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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 big roller eddy current flaw detection and sorting machine

Automatic big roller eddy current flaw detection and sorting machine

  • Classification:Automatic big roller eddy current flaw detection and sorting machine
  • Number of visits:second
  • Date of issue:2021-04-24 10:15:12
  • Product overview

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.


全自動大滾子渦流探傷分選機

渦流探傷儀技術性機械零件表面有無裂紋等缺陷很重要,以其會造成比較嚴重的產品質量問題。為確保生產加工零件的安全系數和可信性,渦流探傷探頭只靠估測外型檢查是不可以符合要求的,進而對工件生產加工面的檢驗規定增加了。因而,生產流水線要做到需要的品質,選用非接觸測量方法、在短期內內對所生產制造零件開展檢驗的悉數監測系統是不能缺乏的。利用電導體的渦流開展各種各樣檢驗,是一種電流的磁效應檢查,其典型性運用是渦流探傷檢測。這兒概述對有導電率的工件表面裂痕等缺陷的檢查。

渦流的特點并以觸碰方法對帶磁體和導電性非磁性體(鋁合金型材、不銹鋼板、銅等)材料的工件開展探傷檢測。鋼軌渦流探傷儀除裂痕之外,利用該渦流還可對下邊各種各樣缺陷開展探傷檢測:表面的鍛造裂縫和孔、切削燙傷、刮痕、黑皮膚殘余、部分材料轉變或存有異(材料歸類檢查)及部分強度轉變(原材料構成和構造的檢查)等。


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