processing and heat treatment. Since the mold in the step (1) is designed according to the general structure of the inertial platform navigation platform body (the dimensions of the inertial platform navigation platform body, such as length, width and height, are the dimensions of the inertial platform navigation platform body conventional in the art), the prepared product is also a precise part of the inertial platform navigation platform body.
Example 2
A processing technology of a metal matrix ceramic composite material comprises the following steps:
(1) preparing a ceramic preform: the grain size group of the ceramic raw material comprises 1 mu m 10 parts, 10 mu m 18 parts, 20 mu m 10 parts and 30 mu m 62 parts by weight; then adding the ceramic raw material into a high-energy mixer (provided by Zhang hong Kong Rui Qi mechanical Co., Ltd., model number VH-50) and stirring at the speed of 120 r/min for 30 min, and then adding into a mould to prepare a ceramic preform;
(2) and (3) sintering: heating the ceramic preform prepared in the step (1) to 1300 ℃ at a heating rate of 55 ℃/h, preserving the heat for 10h, and then cooling to room temperature at a cooling rate of 52 ℃/h to prepare a ceramic preform rough blank;
(3) processing a ceramic preform rough blank: grinding the ceramic preform rough blank prepared in the step (2) by adopting a five-axis linkage numerical control machine tool (the model is JDHGT600 provided by Beijing Fine engraving technology group Co., Ltd.) to prepare a ceramic preform finish-machined blank;
(4) preparing a metal matrix ceramic composite casting blank: placing the ceramic preform finish-machined blank prepared in the step (3) into a pressure composite die, and compounding the ceramic preform finish-machined blank with metal under the conditions of inert gas protection, the vacuum degree of 520Pa, the composite pressure of 30MPa and the temperature of 800 ℃ to prepare a metal-based ceramic composite casting blank;
(5) and (3) machining: mechanically polishing the metal-based ceramic composite casting blank prepared in the step (4) to prepare a metal-based ceramic composite part primary body;
(6) and (3) heat treatment: and (4) carrying out heat treatment on the primary body of the metal-based ceramic composite material part prepared in the step (5) to prepare the metal-based ceramic composite material part.
The mould in the step (1) is designed according to the size of a part to be prepared, and the part is a fiber optic gyroscope base.
The ceramic raw material in the step (1) is SiC.
And (4) processing the rough ceramic preform in the step (3) to obtain a finished ceramic preform blank, so that the processing amount of the composite casting after the ceramic preform is compounded with metal is reduced, and the overall processing difficulty is reduced.
In the grinding process in the step (3), the cutting feed of the five-axis linkage numerical control machine tool is 0.22mm, the rotating speed is 1800 rpm, and the feeding speed is 100 mm/min.
The metal in the step (4) is aluminum alloy.
And (4) taking helium as the inert gas.
The specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite material part to 535 ℃ at a heating rate of 80 ℃/h, preserving heat for 5 hours, quenching and cooling to room temperature through water bath, heating to 185 ℃ at a heating rate of 40 ℃/h, preserving heat for 3 hours, and naturally cooling to room temperature in the air to obtain the metal-based ceramic composite material part.
