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公开(公告)号：US10557185B2
公开(公告)日：2020-02-11
申请号：US16274622
申请日：2019-02-13
发明人： Keiichiro Oishi , Kouichi Suzaki , Shinji Tanaka , Takayuki Oka
摘要： This free-cutting copper alloy contains 75.0%-78.5% Cu, 2.95%-3.55% Si, 0.07%-0.28% Sn, 0.06%-0.14% P, and 0.022%-0.25% Pb, with the remainder being made up of Zn and inevitable impurities. The composition satisfies the following relations: 76.2≤f1=Cu+0.8×Si−8.5×Sn+P+0.5×Pb≤80.3, 61.5≤f2=Cu−4.3×Si−0.7×Sn−P+0.5×Pb≤63.3. The area ratios (%) of the constituent phases satisfy the following relations: 25≤κ≤65, 0≤γ≤1.5, 0≤β≤0.2, 0≤μ≤2.0, 97.0≤f3=α+κ, 99.4≤f4=α+κ+γ+μ, 0≤f5=γ+μ≤2.5, 27≤f6=κ+6×γ1/2+0.5×μ≤70. The long side of the γ phase does not exceed 40 μm, the long side of the μ phase does not exceed 25 μm, and the κ phase is present within the α phase.
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公开(公告)号：US10538828B2
公开(公告)日：2020-01-21
申请号：US16325267
申请日：2017-08-15
发明人： Keiichiro Oishi , Kouichi Suzaki , Shinji Tanaka , Takayuki Oka
摘要： This free-cutting copper alloy contains 75.0 %-78.5% Cu, 2.95%-3.55% Si, 0.07%-0.28% Sn, 0.06%-0.14% P, and 0.022%-0.25% Pb, with the remainder being made up of Zn and inevitable impurities. The composition satisfies the following relations: 76.2≤f1=Cu+0.8×Si−8.5×Sn+P+0.5×Pb≤80.3, 61.5≤f2=Cu−4.3×Si−0.7×Sn−P+0.5×Pb≤63.3. The area ratios (%) of the constituent phases satisfy the following relations: 25≤κ≤65, 0≤γ≤1.5, 0≤β≤0.2, 0≤μ≤2.0, 97.0≤f3=α+κ, 99.4≤f4=α+κ+γ+μ, 0≤f5=γ+μ≤2.5, 27≤f6=κ+6×γ1/2+0.5×μ≤70. The long side of the γ phase does not exceed 40 μm, the long side of the μ phase does not exceed 25 μm, and the κ phase is present within the α phase.
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公开(公告)号：US20190241999A1
公开(公告)日：2019-08-08
申请号：US16274622
申请日：2019-02-13
发明人： Keiichiro Oishi , Kouichi Suzaki , Shinji Tanaka , Takayuki Oka
摘要： This free-cutting copper alloy contains 75.0%-78.5% Cu, 2.95%-3.55% Si, 0.07%-0.28% Sn, 0.06%-0.14% P, and 0.022%-0.25% Pb, with the remainder being made up of Zn and inevitable impurities. The composition satisfies the following relations: 76.2≤f1=Cu+0.8×Si−8.5×Sn+P+0.5×Pb≤80.3, 61.5≤f2=Cu−4.3×Si−0.7×Sn−P+0.5×Pb≤63.3. The area ratios (%) of the constituent phases satisfy the following relations: 25≤κ≤65, 0≤γ≤1.5, 0≤β≤0.2, 0≤μ≤2.0, , 97.0≤f3=α+κ, 99.4≤f4=α+κ+γ+μ, 0≤f5=γ+μ≤2.5, 27≤f6=κ+6×γ1/2+0.5×μ≤70. The long side of the γ phase does not exceed 40 μm, the long side of the μ phase does not exceed 25 μm, and the κ phase is present within the α phase.
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4.发明授权公开(公告)号：US09353426B2
公开(公告)日：2016-05-31
申请号：US14069086
申请日：2013-10-31
发明人： Shinji Tanaka , Keiichiro Oishi , Hiroharu Ogawa
摘要： Provided are a silver-white copper alloy which has superior mechanical properties such as hot workability, cold workability, or press property, color fastness, bactericidal and antibacterial properties, and Ni allergy resistance; and a method of producing such a silver-white copper alloy. The silver-white copper alloy includes 51.0 mass % to 58.0 mass % of Cu; 9.0 mass % to 12.5 mass % of Ni; 0.0003 mass % to 0.010 mass % of C; 0.0005 mass % to 0.030 mass % of Pb; and the balance of Zn and inevitable impurities, in which a relationship of 65.5≦[Cu]+1.2×[Ni]≦70.0 is satisfied between a content of Cu [Cu] (mass %) and a content of Ni [Ni] (mass %). In a metal structure thereof, an area ratio of β phases dispersed in an α-phase matrix is 0% to 0.9%.
