CN108359842A - A kind of polynary cast copper alloy of impeller high-performance and its manufacturing method and application - Google Patents
A kind of polynary cast copper alloy of impeller high-performance and its manufacturing method and application Download PDFInfo
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- CN108359842A CN108359842A CN201810547584.2A CN201810547584A CN108359842A CN 108359842 A CN108359842 A CN 108359842A CN 201810547584 A CN201810547584 A CN 201810547584A CN 108359842 A CN108359842 A CN 108359842A
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000005266 casting Methods 0.000 claims abstract description 58
- 239000000956 alloy Substances 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 40
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000010949 copper Substances 0.000 claims abstract description 31
- 239000000126 substance Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 19
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 19
- 229910052702 rhenium Inorganic materials 0.000 claims abstract description 19
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 19
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 19
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 19
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 18
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 18
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- 230000032683 aging Effects 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 238000010791 quenching Methods 0.000 claims description 12
- 230000000171 quenching Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000001939 inductive effect Effects 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 230000001550 time effect Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000009750 centrifugal casting Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005275 alloying Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000265 homogenisation Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 210000001519 tissues Anatomy 0.000 description 2
- 241000594011 Leuciscus leuciscus Species 0.000 description 1
- -1 Tin-lead Chemical compound 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000005712 crystallization Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making alloys
- C22C1/02—Making alloys by melting
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The present invention relates to the polynary cast copper alloy of impeller high-performance and its manufacturing method and applications, good mechanical performance can be effectively solved, the polynary cast copper alloy of impeller high-performance meets the requirement problem that practical impeller needs, method is that the chemical analysis mass percent of the cast copper alloy is：Zn：12.0~20.0%；Si：2.0~6.0%；Fe：1.0~8.5%；Cr：0.5~3.2%, Zr:0.02~0.08%, Mg：0.1~1.3%, Ti：0.1~3.8%, V：0.1~1.4%, Sc：0.02~0.42%, La：0.01~0.25%, Be：0.01~0.09%, Ni：0.05~1.0%, Al：0.1~0.65%, Mn：0.02~1.3%, Re：0.11~0.25%, surplus Cu, alloy composition of the present invention are scientific and reasonable, abundant raw material, preparation method is simple, easy to produce, effectively solves the production of high-performance impeller, it can be applied to the processing technologys such as conventional articulated gravity casting, counter-pressure casting, centrifugal casting, at low cost, performance is good, has significant production and processing advantage, application easy to spread, economic and social benefit are notable.
Description
Technical field
The present invention relates to alloy, the polynary cast copper alloy of especially a kind of impeller high-performance and its manufacturing method with answer
With.
Background technology
The common manufacture material of the parts such as the naval vessel pump housing, impeller, valve is mostly cast tin bronze, casting Huang at present
Copper, casting Tin-lead bronze etc., whens these alloy grainings, are presented mushy freezing characteristic, and crystallization temperature section is up to tens even numbers
Hundred degrees Celsius, obtained Solidification Microstructure of Castings coarse grains, element segregation is serious, and casting flaw is more, the mechanical property of material
It can be relatively low（Tensile strength is generally below 300MPa）, the parts such as the naval vessel pump housing, impeller, valve for being produced with it are easy out
Existing part life is partially short, even defect ware the problems such as.
With science and technology and marine cause rapid development have to the naval vessel pump housing, impeller, valve material it is higher
Material performance requirement, thus be badly in need of providing a kind of mechanical property higher, the Cu alloy material that the service life is longer meets reality
Production application needs.
Invention content
For the above situation, to overcome the defect of the prior art, the purpose of the present invention to be just to provide a kind of high property of impeller
The polynary cast copper alloy of energy and its manufacturing method and application, can effectively solve good mechanical performance, the polynary casting of impeller high-performance
Copper alloy is made, the requirement problem that practical impeller needs is met.
