CN117604301A - Preparation method of elastic refrigeration alloy - Google Patents
Preparation method of elastic refrigeration alloy Download PDFInfo
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- CN117604301A CN117604301A CN202311582572.0A CN202311582572A CN117604301A CN 117604301 A CN117604301 A CN 117604301A CN 202311582572 A CN202311582572 A CN 202311582572A CN 117604301 A CN117604301 A CN 117604301A
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- 239000000956 alloy Substances 0.000 title claims abstract description 55
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 52
- 238000005057 refrigeration Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000000227 grinding Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 13
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims abstract description 4
- 238000007731 hot pressing Methods 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000007723 die pressing method Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000000498 ball milling Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000013078 crystal Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 230000007847 structural defect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
- C22C1/0425—Copper-based alloys
-
- 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
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
-
- 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
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a preparation method of an elastic refrigeration alloy, which comprises the following components in parts by mass: 80 to 88 portions of Cu powder with the Fisher particle size of 26 to 30um, 10 to 17 portions of Zn powder, 0.7 to 1.0 portion of Ni powder and 0.2 to 1.0 portion of Fe powder; the elastic refrigeration alloy comprises the following process steps: (1) selecting each material component; (2) Ball milling Ni powder, fe powder and Zn powder in a planetary ball mill by taking hexane as a grinding medium; (3) adding Cu to grind to form slurry; (4) filtering and drying to prepare mixed material particles; (5) Hot-pressing at 80-120 deg.c with a press to form alloy blank; and (6) sintering and molding the alloy blank in an argon environment. The elastic refrigeration alloy prepared by the invention has good strength, wear resistance, corrosion resistance and elastic refrigeration performance.
Description
Technical field:
the invention relates to the technical field of elastic refrigeration alloy material manufacturing, in particular to a preparation method of an elastic refrigeration alloy.
The background technology is as follows:
with the intelligent development of high-end equipment, the requirements on components are gradually changed from mechanical properties, functional properties to intelligent properties. The intelligent component has wide application prospect in the fields of aerospace, biomedical treatment, automobile engineering and the like, has the characteristics of light weight, complexity and refinement, and the intelligent component often needs to use novel elastic refrigeration alloy as a material.
Elastic refrigeration alloy means that the symmetry of the crystal structure of the material can be changed by applying and removing an external stress field to cause the martensitic transformation and the martensitic reverse transformation of the material so as to achieve the purposes of heat release and heat absorption. Copper-based elastic refrigeration alloy is one of the elastic refrigeration alloys widely used at present. The copper-based elastic refrigeration alloy has the advantages of high heat conductivity coefficient, high heat storage density, stable performance and the like, and becomes a hot point for research in academic and industrial circles, so that a new idea is provided for solving the problems of energy and environment. However, the copper-based elastic refrigeration alloy prepared by the traditional method has a series of problems of poor plastic property, poor processability, easy brittle fracture, martensite stabilization and the like, and limits the application and development of the copper-based elastic refrigeration alloy.
Therefore, it is necessary to provide a preparation method of the novel elastic refrigeration alloy material.
The invention comprises the following steps:
the invention aims to provide a preparation method of an elastic refrigeration alloy, which aims to overcome the current situation that the existing common alloy material cannot meet the application conditions.
The preparation method of the elastic refrigeration alloy provided by the invention can be used for effectively preparing the copper-based elastic refrigeration alloy with good elastic refrigeration performance, and providing raw materials for intelligent components required in various fields.
In order to solve the technical problems, the invention adopts the following technical scheme: the elastic refrigeration alloy is prepared by mixing, granulating and sintering the following raw materials; the weight parts of the components in the raw materials are as follows, based on the total weight: 80 to 88 portions of Cu powder with the Fisher particle size of 26 to 30um, 10 to 17 portions of Zn powder with the Fisher particle size of 20 to 26um, 0.7 to 1.0 portion of Ni powder and 0.2 to 1.0 portion of Fe powder;
the preparation method of the elastic refrigeration alloy comprises the following process steps:
(1) Selecting the components of the materials according to the material formula;
(2) 1Kg of planetary ball mill is selected, ni powder, fe powder and Zn powder are firstly added, hexane is added as grinding medium according to the proportion of 400ml/Kg, and the mixture is prepared according to the ball-material ratio of 5:1 adding grinding balls, stirring and grinding, wherein the diameter D7 of the grinding balls, the stirring speed of a ball mill is 480rpm, the filling coefficient is 0.65, and grinding is carried out for 1 hour;
(3) Then adding Cu and grinding for 3 hours to form slurry;
(4) Filtering, drying, wherein the mesh number of the filtering is 400-460 meshes, and the drying temperature is 65-95 ℃ to prepare hard alloy mixed granules;
(5) The alloy mixture particles pass through a hollow cylindrical die and are hot-pressed at 80-120 ℃ under the pressure of 8Mpa by using a 20t press to prepare a hard alloy blank;
(6) Placing the alloy blank into a sintering furnace for sintering and forming, wherein the sintering temperature is 700-850 ℃, the argon pressure is 10-15 kPa, and the sintering time is 30-100 min.
In the alloy, iron is precipitated as iron-rich phase particles, serves as crystal nucleus to refine crystal grains, and prevents the crystal grains from growing greatly in a recrystallization mode, so that the mechanical property and the technological property of the alloy are improved. The iron content in the alloy is generally below 1.5%, the structure of the alloy is (alpha+beta), the alloy has high strength and toughness, good plasticity at high temperature and deformation in a cold state.
Nickel and copper can form a continuous solid solution, and the alpha phase area is remarkably enlarged. The addition of nickel to the alloy can significantly improve the corrosion resistance of brass in the atmosphere and seawater. Nickel also increases the recrystallization temperature of brass, promoting the formation of finer grains.
