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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 hub bearing

Automatic eddy current flaw detector for hub bearing

  • Classification:Automatic eddy current flaw detector for hub bearing
  • Number of visits:second
  • Date of issue:2021-04-24 10:16:10
  • Product overview

Key performance index


1, flaw detection sensitivity: from the workpiece surface to the metal extension depth ≥ 0.06mm, length ≥ 2mm 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 depth ≥0.20mm and length ≥ 2mm can be detected.


2. Leakage rate: 0%, that is, unqualified products are eliminated 100%; Misjudgment rate (wrongly judging qualified products as unqualified products)≤1%. All rejected items can be inspected once again to reduce misjudgment.


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


4, Band-pass filtering, center frequency 250 ~ 1 000 KHz, 8 levels.


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


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


7. Detection time: 6 seconds




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

技術參數:探傷靈敏度:由工件表面向金屬內延伸深度≥0.05 mm,長度≥2 mm的裂紋、缺陷;對于金屬內部尚未延展到工件表面的裂紋,當裂紋上緣與工件表面之間的金屬厚度≤0.2 mm時,深度≥0.20mm,長度≥1 mm的裂紋可以檢出。


全自動輪轂軸承渦流探傷機

渦流探傷儀無損檢測技術性是一種不在毀壞待檢目標的前提條件下測量、點評物件內部或表面物理學和物理性能及各種缺點和別的性能參數的綜合型無損檢測技術。其運用范疇伴隨著科學與生產制造的發展趨勢逐步普遍。在汽車工業領域中渦流探傷儀無損檢測的運用十分普遍。很多汽車零部件,如制動系統鼓、制動盤、電動機軸、轉向拉桿等重要的安全性件,假如零部件表面出現微小裂痕,或是內部有缺陷,在長期性交替變化地應力的功效下,渦流探傷裂痕會從表面慢慢向內發展趨勢,或是超聲波探傷儀報價由內向型外拓寬,從而造成安全風險。因而,所述零部件在生產加工全過程中,務必歷經一系列的渦流探傷儀無損檢測。常見的汽車零部件無損檢測有射線檢測、超聲波檢測、磁感應渦流檢測、磁粉檢測和滲透檢測,亦稱五大探傷檢測方式。

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