What is necessary to prevent over- or under-squeezed rivets?

The selection of the correct lengths for the rivet squeeze dies is crucial, as it ensures that the rivet is compressed to the appropriate level during the riveting process. Properly sized squeeze dies allow for accurate control of the amount of pressure applied, which is essential to achieve the correct shop head formation on the rivet.

If the dies are too short or too long, it can lead to improper squeezing, resulting in either under-squeezed rivets, which may not fully deform and secure the materials together, or over-squeezed rivets, which can lead to damage of the rivet or surrounding material. This not only affects the strength and integrity of the joint but can also lead to increased maintenance and potential safety issues in the aerospace context.

By ensuring that the correct length is chosen for the squeeze dies, the mechanic can maintain consistency and reliability in the riveting process, ensuring that all rivets meet structural requirements and quality standards in assembly.