WO2014148127A1 - 高耐食性銅管 - Google Patents
高耐食性銅管 Download PDFInfo
- Publication number
- WO2014148127A1 WO2014148127A1 PCT/JP2014/052418 JP2014052418W WO2014148127A1 WO 2014148127 A1 WO2014148127 A1 WO 2014148127A1 JP 2014052418 W JP2014052418 W JP 2014052418W WO 2014148127 A1 WO2014148127 A1 WO 2014148127A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- corrosion
- copper pipe
- copper
- content
- pipe
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
Definitions
- the present invention relates to a highly corrosion-resistant copper pipe, and more particularly to a copper pipe suitably used for a heat transfer pipe, a refrigerant pipe, and the like in an air conditioner and a refrigerator.
- phosphorus (P) deoxidized copper tubes JIS which exhibit excellent characteristics in corrosion resistance, brazing property, thermal conductivity, bending workability, etc. in heat transfer pipes of air conditioners and refrigerant pipes of refrigeration equipment, etc. H3300-C1220T has mainly been used.
- the corrosion resistance is high, which contains 0.0025 to 0.01 wt% of P, and the balance is Cu and a usual impurity, or further, the oxygen concentration is 20 wtppm or less. It has been shown that a strength copper tube is proposed, whereby the corrosion resistance to ant-like corrosion can be improved. That is, in the case of an anoxic copper tube in which the content of P is extremely small, since the ant-like corrosion is suppressed, the content of P in the phosphorus-deoxidized copper tube is reduced to eliminate phosphorus. The aim is to improve the corrosion resistance against ant-like corrosion rather than acid copper pipes.
- the present invention has been made in the background of such circumstances, and the problem to be solved is an air conditioner which can exhibit higher corrosion resistance against nest-like corrosion of ant.
- Another object of the present invention is to provide a copper tube excellent in corrosion resistance that can be suitably used for a refrigeration device, and to advantageously improve the life of a device configured using such a copper tube.
- the present inventors found that P content is larger than the conventional pipe material made of phosphorus-deoxidized copper.
- the copper pipe which can further improve the corrosion resistance to the ant-like corrosion even more practically can be advantageously obtained, and the present invention has been completed.
- the present invention is characterized in that it contains P (phosphorus) in a proportion of 0.05 to 1.0% by weight, with the balance being composed of Cu (copper) and unavoidable impurities.
- the high corrosion resistance copper pipe is the gist of the invention.
- the conventional phosphorus-deoxidized copper tube has a P content of about 0.015 to 0.040% by weight, but a predetermined amount more than that of 0.05 to 0.05%.
- the corrosion resistance to ant-like corrosion can be significantly improved, and in particular, such corrosion resistance is more than that of a conventional oxygen-free copper pipe. It is surprising that you are good.
- the content of P is 0.10% by weight or more, and in another one of the desirable modes, The content of P is 0.15% by weight or more.
- the content of P is 0.8 wt% or less, and according to one of the other preferable embodiments, The content is at most 0.5% by weight.
- the content of the unavoidable impurities is 0.05 wt% or less in total.
- the heat transfer pipe in the air conditioner and the refrigerant pipe in the refrigeration machine which are made of the above-described high corrosion resistance copper pipe, are also the gist of the invention.
- P phosphorus
- the corrosion form of the copper pipe spreads in the pipe axis horizontal direction (the pipe surface) from the selective corrosion form progressing in the direction perpendicular to the pipe axis (the pipe thickness penetrating direction).
- the P content is 0.05% by weight or more because corrosion resistance to nest-like corrosion of ant is recognized.
- the P content exceeds 1.0% by weight, there is almost no change in the corrosion resistance against the ant's nest-like corrosion, but rather the processability decreases in the production of a copper tube, cracking etc. From the point of causing problems, the upper limit of P content needs to be limited to 1.0% by weight.
- this P content shall be 0.8 weight% or less preferably, and more preferably 0.5 weight% or less.
- the high corrosion resistance copper tube according to the present invention is made of a material having the balance of Cu (copper) and unavoidable impurities, in which Fe, Pb, Inevitable impurities such as Sn are generally adjusted to a total amount of 0.05% by weight or less.