摘要翻译： 提供具有优异的机械性能如热加工性，冷加工性或冲压性，耐色牢度，杀菌和抗菌性能以及耐镍过敏性的银白铜合金。 以及制造这种银白铜合金的方法。 银白色铜合金含有Cu：51.0质量％〜58.0质量％ 9.0质量％〜12.5质量％的Ni; 0.0003质量％〜0.010质量％ 0.0005质量％至0.030质量％的Pb; 在Cu [Cu]（质量％）的含量与Ni [Ni（Ni））含量之间，满足65.5＆nlE; [Cu] + 1.2×[Ni] / nlE; 70.0的关系的Zn和不可避免的杂质的平衡 ]（质量％）。 在其金属结构中，面积比为＆bgr; 分散在α相基体中的相为0〜0.9％。
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公开(公告)号：US20200165706A1
公开(公告)日：2020-05-28
申请号：US16482913
申请日：2018-02-21
发明人： Keiichiro Oishi , Kouichi Suzaki , Shinji Tanaka , Takayuki Oka
摘要： This free-cutting copper alloy comprises 75.4-78.7% Cu, 3.05-3.65% Si, 0.10-0.28% Sn, 0.05-0.14% P, and at least 0.005% to less than 0.020% Pb, with the remainder comprising Zn and inevitable impurities. The composition satisfies the following relations: 76.5≤f1=Cu+0.8×Si−8.5×Sn+P≤80.3; 60.7≤f2=Cu−4.6×Si−0.7×Sn−P≤62.1; and 0.25≤f7=P/Sn≤1.0. The area percentage (%) of respective constituent phases satisfies the following relations: 28≤κ≤67; 0≤γ≤1.0; 0≤β≤0.2; 0≤μ≤1.5; 97.4≤f3=α+κ; 99.4≤f4=α+κ+γ+μ; 0≤f5=γ+μ≤2.0; and 30≤f6=κ+6×γ1/2+0.5×μ≤70. The long side of the γ phase is at most 40 μm, the long side of the μ phase is at most 25 μm, and κ phase is present in α phase.
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6.发明申请公开(公告)号：US20190256960A1
公开(公告)日：2019-08-22
申请号：US16323112
申请日：2017-08-15
发明人： Keiichiro Oishi , Kouichi Suzaki , Shinji Tanaka , Yoshiyuki Goto
摘要： This free-cutting copper alloy casting contains 75.0-78.5% Cu, 2.95-3.55% Si, 0.07-0.28% Sn, 0.06-0.14% P, 0.022-0.20% Pb, with the remainder being made up of Zn and unavoidable impurities. The composition satisfies the following relations: 76.2≤f1=Cu+0.8×Si−8.5×Sn+P+0.5×Pb≤80.3, 61.2≤f2=Cu−4.4×Si−0.8×Sn−P+0.5×Pb≤62.8. The area ratios (%) of the constituent phases satisfy the following relations: 2.5≤κ65, 0≤γ≤2.0, 0≤β≤0.3, 0≤μ≤2.0, 96.5≤f3=α+κ, 99.2≤f4=α+κ+γ+μ, 0≤f6=γ+μ≤3.0, 29≤f6=κ+6×γ1/2+0.5×μ≤66. The long side of the γ phase does not exceed 50 μm, the long side of the μ phase does not exceed 25 μm, and the κ phase is present within the α phase.
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公开(公告)号：US20180155807A1
公开(公告)日：2018-06-07
申请号：US15805506
申请日：2017-11-07
CPC分类号： C22C9/04 , B22D21/005 , C21D8/02 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D9/46 , C22F1/08
摘要： A copper alloy according to the present invention includes 17 mass % to 34 mass % of Zn, 0.02 mass % to 2.0 mass % of Sn, 1.5 mass % to 5 mass % of Ni, and a balance consisting of Cu and unavoidable impurities, in which relationships of 12≤f1=[Zn]+5×[Sn]−2×[Ni]≤30, 10≤[Zn]−0.3×[Sn]−2×[Ni]≤28, 10≤f3={f1×(32−f1)×[Ni]}1/2≤33, 1.20≤0.7×[Ni]+[Sn]≤4, and 1.4≤[Ni]/[Sn]≤90 are satisfied, conductivity is 13% IACS to 25% IACS, a ratio of an α phase is 99.5% or more by area ratio or an area ratio of a γ phase (γ) % and an area ratio of a β phase (β) % in an α phase matrix satisfy a relationship of 0≤2×(γ)+(β)≤0.7.
