SU974244A1

SU974244A1 - Magnetic pickup

Info

Publication number: SU974244A1
Application number: SU813290604A
Authority: SU
Inventors: Николай Николаевич Зацепин; Александр Петрович Гусев; Евгений Александрович Капица
Original assignee: Институт Прикладной Физики Ан Бсср
Priority date: 1981-05-12
Filing date: 1981-05-12
Publication date: 1982-11-15

Description

(54) МАГНИТНЫЙ ДАТЧИК(54) MAGNETIC SENSOR

1one

Изобретение стносшчз к неразрушазоошм методам контрсдт параметров магни него пол и качества издели и может быть использовано в машинострое ви и в черной металлургии.The invention of methods for non-destructive methods of counter-parameters of the parameters of a magnesium floor and the quality of the product can be used in machine building and ferrous metallurgy.

Известен магнитный датчик, состо щий из намагничивакхцей системы} выполненной из намагниченного магнитотвердого материала и магниточувствительных элементов , закрепл«шых на торце магнитопровода симметрично относительно его продольной оси под углом of ff 1C/4 плоо кости торца l3 A magnetic sensor is known, consisting of a magnetized system} made of a magnetized hard magnetic material and magnetically sensitive elements, attached to the end of the magnetic circuit symmetrically relative to its longitudinal axis at an angle of ff 1C / 4 flatness l3

Недостатком устройства вл етс то, ,j что оно не позвол ет прслводитъ операцию размагничивани , после щхведени контрол , что снижает его технологические возможности и приводит к необхооимости иметь дополнительное устройство 20 дл размагничивани .The disadvantage of the device is that, j does not allow for the operation of demagnetization, after tightening control, which reduces its technological capabilities and makes it necessary to have an additional device 20 for demagnetization.

Ближайшим по технической сущности.к изобретению вл етс магнитный датчик, содержащий корпус, расположенный внутриThe closest in technical essence. The invention is a magnetic sensor comprising a housing located inside

его цилиндрический магнит, намагниченный вдоль своей оси, и магниточувствительные элементы дл съема информации о качестве издели . Причем цилиндрический магнит установлен в ксараусв впо BWKMof .its cylindrical magnet, magnetized along its axis, and magnetically sensitive elements for retrieving information about the quality of the product. Moreover, a cylindrical magnet is installed in Ksarausv BWKMof.

Недостатком этого датчика вл етс низка надежность контрол прот женных дефектов, расположенных вдоль силовых линий пол намагничивани и низкие нологические возможности/св занные с необходимостью проведени операции размагничивани после контрол , что требует применени дополнительного специального устройства дл размагничивани .The disadvantage of this sensor is the low reliability of monitoring extended defects located along the power lines of the magnetization field and low nological capabilities / associated with the need to perform a demagnetize operation after the control, which requires the use of an additional special demagnetization device.

Цель изобретени - повышение надежности и расширение технологических воэ- можностей.The purpose of the invention is to increase the reliability and expansion of technological capabilities.

Claims

The goal is achieved by the fact that in a magnetic sensor that contains a housing, a shingrikM magnet magnetized along its axis, and m "1near sensitive elements, the kshgiit is made of cylindrical ssrs interconnected with alternating magnetization directions, and is mounted in the housing with the possibility of rotation around its axis, and the magician and sensitive elements are placed on the turn of the magnet. In addition to the shadow, the magnetosensitive elements installed in the junction area of adjacent sectors are oriented with the axis of maximum sensitivity at an angle otstM straight parallel to the axis of the magnet, and in the sector bisector of the sector at an angle (YY / 4. 4, 1 shows the sensor from the side of the working end), the view, fig. 2 shows the location of the magnetically sensitive elements in the junction zone of the cylindrical ring sectors; fig-E shows the location of magnetic sensitivities with. element in the eon of the bisector of one of the sectors of the magnet. The magnetic sensor includes a housing 1, a cylindrical magnet 2, consisting of: two sectors 3 and 4, located inside the housing 1, magnetically sensitive elements 5, 6 and 7, 8, a threaded probe, interconnected with alternating directions of magnetization, a cylindrical magnet 2 is magnetized along its axis 9, magnetically sensitive (; lnye elements 5 and 6 are installed in the zone of connection of cylindrical sectors 3 and 4, and. Elements 7 and 8 are in the area of the sectube 1O of the cylindrical sector 3, elements 5-8 are oriented by axis 11 maximum sensitivity perpen The total magnetic field formed by the magnet 2 and the magnetic product 12 is magnetically connected, the angle 13ct between the axis 11 of the maximum sensitivity of each of the elements 5-8 and the direct 14, the paraple axis: 9 of the magnet 2, may, depending on from the size of the gap between magnet 2 and product 12, to have the values for elements 5, in Cob Jr - OTF eleMeirroB 7 and 8. The magnetic sensor works by the following cut. The magnetic sensor is installed on the surface of the | Wek} (from izpevsh 12 (Fig. 2 3), for 5-8 (flux-probes), serves the excitation EMF, rotate TSSh1Sh1D | L1CH eskvy magnet 2 around the axis 9. and mix the sensor on the surface of the KOEttropiruyuschego product 12 product 12, part of the product adjacent to the sensor, is magnetized in the zone of the junction of the cylindrical sectors 3 and 4 of the pair of pediatrically controlled surfaces, and in the area of the bisector and the cylindrical sectors of the sectors 3 and 4 are perpendicular. Defects (in the magnetized area of the magnetic zone nor that affect magnetically sensitive elements 5-8. As a result, EMF appears at the output of magnetically sensitive elements 5-8, the magnitude of which implies Defect parameters. The magnetisation of the area of the product 12 occurs both p parallel and in normal in x, which is ensured by the sensor and contributes to the detection of random, x-oriented defects. When moving around sensor 12 product with a rotating magnet around its axis 9, an annular magnet made of cylindrical / optical sectors 3 and 4 magnetized to the right side, happened The demagnetization of the already controlled part of the product is reduced by an amplitude and a magnetic field changing in direction, which expands the technological capabilities of the device. In this case, there is no need for an additional demagnetization operation and in special grinding devices. The invention makes it possible to increase the co gstrol ratio of products by duplicating one of the methods of magnetizing u) to and from | Occur from an additional demagnetizer. Invention 1. A megaptic sensor containing., A magnetic magnet magnetized along its axis, and magnetically sensitive elements, distinguishing, so that, with a chain of reliability of control and expansion of technological capabilities, the magnet is made of cylindrical sectors interconnected alternating in the direction of magnetization, it is installed in the housing with the possibility of rotation around its axis, and the magnetically-light elements of the ditches and opening on the end of the magnet,

2.Magnetic sensor according to claim 1, that is, so that the magnetically responsive ephemets, which are mounted (the junction of adjacent cylindrical sectors in the zone are oriented by the axis of maximum sensitivity of the body, at an angle

59742446

(3 "Te114k straight, parallel to the axis of the magnet, 1. Author's certificate of the USSR

and in the zone of the sector bisector, under corner No. 717642, cl. GOL N 27 / 9O, 1980.

Lomo / - 7G / 4--2. USSR author's certificate

Sources of extrusions, No. 412543, cl. 601W 27/9O, 1971

u schmye into account when examining s (protsggsht).

F

k

"

. mmm

g

v / (

1-v

I

/ /

X //;

tt

Php 3