Are Rivet Nuts Permanent?

Rivet nuts are generally not strictly permanent joints, but may be considered semi-permanent joints under certain conditions. Below is a detailed analysis of their connection characteristics, ease of disassembly, application scenario requirements, etc.:
Connection characteristics of rivet nuts
Detachable: Rivet nut are connected to the plate by pressure riveting. If necessary, the head or threaded part of the rivet nut may be broken by drilling, punching or special tool separation from the plate. For example, during equipment maintenance or component replacement, if the component to which the original rivet nut is attached is damaged, the rivet nut can be removed and replaced with a new part.
Connection strength: After riveting, riveting nut and plate form a tight connection, can withstand a certain amount of tension and shear force. In normal use, the connection can be stable, but its connection strength and abrasion resistance are slightly lower than permanent connections such as welding.
Difficulties and implications of demolition
Disassembly difficulty: The difficulty of removing rivet nuts depends on their specifications, materials and installation process. Rivet nuts with smaller specifications or softer materials are easier to remove, while rivet nuts with larger specifications or harder materials are more difficult to remove.
Impact plate: Removing the rivet nut may cause some damage to the plate. For example, drilling will lead to enlarged plate aperture, burrs at the edges, and perforation will lead to local deformation of the plate. If rivet nut need to be reinstalled, the plate may need to be repaired or re-perforated.
Application scenario Requirements for Connection Methods
Removable demand scenario: The detachability of rivet nuts detachability has a distinct advantage in the case of frequent maintenance, replacement of components, or adjustment of equipment structure. For example, electronic equipment housings, removable panels for mechanical equipment, rivet nut connections, etc., are used for subsequent maintenance and upgrades.
High strength and anti-loosening demand scenarios: For components that can withstand large loads, vibrations or shocks, such as bridge steel structures, aircraft engine parts, etc., permanent connection methods such as welding and riveting are commonly used to ensure connection strength and stability.
Comparison with permanent connection methods
Welding: The metal melts and melts at high temperatures, forming bond strength, good sealing and indestructible bonds, but changing material properties makes it difficult to remove.
Rivets: Rivets are used to connect two or more parts together with high connection strength and fatigue resistance, but rivets need to be destroyed during removal and cannot be reused.
Rivet nut connection: It combines the advantages of threaded and pressure riveting. It has a certain connection strength, easy to disassemble and reuse, but the connection strength and resistance to loosening are relatively weak.