Introduction(316 vs 316l Stanley)
- source:CLAREY CNC Machining
Key Uses of Rivets
Aircraft and Aerospace Applications
One of the most critical uses of rivets is in the aerospace industry for building airplanes, rockets, and satellites. Rivets are the preferred fastener in aircraft construction because of their high strength-to-weight ratio. The rivets used in aircraft are specially designed with heads that are flush with the surface to reduce drag. They are also made from lightweight metals like aluminum, titanium, and nickel alloys. Rivets keep the aluminum sheets of the aircraft fuselage firmly connected while maintaining a smooth aerodynamic outer surface. They are also extensively used in the wings, control surfaces, and landing gear assemblies.
The shipbuilding industry relies heavily on rivets to assemble the sheet metal hulls and superstructures of ships and boats. Steel rivets are extensively used to join the steel plates that form the hull. The rivets are carefully spaced to ensure watertight integrity. They can join plates of different thicknesses and withstand the enormous forces exerted by the sea. Stainless steel and aluminum rivets are preferred for superstructures above the waterline. Rivets are also used to assemble metal components in the interiors of ships.
Rivets play a vital role in bridge construction to connect the steel girders and truss elements. The many complex connections in bridges subject the rivets to tension, compression, and shear forces. High strength structural rivets are usually used to withstand the heavy loads. Riveting assembles built-up sections efficiently compared to welding. Rivets allow for more flexibility and vibration absorption than welds. Pre-stressed rivets are also used for connecting bridge elements together and introducing compression to counteract tensile forces.
Building and Construction
The construction industry utilizes rivets for fastening steel framing and joining structural elements. Steel rivets are ideal for assembling prefabricated sections, metal decks, built-up beams, bracing, and columns. Rivets provide a dependable and durable connection between structural steel members. They are a preferred alternative to welding when on-site welding is impractical. Self-drilling and self-piercing rivets are also increasingly used for joining light gauge steel and sheet metal framing.
Miniature rivets play a vital role in electronics manufacturing for assembling computers, mobile devices, appliances, and other products. The small aluminum or steel rivets are installed by specialized automated riveting machines and robotics. They provide robust mechanical attachments for covers, chassis, brackets, and other enclosures with high shear and tensile strength. Rivets allow serviceability not possible with adhesives or welding. Press-fit rivets that lock into metal sleeves are also common in electronics for attaching components to printed circuit boards.
Automotive factories make extensive use of rivets for assembling body panels, frames, chassis, interiors, and engines. Self-piercing rivets efficiently join different types of materials like steel, aluminum alloys, plastics, and composites while minimizing waste. Robotic riveting systems can install hundreds of rivets per minute precisely. Rivets allow flexibility in the relative movement of automotive components and can be used selectively with adhesives. Specialty rivets like multi-grip and flowform rivets produce solid and flush connections between panels.
Appliances and Consumer Products
The manufacture of metal appliances relies heavily on rivets for economical and efficient joining. Housings, covers, handles, brackets, bases, and frames of appliances are commonly assembled with rivets. Aluminum, steel, and stainless steel rivets provide durable mechanical attachments and 360-degree clamping action. Robotics and automated tooling allow rapid riveting in large production volumes. Rivets also join sheet metal fabrications in furniture, shelving, storage products, and POS displays. Press-fit rivets are ideal for attaching legs and features to sheet metal.
Key Benefits of Rivets
High Strength-to-Weight Ratio
The clamping force and mechanical interlock of rivets produce joints with excellent tensile strength for the mass of the fastener. Rivets made from aluminum, titanium, and other alloys have very favorable strength-to-weight characteristics. This makes rivets ideal for weight-sensitive applications like aircraft.
Vibration and Fatigue Resistance
Properly installed rivets maintain constant clamping force which prevents loosening. This makes riveted joints resistant to vibration, fatigue loads, and shock impacts. Rivets have high pull-out strength and shear resistance despite vibration.
Many rivets are made from corrosion-resistant materials or protected by platings and finishes. Stainless steel, aluminum, nickel, and titanium rivets perform well in harsh environments. Zinc and cadmium coatings provide good corrosion protection for steel rivets. This versatility makes rivets suitable for outdoor structures and marine applications.
The installation of rivets is fast, simple, and economical compared to other fastening methods. Minimal surface preparation is required for riveting. Automated riveting with specialty tools improves productivity and quality. Riveting also has lower equipment costs than welding and lower material costs than nuts and bolts. This makes rivets ideal for mass production.
Reliability and Inspection
The visible head of installed rivets allows easy inspection to confirm proper installation. Split rivets confirm visual inspection by the break-off of the mandrel. The reliability, consistency, and inspectability of rivets make them a trusted fastening method in critical applications.
In contrast to loud hammering, modern rivet tools quietly swage rivets into place. Riveted joints also dampen transmitted noise better than rigid welds which transmit noise readily. Rivets help reduce noise transmission in aircraft, appliances, vehicles, and building panels.
Allows Dissimilar Material Joining
Rivets can join combinations of different sheet metals, plastics, composites, and other materials. This promotes design flexibility not possible by welding or adhesives alone. Rivets only require properly aligned holes rather than extensive surface preparation.
Rivets have proven their versatile usefulness from ancient shipbuilding to cutting-edge aircraft design. Improved specialty rivets and automated installation make rivets more useful than ever. Rivets will continue playing a key role across manufacturing, construction, and product design due to their simple concept, light weight, and reliable performance. The many varieties, styles, and materials of rivets accommodate vast fastening needs. No other mechanical fastener matches the cost-effectiveness, strength, and reliability of rivets in key industrial applications. CNC Milling