CN109482873A - A kind of preparation method of the copper mould for turbine casting - Google Patents
A kind of preparation method of the copper mould for turbine casting Download PDFInfo
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- CN109482873A CN109482873A CN201811647290.3A CN201811647290A CN109482873A CN 109482873 A CN109482873 A CN 109482873A CN 201811647290 A CN201811647290 A CN 201811647290A CN 109482873 A CN109482873 A CN 109482873A
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- copper mould
- copper
- turbine casting
- sintering
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 36
- 239000010949 copper Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000005266 casting Methods 0.000 title claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000002787 reinforcement Effects 0.000 claims abstract description 17
- 239000002082 metal nanoparticle Substances 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 11
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 9
- 238000005530 etching Methods 0.000 claims abstract description 9
- 239000008103 glucose Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 8
- 239000010439 graphite Substances 0.000 claims abstract description 8
- 238000005054 agglomeration Methods 0.000 claims abstract description 7
- 230000002776 aggregation Effects 0.000 claims abstract description 7
- 238000001755 magnetron sputter deposition Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 6
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 6
- 238000000748 compression moulding Methods 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims abstract description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 5
- 230000005518 electrochemistry Effects 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 9
- 238000004321 preservation Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000010936 titanium Substances 0.000 description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000004416 surface enhanced Raman spectroscopy Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- 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
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- 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
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1005—Pretreatment of the non-metallic additives
- C22C1/1015—Pretreatment of the non-metallic additives by preparing or treating a non-metallic additive preform
-
- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1005—Pretreatment of the non-metallic additives
- C22C1/1015—Pretreatment of the non-metallic additives by preparing or treating a non-metallic additive preform
- C22C1/1021—Pretreatment of the non-metallic additives by preparing or treating a non-metallic additive preform the preform being ceramic
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Ceramic Engineering (AREA)
- Powder Metallurgy (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of preparation methods of copper mould for turbine casting.Method includes the following steps: the weight such as graphite phase silicon nitride, kaolin and titanium dioxide are mixed, puts into the ball mill under inert atmosphere, be ground to 200-300 mesh mixing fine powders, after compression molding, dry reinforcement；Step 2, by glucose and copper powder investment sintering furnace, matrix is obtained within sintering processes 30-45 minutes under vacuum environment；Step 3, processing is performed etching to matrix, form coarse surface, one layer of metal nanoparticle is deposited on coarse surface by magnetron sputtering, reinforcement is layered in metal nanoparticle layer again, whole to put into plasma agglomeration furnace, vacuum-sintering is to 1020 DEG C, heat preservation 20-30 minutes to get composite material；Step 4, according to design drawing, after composite material is melted, solidify again to get copper mould.The mold performance of material preparation of the present invention arrives, and thermal conductivity is strong, long service life.
Description
Technical field
The invention belongs to copper mould preparation technical fields, and in particular to a kind of preparation side of the copper mould for turbine casting
Method.
Background technique
Graphite phase carbon nitride (g-C3N4) be a kind of nonmetallic organic semiconductor, to visible light have certain absorption, it is antiacid,
The corrosion of alkali, light, stability is good, and structure and performance are easy to regulate and control, and has good photocatalysis performance.Temperature reaches in air
It at 600 DEG C, remains to be stabilized, apparent endothermic peak occurs at 630 DEG C.
The alloy that one or more of other elements are constituted is added using fine copper by matrix in copper alloy (copper alloy).
Fine copper is also known as red copper in Zi Hong Se ﹐.Fine copper density is that 8.96 ﹐ fusing points are that there is 1083 DEG C ﹐ excellent Dao electricity ﹑ Dao Re ﹑ to prolong
Malleability and corrosion resistance.It is mainly used for production and generates electricity Ji ﹑ Mu Xian ﹑ electricity Lan ﹑ Kai closing electrotechnical apparatus and the heat exchange such as Zhuan Zhi ﹑ transformer
The heat conduction equipments such as the flat plate collector of Qi ﹑ Guan Dao ﹑ solar heat collector.
Titanium is a kind of chemical element, chemical symbol Ti, atomic number 22, be located in the periodic table of chemical element the 4th period,
Group ivb.A kind of argenteous transition metal, it is characterized in that it is light-weight, intensity is high, tool metallic luster, moisture-proof chlorine corrosion.