- the same method as the conventional method is adopted, for example, casting of ingot or billet, extrusion of tube, tube Through the process of drawing, etc., to be manufactured.
- sizes, such as the outer diameter of the copper pipe obtained by doing in this way and thickness are suitably selected according to the use of a copper pipe.
- various known inner surface processings are applied to form various shapes. It is also effective to use a heat transfer tube provided with an inner groove.
- various copper tubes having a P content shown in Table 1 below and a composition consisting of the balance Cu and unavoidable impurities are conventionally used in the outer diameter: 9.52 mm and the thickness: 0.41 mm. It produced similarly and used for the following nest-like corrosion test of ant.
- a copper tube of the same size using a Cu material having a P content of 1.5% by weight and the balance being Cu and unavoidable impurities, cracking occurs and the purpose is It was not possible to obtain a copper tube.
- a phosphor-deoxidized copper tube and an oxygen-free copper tube of the same size were prepared.
- 2 is a 2 L poly container which can be sealed with a cap 4, and a test copper pipe 10 is passed through the cap 4 so as to penetrate a silicon plug 6 attached.
- the lower end opening of the test copper tube 10 is closed by a silicon plug 8 while being inserted into the poly container 2 at a predetermined depth.
- 100 ml of a formic acid aqueous solution having a predetermined concentration is accommodated in the poly container 2 in such a form that the formic acid aqueous solution does not come in contact with the test copper tube 10.
- the concentration of the formic acid aqueous solution 12 is made into three types, 0.01%, 0.1%, and 1%, and it is predetermined in the poly container 2 in which those formic acid aqueous solutions 12 are accommodated.
- the sample copper tube 10 is placed in a constant temperature bath at 40 ° C., taken out of the bath for 2 hours / day, and kept at room temperature (15 ° C.), so that the temperature difference Condensation on the surface of the test copper tube 10 was promoted. And the corrosion test under such conditions was carried out for 20 days.
- test copper pipe No. 1 having a P content in the range of 0.1 to 1.0% by weight was used.
- test copper pipe 8 made of No. 1 to 6 and the oxygen-free copper pipe, it was recognized that there was no occurrence of ant-like corrosion and only slight corrosion of the pipe surface.
- a test copper pipe 7 which is a phosphorus-deoxidized copper pipe and a test copper pipe 8 which is an oxygen free copper pipe.
- the corrosion depth is reduced on both sides of the phosphorus-deoxidized copper pipe (No. 7) having a P content of 0.03% by weight, and in particular, the phosphorus-deoxidized copper pipe In the copper tubes (No. 1 to No. 6) according to the present invention having a higher P content than No. 7), results superior in corrosion depth to the oxygen-free copper tubes (No. 8) are obtained. It is worth noting.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
