CN102605210B - Method for manufacturing complex copper-zinc alloy - Google Patents
Method for manufacturing complex copper-zinc alloy Download PDFInfo
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- CN102605210B CN102605210B CN201210082005.4A CN201210082005A CN102605210B CN 102605210 B CN102605210 B CN 102605210B CN 201210082005 A CN201210082005 A CN 201210082005A CN 102605210 B CN102605210 B CN 102605210B
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- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910001297 Zn alloy Inorganic materials 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 28
- 239000000956 alloy Substances 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000011701 zinc Substances 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 238000000137 annealing Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 6
- 238000007670 refining Methods 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000007872 degassing Methods 0.000 claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 5
- 230000000171 quenching effect Effects 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000007499 fusion processing Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 9
- 229910017518 Cu Zn Inorganic materials 0.000 abstract description 6
- 229910017752 Cu-Zn Inorganic materials 0.000 abstract description 6
- 229910017943 Cu—Zn Inorganic materials 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000013078 crystal Substances 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract 2
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 230000003749 cleanliness Effects 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
- 238000011112 process operation Methods 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000005382 thermal cycling Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910002535 CuZn Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910002056 binary alloy Inorganic materials 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
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Abstract
The invention relates to a method for manufacturing a complex copper-zinc alloy, which comprises the following steps: collecting materials, and selecting Zn, C, Mn, Si, Nb, Ti, V, Mo, Cr, Al and Cu in a certain proportion; placing the above materials in a 5t cover-type resistance furnace for smelting; degassing and deslagging in the smelting process, and carrying out high cleanliness refining; casting into a casting mold of an alloy; annealing for 24 hours at a temperature of 440-460 DEG C; processing an as-cast alloy into a column-shaped test piece by linear cutting; carrying out surface preprocessing on the cut test piece, and uniformly coating a solid lubricant on the surface of the cut test piece; continuously carrying out equal channel angular pressing on the cut test piece for 7-10 times; placing the test piece subjected to the equal channel angular pressing into an annealing furnace to be heated to 600 DEG C, and holding the temperature for 30 minutes; and taking out the test piece and carrying out oil quenching to the room temperature. The method provided by the invention is characterized in that crystal particles and second phase distribution shapes of Cu-Zn alloys are further refined, and the stability, the strength and the toughness of the alloy are improved; and the process operation and the equipment requirements are simple.
Description
Technical field
The present invention relates to a kind of copper-zinc alloy, particularly a kind of manufacture method with the complicated copper-zinc alloy of good stability.
Background technology
In prior art, various engineerings and workplace all be unable to do without automatic equipment, and some special occasions have strict demand for equipment temperature at work, except some extra cooling of tool and means, also conventionally need to adopt the material that thermal diffusivity is good; The heat-conductive characteristic of copper is very high, yet the reserves of copper are limited, and price was also constantly soaring in recent years, had increased production cost, so in actual production, had often adopted copper-zinc alloy as an alternative.
Common copper-zinc alloy be take copper as basis, and zinc is made main adding elements, and it has yellow attractive in appearance, and copper-zinc alloy has good heat dispersion equally, and it is cheap to compare pure Cu, has again certain mechanical property, is therefore used widely.Ordinary copper-zinc binary alloy comprises Various Tissues, and wherein α is the substitutional solid solution of zinc in copper mutually, and normal temperature can the about 38%Zn of solid solution, has face-centered cubic lattice, and plasticity is good, suitablely carries out cold and hot working, and along with molten Zn amount in Cu increases, solution strengthening effect strengthens; β is that electron compound CuZn is the sosoloid of base mutually, has body centered structure.Except α, β mutually, in copper-zinc alloy, generally also there is γ phase, γ be take the sosoloid that sophisticated electronic compound is base, has complicated cubic(al)grating, γ phase character is firmly crisp, unfavorable to copper alloy performance.