The density of titanium is 4.506-4.516 grams/cc (20 DEG C), is higher than aluminium and is lower than iron, copper, nickel.But specific strength is located at metal
First of.1668 ± 4 DEG C of fusing point, 3.7-5.0 kilocalories/gram atom of the latent heat of fusion, 3260 ± 20 DEG C of boiling point, latent heat of vaporization 102.5-
112.5 kilocalories/gram atom, 4350 DEG C of critical-temperature, 1130 atmospheric pressure of critical pressure.The thermal conductivity and electric conductivity of titanium are poor,
Approximation or slightly below stainless steel, titanium have superconductivity, and the superconduction critical temperature of pure titanium is 0.38-0.4K.At 25 DEG C, titanium
Thermal capacitance is 0.126 card/gram atom degree, and 1149 cards of heat content/gram atom, entropy is 7.33 cards/gram atom degree, and Titanium is paramagnetic
Property substance, magnetic permeability 1.00004.
Turbine mold refers to the mold that wax pattern is generated in full form casting process, and cost is influenced by its structure, existing
Turbine mold after prolonged use, occurs rotating unstable, be easy to cause the inhomogeneity of turbine product, is not suitable for long-term
It utilizes, therefore, it is necessary to the materials to mold to improve, and improve the quality of turbine product.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is to provide a kind of preparations of copper mould for turbine casting
Method, the preparation method is simple, and gained copper mould thermal conductivity is strong, greatly shortens the setting time of molten alloyed copper, inhibits brilliant
Grain length is big, and quality is light.
A kind of preparation method of the copper mould for turbine casting, comprising the following steps:
Step 1, the weight such as graphite phase silicon nitride, kaolin and titanium dioxide are mixed, are put into the ball mill under inert atmosphere,
200-300 mesh mixing fine powders are ground to, after compression molding, dry reinforcement；
Step 2, by glucose and copper powder investment sintering furnace, matrix is obtained within sintering processes 30-45 minutes under vacuum environment；
Step 3, processing is performed etching to matrix, forms coarse surface, deposit one on coarse surface by magnetron sputtering
Layer metal nanoparticle, then reinforcement is layered in metal nanoparticle layer, whole to put into plasma agglomeration furnace, vacuum-sintering
To 1020 DEG C, 20-30 minutes are kept the temperature to get composite material；
Step 4, according to design drawing, after composite material is melted, solidify again to get copper mould.
It is the pressure that is molded in step 1 as improved is 75-82MPa, drying temperature is 250-290 DEG C.
It is that the vacuum degree of vacuum environment is lower than -0.1MPa in step 2 as improved, the heating rate of sintering processes is
10-15 DEG C/min is warming up to 1250 DEG C.
It is that the molar ratio of glucose and copper powder is 4-8:1 in step 2 as improved.
It is that reinforcement and the molar ratio of matrix are 1:5-8 in step 3 as improved.
It is that etching processing is a kind of in electrochemistry or optical electro-chemistry in step 3 as improved.
It is that the partial size of metal nanoparticle is 4-7 μm in step 3 as improved.
It is that heating rate when plasma agglomeration in step 3 is 40-60 DEG C/min as improved.
The utility model has the advantages that
Compared with prior art, the present invention provides a kind of preparation method of copper mould for turbine casting, the preparation methods
Simply, gained composite materials property is excellent, and thermal conductivity is good, greatly shortens copper alloy solution curing time, inhibits crystal grain
It grows up, grain size is up to 7.5 grades or more.Copper powder is modified after processing as matrix using glucose, improves the resistance to of copper powder
Performance and heat-conducting effect are ground, after carrying out surface-enhanced raman scattering processing to the matrix after modification, then mixes burning with reinforcement
Knot, effectively increases the compatibility between component, further improves wearability.
Specific embodiment
The present invention is further described in detail below by specific embodiment.
