A variety of quality control measures can be used to locate steel pipe flaws. These inspection methods are performed by trained technicians who have the experience and knowledge necessary to accurately prep the tested materials and read the testing results. Below is a list of quality control techniques used to locate pipe defects. Visual Inspection Visual inspection is the ideal method used in many quality control programs. It is relatively easy to perform and inexpensive because specialized equipment is not necessary. Visual inspection requires appropriate lighting, good vision and a strong knowledge of what needs to be identified and corrected. Technicians can use a variety of tools, such as borescopes and magnifying glasses, to enhance their ability to detect defects. Television camera systems are often used during inspection. The inspected specimen must be free of grease, dirt, dust or other debris that may interfere with the inspection. Surface preparation can involve wiping, blast cleaning and chemical treatment. X-Ray Inspection When inspecting with X-ray and gamma rays, the film is placed opposite of the test specimen. The radiation passes through the tested material and exposes the film. The film is then processed, producing a series of images, which can be read by a trained evaluator. Ultrasonic Inspection Magnetic Particle Testing Magnetic particle inspection is mostly used for locating surface flaws, but sometimes it can also be used to detect some types of subsurface flaws. Careful preparation of the surface is required for accurate results. Dye Penetration Inspection Excess dye is removed using a method specific to the type of penetrant used. Excess penetrant must be removed properly to achieve accurate results. After this is done, a white developer is applied to the specimen. This enhances the visibility of the defects. These areas of “bleed out” identify the location and orientation of the defect, as well as the possible types of defect. A technician then uses visible light and ultraviolet radiation to inspect the test surface. Dye penetration inspection is often used to detect casting, forging and welding surface defects. These can include leaks, hairline cracks, fatigue cracks and surface porosity. Eddy Current Testing Flux Leakage Testing The post Quality Control, Inspection Methods appeared first on Bryzos. from https://bryzos.com/quality-control-inspection-methods/
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ABOUT USBryzos is the online marketplace for steel goods and accessories. That could be steel pipe, tube, coil, plate, fittings and flanges. Bryzos was founded and developed by steel industry veterans. Bryzos is the culmination of years of sales and operational experience transposed to an online environment. ArchivesNo Archives Categories |