In order to improve the performance of common copper-zinc alloy, in prior art, conventionally in copper-zinc alloy, add a small amount of tin, aluminium, manganese, iron, silicon, nickel, lead and other elements, form ternary, quaternary, quinary alloy even, be complicated copper-zinc alloy, also claim special copper-zinc alloy.The tissue of complicated copper-zinc alloy, generally can calculate according to " the zinc equivalent coefficient " of addition element in copper-zinc alloy.In copper zinc alloy, add a small amount of other alloying elements, can make α/(alpha+beta) phase region in Cu-Zn state graph move to the left or to the right.So the tissue of special copper-zinc alloy, is equivalent in common copper-zinc alloy to increase or to have reduced the tissue of zinc content conventionally.For example, in Cu-Zn alloy, add the tissue after 1% Si, be equivalent to increase by the alloy structure of 10% Si in Cu-Zn alloy.So Si " zinc equivalent " is 10.Again for example, if " zinc equivalent coefficient " maximum of Si makes α/(alpha+beta) phase boundary in Cu-Zn system significantly shift to copper side, strongly dwindle alpha phase zone.Ni " zinc equivalent coefficient " is negative value, expands alpha phase zone.
Multielement enhanced is on a small quantity a kind of approach that improves alloy property, yet, because the α phase in special copper-zinc alloy and β are polynary complicated sosoloid mutually, add the γ phase that may occur, a small amount of element is deposited impact both ways simultaneously, on the one hand may put forward heavy alloyed solidity to corrosion, strength property, increase on the other hand the fragility of material, affect the performances such as the bending of alloy and machinability.So, for material selection and the component proportion thereof of alloy, need to just can obtain through great many of experiments and comparative analysis.
Equal-channel Angular Pressing full name is equal-channel angular pressing.Proposed the beginning of the seventies in last century by USSR (Union of Soviet Socialist Republics) people Segal, and material is subject to strong shearing strain in mould, and profile remains unchanged, thus can repeatedly push, thus accumulate a large amount of strains, can be used for refinement material grains.The nineties, professor Valiev has successfully utilized this method to realize microstructure ultra-fining treatment to coarse grained metal and alloy, thereby becomes gradually a kind of approach of main viscous deformation refinement.ECAP can obtain the severe plastic deformation method of Ultra-fine Grained and obtain further development and application as a kind of, and is regarded as one of technology of preparing of bulk metal super fine crystal material, is the problem that current international forward position attracts people's attention.Its advantage of ECAP is to produce large viscous deformation long-pending in the situation that not changing material cross-section, thereby makes the repeated deformation of material become possibility, can obtain large accumulation strain, and then can be effectively by the grain refining of block materials inside.ECAP belongs to complicated Nonlinear Large Deformation process, need to carry out great many of experiments select suitable process and parameter for concrete alloy.
Summary of the invention
The present invention is just to provide a kind of complicated copper-zinc alloy with good stability that special heat-radiating needs that has, and it draws to have good heat dispersion and mechanical property through experiment.
Technical scheme of the present invention is as follows:
A manufacture method for complicated copper-zinc alloy, comprises following steps:
1) draw materials, select the raw material of following chemical component weight per-cent:
Zn: 28~30%, C：0.02~0.03%；
Mn：2.1~2.3%； Si：0.15~0.20%，
Nb：0.04~0.06%， Ti：0.02~0.04%，
V：0.05~0.09%， Mo：0.1~0.4%，
Cr：0.55~0.65%， Al：0.06~0.10%
All the other are Cu and impurity;
2) above-mentioned materials is placed in to melting in 5t bell-type resistance furnace, degasification slagging-off in fusion process, thus carry out high-cleanness, high refining;
3) cast the casting mold of alloy;
4) through the homo genizing annelaing of 440 ° of C～460 ° C of 24 hours, process;
5) adopt line cutting cast alloy to be processed into the column test specimen of 10mm * 10mm * 40mm; 6) test specimen after cutting is carried out to surface preparation, surface uniform coating solid lubricant;
7) then insert and in mould, be preheated to 500 ℃ of insulations 30 minutes, then exert pressure and carry out continuous 7-10 passage Equal-channel Angular Pressing, between adjacent extruding passage, sample Rotate 180 is ° to improve extrusion tissue's homogeneity;
8) test specimen after Equal-channel Angular Pressing is put into annealing furnace and be heated to 600 ℃ of insulations 30 minutes, then take out oil quenching to room temperature.