Embodiment 1
A kind of preparation method of the copper mould for turbine casting, comprising the following steps:
Step 1, the weight such as graphite phase silicon nitride, kaolin and titanium dioxide are mixed, are put into the ball mill under inert atmosphere,
200 mesh mixing fine powders are ground to, after compression molding, dry reinforcement；The pressure of the molding is 75MPa, and drying temperature is
250℃；
It step 2, is that 4:1 is put into sintering furnace according to molar ratio by glucose and copper powder, sintering processes 30 minutes under vacuum environment
Obtain matrix；Vacuum degree is lower than -0.1MPa, and the heating rate of sintering processes is that 10 DEG C/min is warming up to 1250 DEG C；
Step 3, electrochemical etching processing is carried out to matrix, coarse surface is formed, through magnetron sputtering on coarse surface
Depositing one layer of partial size is 4 μm of metal nanoparticles, then reinforcement is layered in metal nanoparticle layer, and the whole plasma that puts into is burnt
In freezing of a furnace, vacuum-sintering keeps the temperature 20 minutes to 1020 DEG C to get composite material；The molar ratio of the Qiang Tiyu matrix is 1:5；
Heating rate when plasma agglomeration is 40 DEG C/min；
Step 4, according to design drawing, after composite material is melted, solidify again to get copper mould.
The material prepared to step 3 in embodiment 1 is tested, consistency 96.5%, hardness 523HV, according to national standard
Defined method test wear rate is 15%, and thermal conductivity is 7.5 times of iron, greatly shortens the setting time of molten alloyed copper, is pressed down
Combinations grain length is big, and grain size is up to 7.5 grades.
Embodiment 2
A kind of preparation method of the copper mould for turbine casting, comprising the following steps:
Step 1, the weight such as graphite phase silicon nitride, kaolin and titanium dioxide are mixed, are put into the ball mill under inert atmosphere,
280 mesh mixing fine powders are ground to, after compression molding, dry reinforcement；The pressure of molding is 80MPa, drying temperature 268
℃；
It step 2, is that 7:1 is put into sintering furnace according to molar ratio by glucose and copper powder, sintering processes 42 minutes under vacuum environment
Obtain matrix；The vacuum degree of vacuum environment is lower than -0.1MPa, and the heating rate of sintering processes is that 12 DEG C/min is warming up to 1250 DEG C；
Step 3, optical electro-chemistry etching processing is carried out to matrix, coarse surface is formed, by magnetron sputtering on coarse surface
Upper one layer of partial size of deposition is 6 μm of metal nanoparticles, then reinforcement is layered in metal nanoparticle layer, whole to put into plasma
In sintering furnace, vacuum-sintering keeps the temperature 28 minutes to 1020 DEG C to get composite material；Heating rate when plasma agglomeration is 50
℃/min；Reinforcement and the molar ratio of matrix are 1:7；
Step 4, according to design drawing, after composite material is melted, solidify again to get copper mould.
The material prepared to step 3 in embodiment 2 is tested, consistency 98.5%, hardness 513HV, according to national standard
Defined method test wear rate is 5%, and thermal conductivity is 8.2 times of iron, greatly shortens the setting time of molten alloyed copper, is pressed down
Combinations grain length is big, and grain size is up to 8.0 grades.
Embodiment 3
A kind of preparation method of the copper mould for turbine casting, comprising the following steps:
Step 1, the weight such as graphite phase silicon nitride, kaolin and titanium dioxide are mixed, are put into the ball mill under inert atmosphere,
300 mesh mixing fine powders are ground to, after compression molding, dry reinforcement；The pressure of molding is 82MPa, drying temperature 290
℃；
It step 2, is that 8:1 is put into sintering furnace according to molar ratio by glucose and copper powder, sintering processes 45 minutes under vacuum environment
Obtain matrix；Vacuum degree is lower than -0.1MPa, and the heating rate of sintering processes is that 10-15 DEG C/min is warming up to 1250 DEG C；
Step 3, electrochemical etching processing is carried out to matrix, coarse surface is formed, through magnetron sputtering on coarse surface
Depositing one layer of partial size is 7 μm of metal nanoparticles, then reinforcement is layered in metal nanoparticle layer, and the whole plasma that puts into is burnt
In freezing of a furnace, vacuum-sintering keeps the temperature 20-30 minutes to 1020 DEG C to get composite material；Reinforcement and the molar ratio of matrix are 1:8；
Heating rate when plasma agglomeration is 60 DEG C/min；
Step 4, according to design drawing, after composite material is melted, solidify again to get copper mould.
The material prepared to step 3 in embodiment 3 is tested, consistency 93.5%, hardness 493HV, according to national standard
Defined method test wear rate is 18%, and thermal conductivity is 8.0 times of iron, greatly shortens the setting time of molten alloyed copper, is pressed down
Combinations grain length is big, and grain size is up to 7.5 grades.
Comparative example 1
Except being free of " electrochemical etching processing is carried out to matrix, coarse surface is formed, through magnetron sputtering on coarse surface
Depositing one layer of partial size is 7 μm of metal nanoparticles " outside, remaining is the same as embodiment 2.
