EP1146523A3 - Black oxide-containing coaxial cable and method of making the same - Google Patents

Black oxide-containing coaxial cable and method of making the same Download PDF

Info

Publication number
EP1146523A3
EP1146523A3 EP01303110A EP01303110A EP1146523A3 EP 1146523 A3 EP1146523 A3 EP 1146523A3 EP 01303110 A EP01303110 A EP 01303110A EP 01303110 A EP01303110 A EP 01303110A EP 1146523 A3 EP1146523 A3 EP 1146523A3
Authority
EP
European Patent Office
Prior art keywords
coaxial cable
degrees
black oxide
sheath
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01303110A
Other languages
German (de)
French (fr)
Other versions
EP1146523A2 (en
EP1146523B1 (en
Inventor
Farzad Kialashaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Whittaker Corp
Original Assignee
Whittaker Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whittaker Corp filed Critical Whittaker Corp
Publication of EP1146523A2 publication Critical patent/EP1146523A2/en
Publication of EP1146523A3 publication Critical patent/EP1146523A3/en
Application granted granted Critical
Publication of EP1146523B1 publication Critical patent/EP1146523B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1882—Special measures in order to improve the refrigeration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1808—Construction of the conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/225—Screening coaxial cables

Abstract

The coaxial cable (10) has a metallic signal-transmitting core (12), a dielectric component (14) which is resistant to temperatures of at least about 1000 degrees C., preferably 1000-1100 degrees C., surrounding the core, and a sheath (16) of stainless steel surrounding the dielectric component and core. The outer surface (20) of the sheath (16) has an adherent protective black oxide layer (22) which comprises chromium oxide, preferably in the form of chromic oxide, with essentially the remainder of the black oxide layer being iron oxide. The stainless steel sheath (16) preferably has about 18-20 weight percent of chromium with essentially the remainder being iron. The black oxide layer (22) is formed on the outer surface (20) of the assembled coaxial cable (18), in accordance with the present method, by passing the coaxial cable through a furnace having a hydrogen-free, wet-nitrogen atmosphere, at a temperature of at least about 1000 degrees C., preferably about 1000-1100 degrees C., and for a residence time in the furnace of about two to about five minutes.
EP01303110A 2000-03-31 2001-04-02 Black oxide-containing coaxial cable and method of making the same Expired - Lifetime EP1146523B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54103700A 2000-03-31 2000-03-31
US541037 2000-03-31

Publications (3)

Publication Number Publication Date
EP1146523A2 EP1146523A2 (en) 2001-10-17
EP1146523A3 true EP1146523A3 (en) 2002-02-13
EP1146523B1 EP1146523B1 (en) 2004-09-22

Family

ID=24157938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01303110A Expired - Lifetime EP1146523B1 (en) 2000-03-31 2001-04-02 Black oxide-containing coaxial cable and method of making the same

Country Status (3)

Country Link
EP (1) EP1146523B1 (en)
AT (1) ATE277413T1 (en)
DE (1) DE60105683D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909217B1 (en) * 2006-11-29 2009-02-13 Commissariat Energie Atomique ELECTRO-MAGNETIC HIGH ELECTRO-MAGNETIC ELECTRICAL CABLE HAVING A MINERAL INSULATION AND METHOD OF MANUFACTURING THE SAME
CN110783679B (en) * 2019-11-01 2021-06-01 中国电子科技集团公司第三十八研究所 Silicon-based single-channel transmission structure, coaxial array transmission structure and processing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892969A (en) * 1974-04-05 1975-07-01 Babcock & Wilcox Co Neutron detector with gamma compensated cable
US5646372A (en) * 1994-09-27 1997-07-08 Hitachi Cable Ltd. Metal tube and electric cable using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892969A (en) * 1974-04-05 1975-07-01 Babcock & Wilcox Co Neutron detector with gamma compensated cable
US5646372A (en) * 1994-09-27 1997-07-08 Hitachi Cable Ltd. Metal tube and electric cable using the same

Also Published As

Publication number Publication date
DE60105683D1 (en) 2004-10-28
EP1146523A2 (en) 2001-10-17
EP1146523B1 (en) 2004-09-22
ATE277413T1 (en) 2004-10-15

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