Title:
COPPER PIPE HAVING EXCELLENT RESISTANCE TO ANT-NEST CORROSION
Document Type and Number:
WIPO Patent Application WO/2018/061271
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a copper pipe having excellent anti-corrosion properties, which can exhibit significantly higher resistance to ant-nest corrosion and which can be advantageously used as a heat transfer pipe, a refrigerant pipe, and the like, in an air conditioner or a refrigerator, and to advantageously improve the service life of a machine constituted using this type of copper pipe. This copper pipe contains 0.15-0.50 wt.% of P, with the remainder comprising Cu and unavoidable impurities, and is constituted so that the difference between the maximum and minimum values of the concentration of P in a Cu parent phase is less than 0.03 wt.% in a 300 μm × 300 μm region of a pipe wall section that is parallel to the pipe axis direction.
Inventors:
OYA YOSHIYUKI (JP)
KYO YOSHIHIKO (JP)
MAE SAORI (JP)
TAMAGAWA HIROKAZU (JP)
KYO YOSHIHIKO (JP)
MAE SAORI (JP)
TAMAGAWA HIROKAZU (JP)
Application Number:
PCT/JP2017/015006
Publication Date:
April 05, 2018
Filing Date:
April 12, 2017
Export Citation:
Assignee:
UACJ CORP (JP)
UACJ COPPER TUBE CORP (JP)
UACJ COPPER TUBE CORP (JP)
International Classes:
C22C9/00; F16L9/02; F28F21/08; C22F1/00; C22F1/08
Domestic Patent References:
| WO2014148127A1 | 2014-09-25 |
Foreign References:
| JP2012211384A | 2012-11-01 | |||
| JP2011042825A | 2011-03-03 | |||
| JP2008304170A | 2008-12-18 |
Attorney, Agent or Firm:
NAKASHIMA, Michio et al. (JP)
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