SU145043A1 - Method for determining mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes - Google Patents

Method for determining mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes

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Publication number
SU145043A1
SU145043A1 SU698887A SU698887A SU145043A1 SU 145043 A1 SU145043 A1 SU 145043A1 SU 698887 A SU698887 A SU 698887A SU 698887 A SU698887 A SU 698887A SU 145043 A1 SU145043 A1 SU 145043A1
Authority
SU
USSR - Soviet Union
Prior art keywords
coatings
conductive
mechanical strength
glass
enamel
Prior art date
Application number
SU698887A
Other languages
Russian (ru)
Inventor
В.П. Жукова
В.А. Светлов
Н.С. Смирнов
Original Assignee
В.П. Жукова
В.А. Светлов
Н.С. Смирнов
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 В.П. Жукова, В.А. Светлов, Н.С. Смирнов filed Critical В.П. Жукова
Priority to SU698887A priority Critical patent/SU145043A1/en
Application granted granted Critical
Publication of SU145043A1 publication Critical patent/SU145043A1/en

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Description

Известны способы определени  ме.ханнческой прочности неэлектрогфоводных (эмалевых, стекл нных и т. п.) покрытий внутренней поверхности .металлических труб, осуществл емые путем замыкани  электрической цепи между металлом издели  и электродом, помещенным со стороны  елровод щего сло  при разр шении последнего. Однако при применении таких способов затруднено определение момента разрушени  покрыти .There are known methods for determining the mechanical strength of non-electrophore (enamel, glass, etc.) coatings on the inner surface of metal pipes, carried out by closing the electrical circuit between the metal of the product and the electrode placed on the side of the conductive layer when the latter is broken. However, when using such methods, it is difficult to determine the moment of coating destruction.

При применении описываемого способа дл  точного определени  момента разрушени  покрыти  в процессе механических испытаний образца трубы этот образец заполн ют электропроводной жидкостью, в которую помещают электрод, и увеличивают нагрузку, приложенную i; трубе, до замыкани  сигнальной цепи между трубой и электродом.When applying the described method to accurately determine the moment of destruction of the coating during the mechanical testing of a sample of a pipe, this sample is filled with an electrically conductive liquid into which an electrode is placed and increases the load applied i; pipe, before closing the signal circuit between the pipe and the electrode.

На чертеже изображен образен трубы, подготовленный дл  проведени  испытаний.The drawing depicts tubes prepared for testing.

Способ определени  механической прочности неэлектропроводных покрытий внутренних поверхностей металлических труб состоит в том, что образец / трубы, имеющий защитное покрытие 2, закрывают с обеих сторон резиновыми пробками 3 и 4, сквозь которые пропущены изогнутые стекл нные трубки 5 и 6. Затем внутреннюю полость 7 образца / заполн ют через трубки 5 и б электропроводной жидкостью, например 10%-ным раствором хлористого натра, и помещают в испытательную мащину, при помощи которой его подвергают действию статической нагрузки, увеличиваемо равномерно и с небольщой скоростью .В течение всего времени нспыташи к электролиту подвод т элекгрический ток по медному электроду 8, проход щему сквозь пробку 3. В момепт разрущени  покрыти  2, например по влени  в нем трещин или отколов, электролит вступает в контакт с металлом образца /, про . I4o()-i:j2The method for determining the mechanical strength of non-conductive coatings on the inner surfaces of metal pipes is that the sample / pipes with a protective coating 2 are closed on both sides with rubber stoppers 3 and 4, through which curved glass tubes 5 and 6 are passed. Then the internal cavity 7 of the sample / is filled through tubes 5 and b with an electrically conductive liquid, for example, 10% sodium chloride solution, and placed in a test tank, by means of which it is subjected to a static load, increasing Oddly and at a low speed. Throughout the entire time, an electric current is applied to the electrolyte through a copper electrode 8 passing through the stopper 3. The electrolyte comes into contact with the metal of the sample during the destruction of coating 2, for example. /, about. I4o () - i: j2

извод  замыкание электрическоГ| цепи .между ш-ьм и электродом 8. Это вызывает срабатывание сигнальной цепи, оповещающей звуковым, CBI70ВЫМ или каким-либо другим сигналом о наступивн1ем разрущении покрыти  2. Сразу же по этому сигналу прекращают дальнейшее нагружение образца / и по измерительным приборам испытательной машины производ т определение разрушающей нагрузки.izvodka short circuit electric | circuits between w-im and electrode 8. This triggers the signal circuit, audible sound, CBI70VIM or some other signal of the occurrence of the destruction of the coating 2. Immediately by this signal, the further loading of the sample is stopped and the measuring instruments of the testing machine produce determination of breaking load.

Первоуральский старотрубный завод в своем заключении отметил, что описываемый способ определени  механической прочности нетокопроводных покрытий внутренней поверхности труб прост, не требует дополнительного оборудовани  и может использоватьс  на любом заводе, имеющем лабораторию механических испытаний.The Pervouralsk old pipe plant in its conclusion noted that the described method for determining the mechanical strength of non-conductive coatings on the inner surface of pipes is simple, does not require additional equipment, and can be used in any factory having a mechanical testing laboratory.

Предмет изобретени Subject invention

Способ определени  механической прочности неэлектропроводных (эмалевых, стекл нных и т. п.) покрытий внутренней поверхности металлических труб, осуществл емый путем замыкани  электрической цепи между металлом издели  и электродом, помещенным со стороны непровод щего сло , при разрущении последнего, отличающийс  тем, что, с целью, определени  момента разрушени  покрыти  в процессе механических испытаний образца трубы, этот образец заполн ют -электропроводной жидкостью, в которую помещают указанный электрод, и увеличивают нагрузку, приложенную к трубе, до замыкани  сигнальной цепи между трубой и электродом.The method of determining the mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes, carried out by closing the electrical circuit between the metal of the product and the electrode placed on the side of the non-conductive layer, when the latter is destroyed, in that in order to determine the moment of destruction of the coating during the mechanical testing of a sample of a pipe, this sample is filled with an electrically conducting fluid into which the specified electrode is placed and increases the load, p APPENDIX to the pipe, before the signal circuit between the tube and the electrode.

v-r-r-r -T-rT- frrTiv-r-r-r -T-rT- frrTi

SU698887A 1961-02-21 1961-02-21 Method for determining mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes SU145043A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU698887A SU145043A1 (en) 1961-02-21 1961-02-21 Method for determining mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU698887A SU145043A1 (en) 1961-02-21 1961-02-21 Method for determining mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes

Publications (1)

Publication Number Publication Date
SU145043A1 true SU145043A1 (en) 1961-11-30

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SU698887A SU145043A1 (en) 1961-02-21 1961-02-21 Method for determining mechanical strength of non-conductive (enamel, glass, etc.) coatings on the inner surface of metal pipes

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2532592C1 (en) * 2013-08-20 2014-11-10 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Method for determining integrity of polymer coating, and device for its implementation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2532592C1 (en) * 2013-08-20 2014-11-10 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Method for determining integrity of polymer coating, and device for its implementation

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