The technical solution that the present invention solves is, a kind of polynary cast copper alloy of impeller high-performance and its manufacturing method with answer
With the chemical analysis mass percent of the cast copper alloy is：Zn：12.0~20.0%；Si：2.0~6.0%；Fe：1.0~
8.5%；Cr：0.5~3.2%, Zr:0.02~0.08%, Mg：0.1~1.3%, Ti：0.1~3.8 %, V：0.1~1.4%, Sc：
0.02~0.42%, La：0.01~0.25%, Be：0.01~0.09%, Ni：0.05~1.0%, Al：0.1~0.65%, Mn：0.02
~1.3%, Re：0.11~0.25%, surplus Cu, the sum of each element chemical analysis mass percent total 100%（It is the same below）；
Preparation method includes the following steps：
(1) melting and casting：
The heating that heats up is added in vacuum induction melting furnace in copper billet, after copper billet fully melts, according to alloy proportioning components,
Each ingredient of alloy is added using secondary charging machine, be rapidly heated overheat, makes alloy each component uniform melt together, is cooled to
1150-1220 DEG C, 15~30min is kept the temperature, cast molding implements uninterrupted outer reinforcement magnetic in entire casting process to casting mold
, so that melt is solidified under the conditions of high-intensity magnetic field, obtains impeller casting；
(2) it is heat-treated：
The impeller casting of casting is heat-treated, method is：
A., impeller casting is first kept the temperature to 2~4h at 620~870 DEG C, carries out Water Quenching, impeller casting is taken out, is cooled to room temperature；
B. three-level interrupted aging processing is carried out to the impeller casting after water quenching cooling：Impeller casting is put into vacuum resistance furnace, the
The primary ageing treatment that 0.5~2.5h is once carried out at 160~180 DEG C, then carries out 1.5~8.5h at 410~480 DEG C
Secondary time effect processing, then again at 220~380 DEG C carry out 0.5~10h three-step aging processing.
The impeller produced can be effectively used for production high-performance impeller with the polynary cast copper alloy of high-performance, realize that impeller is used
Application of the polynary cast copper alloy of high-performance in preparing high-performance impeller.
Alloy composition of the present invention is scientific and reasonable, and abundant raw material, preparation method is simple, easy to produce, effectively solves high-performance leaf
The production of wheel, the polynary cast copper alloy of the present invention can be applied to the processing work such as conventional articulated gravity casting, counter-pressure casting, centrifugal casting
Skill, invention material alloys are formulated simple possible, and at low cost, performance is good, have significant production and processing advantage, easy to spread to answer
With economic and social benefit is notable.
Specific implementation mode
It elaborates with reference to embodiments to the specific implementation mode of the present invention.
The present invention in specific implementation, can be provided by following embodiment.
Embodiment 1
In specific implementation, the chemical analysis mass percent of the alloy is the present invention：Zn：13.5~18.5%；Si：3.0~
5.0%；Fe：2.0~4.5%；Cr：0.8~3.0%, Zr:0.04~0.06%, Mg：0.2~1.0%, Ti：0.2~3.6 %, V：
0.2~1.0%, Sc：0.03~0.38%, La：0.04~0.20%, Be：0.02~0.08%, Ni：0.15~0.85%, Al：0.2
~0.45%, Mn：0.03~1.2%, Re：0.13~0.20%, surplus Cu；
Preparation method includes the following steps：
(1) melting and casting：
The heating that heats up is added in vacuum induction melting furnace in copper billet, after copper billet fully melts, according to alloy proportioning components,
Each ingredient of alloy is added using secondary charging machine, be rapidly heated overheat, makes alloy each component uniform melt together, is cooled to
1150-1220 DEG C, 15~30min is kept the temperature, cast molding implements uninterrupted outer reinforcement magnetic in entire casting process to casting mold
, so that melt is solidified under the conditions of high-intensity magnetic field, obtains impeller casting；
(2) it is heat-treated：
The impeller casting of casting is heat-treated, method is：
A., impeller casting is first kept the temperature to 2~4h at 620~870 DEG C, carries out Water Quenching, impeller casting is taken out, is cooled to room temperature；
B. three-level interrupted aging processing is carried out to the impeller casting after water quenching cooling：Impeller casting is put into vacuum resistance furnace, the
The primary ageing treatment that 0.5~2.5h is once carried out at 160~180 DEG C, then carries out 1.5~8.5h at 410~480 DEG C
Secondary time effect processing, then again at 220~380 DEG C carry out 0.5~10h three-step aging processing.
