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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 detector for finished bearing

Automatic eddy current flaw detector for finished bearing

  • Classification:Automatic eddy current flaw detector for finished bearing
  • Number of visits:second
  • Date of issue:2021-04-24 10:16:30
  • 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.


因為超聲波探傷器是一種十分技術專業的儀器,并不是技術專業工作人員,沒辦法掌握這類儀器,因此 許多 違法者鉆了系統漏洞。中國一些生產廠家利用數據超聲波探傷能夠造假的特性,大張旗鼓生產制造不合格商品。


1、不在聯接攝像頭的情況下,將增益值調到較大 ,顯示屏上的波型不可以超出顯示屏的10%,假如超出,此儀器不合格。





應用不合格超聲波探傷儀的不良影響情況嚴重。因為超音波無損檢測技術全是用在質量檢驗或檢測服務,如產生安全事故乃至嚴重危害生命安全,您節約了一點錢買來的不合格儀器可能致您于十分不好的境況。大家斥責這些制假者,請提升 大家的科研開發水準,不必損人不利己,假如真產生重大安全事故,也會使大家負債累累,自陷囹圄。


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