CN103361511B - Cu-Zn-Sn series copper alloy strip - Google Patents
Cu-Zn-Sn series copper alloy strip Download PDFInfo
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- CN103361511B CN103361511B CN201310104222.3A CN201310104222A CN103361511B CN 103361511 B CN103361511 B CN 103361511B CN 201310104222 A CN201310104222 A CN 201310104222A CN 103361511 B CN103361511 B CN 103361511B
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- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 30
- 229910007610 Zn—Sn Inorganic materials 0.000 title claims abstract description 19
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 230000005477 standard model Effects 0.000 claims abstract description 4
- 238000007747 plating Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 34
- 238000000137 annealing Methods 0.000 description 25
- 238000005097 cold rolling Methods 0.000 description 16
- 238000005096 rolling process Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 230000002929 anti-fatigue Effects 0.000 description 5
- 238000005098 hot rolling Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical class S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229910018100 Ni-Sn Inorganic materials 0.000 description 2
- 229910018532 Ni—Sn Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000020985 whole grains Nutrition 0.000 description 2
- BZOVBIIWPDQIHF-UHFFFAOYSA-N 3-hydroxy-2-methylbenzenesulfonic acid Chemical compound CC1=C(O)C=CC=C1S(O)(=O)=O BZOVBIIWPDQIHF-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 150000004780 naphthols Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- RCIVOBGSMSSVTR-UHFFFAOYSA-L stannous sulfate Chemical compound [SnH2+2].[O-]S([O-])(=O)=O RCIVOBGSMSSVTR-UHFFFAOYSA-L 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910000375 tin(II) sulfate Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Conductive Materials (AREA)
Abstract
The Cu-Zn-Sn series copper alloy strip with good alternating bending and resistent fatigue characteristic is provided.Cu-Zn-Sn series copper alloy strip, it contains the Zn of 2.0 ~ 12.0 quality %, the Sn of 0.1 ~ 1.0 quality %, remainder comprises copper and inevitable impurity, X-ray diffraction intensity from { 200 } face in surface is set to I { 200 }, is set to I { 311 } from the X-ray diffraction intensity in { 311 } face, is set to I { 220 } from the X-ray diffraction intensity in { 220 } face, and be set to I respectively by from pure copper powder end (200), (220) of standard model, the X-ray diffraction intensity in (311) face
0{ 200 }, I
0{ 220 }, I
0{ 311 }, time, 2.5≤［ I { 220 }/I is met
0{ 220 ｝ ］≤3.5,2.2≤［ I { 200 }/I
0{ 200 }+I { 311 }/I
0and 1.5≤I { 311 }/I { 200 } { 311 } ］.
Description
Technical field
The present invention relates to copper alloy bar, its can be suitable for battery jointing material (
) etc. require the purposes of alternating bending.
Background technology
The TunePower such as nickel-cadmium cell, lithium cell can be used for the portable e-machines such as pick up camera.In addition, comply with the trend reducing carrying capacity of environment in recent years, the needing of electromobile, hybrid vehicle also increases, and vehicle-mounted lithium-ion secondary cell is also developed.For these TunePowers, in order to ensure required electric capacity, the battery of multiple monomer structure is used with many state electrical connections close to each other.Metal parts for the connection of battery is called current collection joint or joint, in order to positively connect, mostly carries out deposition (patent documentation 1) by make use of the resistance welding of the heating caused by resistance with the electrode of battery.
In order to be accommodated in compactly in shell by the multiple batteries having welded joint on electrode, strict bending machining is implemented in butt junction.Therefore, the material requiring joint to use has and the good weldability of electrode and alternating bending.
When using the resistance welding machine of tandem type the stainless steel plate of formation electrode, mild steel plate to be connected with joint, if the electric conductivity of joint is too high, then excessive electric current flows through joint and causes melting loss.Therefore nickel, copper alloy etc. that electric conductivity is lower is employed in existing joint.
[prior art document]
[patent documentation]
[patent documentation 1] Japanese Patent Publication 2004-134197.
Summary of the invention
But, be subject to the surging impact of nickel price in recent years, in order to reduce costs, occur trend joint material being become copper alloy from nickel.As the copper alloy being suitable as joint material, Cu-Ni-Sn system alloy can be enumerated, but weldability and the alternating bending of Cu-Ni-Sn system alloy are insufficient, expect to improve these characteristics.
