The following methods can be taken to determine whether the surface quality of the forged flange meets the requirements: Visual inspection: First of all, the surface of the forged flange is visually inspected to observe whether there are obvious surface defects, such as dents, cracks, bubbles, etc. At the same time, pay attention to the surface finish, whether there is dirt or oil stains and other substances. Touch inspection: Touch the surface of the forged flange with your hand to check whether there is an obvious feeling of uneven or burr, which should be smooth and uniform under normal circumstances. Visual inspection: Use magnifying glass, microscope and other tools to carefully observe the surface of the forged flange, especially the welding parts, hole edges and other positions to check whether there are small cracks, pitting, porosity and other defects. Size measurement: Use appropriate measuring tools (such as calipers, vernier calipers, gauges, etc.) to measure the size of the forged flange and compare it with the design requirements. If the size is deviated, deformed or uneven, it may affect the surface quality. The use of test liquid: the forged flange penetration detection, that is, the use of colored or colorless penetration liquid coating on the surface, in a certain period of time to observe whether there is penetration liquid into the defect, to determine whether there are cracks or holes. The above methods can be used in combination with a more comprehensive assessment of the surface quality of forged flanges meet the requirements. Of course, in the actual judgment process should consider the specific requirements and standards, and refer to the relevant industry norms and experience. If more accurate judgment is needed, more accurate testing such as non-destructive testing and material analysis can be commissioned by professional organizations.
