Becoming Familiar With Mag Particle Testing Apparatus

Magnetic testing relates to the technique of detecting the capability of elements to attract to magnetic forces. The materials are considered ferromagnetic, which means they exhibit magnetic qualities. Mag particle testing has got wider applications in detecting cracks on industrial equipment or concrete structures. Non destructive testing just as the term suggests is conducted without disturbing the structure of concrete buildings, for example. Good examples of natural elements that are ferromagnetic include, nickel, iron and cobalt. Gadolinium, a rare metal is yet another example. All these elements are seen in groups 3-12 of the periodic table. They have a specific thing in common; these are all alloys.

Before magnetic testing is performed, testing particles are coated and colored. This is accomplished to make them visible when observed under ultraviolet light. Direct currents are subsequently transferred on the part under testing. Structural engineers or technicians then make use of mag particle testing equipment to identify areas with cracks. To identify a crack, the engineer focuses on where the particles are located. Other equipment is used to capture images of the cracked section. These are delivered to a main computer system for further extensive analysis. Such a test normally takes anywhere between 6 and 8 hours. Factories that specialize in the manufacture of steel use this method much.

Engine block cracks are difficult to detect. A minute crack might not be visible with a naked eye. The cracks may lead to overheating of an engine. Ultimately such an engine could fail completely. Dry mag particle testing will help pinpoint where such cracks are. A technician spreads powder on the engine block. By means of an electromagnetic equipment, a magnetic field is produced. Through the field's contact with the metal and testing powder, a crack is represented through abnormal patterns like shadows or lines. Cast iron blocks provide the best materials for magnetic testing.

Non destructive testing on concrete is conducted soon after the hardening of a block or beam. The tests check for strength, density as well as hardness. It is also easy to detect cracks. City engineers might use techniques such as radar to test for cracks on suspension bridges. Magnetic testing might use various techniques but the same concept is applicable. The equipment used range from hand held devices to massive machines. Besides industries, the procedure is also used by X-ray laboratories. Concrete structures are not complicated and testing can be carried out using visual aids such as cameras, night vision goggles and magnifying glasses.

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