Example 3
A processing technology of a metal matrix ceramic composite part comprises the following steps:
(1) preparing a ceramic preform: the grain size group of the ceramic raw material is 0.1 mu m 4 part, 4 mu m 15 part and 15 mu m 55 part by weight; then adding the ceramic raw material into a high-energy mixer (supplied by Zhang hong Kong Rui Qi mechanical Co., Ltd., model number VH-50) and stirring at the speed of 60 r/min for 10-30 min, and then adding into a mould to prepare a ceramic preform;
(2) and (3) sintering: heating the ceramic preform prepared in the step (1) to 900-1300 ℃ at a heating rate of 50-55 ℃/h, preserving the heat for 10-20h, and then cooling to room temperature at a cooling rate of 45-55 ℃/h to prepare a ceramic preform rough blank;
(3) processing a ceramic preform rough blank: grinding the ceramic preform rough blank prepared in the step (2) by adopting a five-axis linkage numerical control machine tool (the model is JDHGT600 provided by Beijing Fine engraving technology group Co., Ltd.) to prepare a ceramic preform finish-machined blank;
(4) preparing a metal matrix ceramic composite casting blank: placing the ceramic preform finish-machined blank prepared in the step (3) into a pressure composite die, and compounding the ceramic preform finish-machined blank with metal under the conditions of inert gas protection, vacuum degree of 480-520Pa, composite pressure of 15-30MPa and temperature of 750 ℃ to obtain a metal-based ceramic composite material casting blank;
(5) and (3) machining: mechanically polishing the metal-based ceramic composite casting blank prepared in the step (4) to prepare a metal-based ceramic composite part primary body;
(6) and (3) heat treatment: and (4) carrying out heat treatment on the primary body of the metal-based ceramic composite material part prepared in the step (5) to prepare the metal-based ceramic composite material part.
And (2) designing the mould in the step (1) according to the size of a part to be prepared, wherein the part is a liquid floating gyroscope frame.
The ceramic raw material in the step (1) is Al2O3。
And (4) processing the rough ceramic preform in the step (3) to obtain a finished ceramic preform blank, so that the processing amount of the composite casting after the ceramic preform is compounded with metal is reduced, and the overall processing difficulty is reduced.
In the grinding process in the step (3), the cutting feed of the five-axis linkage numerical control machine tool is 0.18mm, the rotating speed is 1800 rpm, and the feed rate is 100 mm/min.
The metal in the step (4) is aluminum.
And (4) the inert gas is argon.
The specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite material part to 530 ℃ at the heating rate of 500 ℃/h, preserving heat for 5.5 hours, quenching and cooling to room temperature through water bath, heating to 180 ℃ at the heating rate of 10 ℃/h, preserving heat for 2.5 hours, and naturally cooling to room temperature in the air to obtain the metal-based ceramic composite material part.
Example 4
A processing technology of a metal matrix ceramic composite part comprises the following steps:
(1) preparing a ceramic preform: the grain size group of the ceramic raw material is 1.5 mu m 12 parts, 10 mu m 30 parts and 30 mu m 58 parts by weight; then adding the ceramic raw material into a high-energy mixer (provided by Zhang hong Kong Rui Qi mechanical Co., Ltd., model number VH-50) and stirring at the speed of 180 r/min for 30 min, and then adding into a mould to prepare a ceramic preform;
(2) and (3) sintering: heating the ceramic preform prepared in the step (1) to 1300 ℃ at a heating rate of 55 ℃/h, preserving heat for 10h, and then cooling to room temperature at a cooling rate of 55 ℃/h to prepare a ceramic preform rough blank;
(3) processing a ceramic preform rough blank: grinding the ceramic preform rough blank prepared in the step (2) by adopting a five-axis linkage numerical control machine tool (the model is JDHGT600 provided by Beijing Fine engraving technology group Co., Ltd.) to prepare a ceramic preform finish-machined blank;
(4) preparing a metal matrix ceramic composite casting blank: placing the ceramic preform finish-machined blank prepared in the step (3) into a pressure composite die, and compounding the ceramic preform finish-machined blank with metal under the conditions of inert gas protection, vacuum degree of 500Pa, composite pressure of 30MPa and temperature of 850 ℃ to prepare a metal-based ceramic composite casting blank;
(5) and (3) machining: mechanically polishing the metal-based ceramic composite casting blank prepared in the step (4) to prepare a metal-based ceramic composite part primary body;
(6) and (3) heat treatment: and (4) carrying out heat treatment on the primary body of the metal-based ceramic composite material part prepared in the step (5) to prepare the metal-based ceramic composite material part.
And (2) designing the mould in the step (1) according to the size of the part to be prepared, wherein the part is the optical fiber gyroscope base.
