Introduction(types of casting Evan)
- source:DAHLER CNC Machining
Rivets have been used for thousands of years in construction and manufacturing. While welding, screws, and adhesives have replaced rivets in some applications, rivets are still commonly used today. They have numerous advantages that make them the fastener of choice in many situations.
Benefits of Rivets
Rivets have several properties that make them useful across many industries and applications:
- High strength-to-weight ratio - Rivets are very strong for their small size and weight. The materials and design of the rivet shank and head provide excellent load-bearing capability.
- Vibration resistance - The flattened shank creates a tight clamping force that can withstand vibration better than threaded fasteners. Rivets are commonly used in automotive, aerospace and machinery applications where vibration is a concern.
- Easy installation - Rivet holes can be quickly drilled with standard tools. Installation only requires access to one side of a joint, unlike bolts or screws. Minimal skill and training is needed for riveting.
- Permanent fastening - Properly installed rivets create a permanent, non-reusable joint. This can be beneficial for tamper resistance or when joint movement needs to be minimized.
- Variety of materials - Rivets come in a range of materials including aluminum, steel, stainless steel, copper, magnesium, titanium and more. Different materials provide corrosion resistance or withstand high temps.
- Cost effectiveness - Rivets are inexpensive relative to other permanent fastening methods. Automated riveting systems also allow for efficient high-volume production.
These unique advantages make rivets suitable for numerous applications. Some of the most common uses for rivets are outlined below.
Uses for Rivets
Aircraft and Aerospace
Rivets are extensively used in aircraft assembly. Aluminum and titanium rivets are the preferred choice due to their high strength-to-weight ratio. Rivets create strong, permanent joints between fuselage skins, stringers, ribs and frames. They also assemble wings, engine nacelles and flight control surfaces. Rivets handle vibration extremely well, critical for aircraft endurance. Installation only requires one-sided access, simplifying assembly of the complex 3D structures. Aerospace rivets must withstand extreme conditions of temperature, altitude pressure, corrosion and fatigue over aircraft lifetimes. Strict manufacturing and quality control ensures aerospace rivets meet stringent industry standards.
Rivets are ubiquitous in automotive manufacturing and repair. The chassis, exterior body panels, doors, hood and interior components all use rivets for assembly. Steel and aluminum rivets are common. For visible exterior panels, specialty rivets with countersunk heads provide a smooth surface finish after painting. Rivets provide high shear strength for joints between body panels, allowing the car body to maintain structural integrity in a crash. Vibration resistance makes rivets well-suited for engine components, drive train and suspension parts. Automotive plant production lines use automated rivet installation for mass production efficiency. For auto body repair, specialty blind rivets allow damaged panels to be replaced quickly.
Industrial equipment has extensive riveting. Heavy machinery uses steel rivets in frames, housings, booms and tools. Mining draglines, excavators, bulldozers and dump trucks rely on rivets for durability in abrasive, dirty conditions. Food processing equipment applies stainless steel rivets for joints that must withstand sanitizing. Rivets assemble cranes, conveyors, presses and more. Large rivets are installed red hot then upset to form the shop head. Field maintenance uses blind rivets for onsite repairs. Vibration resistance gives rivets an advantage over threaded fasteners in industrial environments. Riveting also better handles alignment issues caused by manufacturing tolerances in large assemblies.
Railway and Mass Transit
Rivets play an integral role in rail equipment from locomotives to stations. Applications include car body assembly, bogie (truck) frames, coupler attachments and interior fittings. Corrosion resistant stainless steel rivets withstand moisture, chemicals and dirty conditions. High strength steel rivets assemble robust freight car bodies. Magnesium rivets provide good vibration damping on freight car hoppers. Riveted construction still dominates modern metro subway car and electric commuter train design for safety and durability. Stainless steel is applied for washability in underground dusty tunnels. Rivets are also used extensively in station platform canopies, railings, beams and column brackets.
Steel rivets have an extensive history in bridge construction. Early iron and steel bridges pioneered structural riveted connections. Rivets provided high strength as bridge spans increased. They also accommodated complex forces and multi-axis stresses. Riveting handles field assembly and fit-up issues. Historically, large steel rivets were heated and driven by hand in teams. Modern bridge construction uses high-strength, corrosion-resistant structural rivets. While welding is now common, rivets are still used when joint stiffness and fatigue resistance is critical. Truss bridges, arch bridges, viaducts, steel beam spans and suspension cable anchorages all incorporate rivets.
Marine applications were one of the first uses for rivets. Wooden boats applied iron and copper rivets, followed by steel fasteners. Ocean-going vessels use steel rivets measured in inches rather than millimeters. Marine rivets must resist corrosion from saltwater. Countersunk head rivets provide a flush outer surface important for hydrodynamic hull shaping. Rivets assemble sheet metal hull plates, interior decks and bulkheads, masts and railings. Blind rivets allow accessibility to only one side of a joint, important in confined bilges and tanks. Marine inspection ensures ship rivets meet stringent reliability standards.
Highly engineered pressure vessels often rely on specialty rivets. These vessels must safely contain pressurized fluids and materials under extreme temperatures or acidic/corrosive conditions. Exotic alloys like nickel copper, titanium, magnesium, Inconel and Monel meet stringent strength and corrosion requirements. Tanks, heat exchangers, boilers, valves, chemical reactors and pipelines all utilize precision rivets. Applications range from nuclear submarines to offshore oil platforms to industrial plants. Strict inspection verifies correct materials and rivet installation. Pressure vessel rivets represent an extremely demanding use case.
Modern electronics production utilizes small precision rivets. Consumer devices like cellphones, tablets, computers and appliances rely on micro-rivets. Miniaturized rivets assemble tiny, dense circuit boards and components. Micro-rivets also fasten casings and internal parts on scales matching the electronics. These tiny fasteners must provide clamp load without damaging fragile silicon chips or surface mount devices during installation. Stainless steel, aluminum and specialty polymers are common materials. Sophisticated robotic assembly systems precisely meter rivet placement and setting force. Medical devices, aerospace avionics, and automotive electronics also employ micro-rivets during assembly.
Building and Construction
The construction industry takes advantage of rivet versatility across many applications. Self-drilling rivets quickly install sheet metal roofing, siding, ducting, pipes, studs and more. Structural steel rivets assemble commercial buildings, warehouses and industrial facilities. Countersunk rivets provide flat exterior finishes. Blind rivets facilitate installation where access is limited. Stainless steel resists corrosion in coastal marine environments. Copper rivets withstand weather exposure on stonework and masonry. Aluminum rivets offer light weight for walls, canopies and awnings. Construction rivets are available in a range of sizes, strengths and materials tailored for diverse needs.
Rivets have proven their usefulness through millennia of applications. From ancient shipbuilding to tomorrow’s electric hypercar, rivets provide reliable fastening across industries. Their high strength, vibration resistance, installation flexibility and cost effectiveness make rivets the ideal choice in many situations. Ongoing rivet innovations expand options for new demanding environments. Rivets will continue playing a key role in assembly and construction as modern manufacturing continues to evolve. Their versatility ensures rivets remain a popular option when design requirements demand a permanent, reliable fastener. CNC Milling CNC Machining