SU1242795A1 - Method of checking continuity of dielectric coating on metal articles - Google Patents
Method of checking continuity of dielectric coating on metal articles Download PDFInfo
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- SU1242795A1 SU1242795A1 SU853847389A SU3847389A SU1242795A1 SU 1242795 A1 SU1242795 A1 SU 1242795A1 SU 853847389 A SU853847389 A SU 853847389A SU 3847389 A SU3847389 A SU 3847389A SU 1242795 A1 SU1242795 A1 SU 1242795A1
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- USSR - Soviet Union
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- electrode
- product
- defect
- discharge
- dielectric coating
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Изобретение относитс к измерительной технике и предназначено дл дефектоскопии, а именно дл опредет- лени качества защитного диэлектрического покрыти на поверхности металлических изделий, и может быть использовано в металлургии и других отрасл х промышленности при изготовлении проката, труб и других изделий с защитным покрытием. Способ контрол сплошности диэлектрического покрыти на металлическом изделии осуществл етс при перемещении : контролирз емого объекта относительно электрода разр дника, при этом объект совершает одновременно осевое и вращательное движени . Дл повьш1ени точности обнаружени дефекта наличие его контролируют по электрическому разр ду, провод щему к выгоранию электрода, изготовленного из электропровод щего эластичного материала. В месте разр да образуетс метка из продуктов сгорани материала электрода . Электрод разр дника прижимают с усилием 50-200 кПа к поверхности контролируемого, издели , с помощью пневмоцилиндра электрод и изделие соедин ют с источником высокого напр жени . 2 з.п. ф-лы, I ил. с (О СЛThe invention relates to a measurement technique and is intended for flaw detection, namely, to determine the quality of a protective dielectric coating on the surface of metal products, and can be used in metallurgy and other industries in the manufacture of rolled products, pipes and other products with a protective coating. The method of controlling the continuity of the dielectric coating on a metal product is carried out when moving: the object under test relative to the discharge electrode, and the object simultaneously performs axial and rotational movements. To increase the accuracy of defect detection, its presence is monitored by electric discharge, which leads to burnout of an electrode made of an electrically conductive elastic material. At the discharge site, a label is formed from the combustion products of the electrode material. The electrode electrode is pressed with a force of 50–200 kPa to the surface of the controlled product, the electrode and the product are connected to a high voltage source with the help of a pneumatic cylinder. 2 hp f-ly, I ill. c (O SL
Description
Изобретение относитс к измерительной технике и может быть использовано дл дефектоскопии, а именно, дл определени :-качества залщтно.го диэлектрического покрыти на поверхности металлических изделий.The invention relates to a measurement technique and can be used for defectoscopy, namely, to determine: the quality of a sheet dielectric coating on the surface of metal products.
Цель изобретени - повьппение точности контрол . The purpose of the invention is to improve the accuracy of control.
На чертеже показано устройство дл реализации предлагаемого способа.The drawing shows a device for implementing the proposed method.
Устройство содержит изделие 1 (например, стальную трубу с диэлект-- рическим покрытием), электрод 2 разр дника , пневмоцилиндр 3 и источник. 4 напр жени .The device contains product 1 (for example, a steel pipe with a dielectric coating), discharge electrode 2, pneumatic cylinder 3 and a source. 4 voltages
Способ осуществл етс следующим образом.The method is carried out as follows.
Изделие 1 перемещаетс относителвг- но электрода 2 разр дника, соверша одновременно вращательное- и осевое движени . Электрод 2 разр дника прижимают с некоторым усилием к поверхности контролируемого издели 1, нап ример, при помощи пневмоцилиндра 3. Источник 4 высокого напр жени соедин ют с контролируемым изделием 1 и электродом. 2 разр дника. При вклю-о чении высокого напр жени и отсутствий дефекта ток источника близок к нулю и при перемещении электрода разр дника относительно издели по- аерхность издели остаетс чистой. При наличии в диэлектрическом покрытии дефекта между электродом разр дника и изделием возникает разр д, привод щий к. выгоранию электрода и на поверхности издели в местеThe product 1 moves relative to the discharge electrode 2, performing simultaneously rotational and axial movements. With a certain force, the discharge electrode 2 is pressed against the surface of the test article 1, for example, by means of an air cylinder 3. A high voltage source 4 is connected to the test article 1 and the electrode. 2 discharges. When high voltage is turned on and no defect is present, the source current is close to zero and when the gage electrode moves relative to the product, the surface of the product remains clean. In the presence of a defect in the dielectric coating between the discharge electrode and the product, a discharge occurs, leading to burnout of the electrode and on the surface of the product in place
Л2427952L2427952
дефекта по вл етс п тно от осаждени в этом месте продуктов сгорани электрода.A defect appears due to the deposition of the combustion products of the electrode in this place.
Точностд) контрол дополнительно 5 повышаетс , если в процессе переме щени электрод разр дника поджимаетс с усилием 50-200 кПа, что позвол ет исключить погрещность от наличи на поверхности покрыти , неровнос- 10 тей (наплывов, впадин).The accuracy of the control is additionally increased by 5 if during the process of moving the discharge electrode is pressed with a force of 50–200 kPa, which makes it possible to eliminate the failure from the presence of a coating on the surface that is uneven (10 flows).
Точность фиксировани дефектов возрастает,до 100%.The accuracy of fixing defects increases to 100%.
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Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU853847389A SU1242795A1 (en) | 1985-01-15 | 1985-01-15 | Method of checking continuity of dielectric coating on metal articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU853847389A SU1242795A1 (en) | 1985-01-15 | 1985-01-15 | Method of checking continuity of dielectric coating on metal articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1242795A1 true SU1242795A1 (en) | 1986-07-07 |
Family
ID=21159871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU853847389A SU1242795A1 (en) | 1985-01-15 | 1985-01-15 | Method of checking continuity of dielectric coating on metal articles |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1242795A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2619825C1 (en) * | 2016-08-17 | 2017-05-18 | Валерий Николаевич Толочек | Device for determining coating continuity on sheet rolling at its deformation |
| RU2622224C1 (en) * | 2016-08-17 | 2017-06-13 | Валерий Николаевич Толочек | Method for determination of coating continuity of flats when deformed |
| RU2656292C1 (en) * | 2017-05-10 | 2018-06-04 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" | Method of control of the integrity of the dielectric coating of a metal substrate |
-
1985
- 1985-01-15 SU SU853847389A patent/SU1242795A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 993115, кл. G 01 N 29/04, 1981. Авторское свидетельство СССР № 758709, кл. G 01 N 27/02, 1978. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2619825C1 (en) * | 2016-08-17 | 2017-05-18 | Валерий Николаевич Толочек | Device for determining coating continuity on sheet rolling at its deformation |
| RU2622224C1 (en) * | 2016-08-17 | 2017-06-13 | Валерий Николаевич Толочек | Method for determination of coating continuity of flats when deformed |
| RU2656292C1 (en) * | 2017-05-10 | 2018-06-04 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Томский политехнический университет" | Method of control of the integrity of the dielectric coating of a metal substrate |
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