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Cixi Jingchuang Industrial Automation Co., Ltd

Contact person: Manager Tu (Sales Manager)

Telephone: 13586643385

Contact: Deng Musong

Telephone: 13506741638

The true: 0574-63571884

Mail Box: 496613547@qq.com

Address: No. 1, Lane 8, Shuiyunpu Road, Liujia Village, Xinpu Town, Cixi City, Zhejiang Province

Web site: www.hnlqy.com


Automatic eddy current flaw detection equipment for finished bearing

Automatic eddy current flaw detection equipment for finished bearing

  • Classification:Automatic finished bearing eddy current flaw detection, hardness sorting machine
  • Number of visits:second
  • Date of issue:2021-04-24 10:17:53
  • Product overview

Main technical performance of the equipment:


1, flaw detection sensitivity: from the workpiece surface to the metal extension depth ≥0.05mm, length ≥2mm crack, defect; For the crack inside the metal has not yet extended to the surface of the workpiece, when the metal thickness between the upper edge of the crack and the surface of the workpiece is ≤0.2mm, the crack depth ≥0.2mm, length ≥2mm can be detected.


2. Leakage rate: 0%, that is, 99.99% of unqualified products are removed; Misjudgment rate ≤1%. All rejected items can be inspected once again to reduce misjudgment.


3, Detection frequency range: 100Hz~1MHz, adjustable


4, Band-pass filtering, center frequency 250~1000KHz, 8 levels


5. Gain: Gain of each channel is 0~60dB, adjustment amount is 1dB/ gear


6, phase: 0°~360°, step distance is 1°




Principle of Eddy Current Testing: Eddy current testing uses the principle of electromagnetic induction to excite the probe coil with sinusoidal current. When the probe is close to the metal surface, the alternating magnetic field around the coil generates induced current on the metal surface. For flat metal, the flow of the induced current is a concentric circle of coils, shaped like a vortex, called an eddy current. The eddy also generates a magnetic field of the same frequency, in the opposite direction of the coil's magnetic field. The loss resistance of the eddy current channel and the anti-magnetic flux generated by the eddy current are reflected back to the probe coil, changing the current magnitude and phase of the coil, that is, changing the impedance of the coil. Therefore, when the probe moves on the metal surface and encounters defects or changes in material and size, the reaction of eddy current magnetic field to the coil is different, resulting in changes in coil impedance. By measuring such changes with eddy current testing instruments, the metal surface can be identified with defects or other physical property changes. There are many factors that affect the eddy current field, such as the degree of coupling between the probe coil and the material under test, the shape and size of the material, electrical conductivity, magnetic permeability, and defects. Therefore, the problems of flaw detection, thickness measurement and sorting of metal materials can be solved by using eddy current principle


Technical parameters: flaw detection sensitivity: from the workpiece surface to the metal extending depth ≥ 0.05mm, length ≥2 mm crack, defect; When the thickness of the metal between the top edge of the crack and the surface of the workpiece is ≤ 0.2mm, the crack with a depth of ≥0.20mm and a length of ≥ 1mm can be detected.

全自動成品軸承渦流探傷設備

EM系列產品磁飽和狀態裝置是專業設計方案用以流動性場所的鋼管渦流探傷。它由磁飽和器和磁化恒流電源組成?;镜拇棚柡推饔纱呕姶啪€圈和鐵預制構件構成,容積大且凈重重,合適用在生產制造鋼管的加工廠固定不動場地應用,這類狀況下,磁飽和狀態鑄件超聲波探傷裝置不用挪動,容積和凈重均無須考慮到,因而可選用一般原材料制做,以控制成本。而對發電站、石油化工廠等應用鋼管的客戶,鋼管渦流探傷一般是在流動性當場,而不是在生產車間,為便于應用和挪動,裝置輕巧。對于此事專業設計方案了EM系列產品磁飽和狀態裝置,選用了有效的緊湊型設計方案,高導磁率原材料和用心生產加工,進一步提高了裝置的磁化高效率,使凈重僅為一般裝置的40%,容積較少一半。此外,磁化開關電源采用穩壓管恒流電源,金屬超聲波探傷儀能非常好地防止工作電壓轉變或磁化電磁線圈發燙造成電阻器增大而更改磁化電流量的弊端。

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