Therefore, the object of this invention is to provide the Cu-Zn-Sn series copper alloy strip with good alternating bending and resistent fatigue characteristic.
The present inventor's discovery, by reducing the ratio in { 220 } face and then increasing the ratio in { 200 } face and { 311 } face, can take into account good alternating bending and intensity.
Cu-Zn-Sn series copper alloy strip of the present invention contains the Zn of 2.0 ~ 12.0 quality %, the Sn of 0.1 ~ 1.0 quality %, remainder comprises copper and inevitable impurity, X-ray diffraction intensity from { 200 } face in surface is set to I { 200 }, is set to I { 311 } from the X-ray diffraction intensity in { 311 } face, is set to I { 220 } from the X-ray diffraction intensity in { 220 } face, and be set to I respectively by from pure copper powder end (200), (220) of standard model, the X-ray diffraction intensity in (311) face
0{ 200 }, I
0{ 220 }, I
0{ 311 }, time, 2.5≤［ I { 220 }/I is met
0{ 220 ｝ ］≤3.5,2.2≤［ I { 200 }/I
0{ 200 }+I { 311 }/I
0and 1.5≤I { 311 }/I { 200 } { 311 } ］.
The preferred element being selected from Ni, Mg, Fe, P, Mn and Cr more than one containing adding up to 0.005 ~ 0.8 quality % further.
Utilize the process of chopping (
) the crystallization particle diameter of trying to achieve is preferably less than 15 μm.
Preferred surface has soft heat plating Sn layer (
).
According to the present invention, the Cu-Zn-Sn series copper alloy strip with good alternating bending and resistent fatigue characteristic can be obtained.
The simple declaration of accompanying drawing
[Fig. 1] represents the figure electrode of the tab and cell that employ alloy bar of the present invention having been carried out the state of resistance welding.
[Fig. 2] represent the test of United Nations type antifatigue (
) figure of method of (fatigue test).
Embodiment
Cu-Zn-Sn series copper alloy strip below for embodiments of the present invention is described.Should illustrate, in the present invention, % unless otherwise specified, just represents quality %.
As shown in Figure 1, copper alloy bar of the present invention is cut into the tab 10 of such as strip, is connected (deposition) with the electrode 20a of cell 20 by resistance welding.In Fig. 1, be electrically connected between electrodes different for the polarity of each cell 20 with tab 10, be connected in series.
First, the restriction reason for copper alloy bar composition is described.
（Zn）
Make Zn content be 2.0 ~ 12.0 quality %, be preferably 2.0 ~ 9.0 quality %.When Zn is less than 2.0%, become insufficient as the intensity needed for joint, electric conductivity too uprises simultaneously, joint melting loss during welding, or electric current is difficult to flow through in the stainless steel plate, mild steel plate of electrode side, therefore weldability deterioration.If Zn is more than 12.0%, then Zn gasification when not only welding, material embrittlement, weldability deterioration, and electric conductivity step-down, be difficult to the high performance realizing battery.
（Sn）
Make Sn content be 0.1 ~ 1.0 quality %, be preferably 0.1 ~ 0.5 quality %.When Sn is less than 0.1%, sufficient intensity can not be obtained.When Sn is more than 1.0%, electric conductivity reduces.
(Addition ofelements other than the above)
For the object of intensity, thermotolerance, proof stress slackness etc. improving alloy, can further containing Ni, Mg, Fe, P, the Mn of being selected from adding up to 0.005 ~ 0.8 quality % in above-mentioned alloy bar, and more than one element in Cr.When the total amount of these elements is less than 0.005%, can not obtain required characteristic, when total amount is more than 0.8%, although can obtain required characteristic, electroconductibility, bendability reduce.
Then, for copper alloy bar texture (
) regulation be described.The present inventor etc. are studied the integrated level of each crystal plane when being manufactured under various conditions by Cu-Zn-Sn series copper alloy strip and the relation of alternating bending, analyze, and result obtains following knowledge.