Embodiment 2
In specific implementation, the chemical analysis mass percent of the alloy is the present invention：Zn：15.0~17.0%；Si：3.5~
4.5%；Fe：3.0~4.0%；Cr：1.0~2.5%, Zr:0.05~0.06%, Mg：0.4~0.8%, Ti：1.5~2.5 %, V：
0.3~0.8%, Sc：0.1~0.3%, La：0.08~0.18%, Be：0.04~0.07%, Ni：0.2~0.6%, Al：0.25~
0.35%, Mn：0.08~1.0%, Re：0.15~0.18%, surplus Cu, the preparation method is the same as that of Example 1.
Embodiment 3
In specific implementation, the chemical analysis mass percent of the alloy is Zn to the present invention：14.6%；Si：3.55%；Fe：
2.38%；Cr：1.55 %, Zr:0.05%, Mg：0.93%, Ti：1.26 %, V：0.88%, Sc：0.36%, La：0.06%, Be：
0.05%, Ni：0.74%, Al：0.33%, Mn：0.47%, Re：0.17%, surplus Cu, the preparation method is the same as that of Example 1.
Embodiment 4
In specific implementation, the chemical analysis mass percent of the alloy is the present invention：Zn：15.5%；Si：3.30%；Fe：
2.25%；Cr：1.45 %, Zr:0.07%, Mg：0.85%, Ti：1.20 %, V：0.75%, Sc：0.41%, La：0.12%, Be：
0.07%, Ni：0.82%, Al：0.40%, Mn：0.86%, Re：0.18%, surplus Cu, the preparation method is the same as that of Example 1.
Embodiment 5
In specific implementation, the chemical analysis mass percent of the alloy is the present invention：Zn：15.5%；Si：3.30%；Fe：
2.25%；Cr：1.45 %, Zr:0.07%, Mg：0.85%, Ti：1.20 %, V：0.75%, Sc：0.41%, La：0.12%, Be：
0.07%, Ni：0.82%, Al：0.40%, Mn：0.86%, Re：0.25%, surplus Cu, the preparation method is the same as that of Example 1.
Embodiment 6
In specific implementation, the chemical analysis mass percent of the alloy is the present invention：Zn：15.5%；Si：4.2%；Fe：3.5%；
Cr：1.75%, Zr:0.055%, Mg：0.65%, Ti：2.0%, V：0.55%, Sc：0.2%, La：0.13%, Be：0.03%, Ni：
0.4%, Al：0.3%, Mn：0.54%, Re：0.17%, surplus Cu, the preparation method is the same as that of Example 1.
Impeller prepared by above-described embodiment 1-6 can be effectively used for production high-performance leaf with the polynary cast copper alloy of high-performance
Wheel realizes application of the polynary cast copper alloy of impeller high-performance in preparing high-performance impeller.
The polynary cast copper alloy of impeller high-performance provided by the invention is uninterrupted to implement during solidification of metal melt
Additional high-intensity magnetic field, alloy melt are solidified in the case where adding magnetic field condition outside and are grown, the alloy material fine microstructures of gained, zero defect, firmly
Degree is high, and plasticity is good, is suitable for the production of the parts such as impeller, the pump housing, valve.
Impeller provided by the invention contains lot of trace alloy element in the polynary cast copper alloy of high-performance, passes through
The content proportioning of stringent control trace element, reaches the best fit between each element, to the mechanics of the polynary cast copper alloy
Performance raising is of great advantage, and tensile strength reaches as high as 745MPa.The elements such as Fe, V, Ti, Cr, Zr can with refiner material tissue,
Strengthening material matrix.The elements such as Sr, Re, La, Mg can play refining molten metal, eliminate impurity, the effect of stabilizing tissue, casting
After part is by heat treatment process, actual needs have been fully met.The impeller mechanics mechanical property of production is good, dense structure, nothing
Casting flaw, service life are long.
