In modern industrial production, the quality and reliability of materials are of paramount importance. As an efficient, sensitive and non-destructive detection method, eddy current flaw detection technology is widely used in the quality control process of a variety of metal materials. This technology is able to detect small defects such as cracks, inclusions, porosity, etc., both on and within the material, thus ensuring the performance and safety of the product.
1. The working principle of eddy current flaw detector: Eddy current flaw detector excites the eddy current in the measured material by generating an alternating magnetic field. When these eddy currents encounter material defects, abnormal signals are generated, and through the analysis of these signals, it is possible to determine whether there is a defect in the material, as well as the nature and location of the defect.
2. Applicable material types:
1. Ferromagnetic materials: such as carbon steel, alloy steel, cast iron, etc. Due to the high permeability of ferromagnetic materials, eddy current testing is particularly sensitive to surface and near-surface defects in these materials.
2. Non-ferromagnetic materials: such as aluminum alloy, copper alloy, titanium alloy, etc. These materials have good electrical conductivity and are suitable for the detection of deep defects using eddy current flaw detection technology.
3. Composite metal materials: including multi-layer metal plates, metal cladding materials, etc. Eddy current testing can effectively detect defects such as delamination and debonding in composite metal materials.
4. Pipes and bars: In the production line of pipes and bars, eddy current flaw detectors are often used for first-class detection to find and reject unqualified products in real time.
5. Welded joints: Eddy current flaw detection technology can detect discontinuities near welds, such as unfused, hot cracks, etc.
3. Application field: Eddy current flaw detector plays an important role in many fields, such as the regular inspection of equipment and components in aerospace, automobile manufacturing, petrochemical, electric power, nuclear energy and other industries, as well as quality control in the research and development of new materials.
Eddy current flaw detectors have become an important tool for material defect detection due to their non-contact, high efficiency and high sensitivity. With the continuous progress of technology, the function of eddy current flaw detector is becoming more and more powerful, and the application range is also expanding, which provides a strong guarantee for the safe production of all walks of life.
Eddy current flaw detector is an indispensable equipment in industrial non-destructive testing, which can adapt to the needs of many types of metal material testing. By accurately detecting defects, eddy current flaw detectors help improve product quality, extend equipment life, and ensure industrial safety, making them extremely valuable for modern manufacturing.