First, Cu-Zn-Sn series copper alloy strip usually can by carry out hot rolling and building up by welding (
) after, repeatedly carry out for several times (usual about 2 times) cold rolling and annealing, finally carry out finish rolling (
) manufacture, alternating bending is the best when last annealing just completes, and while the degree of finish of precision work cold rolling (on bodyguard the cold Inter calendering of げ) increases, alternating bending reduces.On the other hand, the intensity of copper alloy bar improves while the degree of finish that precision work is cold rolling increases.
Therefore, in order to take into account good alternating bending and intensity, need too not improve the cold rolling degree of finish of precision work.While finish rolling degree of finish increases, I (220) increases, and I (200) and I (311) reduces, and therefore as described below, reduces the ratio in { 220 } face, increases the ratio in { 200 } face and { 311 } face further.The degree of finish of finish rolling is preferably made to be 15 ~ 50%.
In addition, if heat-up rate when improving annealing, then, compared with { 200 } face, { 311 } face as whole grain more grows, and the distortion in alloy bar tails off, and improves alternating bending and resistent fatigue characteristic thus.
Should illustrate, for the intensity (tensile strength) of Cu-Zn-Sn series copper alloy strip, if control texture as described above in addition, make following United Nations's type antifatigue stand the test, as long as be then that the tensile strength of more than 320MPa is just no problem.Especially, if be more than 400MPa, be then preferred.
Namely, X-ray diffraction intensity from { 200 } face in surface is set to I { 200 }, is set to I { 311 } from the X-ray diffraction intensity in { 311 } face, is set to I { 220 } from the X-ray diffraction intensity in { 220 } face, and be set to I respectively by from pure copper powder end (200), (220) of standard model, the X-ray diffraction intensity in (311) face
0{ 200 }, I
0{ 220 }, I
0{ 311 } time, the texture of Cu-Zn-Sn series copper alloy strip of the present invention is controlled, to meet 2.5≤［ I { 220 }/I
0{ 220 ｝ ］≤3.5,2.2≤［ I { 200 }/I
0{ 200 }+I { 311 }/I
0and 1.5≤I { 311 }/I { 200 } { 311 } ］.
［ I { 220 }/I
0when { 220 } ］ being less than 2.5, the cold rolling degree of finish of precision work is insufficient, and the intensity of copper alloy bar reduces.［ I { 220 }/I
0{ 220 } ］ time more than 3.5, the cold rolling degree of finish of precision work too uprises, and alternating bending reduces.
［ I { 200 }/I
0{ 200 }+I { 311 }/I
0when { 311 } ］ being less than 2.2, the cold rolling degree of finish of precision work too uprises, and alternating bending reduces.Should illustrate, for ［ I { 200 }/I
0{ 200 }+I { 311 }/I
0{ 311 } ］ the upper limit, such as, in manufacture, about 4.0 is the upper limit.
In addition, as mentioned above, in manufacture Cu-Zn-Sn series copper alloy strip, after hot rolling and building up by welding, repeatedly carry out several cold rolling and annealing, but improve annealing time heat-up rate time, compared with { 200 } face, { 311 } face as whole grain more grows, and the distortion in alloy bar tails off, and alternating bending and resistent fatigue characteristic improve further.If 1.5≤I { 311 }/I { 200 }, then the ratio in { 311 } face in texture fully becomes many, therefore preferably.Should illustrating, in order to make 1.5≤I { 311 }/I { 200 }, preferably making heat-up rate during annealing be such as 20 DEG C/more than sec.Should illustrate, the heat-up rate at present during annealing is generally 5 ~ 15 DEG C/sec.
The thickness of Cu-Zn-Sn series copper alloy strip of the present invention is not particularly limited, if but be below 0.4mm, then when for battery contact purposes etc., the while of can realizing light-weighted, alternating bending improves further, is therefore preferred.
In addition, Sn layer is plated in the soft heat that can be less than 5 μm at the one or both sides thickness setting of Cu-Zn-Sn series copper alloy strip of the present invention.Soft heat plating Sn layer can by implementing known plating Sn or implement above-mentioned plating Sn on the plating Cu bottom of 0.1 ~ 1.0 μm after, utilizing the mild melt treatment remaining on more than the melt temperature of Sn to be formed on the surface of Cu-Zn-Sn series copper alloy strip.Even if carry out the mild melt treatment that thickness is less than 5 μm, the integrated level (I { 220 } etc.) of the texture of above-mentioned copper alloy bar and alternating bending also do not change.