Polynary cast copper alloy provided by the invention can be applied to conventional articulated gravity casting, counter-pressure casting, centrifugal casting etc.
Processing technology, invention material alloys are formulated simple possible, and at low cost, performance is good, have apparent production and processing advantage.
And through testing and applying on the spot, extraordinary advantageous effects are achieved, relevant information is as follows：
Experiment 1
The polynary cast copper alloy material of impeller high-performance, including following chemical composition：Zn：14.6%；Si：3.55%；Fe：
2.38%；Cr：1.55 %, Zr:0.05%, Mg：0.93%, Ti：1.26 %, V：0.88%, Sc：0.36%, La：0.16%, Be：
0.05%, Ni：0.74%, Al：0.33%, Mn：0.47%, Re：0.17%, surplus Cu, each element chemical composition mass percent it
With total 100%.
By copper billet be added in vacuum induction melting furnace heat up heating, after copper billet fully melts, according to alloy at
Various alloying elements are added using secondary charging mechanism in distribution side（Alloying element is added in the form of intermediate alloy）, quickly rise
Temperature overheat is cooled to 1160 DEG C after alloy melt homogenization, casts after keeping the temperature 20min full and uniformization, cast entirely
Uninterrupted additional high-intensity magnetic field is implemented to casting mold in journey, melt solidifies under the conditions of high-intensity magnetic field and obtains impeller casting.
The impeller of casting is heat-treated, it is characterised in that：It comprises the following steps that：
1. as cast condition impeller keeps the temperature 2.4h at 815 DEG C, Water Quenching is carried out, takes out impeller casting, it is air-cooled.
2. the impeller casting after pair water quenching solid solution carries out three-level interrupted aging processing：As cast condition impeller is put into vacuum resistance
Stove, carries out 165 DEG C first, then the primary ageing treatment of 1.5h carries out 450 DEG C, the secondary time effect processing of 2.5h, when two level
After effect processing heat preservation, 230 DEG C are carried out, keeps the temperature the three-step aging processing of 8.5h.
Sampling carries out performance detection on impeller body, and mechanical property is as shown in table 1.
The polynary cast copper alloy impeller room-temperature mechanical property of high-performance in the experiment of table 11
| Alloying component | Tensile strength | Elongation |
| Experiment 1 | 745 | 25.4 |
Experiment 2
The polynary cast copper alloy material of high-performance, including following chemical composition：Zn：15.5%；Si：3.30%；Fe：2.25%；Cr：
1.45 %, Zr:0.07%, Mg：0.85%, Ti：1.20 %, V：0.75%, Sc：0.41%, La：0.12%, Be：0.07%, Ni：
0.82%, Al：0.40%, Mn：0.86%, Re：0.18%, surplus Cu, the sum of each element chemical analysis mass percent are total
100%。
By copper billet be added in vacuum induction melting furnace heat up heating, after copper billet fully melts, according to alloy at
Various alloying elements are added using secondary charging mechanism in distribution side（Alloying element is added in the form of intermediate alloy）, quickly rise
Temperature overheat is cooled to 1180 DEG C after alloy melt homogenization, casts after keeping the temperature 15min full and uniformization, cast entirely
Uninterrupted additional high-intensity magnetic field is implemented to casting mold in journey, metal bath solidifies under magnetic field condition and obtains impeller casting.
The impeller of casting is heat-treated, is comprised the following steps that：
1. as cast condition impeller keeps the temperature 3.5h at 785 DEG C, Water Quenching is carried out, takes out impeller casting, it is air-cooled.
2. the impeller casting after pair water quenching solid solution carries out three-level interrupted aging processing：As cast condition impeller is put into vacuum resistance
Stove, carries out 165 DEG C first, then the primary ageing treatment of 1.5h carries out 460 DEG C, the secondary time effect processing of 2.3h, when two level
After effect processing heat preservation, 230 DEG C are carried out, keeps the temperature the three-step aging processing of 9h.
Sampling carries out performance detection on impeller body, and mechanical property is as shown in table 2.