4 キャップ
6 シリコン栓
8 シリコン栓
10 供試銅管
12 蟻酸水溶液
Claims (8)
- Pを0.05~1.0重量%の割合で含有し、残部がCuと不可避的不純物からなることを特徴とする高耐食性銅管。
- 前記Pの含有量が、0.10重量%以上である請求項1に記載の高耐食性銅管。
- 前記Pの含有量が、0.15重量%以上である請求項1又は請求項2に記載の高耐食性銅管。
- 前記Pの含有量が、0.8重量%以下である請求項1乃至請求項3の何れか1項に記載の高耐食性銅管。
- 前記Pの含有量が、0.5重量%以下である請求項1乃至請求項4の何れか1項に記載の高耐食性銅管。
- 前記不可避的不純物の含有量が、合計量で0.05重量%以下である請求項1乃至請求項5の何れか1項に記載の高耐食性銅管。
- 請求項1乃至請求項6の何れかに記載の高耐食性銅管からなることを特徴とする空調機器における伝熱管。
- 請求項1乃至請求項6の何れかに記載の高耐食性銅管からなることを特徴とする冷凍機器における冷媒管。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015504804A JP5775238B2 (ja) | 2013-03-19 | 2014-02-03 | 高耐食性銅管 |
CN201480016950.1A CN105143478B (zh) | 2013-03-19 | 2014-02-03 | 高耐蚀性铜管 |
US14/849,955 US20150377568A1 (en) | 2013-03-19 | 2015-09-10 | Highly corrosion-resistant copper tube |
US16/129,209 US20190011201A1 (en) | 2013-03-19 | 2018-09-12 | Highly corrosion-resistant copper tube |
US17/153,171 US11808532B2 (en) | 2013-03-19 | 2021-01-20 | Highly corrosion-resistant copper tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-055963 | 2013-03-19 | ||
JP2013055963 | 2013-03-19 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/849,955 Continuation US20150377568A1 (en) | 2013-03-19 | 2015-09-10 | Highly corrosion-resistant copper tube |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014148127A1 true WO2014148127A1 (ja) | 2014-09-25 |
Family
ID=51579822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/052418 WO2014148127A1 (ja) | 2013-03-19 | 2014-02-03 | 高耐食性銅管 |
Country Status (5)
Country | Link |
---|---|
US (3) | US20150377568A1 (ja) |
JP (1) | JP5775238B2 (ja) |
CN (1) | CN105143478B (ja) |
MY (1) | MY171959A (ja) |
WO (1) | WO2014148127A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017110246A (ja) * | 2015-12-15 | 2017-06-22 | 古河電気工業株式会社 | 銅管 |
JP6271826B1 (ja) * | 2016-09-29 | 2018-01-31 | 株式会社Uacj | 高耐食性銅管 |
WO2018025451A1 (ja) * | 2016-08-04 | 2018-02-08 | 株式会社Uacj | 高耐食性銅管 |
WO2018061270A1 (ja) * | 2016-09-28 | 2018-04-05 | 株式会社Uacj | 高耐食性銅管及びその製造方法 |
WO2018061277A1 (ja) | 2016-09-29 | 2018-04-05 | 株式会社Uacj | 高耐食性銅管 |
WO2018061271A1 (ja) * | 2016-09-29 | 2018-04-05 | 株式会社Uacj | 耐蟻の巣状腐食性に優れた銅管 |
WO2018123731A1 (ja) * | 2016-12-27 | 2018-07-05 | 株式会社Uacj | 耐蟻の巣状腐食性銅管及びそれを用いてなる耐食性向上方法 |
JP6383132B1 (ja) * | 2017-04-27 | 2018-08-29 | 株式会社Uacj | 耐蟻の巣状腐食性に優れた銅管 |
WO2018198408A1 (ja) | 2017-04-27 | 2018-11-01 | 株式会社Uacj | 耐蟻の巣状腐食性に優れた銅管 |
WO2019031191A1 (ja) * | 2017-08-10 | 2019-02-14 | 株式会社Uacj | 耐蟻の巣状腐食性銅管 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107339827B (zh) * | 2017-07-25 | 2024-03-19 | 广东美的制冷设备有限公司 | 换热器、空调器和制冷设备 |
CN108458510A (zh) * | 2018-05-23 | 2018-08-28 | 广东美的制冷设备有限公司 | 换热器、空调器和制冷设备 |
CN108895542A (zh) * | 2018-05-23 | 2018-11-27 | 广东美的制冷设备有限公司 | 空调器 |
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JPS61221344A (ja) * | 1985-03-27 | 1986-10-01 | Sumitomo Light Metal Ind Ltd | 給水給湯配管用銅合金材料 |