The ceramic raw material in the step (1) is SiC.
In the step (2), the temperature is raised and lowered at a speed of 52 ℃/hour.
And (4) processing the rough ceramic preform in the step (3) to obtain a finished ceramic preform blank, so that the processing amount of the composite casting after the ceramic preform is compounded with metal is reduced, and the overall processing difficulty is reduced.
In the grinding process in the step (3), the cutting depth of the five-axis linkage numerical control machine tool is 0.22mm, the rotating speed is 2200 revolutions per minute, and the feeding speed is 100mm per minute.
The metal in the step (4) is aluminum.
And (4) the inert gas in the step (4) is nitrogen.
The specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite material part to 550 ℃ at the heating rate of 90 ℃/h, preserving heat for 5.5 hours, quenching and cooling to room temperature through water bath, heating to 190 ℃ at the heating rate of 50 ℃/h, preserving heat for 3.5 hours, and naturally cooling to room temperature in the air to obtain the metal-based ceramic composite material part.
Comparative example 1
In comparison with example 1, in step (1) of comparative example 1, the grain size groups of the ceramic starting materials were 2 μm 15 parts, 17 μm 30 parts, and 40 μm 55 parts by weight, and the rest of the preparation process was the same as example 1.
Comparative example 2
Compared with the example 2, the step (2) in the comparative example 2 heats the ceramic preform prepared in the step (1) to 800 ℃ at the heating rate of 40 ℃/h, keeps the temperature for 25 h, and then cools to room temperature at the cooling rate of 55 ℃/h to prepare a ceramic preform rough blank, and the rest preparation processes are the same as the example 2.
Comparative example 3
Compared with the example 3, the vacuum degree in the step (4) in the comparative example 3 is 450Pa, the composite pressure is 12MPa, the temperature is 700 ℃, and the specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite part to 500 ℃ at the heating rate of 40 ℃/h, preserving heat for 5.5 hours, quenching and cooling to room temperature through water bath, heating to 200 ℃ at the heating rate of 50 ℃/h, preserving heat for 3.5 hours, and naturally cooling to room temperature in the air to obtain the metal-based ceramic composite part, wherein the rest preparation processes are the same as those in the embodiment 3.
Product effectiveness testing
The ceramic preforms prepared in examples 1 to 4 did not suffer from cracking, deformation, and burn-through. The ceramic preforms prepared in comparative examples 1-2 exhibited cracking and deformation problems in various degrees. The ceramic preforms prepared in examples 1 to 4 had compressive strengths of 8 to 12MPa and moderate mechanical strengths, and the metal matrix ceramic composite materials prepared in comparative examples 1 to 2 had compressive strengths of 5MPa and too low mechanical strengths, which were not favorable for subsequent processing. It can be seen that steps (1) and (2) affect cracking, deformation and mechanical strength problems of the ceramic preform. The compressive strength of the metal matrix ceramic composite materials prepared in examples 1 to 4 was 20 to 30MPa, and the compressive strength of the metal matrix ceramic composite material prepared in comparative example 3 was 10 MPa. It can be seen that step (6) affects the mechanical strength of the product produced. In addition, the metal matrix ceramic composite material part can be used for preparing an inertial platform navigation table body, a liquid floating gyroscope floating barrel, a liquid floating gyroscope frame or a fiber optic gyroscope base.