The polynary cast copper alloy impeller room-temperature mechanical property of high-performance in the experiment of table 22
| Alloying component | Tensile strength | Elongation |
| Experiment 2 | 690 | 22.6 |
Experiment 3
The polynary cast copper alloy material of high-performance, including following chemical composition：Zn：15.5%；Si：3.30%；Fe：2.25%；Cr：
1.45 %, Zr:0.07%, Mg：0.85%, Ti：1.20 %, V：0.75%, Sc：0.41%, La：0.12%, Be：0.07%, Ni：
0.82%, Al：0.40%, Mn：0.86%, Re：0.25%, surplus Cu, the sum of each element chemical composition mass percent are total
100%。
By copper billet be added in vacuum induction melting furnace heat up heating, after copper billet fully melts, according to alloy at
Various alloying elements are added using secondary charging mechanism in distribution side（Alloying element is added in the form of intermediate alloy）, quickly rise
Temperature overheat is cooled to 1170 DEG C after alloy melt homogenization, casts after keeping the temperature 20min full and uniformization, cast entirely
Uninterrupted additional high-intensity magnetic field is implemented to casting mold in journey, metal bath solidifies under magnetic field condition and obtains impeller casting.
The impeller of casting is heat-treated, it is characterised in that：It comprises the following steps that：
1. as cast condition impeller keeps the temperature 2.0h at 870 DEG C, Water Quenching is carried out, takes out impeller casting, it is air-cooled.
2. the impeller casting after pair water quenching solid solution carries out three-level interrupted aging processing：As cast condition impeller is put into vacuum resistance
Stove, carries out 160 DEG C first, then the primary ageing treatment of 2.5h carries out 480 DEG C, the secondary time effect processing of 2.0h, when two level
After effect processing heat preservation, 400 DEG C are carried out, keeps the temperature the three-step aging processing of 4.5h.
Sampling carries out performance detection on impeller body, and mechanical property is as shown in table 3.
The polynary cast copper alloy impeller room-temperature mechanical property of high-performance in the experiment of table 33
| Alloying component | Tensile strength | Elongation |
| Experiment 3 | 670 | 23.2 |
Same experiment has also been carried out to the alloy of other component different amounts, achieve it is same or similar as a result, this
In be not listed one by one, experiment shows that the polynary cast copper alloy impeller as-cast structure of high-performance of the present invention is fine and close, no casting flaw,
The polynary cast copper alloy impeller good mechanical performance of prepared high-performance, tensile strength reach as high as 745MPa, and hardness is high, resistance to
Mill property, corrosion resistance are good, and impeller service life improves 2~3 times.Impeller provided by the invention with polynary cast copper alloy chemistry at
Part formula is reasonable, and process is reliable and stable, and using effect is good, and purposes is wide, is a wound for the production of naval vessel impeller parts
Newly, economic and social benefit is notable.
Claims (9)
1. a kind of polynary cast copper alloy of impeller high-performance, it is characterised in that：The chemical analysis mass percent of alloy is：
Zn：12.0~20.0%；Si：2.0~6.0%；Fe：1.0~8.5%；Cr：0.5~3.2%, Zr:0.02~0.08%, Mg：0.1~
1.3%, Ti：0.1~3.8 %, V：0.1~1.4%, Sc：0.02~0.42%, La：0.01~0.25%, Be：0.01~0.09%,
Ni：0.05~1.0%, Al：0.1~0.65%, Mn：0.02~1.3%, Re：0.11~0.25%, surplus Cu.
2. the polynary cast copper alloy of impeller high-performance according to claim 1, it is characterised in that：The chemical analysis of alloy
Mass percent is：Zn：13.5~18.5%；Si：3.0~5.0%；Fe：2.0~4.5%；Cr：0.8~3.0%, Zr:0.04~
0.06%, Mg：0.2~1.0%, Ti：0.2~3.6 %, V：0.2~1.0%, Sc：0.03~0.38%, La：0.04~0.20%,
Be：0.02~0.08%, Ni：0.15~0.85%, Al：0.2~0.45%, Mn：0.03~1.2%, Re：0.13~0.20%, surplus
For Cu.
