The surface treatment technology of fasteners commonly used in industrial production and daily life has a significant impact on their performance and service life. Different surface treatment methods can bring different appearance, corrosion resistance, wear resistance and other characteristics to fasteners. Below, we will explore several common surface treatment methods for fasteners and their differences, as well as which one has a certain anti rust effect.
1、 Common surface treatment methods for fasteners
1. Galvanization: a classic choice for corrosion prevention
Galvanizing is a common surface treatment method for fasteners, which forms a protective layer of zinc on the surface of the fastener to improve its corrosion resistance and aesthetics. Galvanizing is divided into two types: hot-dip galvanizing and electroplating galvanizing. Hot dip galvanizing forms a thicker zinc layer, which is suitable for outdoor environments and occasions with high service life requirements; The zinc layer formed by electroplating zinc is relatively thin, suitable for indoor environments and occasions with low service life requirements.
2. Chrome plating: a perfect combination of aesthetics and durability
Chromium plating is a protective layer of chromium formed on the surface of fasteners through electrolytic methods to improve their hardness, wear resistance, and corrosion resistance. The chrome layer has good glossiness, making the appearance of fasteners more beautiful. However, the cost of chrome plating treatment is relatively high, and there may be issues with chromium ion release in certain special environments, so environmental protection should be taken into account when using it.
3. Oxidation treatment: modern application of traditional processes
A layer of oxide film is formed on the surface of fasteners through chemical reactions to improve their corrosion resistance and aesthetics. Oxidation treatment has low cost and is suitable for large-scale production of fasteners. However, the thickness and uniformity of the oxide film are difficult to control, which may affect the performance of fasteners.
4. Spray coating: high-tech anti-corrosion rising star
Spray coating is a method of forming a protective layer by spraying a layer of paint on the surface of fasteners. Spraying can choose different coatings according to needs to achieve different colors, glossiness, and protective performance. The spraying treatment has a moderate cost and is suitable for occasions with high requirements for the appearance of fasteners.
2、 Comparison of rust prevention effects of fasteners:
From the perspective of rust prevention effect, galvanizing and chrome plating have better rust prevention performance, especially in outdoor environments and occasions with high service life requirements. Among them, hot-dip galvanizing has a thicker zinc layer and better rust prevention effect. However, galvanizing and chrome plating are costly and may pose environmental concerns in certain special environments.
The rust prevention effect of oxidation treatment and spraying is relatively weak, and it is suitable for indoor environments and situations with low service life requirements. Among them, spraying can achieve different protective properties by selecting different coatings, so it can be adjusted to some extent according to actual needs.
In summary, the surface treatment method for fasteners needs to be balanced based on the actual usage environment and service life requirements. For outdoor environments and occasions with high requirements for service life, it is recommended to choose hot-dip galvanizing or chrome plating treatment; For indoor environments with low requirements for service life, oxidation treatment or spray treatment can be chosen. Regardless of which surface treatment method is chosen, it is important to pay attention to environmental issues and ensure that the production process complies with relevant regulations and standards.
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