Claims (5)
1. The machining process of the metal matrix ceramic composite part is characterized by comprising the following steps of:
(1) preparing a ceramic preform: the grain size group of the ceramic raw material comprises 0.1-1.5 mu m 4-12 parts, 4-11 mu m 15-30 parts and 15-30 mu m 55-75 parts by weight; then mixing the ceramic raw materials, and adding the mixture into a mold to prepare a ceramic preform;
(2) and (3) sintering: heating the ceramic preform prepared in the step (1) to 900-1300 ℃, preserving heat, and then cooling to room temperature to prepare a ceramic preform rough blank;
(3) processing a ceramic preform rough blank: grinding the rough ceramic preform obtained in the step (2) to obtain a fine-machined ceramic preform blank;
(4) preparing a metal matrix ceramic composite casting blank: placing the ceramic preform finish-machined blank prepared in the step (3) into a pressure composite die, and compounding the ceramic preform finish-machined blank with liquid metal to prepare a metal-based ceramic composite casting blank;
(5) and (3) machining: mechanically polishing the metal-based ceramic composite casting blank prepared in the step (4) to prepare a metal-based ceramic composite part primary body;
(6) and (3) heat treatment: carrying out heat treatment on the primary body of the metal-based ceramic composite material part prepared in the step (5) to prepare the metal-based ceramic composite material part;
in the step (2), the temperature rising speed is 50-55 ℃/h, the heat preservation time is 10-20h, and the temperature reduction speed is 45-55 ℃/h;
placing the ceramic preform finish machining blank in the step (4) into a pressure composite die, and compounding the ceramic preform finish machining blank with liquid metal under the conditions that the vacuum degree is 480-plus-one 520Pa, the composite pressure is 15-30MPa and the temperature is 700-plus-one 900 ℃ under the protection of inert gas;
the specific process of the heat treatment in the step (6) is as follows: heating the initial body of the metal-based ceramic composite part to 530 ℃ and 550 ℃ at a heating rate of 50-100 ℃/h, preserving the heat for 4.5-5.5 h, quenching and cooling to room temperature in water bath, heating to 180 ℃ and 190 ℃ at a heating rate of 10-50 ℃/h, preserving the heat for 2.5-3.5 h, and naturally cooling to room temperature in the air to obtain the metal-based ceramic composite part.
2. The process according to claim 1, wherein in the step (1), the ceramic starting material has a particle size group of 0.8 to 1.2 μm 5 to 10 parts, 5 to 10 μm 20 to 30 parts, and 15 to 30 μm 60 to 75 parts by weight.
3. The process according to claim 1, wherein the mixing in step (1) is carried out by stirring with a high energy mixer at 40-180 rpm for 10-30 minutes; the ceramic raw materials are SiC and Al2O3Or B4C, ceramic.
4. The machining process according to claim 1, wherein the grinding process in the step (3) and the mechanical grinding process in the step (5) are five-axis linkage numerical control machines, the tool setting of the five-axis linkage numerical control machines is 0.18-0.22mm, the rotating speed is 1800-2200 rpm, and the feeding rate is 100 mm/min.
5. The process of claim 1, wherein the metal in step (4) is aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394055.4A CN111112569B (en) | 2019-12-30 | 2019-12-30 | Processing technology of metal-based ceramic composite material part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911394055.4A CN111112569B (en) | 2019-12-30 | 2019-12-30 | Processing technology of metal-based ceramic composite material part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111112569A CN111112569A (en) | 2020-05-08 |
| CN111112569B true CN111112569B (en) | 2021-03-30 |
Family
ID=70504965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911394055.4A Active CN111112569B (en) | 2019-12-30 | 2019-12-30 | Processing technology of metal-based ceramic composite material part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111112569B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113649772B (en) * | 2021-08-17 | 2022-06-24 | 江苏三条鱼新材料科技有限公司 | Production process of high-temperature structural ceramic/metal composite pipe for aluminum alloy die casting machine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007903A1 (en) * | 1987-04-09 | 1988-10-20 | Ceramic Process Systems Corporation | Complex ceramic and metallic shapes by low pressure forming and sublimative drying |