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JP2008304170A (ja) * | 2007-06-11 | 2008-12-18 | Kobe Steel Ltd | 耐スケール付着性熱交換器用伝熱管 |
JP2009235428A (ja) * | 2008-03-25 | 2009-10-15 | Kobelco & Materials Copper Tube Inc | 銅合金部材及び熱交換器 |
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JP4963078B2 (ja) * | 2007-03-30 | 2012-06-27 | 株式会社コベルコ マテリアル銅管 | 耐食性銅合金管 |
CN102978433A (zh) * | 2012-11-19 | 2013-03-20 | 宁波福士汽车部件有限公司 | 一种空调用铜合金管 |
JP5990497B2 (ja) | 2013-07-01 | 2016-09-14 | 株式会社コベルコ マテリアル銅管 | 耐食性無酸素銅合金管 |
-
2014
- 2014-02-03 WO PCT/JP2014/052418 patent/WO2014148127A1/ja active Application Filing
- 2014-02-03 JP JP2015504804A patent/JP5775238B2/ja active Active
- 2014-02-03 CN CN201480016950.1A patent/CN105143478B/zh active Active
- 2014-02-03 MY MYPI2015703212A patent/MY171959A/en unknown
-
2015
- 2015-09-10 US US14/849,955 patent/US20150377568A1/en not_active Abandoned
-
2018
- 2018-09-12 US US16/129,209 patent/US20190011201A1/en not_active Abandoned
-
2021
- 2021-01-20 US US17/153,171 patent/US11808532B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS61221344A (ja) * | 1985-03-27 | 1986-10-01 | Sumitomo Light Metal Ind Ltd | 給水給湯配管用銅合金材料 |
JP2001247923A (ja) * | 2000-03-07 | 2001-09-14 | Sanbo Copper Alloy Co Ltd | 耐孔食性銅基合金管材 |
JP2008304170A (ja) * | 2007-06-11 | 2008-12-18 | Kobe Steel Ltd | 耐スケール付着性熱交換器用伝熱管 |
JP2009235428A (ja) * | 2008-03-25 | 2009-10-15 | Kobelco & Materials Copper Tube Inc | 銅合金部材及び熱交換器 |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017110246A (ja) * | 2015-12-15 | 2017-06-22 | 古河電気工業株式会社 | 銅管 |
JPWO2018025451A1 (ja) * | 2016-08-04 | 2019-05-30 | 株式会社Uacj | 高耐食性銅管 |
WO2018025451A1 (ja) * | 2016-08-04 | 2018-02-08 | 株式会社Uacj | 高耐食性銅管 |
EP3495519A4 (en) * | 2016-08-04 | 2019-12-25 | UACJ Corporation | HIGHLY CORROSION RESISTANT COPPER PIPE |
WO2018061270A1 (ja) * | 2016-09-28 | 2018-04-05 | 株式会社Uacj | 高耐食性銅管及びその製造方法 |
JP6271826B1 (ja) * | 2016-09-29 | 2018-01-31 | 株式会社Uacj | 高耐食性銅管 |
WO2018061277A1 (ja) | 2016-09-29 | 2018-04-05 | 株式会社Uacj | 高耐食性銅管 |
WO2018061271A1 (ja) * | 2016-09-29 | 2018-04-05 | 株式会社Uacj | 耐蟻の巣状腐食性に優れた銅管 |
WO2018123731A1 (ja) * | 2016-12-27 | 2018-07-05 | 株式会社Uacj | 耐蟻の巣状腐食性銅管及びそれを用いてなる耐食性向上方法 |
US10302376B2 (en) | 2017-04-27 | 2019-05-28 | Uacj Corporation | Highly resistant copper tube against ant nest corrosion |
WO2018198408A1 (ja) | 2017-04-27 | 2018-11-01 | 株式会社Uacj | 耐蟻の巣状腐食性に優れた銅管 |
JP6383132B1 (ja) * | 2017-04-27 | 2018-08-29 | 株式会社Uacj | 耐蟻の巣状腐食性に優れた銅管 |
WO2019031191A1 (ja) * | 2017-08-10 | 2019-02-14 | 株式会社Uacj | 耐蟻の巣状腐食性銅管 |
Also Published As
Publication number | Publication date |
---|---|
CN105143478A (zh) | 2015-12-09 |
US11808532B2 (en) | 2023-11-07 |
MY171959A (en) | 2019-11-08 |
JPWO2014148127A1 (ja) | 2017-02-16 |
US20190011201A1 (en) | 2019-01-10 |
CN105143478B (zh) | 2017-07-07 |
US20210140727A1 (en) | 2021-05-13 |
US20150377568A1 (en) | 2015-12-31 |
JP5775238B2 (ja) | 2015-09-09 |
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