Cu-Zn-Sn series copper alloy strip of the present invention usually can by after carrying out hot rolling and building up by welding, repeatedly carries out (usual about 2 times) for several times cold rolling and annealing, finally carry out finish rolling to manufacture.Alternating bending is the best when last annealing just completes, and while the degree of finish that precision work is cold rolling increases, alternating bending reduces.
Further, as mentioned above, in order to make 1.5≤I { 311 }/I { 200 }, heat-up rate during annealing is preferably made to be 20 DEG C/more than sec.The upper limit of heat-up rate during annealing does not specify, such as, be 35 DEG C/about sec.
Should illustrate, the temperature at the end of preferably making hot rolling is such as 600 ~ 750 DEG C.
In addition, the highest threshold temperature of material during the above-mentioned annealing preferably carried out after hot rolling is less than 900 DEG C.When the highest threshold temperature of material during annealing is more than 900 DEG C, the crystallization particle diameter utilizing the process of chopping to try to achieve is more than 15 μm, and I { 311 }/I { 200 } is less than 1.5, has the situation of alternating bending difference.
Embodiment
The sample of each embodiment and comparative example makes as follows.
Take electrolytic copper as raw material, use air melting stove (large mood melting furnace) by the smelting copper alloy of composition table 1 Suo Shi, be cast as ingot bar.After this ingot bar is hot-rolled down to thickness of slab 10mm at 600 ~ 750 DEG C, carry out building up by welding, repeatedly carry out several cold rolling and annealing, finally carry out finish rolling, the thickness of slab after the finish rolling of embodiment 16 is 0.4mm, in addition, makes the thickness of slab after finish rolling be 0.15mm, the perparation of specimen.In addition, annealing (Ware Blunt) time furnace temperature be 650 ~ 1000 DEG C, annealing time is 15 ~ 110sec.During heat-up rate when slowing down annealing, reduce furnace temperature, extend annealing time.On the contrary, when accelerating heat-up rate when annealing, improve furnace temperature, shorten annealing time.In addition, when dropping into sample in stove, make K type thermopair and sample contacts, measure the highest threshold temperature of material when annealing.
Make cold rolling total degree of finish be 98%, the heat-up rate when degree of finish of finish rolling, annealing is as shown in table 1.
Further, for embodiment 17, for the two sides of gained sample, following method is utilized to implement pre-treatment, plating Cu bottom (under Cu め っ I) (thickness 0.5 μm) and plating Sn(thickness 1.5 μm successively), then plating Sn layer is carried out mild melt treatment.
Pre-treatment; 10 quality % sulfuric acid-1 quality % superoxols are utilized by sample to carry out pickling, removing surface film oxide.In alkali aqueous solution, sample is carried out electrolytic degreasing (current density: 7.5A/dm as negative electrode
2, grease-removing agent: sodium hydroxide 10g/L, sodium carbonate 30g/L, Starso 7g/L, remainder is water, temperature: 80 DEG C, and the time is 60 seconds).Then, 10 quality % aqueous sulfuric acids are used to carry out pickling.
Plating Cu; Bath composition: sulfuric acid 60g/L, copper sulfate 200g/L, remainder is water, electroplating bath temperature: 25 DEG C, current density: 5.0A/dm
2
Plating Sn; Bath composition: stannous sulfate 40g/L, sulfuric acid 60g/L, cresol sulfonic acid 40g/L, gelatin 2g/L ， β ?naphthols 1g/L, remainder is water, electroplating bath temperature: 20 DEG C, current density: 1.5A/dm
2
The mensuration of plating Cu thickness and plating Sn thickness; Adjusted by plating electrolysis time (め っ I Electricity Xie Shi Inter) (when electrolysis time is 2 minutes, the thickness of the Cu layer before mild melt treatment is 0.8 μm, and the thickness of Sn layer is about 1 μm).
Mild melt treatment; Temperature being adjusted to 400 DEG C, atmosphere gas is adjusted in the process furnace of nitrogen (below oxygen 1vol%), inserts sample 5 ~ 30 second after plating Sn, carries out water-cooled.
