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How does Contact Rivets geometry affect assembly and performance?

A suitable alloy with improper geometry will not give reliable results. The dimensions of the head and shank, Working-layer thickness and the shape of the surface should be checked at the same time as the carrier and the switching mechanism.

Contact rivet geometry effectTechnical analysis of SGEI

The contact head is not just one diameter

The diameter D defines the available surface and the height H affects the mass, installation space and shaping. A flat surface is not the default choice for all mechanisms, and a convex surface must also be defined with a controlled radius.

The opposite form, alignment and movement of the mechanism determine in which area the actual contact is made.

The shank must be compatible with the carrier and the riveting process

The diameter d is related to the carrier hole and the length L is related to the thickness of the assembly and the volume required to form the joint. A short or long shank can change the quality of the connection and alignment of the head.

The tolerance of the hole and part, the material of the carrier and the shape of the assembly tool should be checked along with the contact drawing.

The working layer and interface cannot be ignored

In a bimetallic or trimetallic structure, the thickness of the functional layer and the continuity of the interface are part of the design. The nominal value is not enough without defining the measurement location and acceptance criteria.

Cross-section and assembled sample verification prior to series production reduces the risk of layer displacement or poor bonding.

The next step

To convert these principles into orderable specifications, provide part drawing, switching conditions, assembly method and production quantity together.

Submit application specifications