Feature of the present invention is, preferably locate by experiment the proportioning of complicated copper-zinc alloy, and combine with thermal treatment process and Equal Channel Angular Pressing, further refinement Cu-Zn is associated golden crystal grain and second-phase distributional pattern, improve stability and intensity and the toughness of this alloy, and technological operation and equipment requirements simple.
Embodiment
Below in conjunction with specific examples, technical scheme of the present invention is further described.By following steps, manufacture the complicated copper-zinc alloy with good stability of the present invention.
Embodiment 1
1) draw materials, select the raw material of following chemical component weight per-cent:
Zn: 28%, C：0.02%；
Mn：2.1%； Si：0.15%，
Nb：0.04%， Ti：0.02%，
V：0.05%， Mo：0.1%，
Cr：0.55%， Al：0.06%
All the other are Cu and impurity;
2) above-mentioned materials is placed in to melting in 5t bell-type resistance furnace, degasification slagging-off in fusion process, thus carry out high-cleanness, high refining;
3) cast the casting mold of alloy;
4) through the homo genizing annelaing about 440 ° of C of 24 hours, process;
5) adopt line cutting cast alloy to be processed into the column test specimen of 10mm * 10mm * 40mm; 6) test specimen after cutting is carried out to surface preparation, surface uniform coating solid lubricant;
7) then insert and in mould, be preheated to 500 ℃ of insulations 30 minutes, then exert pressure and carry out continuous 7-10 passage Equal-channel Angular Pressing, between adjacent extruding passage, sample Rotate 180 is ° to improve extrusion tissue's homogeneity;
8) test specimen after Equal-channel Angular Pressing is put into annealing furnace and be heated to 600 ℃ of insulations 30 minutes, then take out oil quenching to room temperature.
The alloy components making carries out test force performance on CMT5105 electronic universal tester, and carries out fracture toughness property experiment in MTS material experiment technology.After tested, the yield strength of the complicated copper-zinc alloy with good stability that employing the present invention makes is 634MPa, and fracture toughness property is 936
, its grain size distribution is even, and crystal boundary is purified, and grain-size approximately 40 μ m, are starkly lower than original cast alloy.This alloy recovery of shape rate after 10 thermal cycling tests reaches stationary value, and it is worth up to 50%, also has good mechanical property when possessing excellent heat dispersion performance.
Embodiment 2
1) draw materials, select the raw material of following chemical component weight per-cent:
Zn: 30%, C： 0.03%；
Mn：2.3%； Si： 0.20%，
Nb：0.06%， Ti： 0.04%，
V： 0.09%， Mo：0.4%，
Cr： 0.65%， Al： 0.10%
All the other are Cu and impurity;
2) above-mentioned materials is placed in to melting in 5t bell-type resistance furnace, degasification slagging-off in fusion process, thus carry out high-cleanness, high refining;
3) cast the casting mold of alloy;
4) through the homo genizing annelaing about 460 ° of C of 24 hours, process.
5) adopt line cutting cast alloy to be processed into the column test specimen of 10mm * 10mm * 40mm; 6) test specimen after cutting is carried out to surface preparation, surface uniform coating solid lubricant;
7) then insert and in mould, be preheated to 500 ℃ of insulations 30 minutes, then exert pressure and carry out continuous 7-10 passage Equal-channel Angular Pressing, between adjacent extruding passage, sample Rotate 180 is ° to improve extrusion tissue's homogeneity;
8) test specimen after Equal-channel Angular Pressing is put into annealing furnace and be heated to 600 ℃ of insulations 30 minutes, then take out oil quenching to room temperature.
