Fixing PCB to aluminum enclosure: galvanized rivets VS aluminum rivets

In the field of electronic manufacturing, fixing PCB to aluminum enclosure is a critical task. In this process, the choice of rivets is crucial to ensure the stability and electrical performance of the connection.
Pressursing stud include galvanized rivets and aluminum rivets, each of which has its own advantages and disadvantages and is suitable for different application.

About galvanized rivets when fixing PCB to aluminum enclosure

The main advantage of galvanized rivets is their excellent corrosion resistance. The zinc layer effectively resists erosion in humid and corrosive environments, ensuring that the rivets remain secure for a long time. In addition, galvanized rivets are generally harder and can provide a stronger holding force. However, it is important to note that zinc is a conductive material and can cause electrical problems such as short circuits if the rivet comes into contact with the circuit. Therefore, when using galvanized rivets, special attention should be paid to their installation position to avoid direct contact with the circuit.

About aluminum rivets when fixing PCB to aluminum enclosure

Aluminum rivets are made of the same material as the aluminum alloy shell, so they have good compatibility, which means that during the installation process, it is not easy to produce electrochemical reactions between the aluminum rivets and the shell, thereby reducing the risk of corrosion. Moreover, aluminum rivets can be oxidized and colored, and can be oxidized together with the shell to achieve the same color, and will not affect the appearance of the shell due to color difference. In addition, aluminum rivets have low conductivity and have less impact on the circuit, reducing the risk of electrical failure. However, the hardness of aluminum rivets is relatively low, and they may not be as strong as galvanized rivets. Therefore, when choosing aluminum rivets, it is necessary to consider their load-bearing capacity and the requirements of the use environment.

Summarization

In summary, galvanized rivets and aluminum rivets each have their own application scenarios. In situations where high corrosion resistance and strong fixing force are required, galvanized rivets may be a better choice. In situations where electrical failures need to be avoided and the fixing force requirements are not high, aluminum rivets are more suitable. In actual applications, the appropriate rivet type should be selected according to specific needs and environmental conditions to ensure a stable connection and electrical safety between the PCB board and the aluminum alloy housing.

When choosing rivets, factors such as their size, shape and installation process should also be considered. For example, rivets of different sizes are suitable for PCB board shells of different thicknesses; rivets of different shapes may have different fixing effects and installation conveniences; and the installation process directly affects the fixing quality and efficiency of the rivets. Therefore, when choosing rivets, various factors need to be considered comprehensively to achieve the best fixing effect.

Finally, it should be emphasized that no matter which rivet is selected, it is necessary to ensure that its quality is reliable and meets relevant standards. At the same time, during the installation process, the correct operating procedures should be followed to ensure that the rivets can correctly and firmly fix the PCB board to the aluminum alloy shell. Only in this way can the stable operation and long-term use of electronic equipment be ensured.

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