SU38809A1 - Electromagnetic device for detecting defects in ferromagnetic materials - Google Patents
Electromagnetic device for detecting defects in ferromagnetic materialsInfo
- Publication number
- SU38809A1 SU38809A1 SU137542A SU137542A SU38809A1 SU 38809 A1 SU38809 A1 SU 38809A1 SU 137542 A SU137542 A SU 137542A SU 137542 A SU137542 A SU 137542A SU 38809 A1 SU38809 A1 SU 38809A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- electromagnetic device
- ferromagnetic materials
- detecting defects
- defects
- indicator
- Prior art date
Links
- 230000007547 defect Effects 0.000 title description 6
- 239000003302 ferromagnetic material Substances 0.000 title 1
- 239000000463 material Substances 0.000 description 5
- 239000000523 sample Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
В технике известен р д электрических и магнитных приемов дл обнаружени скрытых дефектов в, металлических .издели х; значительное количество этих приемов основано на изменени х при наличии дефекта в образце магнитного сопротивлени в испытуемом материале, что Ёлечет за собою и изменение в распределении напр жений магнитног) пол , в котором помещен исследуемый материал; при этом наличие , местонахождение и величину скрытых пороков материала обнаруживают э 1ектроиндикаторами того или иного типа, улавливающими местные потоки рассе ни , которые образуютс непосредственно в местах расположени пороков в материале. .A number of electrical and magnetic methods for detecting hidden defects in metal products are known in the art; a significant amount of these techniques is based on changes in the presence of a defect in a sample of magnetic resistance in the test material, which is followed by a change in the distribution of the stresses of the magnetic field in which the material under study is placed; the presence, location and magnitude of hidden material defects are detected using one or another type of indicator that captures local dispersion flows that are formed directly at the locations of the defects in the material. .
Предлагаемое изобретение имеет своей целью повысить точность отсчета показаний электромагнитного прибора при определении им пороков в материале, путем применени пустотелой индукционной «катушки пр моугольной формы, создающей поле почти равномерного напр жени .The invention aims to improve the accuracy of reading the readings of an electromagnetic device when it detects flaws in a material by using an hollow induction "rectangular-shaped coil creating an almost uniform voltage field.
На чертеже фиг. 1 изображает схему предлагаемого прибора; фиг. 2-схематический вид сбоку щупа индикатора к прибору; фиг. 3 и 4-то же.In FIG. 1 depicts the scheme of the proposed device; FIG. 2-schematic side view of the gauge indicator to the device; FIG. 3 and 4 is the same.
(305)(305)
Прибор состоит из трех главных частей: пустотелой катушки 1, предназначенной дл возбуждени магнитного пол , щупа исследовани в теле пороков и индикатора 4. Вводные концы катущки 1 соединены с источником переменного тока. В цепь катущки дл регулировани пол включен реостат 6 с рубильником 8 и амперметром 5. На катущку 1 кладут испытуемое тело, например , стальной лист 7, на котором, устанавливаетс щуп 2, состо щий из сердечника в виде буквы П и двух индукционных катущео. Число витков на каждой катущке, примерно, должно быть в пределах от 400-800 в зависимости отчувствительности индикаторамикроамперметра 4. Щуп собираетс из листов трансформаторной или динамной стали. Контактные поверхности щупов должны быть не менее 1 каждый и иметь строго горизонтальную поверхность . Свободные концы от индукционных катушек подведены к водным зажимам низкой частоты усилител 3, состо щим из 2 - 3 каскадов и выпр мител . К выходным зажимам усилител The device consists of three main parts: a hollow coil 1, designed to excite a magnetic field, a probe in the body of defects and an indicator 4. The input ends of the coil 1 are connected to an alternating current source. A rheostat 6 with a knife switch 8 and an ammeter 5 is included in the circuit of the regulator. The number of turns on each roller should be approximately between 400-800 depending on the sensitivity of the microammeter 4 indicators. The probe is assembled from sheets of transformer or dynamo steel. The contact surfaces of the probes must be at least 1 each and have a strictly horizontal surface. The free ends of the induction coils are connected to the low-frequency water terminals of the amplifier 3, consisting of 2 to 3 cascades and a rectifier. To output terminals of the amplifier
подведен микроамперметр 4 чувстви1° 0,16X10тельностью , примерно.Microammeter 4 is summed up to 1 ° 0.16X10 approximately.
Внутренние концы проводников идуInner ends of the conductors go
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU137542A SU38809A1 (en) | 1933-11-15 | 1933-11-15 | Electromagnetic device for detecting defects in ferromagnetic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU137542A SU38809A1 (en) | 1933-11-15 | 1933-11-15 | Electromagnetic device for detecting defects in ferromagnetic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU38809A1 true SU38809A1 (en) | 1934-09-30 |
Family
ID=48354308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU137542A SU38809A1 (en) | 1933-11-15 | 1933-11-15 | Electromagnetic device for detecting defects in ferromagnetic materials |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU38809A1 (en) |
-
1933
- 1933-11-15 SU SU137542A patent/SU38809A1/en active
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