High Quality Rivets for Precision CNC Machining(type of casting Cash)
- source:GAENOR CNC Machining
What Makes a Quality Rivet?
Several key factors determine the quality and suitability of a rivet for CNC machining applications:
Material Strength: Aircraft-grade aluminum, titanium, and steel alloys are common rivet materials chosen for their high shear and tensile strength. The material must withstand vibration, shock, and fluctuating thermal conditions.
Precision Manufacturing: Quality rivets have an exact head-to-shank proportionality, finely controlled lengths and diameters, and smooth surface finishes. This requires expert machining and quality control.
Consistency: Top rivet suppliers have rigorous standards to ensure each batch is identical and meets specifications. Variations in geometry, weight, or strength can disrupt automated assembly.
Corrosion Resistance: Many high-performance rivets feature passivation, anodization, or zinc plating to prevent corrosion in harsh environments.
Fatigue Resistance: Repeated loads, vibration, and flexing can cause metal fatigue. Quality rivets are designed to resist fatigue failure over decades of use.
Testing and Certification: Extensive testing to industry standards like ASME, ISO, and Mil-Spec assures rivets meet the pressure, torque, and quality demands of CNC machining.
Material Options for Quality Rivets
The intended application determines the best rivet material for strength, corrosion resistance, and cost:
Aluminum: Aircraft rivets are predominantly aluminum alloys like 2024, 2117, 7050, and 7178 for their light weight and strength. The oxide film provides corrosion resistance.
Steel: Structural steel, carbon steel, and stainless steel rivets offer high shear strength. They are widely used in construction, bridges, and marine applications.
Titanium: With excellent strength-to-weight ratio and corrosion resistance, titanium rivets are popular in aerospace, motorsports, and medical implants.
Copper: Soft and machinable, copper rivets conform and deform rather than cracking under pressure. Used for boilerplates, signs, and decorative applications.
Brass: Brass alloys like C36000 and C26000 increase hardness while maintaining corrosion resistance. Brass rivets are common in electronics and appliances.
Monel: The nickel-copper alloy Monel 400 combines corrosion resistance, strength, and high temperature tolerance for demanding applications like chemical plants and submarines.
Considerations for Quality Rivet Design
Several design factors impact the strength, fit, and assembly of quality rivets:
Head Shape: Rivet heads are optimized for different applications. Countersunk rivets sit flush, universal rivets accommodate various angles, dome heads center force, and large heads distribute load.
Shank Length and Diameter: Longer and wider shanks increase shear strength. Grip length must suit the material thickness. Precision diameters enable air-tight fit.
Alloy Composition: Varying the percentages of metals like aluminum, zinc, and magnesium creates rivets with desired qualities of hardness, flexibility, and corrosion resistance for each use case.
Surface Finish: Smooth polished or anodized surfaces prevent galling and binding during rivet installation and improve fatigue life.
Tolerance: Keeping rivet dimensions like head diameter within a tight tolerance range ensures consistency for automated CNC feeders and assembly.
Quality Manufacturers for CNC Rivets
For companies using CNC machining for high-volume rivet assembly, buying from an established manufacturer is recommended for quality assurance:
Cherry Aerospace: Leading aerospace rivet manufacturer known for aircraft-grade aluminum, titanium, and steel rivets meeting AS, MS, and NAS standards.
Allfast Fastening Systems: Supplier of aerospace, military, automotive, and custom rivets. Extensive domestic CNC machining capabilities.
JBC Industrial Supply: Inventory of aluminum, steel, stainless steel, and copper rivets in imperial and metric sizes. Just-in-time delivery.
Apex Fasteners: Distributor of standard and specialty rivets for aerospace, construction, transportation, and energy. Can source rare diameters and lengths.
Falcon Fastening Solutions: Manufacturer of standard and custom solid, semi tubular, and drive rivets in aluminum, steel, stainless, and exotic alloys.
From aircraft and antennas to robots and racecars, rivets make the world go round. As an essential fastener for CNC machined parts and assemblies, quality rivets drive efficiency, precision, and reliability. By choosing rivets optimized for material strength, manufacturing consistency, corrosion resistance, and conformance to critical tolerances, manufacturers can assemble products with confidence using automated CNC processes. With sound design and qualified manufacturers, companies have access to the quality rivets needed to deliver robust, durable goods. CNC Milling CNC Machining