3. the polynary cast copper alloy of impeller high-performance according to claim 1, it is characterised in that：The chemical analysis of alloy
Mass percent is：Zn：15.0~17.0%；Si：3.5~4.5%；Fe：3.0~4.0%；Cr：1.0~2.5%, Zr:0.05~
0.06%, Mg：0.4~0.8%, Ti：1.5~2.5 %, V：0.3~0.8%, Sc：0.1~0.3%, La：0.08~0.18%, Be：
0.04~0.07%, Ni：0.2~0.6%, Al：0.25~0.35%, Mn：0.08~1.0%, Re：0.15~0.18%, surplus is
Cu。
4. the polynary cast copper alloy of impeller high-performance according to claim 1, it is characterised in that：The chemical analysis of alloy
Mass percent is Zn：14.6%；Si：3.55%；Fe：2.38%；Cr：1.55 %, Zr:0.05%, Mg：0.93%, Ti：1.26 %,
V：0.88%, Sc：0.36%, La：0.06%, Be：0.05%, Ni：0.74%, Al：0.33%, Mn：0.47%, Re：0.17%, surplus
For Cu.
5. the polynary cast copper alloy of impeller high-performance according to claim 1, it is characterised in that：Alloy chemistry at
Part mass percent is：Zn：15.5%；Si：3.30%；Fe：2.25%；Cr：1.45 %, Zr:0.07%, Mg：0.85%, Ti：1.20
%, V：0.75%, Sc：0.41%, La：0.12%, Be：0.07%, Ni：0.82%, Al：0.40%, Mn：0.86%, Re：0.18%, surplus
For Cu.
6. the polynary cast copper alloy of impeller high-performance according to claim 1, it is characterised in that：Alloy chemistry at
Part mass percent is：Zn：15.5%；Si：3.30%；Fe：2.25%；Cr：1.45 %, Zr:0.07%, Mg：0.85%, Ti：1.20
%, V：0.75%, Sc：0.41%, La：0.12%, Be：0.07%, Ni：0.82%, Al：0.40%, Mn：0.86%, Re：0.25%, surplus
For Cu.
7. the polynary cast copper alloy of impeller high-performance according to claim 1, it is characterised in that：The chemical analysis of alloy
Mass percent is：Zn：15.5%；Si：4.2%；Fe：3.5%；Cr：1.75%, Zr:0.055%, Mg：0.65%, Ti：2.0%, V：
0.55%, Sc：0.2%, La：0.13%, Be：0.03%, Ni：0.4%, Al：0.3%, Mn：0.54%, Re：0.17%, surplus Cu.
8. the manufacturing method of -7 polynary cast copper alloy of any one of them impeller high-performance of claims 1 or 2, feature exist
In including the following steps：
(1) melting and casting：
The heating that heats up is added in vacuum induction melting furnace in copper billet, after copper billet fully melts, according to alloy proportioning components,
Each ingredient of alloy is added using secondary charging machine, be rapidly heated overheat, makes alloy each component uniform melt together, is cooled to
1150-1220 DEG C, 15~30min is kept the temperature, cast molding implements uninterrupted outer reinforcement magnetic in entire casting process to casting mold
, so that melt is solidified under the conditions of high-intensity magnetic field, obtains impeller casting；
(2) it is heat-treated：
The impeller casting of casting is heat-treated, method is：
A., impeller casting is first kept the temperature to 2~4h at 620~870 DEG C, carries out Water Quenching, impeller casting is taken out, is cooled to room temperature；
B. three-level interrupted aging processing is carried out to the impeller casting after water quenching cooling：Impeller casting is put into vacuum resistance furnace, the
The primary ageing treatment that 0.5~2.5h is once carried out at 160~180 DEG C, then carries out 1.5~8.5h at 410~480 DEG C
Secondary time effect processing, then again at 220~380 DEG C carry out 0.5~10h three-step aging processing.
9. -7 polynary cast copper alloy of any one of them impeller high-performance of claims 1 or 2 is in preparing high-performance impeller
Application.
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