1. Overview
Portable LF Magnetic Flaw Detector is a new model in many of Magnetic Flaw detects productions. It combines together all the advantages of the same products broad. High pressure resistant synthetic materials made shell body, import switches and totally enclosed plug are all with advantages of oil proof, damp proof and high pressure resistant. These advantages ensure the safety, stability and reliability while using. No matter the appearance or the parameters, it can be compared with the import detectors. Our portable LF Magnetic Flaw Detector has broken the limitation that Magnetic Powder Detector can only work on the surface of metal and also solved the problem that it is hard to detect the sheet steel by ultrasonic flaw detection.The depth of detection can up to 6mm,and it has high sensitivity, for the surface defect, the probe can not contact the surface of workpiece, and you don't need demagnetization after testing.High speed detection,small volume, light weight are all the advantage of this machine. The instrument obtained the patent, and won the world youth invention honorable mention, the department progress prize in science and technology.
LF50 portable low-frequency magnetic detector AC supply, the power supply, the ~ 220 V power directly, without other instrument equipment , convenient operation, simple, light weight, easy to carry, so the instrument widely used
2、Operation Principle
The magnetic fields produced by DC can penetrate into to the internal parts,but the magnetic fields by AC are focus on the surface of the parts.The low frequency magnetic detector comprehensive advantages of Dc and Ac, the frequency of electric current and the depth of testing are inversely proportion. The low-frequency current approximately approach the depth of testing and low frequency electric current is a pulse current,.It can make the magnetic powder vibrate slightly, which can contribute to magnetic powder arranged and form the magnetic image.At the same time low frequency has the characteristics of AC, and you need not demagnetization after testing.
3、Features
(1) Magnetic field penetrate deeply, can find the artificial crack from the six mm from surface (0.1 x 2 x 30 mm).
(2) High sensitivity, type A block can complete display clearly.
(3) Magnetic powder of good swimming, easy to adsorption on the defect above.
(4) For the surface has paint, rust skin and mud workpiece, do not need to do processing, and then can detection.
(5) Don't need demagnetization after testing
(6) The instrument can be used both industrial frequency and low frequency amphibious.
(7) Industrial frequency lifting force more than 8 kg, low frequency instantaneous promotion ability more than 8 kg, current 3 A.
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Item
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Parameter
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Reamarks
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Type
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LF—50
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Maximum power
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400W
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Working voltage
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220V
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Working current
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2.4A
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Pulse current>10A
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Direct-current resistance
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8.5ohm
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Probe type
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Hoof probe
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Probe size
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220×42×196mm
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Probe weight
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3.6kg
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Test range
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50～300mm
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Test range can be adjusted
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Lift force
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8kg
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Pulse instantaneous lifting ability>8kg
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Biggest explore depth
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6mm～8mm
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Pulse frequency
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Adjustable
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Packing size
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350mm*260mm*145mm
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The whole weight
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7kg
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