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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 vane ring eddy current flaw detector

Automatic vane ring eddy current flaw detector

  • Classification:Automatic vane ring eddy current flaw detection and size sorting machine
  • Number of visits:second
  • Date of issue:2021-04-24 10:21:50
  • Product overview

Main technical parameters


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 which has not extended to the surface of the workpiece, when the metal thickness between the crack upper edge and the surface of the workpiece is ≤0.2mm, the crack depth ≥0.2mm, the crack 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 250~100KHz, 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.


Automatic vane ring eddy current flaw detector

渦流探傷儀的渦流檢驗是很多NDT(無損檢測技術)方式之一,它運用“電磁場理論”基本理論做為導體檢驗的基本。渦流的造成來源于一種稱為電流的磁效應的狀況。當將交流電流釋放到導體,比如銅輸電線處時,磁場將在導體內和圍繞導體的室內空間內造成磁場。渦流便是磁感應造成的電流量,渦流探傷儀在一個環城路中流動性。往往稱為“渦流”,是由于它與液體或汽體圍繞阻礙物在環城路中流動性的方式是一樣的。假如將一個導體放進該轉變的磁場中,渦流將在哪個導體中造成,而渦流也會造成自身的磁場,該磁場伴隨著交流電路升高而擴大,產品尺寸檢測伴隨著交流電路減少而圓化。因而渦流探傷儀當導體表面或近表面出現缺陷或精 確測量金屬復合材料的一些特性產生變化時,將危害到渦流的抗壓強度和遍布,進而大家就可以根據一起來檢驗渦流的轉變狀況,從而能夠間接性的了解個題內部缺陷的存有及金屬材料特性是不是發生了轉變。渦流探傷儀常見于軍用\航空公司\鐵路線\廠礦企業郊外或當場應用,是具備智能、應用性強、性能卓越/價格對比特性的儀器設備,渦流探傷儀集很多年生產制造渦流檢查儀之工作經驗,渦流探傷儀廠家考慮各種客戶的必須??蓮V泛運用于各種稀有金屬、輕金屬管、棒、線、絲、鋁型材的線上、線下探傷檢測。對金屬軟管、棒、線、絲、鋁型材的缺陷,如表面裂痕、暗縫、焊瘤和張口裂痕等缺陷均具備較高的檢驗敏感度。

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