Screw shopping mall---one-stop service
Language
Screw shopping mall---one-stop service
Rivets are mechanical fasteners used to permanently join two or more pieces of material, typically metal or plastic. They work by deforming one end of the rivet after insertion to hold the materials together tightly. The principle behind rivets is based on creating a strong mechanical bond through compression and expansion. Here's how rivets work and the principle behind them:
1. Structure of a Rivet
Head: The pre-formed end of the rivet, which remains visible after installation. The shape can vary (round, flat, countersunk, etc.).
Shank: The cylindrical part of the rivet that passes through the materials being joined.
Tail (Mandrel): The part of the rivet that is deformed during installation to create a second "head" on the opposite side, securing the materials together.
2. Working Principle of Rivets
The fundamental principle of rivets involves the following steps:
Inserting the Rivet:A hole is drilled or punched through the materials that need to be joined.
The rivet is inserted through the hole, with the head resting on one side of the materials and the shank passing through to the other side.
Deforming the Tail:A specialized tool, such as a hammer for solid rivets or a rivet gun for blind rivets, is used to deform the tail end of the rivet.
The deformation creates a "second head" or "bucktail" on the opposite side of the rivet, locking the materials together.
Clamping and Compression:The deformation of the rivet tail causes the materials to be clamped between the original head and the newly formed tail, creating a permanent joint.
The rivet expands slightly within the hole, which increases the friction and ensures a tight fit.
Solid Joint:Once installed, the rivet holds the materials together securely, and the joint can withstand shear forces (forces parallel to the surface) and tensile forces (forces trying to pull the materials apart).
3. Types of Rivets
Rivets come in different types, each working on the same fundamental principle but suited for different applications:
Solid Rivets: Made of a single piece of metal. They are deformed by a hammer or rivet gun, creating a permanent joint. Used in applications like aircraft and shipbuilding.
Blind Rivets (Pop Rivets): Can be installed from one side of the material, making them useful in applications where access to both sides is limited. They have a mandrel inside that is pulled during installation, causing the shank to expand and form the tail.
Tubular Rivets: Have a hollow shank that is deformed during installation. Common in leather goods or light-duty applications.
Split Rivets: Have a split in the tail that flares out during installation, securing the materials.
4. Advantages of Rivets
Permanent Joint: Once installed, rivets create a permanent, tamper-resistant joint.
High Strength: Rivets can handle both shear and tensile loads, making them suitable for high-strength applications.
Vibration Resistance: Riveted joints are less likely to loosen under vibration compared to screws or bolts.
Simple Installation: Especially in the case of blind rivets, installation is relatively simple and requires access to only one side of the material.
5. Applications of Rivets
Aerospace: Rivets are widely used in aircraft construction due to their strength and reliability. Solid rivets, in particular, are commonly used for joining metal sheets.
Shipbuilding: Rivets have been historically used in the construction of ships and bridges.
Automotive: Rivets are used in various automotive applications, especially in areas where permanent fastening is needed.
Construction: In steel structures, rivets are used to join steel plates and beams.
Electronics and Furniture: Smaller rivets are used in the assembly of electronic devices, furniture, and household appliances.
6. Key Factors for Riveting
Material Compatibility: The rivet material should be compatible with the materials being joined to avoid galvanic corrosion (e.g., aluminum rivets for aluminum sheets).
Hole Size: The hole diameter must match the rivet diameter for a tight fit. If the hole is too large, the joint will be weak.
Access to Materials: In blind riveting, only one side of the material needs to be accessible, whereas solid rivets require access to both sides for installation.
Wuxi Zhuocheng Mechanical Components Co., Ltd. is established in 1990, and one group of manufacturing and selling professional fastener
Copyright © 2021 Wuxi Zhuocheng Mechanical Components Co.,Ltd. - All Rights Reserved.
