SU794355A1 - Method of securing tube in the opening of heat exchanger tube wall - Google Patents

Method of securing tube in the opening of heat exchanger tube wall Download PDF

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Publication number
SU794355A1
SU794355A1 SU782715056A SU2715056A SU794355A1 SU 794355 A1 SU794355 A1 SU 794355A1 SU 782715056 A SU782715056 A SU 782715056A SU 2715056 A SU2715056 A SU 2715056A SU 794355 A1 SU794355 A1 SU 794355A1
Authority
SU
USSR - Soviet Union
Prior art keywords
mandrel
heat exchanger
securing
pipe
tube
Prior art date
Application number
SU782715056A
Other languages
Russian (ru)
Inventor
Виктор Павлович Исаков
Валерий Сергеевич Сапелкин
Александр Игоревич Соловей
Александр Петрович Образцов
Original Assignee
Предприятие П/Я А-1857
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 Предприятие П/Я А-1857 filed Critical Предприятие П/Я А-1857
Priority to SU782715056A priority Critical patent/SU794355A1/en
Application granted granted Critical
Publication of SU794355A1 publication Critical patent/SU794355A1/en

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Description

Предложенный способ позвол ет повысить надежность герметизации и упростить технологию изготовлени .The proposed method allows to increase the reliability of sealing and simplify the manufacturing technology.

Фор-мула изобретени Formulas of the invention

Claims (4)

1. Способ закреплени  трубы в отверстии трубпой решетки теплообменника путем пластической деформации концов трубы с помощью объемно-расшир емой оправки, устанавливаемой внутри трубы, воздействи  на оправку газовой средой и последующего ее удалени , отличающийс  тем, что, с целью повыщени  надежности герметизации и упрощени  технологии изготовлени , оправку выполн ют из ниоби , легированного металлом, выбранным из1. A method of securing a pipe in a hole in a tube of a heat exchanger grate by plastic deforming the pipe ends with a volume-expanding mandrel installed inside the pipe, acting on the mandrel with a gaseous medium and its subsequent removal, characterized in that in order to increase the sealing reliability and simplify the technology manufacturing, the mandrel is made of niobium doped with a metal selected from группы, содержащей цирконий и медь, и подвергают ее окислению.groups containing zirconium and copper, and subjected to its oxidation. 2.Способ по п. 1, отличающийс  тем, что оправку легируют цирконием в количестве 5-6 вес. %.2. A method according to claim 1, characterized in that the mandrel is alloyed with zirconium in an amount of 5-6 wt. % 3.Способ по п. 1, отличающийс  тем, что оправку легируют медью в количестве ЗО-50 вес. %.3. A method according to claim 1, characterized in that the mandrel is alloyed with copper in an amount of DF-50 weight. % 4.Способ по п. 1, отличающийс  тем, что окисление оправки производ т в воздушной среде при температуре 1000- 1200° С до превращени  ее в порошок.4. A method according to claim 1, characterized in that the oxidation of the mandrel is carried out in an air medium at a temperature of 1000-1200 ° C before turning it into a powder. Источник информации, прин тый во 15 внимание при экспертизе:The source of information taken into consideration during the examination: 1. Авторское свидетельство СССР по за вке № 2513568, кл. F 28 F 9/16, 1977.1. USSR author's certificate in application number 2513568, cl. F 28 F 9/16, 1977.
SU782715056A 1978-12-05 1978-12-05 Method of securing tube in the opening of heat exchanger tube wall SU794355A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782715056A SU794355A1 (en) 1978-12-05 1978-12-05 Method of securing tube in the opening of heat exchanger tube wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782715056A SU794355A1 (en) 1978-12-05 1978-12-05 Method of securing tube in the opening of heat exchanger tube wall

Publications (1)

Publication Number Publication Date
SU794355A1 true SU794355A1 (en) 1981-01-07

Family

ID=20806138

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782715056A SU794355A1 (en) 1978-12-05 1978-12-05 Method of securing tube in the opening of heat exchanger tube wall

Country Status (1)

Country Link
SU (1) SU794355A1 (en)

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