1. Eddy current flaw detection
Eddy current flaw detection is a non-destructive testing method suitable for surface and shallow defect detection of nickel-based alloys. This method is based on the principle of eddy current induction, using alternating electromagnetic fields to generate eddy currents, and judging the defects of the object being tested by detecting the response signal of the eddy current. Eddy current flaw detection has the advantages of high sensitivity and high detection speed, but it can only detect surface and near-surface defects of materials, and is not very suitable for deep defect detection.
2. Ultrasonic flaw detection
Ultrasonic flaw detection is a commonly used non-destructive testing method suitable for in vivo defect detection of nickel-based alloys. This method uses the propagation and reflection of ultrasonic waves in materials to detect defects and structural changes inside the object being tested. Ultrasonic flaw detection has the advantages of high detection accuracy and the ability to detect deep defects, but it requires professional personnel to operate and analyze.
3. X-ray flaw detection
X-ray flaw detection is a high-precision non-destructive testing method suitable for deep defect detection of nickel-based alloys. This method uses the penetration of X-rays to transmit and absorb the object being tested, and analyzes its internal defects and structural changes. X-ray flaw detection has the advantages of high precision and the ability to detect deep defects, but it requires professional equipment and professionals to operate and analyze.
In summary, eddy current flaw detection, ultrasonic flaw detection and X-ray flaw detection are commonly used flaw detection methods for nickel-based alloys. Different methods are suitable for different defect detection, and the appropriate method should be selected for detection according to the specific situation. When using these methods for detection, attention should be paid to safe operation to ensure the accuracy and reliability of the test results.


GNEE supplies austenitic stainless steel tubes, tubes for condensers, U-shaped tubes, duplex stainless steel tubes, stainless steel rods, high-temperature alloy steel tubes, nickel-based alloy tubes, nuclear power tubes, stainless steel pipe fittings, flanges, valves, etc. The specifications are Φ6-2020×0.8-60mm, Φ16-25 and the length can reach 33m.
In terms of testing, the company is also equipped with advanced testing equipment, established a physical and chemical center, online and offline automatic eddy current flaw detection, water pressure test, underwater air tightness test, salt spray test machine, universal tensile test machine, hardness tester, CS analyzer, metallographic microscope, portable direct reading spectrometer, roughness detector, intergranular corrosion device, etc.








