What are the tests for oil casing?

1, ultrasonic detection of ultrasonic in the detected raw material spread, the acoustic characteristics of the raw material and the transformation of the internal organization of the ultrasonic dissemination of a positive impact, after the ultrasonic level and situation affected by the detection, to understand the transformation of the function and structure of the raw material.

2, ray detection ray detection is the use of normal parts and defects through the amount of radiation difference, and the formation of film black resolution.

3, osmotic detection Osmotic detection is the use of liquid capillary action, will permeate the solid raw material surface opening defects, and then through the imaging agent will permeate the osmotic liquid suction to the surface to show the existence of defects. Penetration detection is suitable for all kinds of metal and ceramic workpiece, and the time from penetration manipulation to the weakness is relatively short, usually about half an hour, may as well detect surface fatigue, stress erosion and welding cracks, may as well directly measure the size of the crack.

4, magnetic powder detection magnetic powder detection is the use of magnetic leakage and adsorption of magnetic powder shortcomings, the formation of magnetic marks, to provide shortcomings, can detect the surface and sub-surface defects, defects nature simple discrimination, paint and electroplating surface does not affect the vividness of detection.

5, eddy current testing, eddy current testing if the main use of ferromagnetic coils of the induced eddy current in the workpiece, to analyze the internal quality of workpiece, the detection of various conductive material surface and near surface defects, common parameter control problems, testing result is difficult to define, and requirements must be conductive crack detection object, and can be tactful measurement defect length.

6, magnetic leakage testing petroleum casing magnetic leakage testing is created in the ferromagnetic raw material high permeability characteristics basically, through the measurement of ferromagnetic raw material due to shortcomings caused by the permeability change to detect the quality of oil casing in service.

7, magnetic impression detection magnetic impression detection is derived from the relationship between the physical nature of metal magnetic phenomenon and dislocation process, has many advantages such as high rate, low cost, no need to polish, has an important and ordinary use prospect in the industry.

The above is the oil casing detection method, Cangzhou Shenlong Pipe Manufacturing Co., LTD. Welcome to consult and buy.