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- Add: Fuyong in shenzhen city, guangdong province town of white stone mansion west industrial zone of A4
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- Email: 136-0041-0733曾生
Why should the spring surface be cleaned?
Shenzhen Hongjie Hardware Spring Factory specializes in producing precision springs, hardware stamping, lathe parts and other small hardware manufacturers. It is located in Building A4, Baishixia Industrial Zone, Fuyong, Shenzhen. Contact number: 0755-27380299
Shenzhen Hardware Spring Factory provides you with an answer. The surface cleanliness of the spring is very important, so we should pay attention to its surface cleanliness. Now let's take a look at why we should pay attention to the cleanliness of the spring surface.
The coating and coating on the surface of spring metal should meet the requirements of coating (plating) layer being fine, uniform, and firmly bonded to the substrate. In the coating (plating) layer, the appearance of falling, bubbling, or blooming, as well as some parts without a coating layer, are mostly caused by the unclean appearance of the metal before coating (plating). Compared with solvent coatings, the surface coating treatment of spring metal using water as a solvent, such as electroplating, anodizing, phosphating, and water-based coating, is very sensitive to material pollution on the metal surface. Even single molecule layer pollutants may lead to the failure of the entire process. Therefore, the cleanliness of the material surface after pre-treatment is crucial
1. Visual and optical methods
The oil stains on the shiny metal surface can be observed with the naked eye and with the help of a magnifying glass or optical microscope. The defect is that the passive oxide film and thin oil stains on the metal surface cannot be seen.
The above methods are powerless for rough and dull metal surfaces. You can wipe the surface with clean and white cotton, cloth, or paper, and then check if it is clean to confirm the cleanliness of the metal surface
2. External tension method
Based on the influence of surface oil stains on its surface energy, the cleanliness of its surface is determined by determining whether the metal is moist in a series of test solutions with different surface tensions to recognize its surface energy.
3. Paint method
Drop the degreaser onto the metal surface and evaporate to dryness. If there are no traces, the surface of the metal is clean. If it appears as a circle, it indicates the presence of oil stains.
The coating and coating on the surface of spring metal should meet the requirements of coating (plating) layer being fine, uniform, and firmly bonded to the substrate. In the coating (plating) layer, the appearance of falling, bubbling, or blooming, as well as some parts without a coating layer, are mostly caused by the unclean appearance of the metal before coating (plating). Compared with solvent coatings, the surface coating treatment of spring metal using water as a solvent, such as electroplating, anodizing, phosphating, and water-based coating, is very sensitive to material pollution on the metal surface. Even single molecule layer pollutants may lead to the failure of the entire process. Therefore, the cleanliness of the material surface after pre-treatment is crucial
1. Visual and optical methods
The oil stains on the shiny metal surface can be observed with the naked eye and with the help of a magnifying glass or optical microscope. The defect is that the passive oxide film and thin oil stains on the metal surface cannot be seen.
The above methods are powerless for rough and dull metal surfaces. You can wipe the surface with clean and white cotton, cloth, or paper, and then check if it is clean to confirm the cleanliness of the metal surface
2. External tension method
Based on the influence of surface oil stains on its surface energy, the cleanliness of its surface is determined by determining whether the metal is moist in a series of test solutions with different surface tensions to recognize its surface energy.
3. Paint method
Drop the degreaser onto the metal surface and evaporate to dryness. If there are no traces, the surface of the metal is clean. If it appears as a circle, it indicates the presence of oil stains.
