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A spin-controlled yoke type permanent magnet flaw detector and a method for using it to detect workpiece flaws

A flaw detector and yoke technology, applied in the direction of material magnetic variables, etc., can solve the problems of uneven degree of magnetization, error, and weak magnetization ability on the surface of the workpiece

Active Publication Date: 2018-02-02
TIANJIN ASMI ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it also has the same problem with other similar products on the market: if Figure 5 As shown, the contact surface between the probe foot and the workpiece is in line contact, and the magnetization ability gradually weakens from the contact line to the left and right sides of the workpiece. big error

Method used

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  • A spin-controlled yoke type permanent magnet flaw detector and a method for using it to detect workpiece flaws
  • A spin-controlled yoke type permanent magnet flaw detector and a method for using it to detect workpiece flaws
  • A spin-controlled yoke type permanent magnet flaw detector and a method for using it to detect workpiece flaws

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Embodiment Construction

[0046] Such as Figure 1~4 As shown, a rotary yoke type permanent magnet flaw detector of the present invention includes: a main body 1, two adjustment brackets 21, 22, and two probe feet 31, 32.

[0047] The left and right ends of the main body 1 are respectively provided with a bracket 11, 12 downwards; the lower ends of each bracket are respectively hinged with an adjustment bracket 21, 22, and the adjustment brackets 21, 22 can adapt to workpieces of different sizes by adjusting their own angles; The lower ends of the adjustment brackets 21, 22 are respectively hinged with a probing pin 31, 32; the bottom ends of each probing pin 31, 32 are opened with a gap 41, 42, wherein the longitudinal section shape of the gap 41, 42 is determined according to the shape of the workpiece , to basically match the surface of the workpiece as the standard, specifically, it can be arc-shaped, polygonal and other curved shapes.

[0048] Such as Figure 4, As shown in 6-8, in order to real...

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Abstract

The invention relates to a rotary control yoke type permanent magnet flaw detector and a workpiece flaw detection method using the same, relating to a workpiece detection device and method. The purpose is to provide a detection device with low detection error when performing non-destructive detection on the workpiece surface. A spin-controlled yoke type permanent magnet flaw detector of the present invention comprises: a main body, two adjusting brackets, and two probing feet; the left and right ends of the main body are respectively provided with a bracket downward; the lower ends of each bracket are respectively One adjustment bracket is hinged correspondingly; the lower end of each adjustment bracket is respectively hinged with one probe foot; a gap is opened at the bottom end of each probe foot. A method for detecting workpieces of the present invention includes two steps of flaw detector parameter verification and detection implementation.

Description

technical field [0001] The invention relates to a workpiece detection device and a method for detecting workpieces using the detection device. Background technique [0002] Magnetic particle flaw detector, also known as portable flaw detector, uses thyristor as non-contact switch, low noise, long life, simple and convenient operation, strong applicability, and stable work. According to the magnetization method, it is divided into electromagnetic yoke flaw detector and rotating magnetic field flaw detector. According to the current, it is divided into AC, DC, AC and DC dual-purpose and other magnetic particle flaw detectors. The DC power supply is a rechargeable battery, which is suitable for field operation without power supply and high voltage. On-site operation of inaccessible containers, bridges, pipelines, etc., the continuous working time of a single charge can reach more than 6 hours. The AC power supply is directly input from ~220V power supply, no other equipment is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/84
Inventor 韩宝顺
Owner TIANJIN ASMI ENG TECH