What is a rivet?
A rivet is a nail like object used to connect two components (or parts), with a through hole and a cover at one end. During riveting, the riveted components are connected through self deformation or interference.
Types and uses of rivets:
1. Fan rivets are specifically designed for manual installation. It can be pulled out of a hole in the panel or chassis. It is made of elastic materials, with good toughness, ingenious design, and elastic functions. It is not easy to slide out after being pulled in with corresponding holes. Fan rivets are mainly used to fix between the fan, heat sink, and chip of the electronic computer chassis, and have the function of vibration prevention and noise reduction.
The pop rivet is a new type of riveting fastener that is very convenient for riveting. Punch rivets can exhibit their unique advantages in relatively narrow spaces, or in environments where there is no rivet gun or they cannot be used. Using a hammer and other objects to tap the nail core on one side can successfully rivet two or more connected components. According to the shape of the edge of the nail cap, core rivets can be divided into flat head core rivets and countersunk head core rivets.
The types of pull rivets can be roughly divided into open, closed, double cylinder, and single cylinder series.
4. Countersunk blind rivets: riveted parts with smooth and beautiful surfaces after riveting.
"Double cylinder rivet: During riveting, the rivet core pulls the ends of the rivet body into double cylinders, clamping two structural components to be riveted, reducing the pressure on the surface of the structural components.". It is mainly used for riveting various thin structural components in industries such as automobiles, ships, construction, machinery, and electronics.
6. Cap side core rivet: Compared to ordinary core rivets, the diameter of aluminum cap is significantly increased. When riveting joints, the rivet contact area is larger, the support surface is stronger, the torque strength is enhanced, and higher radial tension is withstood. Industry: Suitable for fastening soft and fragile surface materials and super holes, increasing the brim diameter, and providing special protection for soft materials.
Closed core rivet: Specially designed for the riveted core shaft head, it is very suitable for various waterproof requirements. High shear force, anti vibration, high pressure resistance.
8. All aluminum core rivets: The rivet body also uses high-quality aluminum wire, which is beautiful and durable after riveting, without rust. Compared to ordinary core rivets, rivets have a lower riveting strength and are suitable for connectors with softer materials.
Open stainless steel rivet: This rivet is the first choice for high tensile strength and corrosion resistance.
10. Flat head rivet: mainly used for riveting metal plates or non-metallic materials such as leather, canvas, wood, etc.
11. Half hollow rivet: mainly used for riveting occasions with low load.
12. Hollow rivet: light weight, weak rivet head, used for riveting non-metallic materials, with small load.
Precautions for rivet purchase:
When inspecting the finished core pulling rivet: consider the rivet diameter, rivet rod length, rivet cap thickness and diameter, total length of rivet core, exposed size of rivet core, rivet cap size, and assembly outer diameter. In actual inspection, it is possible to measure the weak links of the product, such as tensile strength, shear strength, and pin core links.
The key is to pay attention to the rivets. The riveting is not enough, and whether the riveting is in place; Or because the rivet core cap is too large, the rivet tip cannot be pulled down; There is also a jump head, which means that the tensile breaking force of the nail core is too low or the fracture size is too fine.
3. Rivet material: aluminum, iron, stainless steel, alloy, etc.
The total thickness of the workpiece is generally 45-65 points of the rivet length, and it is recommended not to exceed 60 points. In addition, it is also troublesome to have a short work length, and the recommended standard is 50-60 points. The rivet length is too long, the rivet pier is too large, and the rivet rod is easy to bend; The rivet length is too short, the pier thickness is insufficient, and the nail head formation is incomplete, affecting the strength and tightness. The length of the rivet is too long or too short, and only an appropriate length can achieve a good riveting effect.