The material prepared to comparative example 1 is tested, consistency 82.5%, hardness 328HV, according to national regulations
Method test wear rate is 35%.
Comparative example 2
In addition to without graphite phase carbon nitride, remaining is the same as embodiment 2.
The material prepared to comparative example 2 is tested, consistency 89.5%, hardness 358HV, according to national regulations
Method test wear rate is 18%, and thermal conductivity is 3.2 times of iron, greatly shortens the setting time of molten alloyed copper, inhibits crystal grain
It grows up, grain size is up to 3.2 grades.
The step of being related to material application in embodiment 1-3 and comparative example 1-2, referring to the application of prior art material.
As can be seen that composite materials property of the invention is good in from the above, wear-resistant, thermal conductivity is good, greatly shortens copper
Alloy solution curing time inhibits crystal grain to grow up, and grain size is up to 7.5 grades or more.
The foregoing is only a preferred embodiment of the present invention, protection of the invention enclose it is without being limited thereto, it is any be familiar with
Those skilled in the art within the technical scope of the present disclosure, the technical solution that can be become apparent to it is simple
Variation or equivalence replacement are fallen within the protection scope of the present invention.
Claims (8)
1. a kind of preparation method of the copper mould for turbine casting, which comprises the following steps: step 1, by graphite
The mixing of the weight such as phase silicon nitride, kaolin and titanium dioxide, puts into the ball mill under inert atmosphere, is ground to 200-300 mesh
Mixing fine powders, after compression molding, dry reinforcement；Step 2, glucose and copper powder are put into sintering furnace, under vacuum environment
Obtain matrix within sintering processes 30-45 minutes；Step 3, processing is performed etching to matrix, forms coarse surface, passes through magnetron sputtering
One layer of metal nanoparticle is deposited on coarse surface, then reinforcement is layered in metal nanoparticle layer, whole investment etc.
In ion sintering furnace, vacuum-sintering keeps the temperature 20-30 minutes to 1020 DEG C to get composite material；Step 4, according to design drawing,
After composite material is melted, solidify again to get copper mould.
2. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 1
The pressure of middle molding is 75-82MPa, and drying temperature is 250-290 DEG C.
3. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 2
The vacuum degree of middle vacuum environment is lower than -0.1MPa, and the heating rate of sintering processes is that 10-15 DEG C/min is warming up to 1250 DEG C.
4. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 2
The molar ratio of middle glucose and copper powder is 4-8:1.
5. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 3
Middle reinforcement and the molar ratio of matrix are 1:5-8.
6. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 3
Middle etching processing is a kind of in electrochemistry or optical electro-chemistry.
7. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 3
The partial size of middle metal nanoparticle is 4-7 μm.
8. a kind of preparation method of copper mould for turbine casting according to claim 1, which is characterized in that step 3
In plasma agglomeration when heating rate be 40-60 DEG C/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1824434A (en) * | 2006-03-24 | 2006-08-30 | 周彦学 | Technological method of shaping automobile booster turbine and impeller using metallic powder injection |
| CN103752770A (en) * | 2013-12-30 | 2014-04-30 | 常州环能涡轮动力股份有限公司 | Mould for turbocharger turbine |
| CN104998674A (en) * | 2015-06-18 | 2015-10-28 | 常州大学 | Silicate clay-carbon nitride composite material of multilevel structure and preparation method of silicate clay-carbon nitride composite material |
| CN106955969A (en) * | 2017-05-27 | 2017-07-18 | 马鞍山方圆动力科技有限公司 | A kind of small turbine mould of high accuracy |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1824434A (en) * | 2006-03-24 | 2006-08-30 | 周彦学 | Technological method of shaping automobile booster turbine and impeller using metallic powder injection |
| CN103752770A (en) * | 2013-12-30 | 2014-04-30 | 常州环能涡轮动力股份有限公司 | Mould for turbocharger turbine |
| CN104998674A (en) * | 2015-06-18 | 2015-10-28 | 常州大学 | Silicate clay-carbon nitride composite material of multilevel structure and preparation method of silicate clay-carbon nitride composite material |
| CN106955969A (en) * | 2017-05-27 | 2017-07-18 | 马鞍山方圆动力科技有限公司 | A kind of small turbine mould of high accuracy |
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Application publication date: 20190319 |