Foundry casting surface defects detection methodsCasting after forming the surface may have many defects, such as surface cracks, surface pinholes and other naked eye difficult to find defects, it is necessary to use liquid penetrant detection. We can analyze the shape, size and distribution of the defects according to the dyeing situation. One of the more common is the coloring test, it can accurately reflect the specific circumstances of the casting defects,2, stainless steel bathroom grab bar casting foundry for coloring the concrete stepsFirst spraying the surface of the casting with a high permeability of the colored liquid, or directly will gradually wet it; until the penetrating agent penetrated into the open defect inside, the rapid wipe surface infiltration layer; and then easy to dry the agent sprayed to the casting .

On the surface, after the penetrating agent remaining in the opening defect is sucked out, the indicator agent is dyed..3, casting factory used by the penetration of the lawUnder normal circumstances, the accuracy of penetration testing will be based on the surface roughness of the material changes, once the roughness increases, then the accuracy of the penetration detection will be reduced.In addition to the above mentioned color detection, the fluorescence penetration detection is a commonly used liquid penetrant detection method, but it needs to configure the UV light irradiation observation, and detection sensitivity than coloring detection, it is also very suitable for judging casting quality .What is the common means of steel casting manufacturers quality testingPosted by lostwaxcasting2017 on February 15th, 2017The inspection of casting quality has strict procedures and methodsin steel casting manufacturers, one of which is the liquid penetrant detection, is a foundry specifically designed to check the surface of the various defects. This detection can be done in a variety of ways, but also to master the operation skills, to ensure the accuracy of detection

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