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公开(公告)号：US20160201180A1
公开(公告)日：2016-07-14
申请号：US15079679
申请日：2016-03-24
CPC分类号： C22C9/04 , B22D21/005 , C21D8/02 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D9/46 , C22F1/08
摘要： A copper alloy according to the present invention includes 17 mass % to 34 mass % of Zn, 0.02 mass % to 2.0 mass % of Sn, 1.5 mass % to 5 mass % of Ni, and a balance consisting of Cu and unavoidable impurities, in which relationships of 12≦f1=[Zn]+5×[Sn]−2×[Ni]≦30, 10≦[Zn]−0.3×[Sn]−2×[Ni]≦28, 10≦f3={f1×(32−f1)×[Ni]}1/2≦33, 1.2≦0.7×[Ni]+[Sn]≦4, and 1.4≦[Ni]/[Sn]≦90 are satisfied, conductivity is 13% IACS to 25% IACS, a ratio of an α phase is 99.5% or more by area ratio or an area ratio of a γ phase (γ)% and an area ratio of a β phase (β)% in an α phase matrix satisfy a relationship of 0≦2×(γ)+(β)≦0.7.
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公开(公告)号：US20190169711A1
公开(公告)日：2019-06-06
申请号：US16324684
申请日：2017-08-15
发明人： Keiichiro Oishi , Kouichi Suzaki , Shinji Tanaka , Yoshiyuki Goto
摘要： This free-cutting copper alloy contains more than 77.0% but less than 81.0% Cu, more than 3.4% but less than 4.1% Si, 0.07% to 0.28% Sn, 0.06% to 0.14% P, and more than 0.02% but less than 0.25% Pb, with the remainder being made up of Zn and unavoidable impurities. The composition satisfies the following relations: 1.0≤f0=100×Sn/(Cu+Si+0.5×Pb+0.5×P−75.5)≤3.7, 78.5≤f1=Cu+0.8×Si−8.5×Sn+P+0.5×Pb≤83.0, 61.8≤f2=Cu−4.2×Si−0.5×Sn−2×P≤63.7. The area ratios (%) of the constituent phases satisfy the following relations, 36≤κ≤72, 0≤γ≤2.0, 0≤β≤0.5, 0≤μ≤2.0, 96.5≤f3=α+κ, 99.4≤f4=α+κ+γ+μ, 0≤f5=γ+μ≤3.0, 38≤f6=κ+6×γ1/2+0.5×μ≤80. The long side of the γ phase does not exceed 50 μm, and the long side of the μ phase does not exceed 25 μm.
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公开(公告)号：US20160201164A1
公开(公告)日：2016-07-14
申请号：US15024500
申请日：2014-09-26
IPC分类号： C22C9/04
CPC分类号： C22C9/04 , B22D21/005 , C21D8/02 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D9/46 , C22F1/08
摘要： A copper alloy according to the present invention includes 17 mass % to 34 mass % of Zn, 0.02 mass % to 2.0 mass % of Sn, 1.5 mass % to 5 mass % of Ni, and a balance consisting of Cu and unavoidable impurities, in which relationships of 12≦f1=[Zn]+5×[Sn]−2×[Ni]≦30, 10≦[Zn]−0.3×[Sn]−2×[Ni]≦28, 10≦f3={f1×(32−f1)×[Ni]}1/2≦33, 1.2≦0.7×[Ni]+[Sn]≦4, and 1.4≦[Ni]/[Sn]≦90 are satisfied, conductivity is 13% IACS to 25% IACS, a ratio of an α phase is 99.5% or more by area ratio or an area ratio of a γ phase (γ)% and an area ratio of a β phase (β)% in an α phase matrix satisfy a relationship of 0≦2×(γ)+(β)≦0.7.
摘要翻译： 根据本发明的铜合金，其中，Zn：17质量％〜34质量％，Sn：0.02质量％〜2.0质量％，Ni：1.5质量％〜5质量％，余量由Cu和不可避免的杂质构成 这些关系为12＆nlE; f1 = [Zn] + 5×[Sn] -2×[Ni]＆nlE; 30,10和nlE; [Zn] -0.3×[Sn] -2×[Ni]＆nlE; 28,10和nlE; f3 = {f1×（32-f1）×[Ni]} 1/2＆nlE; 33,1.2＆nlE; 0.7×[Ni] + [Sn]＆nlE; 4和1.4＆nlE; [Ni] / [Sn] 满足电导率为13％IACS〜25％IACS，α相比为99.5％以上，面积比或γ相（γ）％和面积比agrb的面积比。 α相中的相位（＆bgr）％满足0＆nlE; 2×（γ）+（＆bgr;）＆nlE; 0.7的关系。
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