According to the elastic refrigeration alloy prepared by the invention, ni and Fe are added into raw materials to serve as crystal material inhibitors, so that crystal material refinement of an alloy structure is ensured, and the strength, wear resistance and corrosion resistance of the prepared material are effectively enhanced. The elastic refrigerating alloy prepared by the preparation method can be used in the fields of automobiles, aerospace and the like, overcomes the defects of multiple defects, easiness in fracture and rapid abrasion of materials, has fewer structural defects, high strength, high hardness, good wear resistance and good elastic refrigerating performance, can prolong the service life of parts and improves the use effect.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Description of the drawings:
FIG. 1 is a front view of a mold according to the present method of manufacture;
fig. 2 is a top view of the mold according to the present method of preparation.
In the figure: a mould for preparing elastic refrigeration alloy mainly comprises a resistance wire (1) and a cylindrical mould (2).
The specific embodiment is as follows:
the invention will be further illustrated with reference to specific examples.
(1) 80-88 parts of Cu powder with the Fisher particle size of 26-30 um, 10-17 parts of Zn powder with the Fisher particle size of 20-26 um, 0.7-1.0 part of Ni powder and 0.2-1.0 part of Fe powder are selected according to the material formula;
(2) 1Kg of planetary ball mill is selected, ni powder, fe powder and Zn powder are firstly added, hexane is added as grinding medium according to the proportion of 400ml/Kg, and the mixture is prepared according to the ball-material ratio of 5:1 adding grinding balls, stirring and grinding, wherein the diameter D7 of the grinding balls, the stirring speed of a ball mill is 480rpm, the filling coefficient is 0.65, and grinding is carried out for 1 hour;
(3) Then adding Cu and grinding for 3 hours to form slurry;
(4) Filtering, drying, wherein the mesh number of the filtering is 400-460 meshes, and the drying temperature is 65-95 ℃ to prepare hard alloy mixed granules;
(5) The alloy mixture particles pass through a hollow cylindrical die and are hot-pressed at 80-120 ℃ under the pressure of 8Mpa by using a 20t press to prepare a hard alloy blank;
(6) And placing the alloy blank into a sintering furnace for sintering and forming, wherein the sintering temperature is 700-850 ℃, the argon pressure is 10-15 Kpa, and the sintering time is 30-100 min.
According to the elastic refrigeration alloy prepared by the invention, ni and Fe are added into raw materials to serve as crystal material inhibitors, so that crystal material refinement of an alloy structure is ensured, and the strength, wear resistance and corrosion resistance of the prepared material are effectively enhanced. The elastic refrigerating alloy prepared by the preparation method can be used in the fields of automobiles, aerospace and the like, overcomes the defects of multiple defects, easiness in fracture and rapid abrasion of materials, has fewer structural defects, high strength, high hardness, good wear resistance and good elastic refrigerating performance, can prolong the service life of parts and improves the use effect.
The technical scheme of the invention is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the invention fall within the protection scope of the invention.
Claims (6)
1. A preparation method of an elastic refrigeration alloy is characterized in that: the elastic refrigeration alloy is prepared by mixing, granulating and sintering the following raw materials in parts by weight: 80-88 parts of Cu powder with the Fisher particle size of 26-30 um, 10-17 parts of Zn powder with the Fisher particle size of 20-26 um, 0.7-1.0 part of Ni powder and 0.2-1.0 part of Fe powder, and selecting all the material components according to the material formula.
2. The method for preparing the elastic refrigeration alloy according to claim 1, wherein the method comprises the following steps: 1Kg of planetary ball mill is selected, ni powder, fe powder and Zn powder are firstly added, hexane is added as grinding medium according to the proportion of 400ml/Kg, and the mixture is prepared according to the ball-material ratio of 5:1, adding grinding balls, stirring and grinding, wherein the diameter D7 of the grinding balls, the stirring speed of a ball mill and 480rpm, the filling coefficient of the ball mill and the grinding are 0.65, and grinding for 1 hour.
3. The method for preparing the elastic refrigeration alloy according to claim 1, wherein the method comprises the following steps: then, cu was added and the mixture was milled for 3 hours to form a slurry.
4. The method for preparing the elastic refrigeration alloy according to claim 1, wherein the method comprises the following steps: filtering, drying, wherein the mesh number of the filtering is 400-460 meshes, and the drying temperature is 65-95 ℃ to prepare the hard alloy mixed material particles.
5. The method for preparing the elastic refrigeration alloy according to claim 1, wherein the method comprises the following steps: and (3) making the alloy mixture particles pass through a hollow cylindrical die, and hot-pressing at 80-120 ℃ by using a 20t press under the pressure of 8Mpa to prepare the hard alloy blank.
6. The method for preparing the elastic refrigeration alloy according to claim 1, wherein the method comprises the following steps: and (3) putting the alloy blank into a sintering furnace for sintering and forming, wherein the sintering temperature is 700-850 ℃, the argon pressure is 10-15 Kpa, and the sintering time is 30-100 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311582572.0A CN117604301A (en) | 2023-11-24 | 2023-11-24 | Preparation method of elastic refrigeration alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311582572.0A CN117604301A (en) | 2023-11-24 | 2023-11-24 | Preparation method of elastic refrigeration alloy |
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| CN117604301A true CN117604301A (en) | 2024-02-27 |
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| CN202311582572.0A Pending CN117604301A (en) | 2023-11-24 | 2023-11-24 | Preparation method of elastic refrigeration alloy |
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Citations (15)
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|---|---|---|---|---|
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-
2023
- 2023-11-24 CN CN202311582572.0A patent/CN117604301A/en active Pending
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