The alloy test specimen making carries out test force performance on CMT5105 electronic universal tester, and carries out fracture toughness property experiment in MTS material experiment technology.After tested, the yield strength of the complicated copper-zinc alloy with good stability that employing the present invention makes is 647MPa, and fracture toughness property is 867
, its grain size distribution is even, and crystal boundary is purified, and grain-size approximately 40 μ m, are starkly lower than original cast alloy.This alloy recovery of shape rate after 10 thermal cycling tests reaches stationary value, and it is worth up to 50%, also has good mechanical property when possessing excellent heat dispersion performance.
Claims (1)
1. a manufacture method for complicated copper-zinc alloy, is characterized in that, comprises following steps:
1) draw materials, select the raw material of following chemical component weight per-cent:
Zn: 28~30%, C：0.02~0.03%；
Mn：2.1~2.3%； Si：0.15~0.20%，
Nb：0.04~0.06%， Ti：0.02~0.04%，
V：0.05~0.09%， Mo：0.1~0.4%，
Cr：0.55~0.65%， Al：0.06~0.10%
All the other are Cu and impurity;
2) above-mentioned materials is placed in to melting in 5t bell-type resistance furnace, degasification slagging-off in fusion process, thus carry out high-cleanness, high refining;
3) cast the casting mold of alloy;
4) through the homo genizing annelaing of 440 ° of C～460 ° C of 24 hours, process;
5) adopt line cutting cast alloy to be processed into the column test specimen of 10mm * 10mm * 40mm; 6) test specimen after cutting is carried out to surface preparation, surface uniform coating solid lubricant;
7) then insert and in mould, be preheated to 500 ℃ of insulations 30 minutes, then exert pressure and carry out continuous 7-10 passage Equal-channel Angular Pressing, between adjacent extruding passage, test specimen Rotate 180 is ° to improve extrusion tissue's homogeneity;
8) test specimen after Equal-channel Angular Pressing is put into annealing furnace and be heated to 600 ℃ of insulations 30 minutes, then take out oil quenching to room temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210082005.4A CN102605210B (en) | 2012-03-26 | 2012-03-26 | Method for manufacturing complex copper-zinc alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210082005.4A CN102605210B (en) | 2012-03-26 | 2012-03-26 | Method for manufacturing complex copper-zinc alloy |
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| CN102605210B true CN102605210B (en) | 2014-08-27 |
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| RU2613234C2 (en) * | 2015-05-27 | 2017-03-15 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Cast brass |
| CN105441773A (en) * | 2015-11-15 | 2016-03-30 | 丹阳市德源精密工具有限公司 | Ferro-silicon alloy mold |
| CN111926273B (en) * | 2020-07-21 | 2022-02-22 | 河海大学 | Combined machining method of high-strength high-toughness H62 brass |
| CN114318190B (en) * | 2021-12-16 | 2023-01-10 | 河海大学 | Processing method for improving dezincification corrosion resistance of two-phase brass |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5896839A (en) * | 1981-12-02 | 1983-06-09 | Furukawa Electric Co Ltd:The | Copper alloy for resistance |
| JPS63100145A (en) * | 1986-10-15 | 1988-05-02 | Kobe Steel Ltd | Corrosion-resisting copper alloy and its production |
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| JP昭58-96839A 1983.06.09 |
| JP昭63-100145A 1988.05.02 |
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Address after: 523000, No. 89, Tong Tong Industrial Zone, Lin village, Tangxia Town, Guangdong, Dongguan Patentee after: Dongguan fast Precision Technology Co., Ltd Address before: 523000, No. 89, Tong Tong Industrial Zone, Lin village, Tangxia Town, Guangdong, Dongguan Patentee before: DONGGUAN FAST PRECISION HARDWARE Co.,Ltd. |