< X-ray diffraction intensity >
Measure { 200 }, { 311 } on surface, the X-ray diffraction intensity I in { 220 } face of gained sample respectively.Measure and use リ ガ Network RINT2500, x-ray bombardment condition uses Co valve tube, and setting tube voltage is 25KV, tube current is 20mA.Similarly, { 200 }, { 311 } of fine copper powder standard sample, the X-ray diffraction intensity I in face is measured respectively
0.
< crystallization particle diameter >
The process of chopping specified in JIS-H0501 is utilized to try to achieve the crystallization particle diameter of rolling parallel cut.
< tensile strength (TS) >
Utilize tensile testing machine, according to JIS-Z2241, measure the tensile strength (TS) on the direction parallel with rolling direction respectively.The tensile strength measured respectively for the direction parallel with rolling direction be averaged, the value of gained is shown in table 1.
< United Nations type antifatigue test (resistent fatigue characteristic) >
Carry out United Nations's type antifatigue test by the method shown in Fig. 2, evaluate resistent fatigue characteristic.United Nations's type antifatigue test is the one of fatigue test, as shown in Figure 2, by cell 20 with section (parallel connection) configuration of 3 row (series connection) × 2, after electrode 20a welds sample (tab) 10, outermost tab 10 is carried out soldering 32 on circuit substrate 30.Circuit substrate 30 is connected with junctor 40, and entirety is incorporated in shell 50.Make shell 50 in X-direction (being connected in series direction of cell 20), Y-direction (being connected in parallel direction of cell 20) and Z-direction (direction vertical with X-Y direction) respectively with amplitude: 0.8mm, vibrational frequency: 7.0 ~ 200Hz, sweep time: circulating in 7.5min × 12, (amounting to 90min) is vibrated.Direction of vibration is only the one of X, Y, Z all directions, instead of vibrates in a plurality of directions simultaneously, and vibrational frequency and time are ratio, and vibrational frequency is increased and decreased in above-mentioned scope.
So test, evaluate with following benchmark.As long as evaluating is zero.
Zero: the fracture or the crack that there is no joint after test
×: fracture or the crack after test with joint.
< alternating bending >
According to the mode that length direction is parallel with rolling direction, make the test film of 4 thickness 0.15mm, width 10mm, length 40mm, using the direction vertical with the length direction of test film as bending axis, carry out 180 ° bending after, then bend.In this, as 1 time, carry out alternating bending until sample breakage, obtain average fracture (alternating bending) number of times of 4 samples.Evaluate with following benchmark.Evaluate if ◎ ~ △, then there is no problem in practical use.
◎: alternating bending frequency is more than 3 times
Zero: alternating bending frequency is more than 2 times and is less than 3 times
△: alternating bending frequency is 2 times
×: alternating bending frequency is less than 2 times
The result of gained is shown in table 1.
[table 1]
Can clearly be learnt by table 1, at satisfied 2.5≤［ I { 220 }/I
0{ 220 ｝ ］≤3.5,2.2≤［ I { 200 }/I
0{ 200 }+I { 311 }/I
0{ 311 } ］ and each embodiment of 1.5≤I { 311 }/I { 200 } when, resistent fatigue characteristic and alternating bending are all excellent.
On the other hand, when the cold rolling degree of finish of precision work more than 50% comparative example 1,5,6, ［ I { 200 }/I
0{ 200 }+I { 311 }/I
0{ 311 } ］ be less than 2.2, alternating bending reduces.
Heat-up rate when annealing is less than comparative example 2,3 of 20 DEG C/sec, I { 311 }/I { 200 } is less than 1.5, and resistent fatigue characteristic reduces.
When not carrying out the cold rolling comparative example of precision work 4, and when the degree of finish that precision work is cold rolling is less than 15% comparative example 7, ［ I { 220 }/I
0{ 220 } ］ be less than 2.5, resistent fatigue characteristic is poor.
Heat-up rate when annealing be less than 20 DEG C/sec and the cold rolling degree of finish of precision work is less than 15% comparative example 8, I { 311 }/I { 200 } is less than while 1.5, ［ I { 220 }/I
0{ 220 } ］ be less than 2.5, both resistent fatigue characteristic and alternating bending are poor.
