NDT methods crane Analysis

All parts of bridge cranes are not allowed to cracks and damage, agencies are not allowed after the trial and permanent deformation crack damage; some friction wear surface of the part,sino hoist there are strict requirements, some parts inside the equivalent defect size is also clearly defined Some specific parts also have a dedicated quality requirements, and some anti-corrosion coating thickness on the surface has also been provided.
     Refer to the specific requirements of various lifting machinery and parts technical specifications, must be based on the corresponding technical requirements for different test objects using appropriate non-destructive testing methods and testing process. Lifting the main NDT methods are: visual inspection, magnetic testing, metal magnetic memory testing, acoustic emission testing, stress-strain test and vibration test,steel crane mainly in the installation and periodic testing of applications, primarily in the manufacture of radiation detection and installation adoption, ultrasonic, magnetic particle and penetrant testing in the manufacture, installation and periodic inspection in both adoption.
     The metal magnetic memory testing, stress-strain test and vibration test is mainly used in the stress and structural evaluation and testing. Visual inspection of the main surface of the material state check (without corrosion, delamination, etc.) and metal structure geometry measurements, mainly gage measurements and visual observation.
     Ray detection, mainly used in lifting machinery manufacturing butt weld installation process for the detection of less use of equipment in use. Ultrasonic testing can fillet welding material or internal defects were detected. The bridge crane inspection of weld quality is more common method can detect cracks inside the material, white point and inclusions and other defects.
     Electromagnetic eddy current testing mainly film thickness measurement, eddy current crack detection, wire rope testing. Eddy current film thickness measurement primarily used for precise measurement of the film thickness values​​. Eddy current crack detection accuracy with conventional magnetic quite suitable for lifting machinery for rapid crack scanning. Wire Rope Testing - like magnetic flux leakage detected.hoist gantry crane Can be qualitative (broken wire or corrosion, etc.) and quantitative (number of broken wires or cross-sectional area loss) analysis.