| CN101602105B (en) * | 2009-07-07 | 2010-12-08 | 吉林大学 | Metal-based powder metallurgy brake lining material and preparation methods thereof |
| CN101618617B (en) * | 2009-08-03 | 2012-10-03 | 李新桥 | Metal/ceramic three-layer composite material and preparation method thereof |
| CN103667849B (en) * | 2012-09-24 | 2016-03-30 | 中国兵器科学研究院宁波分院 | A kind of metal matrix ceramic composites and manufacture method thereof and application |
| CN102912340A (en) * | 2012-10-15 | 2013-02-06 | 秦皇岛格瑞得节能技术服务有限公司 | Preparation method for high temperature impact wear resistant gradient composite material |
| CN103203448B (en) * | 2013-02-20 | 2015-02-11 | 邓金刚 | Method for manufacturing metal matrix ceramic composite part |
| CN103736549B (en) * | 2014-01-02 | 2015-07-01 | 洛阳鹏飞耐磨材料股份有限公司 | Preparation method for metal-based ceramic composite material grinding roller of vertical grinding machine |
| CN103753409B (en) * | 2014-01-02 | 2016-04-06 | 洛阳鹏飞耐磨材料股份有限公司 | A kind of preparation method of vertical mill metal matrix ceramic composites mill |
| CN107287463A (en) * | 2016-03-30 | 2017-10-24 | 西安法迪复合材料有限公司 | A kind of metal matrix ceramic composites |
| CN107353008B (en) * | 2017-06-20 | 2020-03-17 | 西安交通大学 | Preparation method of layered metal-ceramic composite material part |
| CN108080629B (en) * | 2017-10-31 | 2020-06-09 | 西安铂力特增材技术股份有限公司 | Forming method of metal-based carbon nanotube composite material part |
-
2019
- 2019-12-30 CN CN201911394055.4A patent/CN111112569B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111112569A (en) | 2020-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109734425B (en) | Laser selective rapid forming method of complex phase ceramic casting mold and product thereof | |
| CN105481364B (en) | The preparation method of ceramic watchcase | |
| CN109848419B (en) | Method for preparing nickel-based high-temperature alloy complex part by adopting powder injection molding | |
| CN110330345B (en) | Silicon nitride ceramic material, preparation method thereof and ceramic mold | |
| CN107640963B (en) | Preparation method of gradient ceramic core material | |
| US20200276634A1 (en) | Method for producing a ceramic core for the production of a casting having hollow structures and a ceramic core | |
| CN111347048A (en) | Low-cost titanium alloy indirect additive manufacturing method | |
| CN109277574B (en) | Preparation method of air-conditioning compressor rocker | |
| CN103553632B (en) | A kind of preparation method of dense silicon nitride ceramic material | |
| KR100888766B1 (en) | Process for producing silica glass product | |
| CN109551353B (en) | Polishing grinding rod and polishing process thereof | |
| CN103586296A (en) | Mosaic ceramic drawing die and making method thereof | |
| CN104550956A (en) | Component preparation method through beta-gamma titanium-aluminum alloy prealloy powder spark plasma sintering | |
| CN111112569B (en) | Processing technology of metal-based ceramic composite material part | |
| CN103203448B (en) | Method for manufacturing metal matrix ceramic composite part | |
| CN112390633A (en) | ZrB2Nano powder reinforced silica-based ceramic core and preparation method thereof | |
| Shi et al. | Additive manufacturing and foundry innovation | |
| CN114293159B (en) | Preparation method of nickel-based alloy target | |
| CN113930635B (en) | Stainless steel reinforced aluminum silicon carbide composite material and preparation method thereof | |
| CN105880605B (en) | A kind of big specification hard alloy valve ball production technologies of φ more than 80 | |
| CN111036875B (en) | Solid rocket engine blanking cover and preparation method thereof | |
| CN111958762A (en) | Method for manufacturing ceramic body by using ceramic waste | |
| CN114085084A (en) | High-strength silicon nitride ceramic and preparation method thereof | |
| CN104551571B (en) | Method for producing members through near-isothermal stamping by aid of TiAl pre-alloy powder | |
| CN115044842B (en) | Production system for preparing high-specific-stiffness aluminum silicon carbide structural member |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221128 Granted publication date: 20210330 |
|
| PP01 | Preservation of patent right |