The highest threshold temperature of material when annealing more than 900 DEG C comparative example 9, the crystallization particle diameter after finish rolling is coarsening more than 15 μm, and I { 311 }/I { 200 } is less than 1.5, and alternating bending is poor.
The explanation of symbol
10 tabs
20 cells
20a electrode
Claims (2)
1.Cu-Zn-Sn series copper alloy strip, the Sn of the Zn of its (1) containing 2.0 ~ 12.0 quality %, 0.1 ~ 1.0 quality %, remainder is made up of copper and inevitable impurity, or the Sn of the Zn (2) containing 2.0 ~ 12.0 quality %, 0.1 ~ 1.0 quality % and containing more than one the element be selected from Ni, Mg, Fe, P, Mn and Cr adding up to 0.005 ~ 0.8 quality %, remainder is made up of copper and inevitable impurity
The crystallization particle diameter utilizing the process of chopping to try to achieve is less than 15 μm,
X-ray diffraction intensity from { 200 } face in surface is set to I { 200 }, is set to I { 311 } from the X-ray diffraction intensity in { 311 } face, is set to I { 220 } from the X-ray diffraction intensity in { 220 } face, and be set to I respectively by from pure copper powder end (200), (220) of standard model, the X-ray diffraction intensity in (311) face
0{ 200 }, I
0{ 220 }, I
0{ 311 } time,
Meet 2.5≤［ I { 220 }/I
0{ 220 ｝ ］≤3.5,2.2≤［ I { 200 }/I
0{ 200 }+I { 311 }/I
0and 1.5≤I { 311 }/I { 200 } { 311 } ］.
2. Cu-Zn-Sn series copper alloy strip according to claim 1, wherein, has soft heat plating Sn layer on surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-075874 | 2012-03-29 | ||
| JP2012075874A JP5130406B1 (en) | 2012-03-29 | 2012-03-29 | Cu-Zn-Sn copper alloy strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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| JP6803457B2 (en) | 2017-03-24 | 2020-12-23 | 株式会社Ihi | Abrasion resistant copper-zinc alloy and machinery using it |
| CN109022898A (en) * | 2018-09-11 | 2018-12-18 | 安徽楚江科技新材料股份有限公司 | A kind of production technology of automotive connector one-ton brass band |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1897171A (en) * | 2005-07-15 | 2007-01-17 | 日矿金属株式会社 | Cu-zn-sn alloy for electronic apparatus |
| CN102317483A (en) * | 2009-04-01 | 2012-01-11 | Jx日矿日石金属株式会社 | Cu-Zn-Sn alloy plate and tin-plated Cu-Zn-Sn alloy strip |
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| JP4522972B2 (en) * | 2005-04-28 | 2010-08-11 | 日鉱金属株式会社 | High gloss rolled copper foil for copper-clad laminates |
| JP4444245B2 (en) * | 2005-07-15 | 2010-03-31 | 日鉱金属株式会社 | Cu-Zn-Sn alloy for electrical and electronic equipment |
| JP5191725B2 (en) * | 2007-08-13 | 2013-05-08 | Ｄｏｗａメタルテック株式会社 | Cu-Zn-Sn based copper alloy sheet, manufacturing method thereof, and connector |
| JP5490594B2 (en) * | 2010-03-31 | 2014-05-14 | Ｊｘ日鉱日石金属株式会社 | Cu-Zn alloy strip for battery connection tab material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1897171A (en) * | 2005-07-15 | 2007-01-17 | 日矿金属株式会社 | Cu-zn-sn alloy for electronic apparatus |
| CN102317483A (en) * | 2009-04-01 | 2012-01-11 | Jx日矿日石金属株式会社 | Cu-Zn-Sn alloy plate and tin-plated Cu-Zn-Sn alloy strip |
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| TWI507550B (en) | 2015-11-11 |
| TW201348468A (en) | 2013-12-01 |
| CN103361511A (en) | 2013-10-23 |
| JP5130406B1 (en) | 2013-01-30 |
| JP2013204109A (en) | 2013-10-07 |
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