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Types of Rivet Nails and Their Joining Techniques

As a key connection solution, rivets and their riveting technology play a fundamental and important role in the field of CNC machining. Advanced machining methods such as CNC milling and turning provide solid technical support for the precise manufacturing and efficient production of rivets.

Rivets are favored for their high reliability, strong connection force, long service life and easy operation. They can be flexibly applied to the connection needs of various materials such as aluminum alloy, structural steel and composite materials. Today, China Weimate will take you to explore the types of rivets and their riveting processes.

What are Rivets and How Do They Work?

Rivets are a basic metal product in the form of a rod-shaped structure with a cap at one end. The working principle is that when the rivet is inserted into a hole pre-punched in the connecting material, the rivet is not only highly reliable, has high connection strength, and has a long life, but is also easy to operate and use. It is widely used in various manufacturing fields. By applying pressure or striking at the outer end, the other end is deformed, thereby firmly clamping and fixing these materials.

What are the Different Types of Rivets?

Blind rivet: This type of rivet is used to pull the core head from one side through a rivet gun to achieve a tight connection between the two parts. It is particularly suitable for complex structures and scenes where only one-side operation can be performed. Common types include open flat round head and closed countersunk head.

Stamping rivets: Stamping technology is used to make rivets or connecting parts plastically deform after being stressed, thus achieving a firm connection. This method is highly efficient and suitable for environments where both sides can be operated. It is commonly used in metal structures and dissimilar metal connections.

Spin rivets: The rivet is locally pressurized by the rivet rod and continuously swung around the center, including swing riveting and radial riveting, which can achieve high-quality riveting with good stability.

Solid rivets: Due to their solid structure, they have higher shear resistance and are mostly used in metal connections that need to withstand greater shear forces.

Semi-hollow rivets: Lightweight in design, they can reduce weight while maintaining shear force bearing capacity comparable to solid rivets. They are often used to connect metal sheets to other non-metallic materials.

Open rivets: They are commonly used in home repairs and DIY projects due to their simple design and ease of installation. Their large heads and open construction make manual installation and removal easy. While it may not be the strongest, it is adequate for general repair and fixing needs.

Hollow rivets: The structure is hollow inside and is suitable for connections that do not require high shear force, such as fixing materials such as plastic, leather, and wood.

Tubular rivets: Similar to hollow rivets, but mostly used for non-load-bearing riveting between non-metallic materials, suitable for lightweight and cost-effective solutions.

Materials Used for Rivets.

There are many kinds of materials used for rivets. The following are some commonly used materials for rivets:

Aluminum: Aluminum alloy rivets are the most common type, with good corrosion resistance and lightweight, suitable for a variety of environments.

Stainless steel: Stainless steel rivets have high corrosion resistance and strength, and are particularly suitable for occasions where they need to be exposed to humid or corrosive environments for a long time.

Iron: Iron rivets are low-cost, but have relatively poor corrosion resistance and are mostly used for general connection needs.

Brass and copper: Rivets made from these materials have a unique appearance and performance, suitable for applications requiring aesthetics and a certain degree of corrosion resistance.

Carbon steel: Carbon steel rivets are subjected to surface treatments such as galvanizing to improve their corrosion resistance and aesthetics, and are widely used in various fields.

Nylon: Nylon rivets, also known as plastic rivets, are made of nylon material. Nylon material has good elasticity and memory properties, which enables nylon rivets to fit tightly during the connection process and can be assembled without additional tools. In addition, nylon rivets also have the advantages of insulation, corrosion resistance and lightweight, which are particularly suitable for the connection of electronic equipment and lightweight materials.

Advantages and Disadvantages of Using Rivets.

Advantage:

High strength: Rivet joints are tightly fixed, have high load-bearing capacity and earthquake resistance, and are not prone to fatigue. This high strength makes rivets particularly suitable for structures that need to withstand large stresses and dynamic loads, such as aircraft manufacturing, bridge construction, and heavy machinery.

Reliable connection: Rivet connection is achieved through mechanical fixing, which is relatively easy to detect and can ensure the quality and reliability of the connection. Compared with welding, rivet connection is easier to find and repair potential connection problems, which improves the safety of the overall structure.

Lightweight: Compared to welding, rivet joints often provide stronger connections with less material. This helps reduce the weight of the overall structure, which is particularly important in industries where weight control is critical.

Disadvantages:

Complex construction: The construction of rivet connection is relatively complex, requiring precise control of parameters such as rivet length, diameter, and installation angle. This increases the difficulty and cost of the installation process, especially for the connection of large structures and complex components.

A large amount of steel used: Rivet connections require a certain number of rivets to ensure the strength and reliability of the connection. This may lead to an increase in the amount of steel used in the overall structure, which in turn increases material cost and weight.

Limited firmness: Although rivet connections have high strength and reliability, they may become loose or fall off under certain extreme conditions. This requires full consideration and appropriate preventive measures during the design and installation process.

What is Riveting?

Before understanding the willow grafting technique, you need to first understand what willow grafting is?

Rivet connection is a simple mechanical connection method. It uses a metal rivet with a diameter slightly smaller than the prefabricated hole to pass the rivet through the hole of the part to be connected. Then, by applying pressure or knocking on both ends of the rivet, the rivet is partially expanded and deformed in the hole, thereby forming a rivet head at both ends. In this way, the rivet is firmly fixed in the hole, connecting multiple parts tightly together.

Willow Grafting Technology and Characteristics.

Riveting connection, as an important fastening technology, mainly includes various methods such as pull riveting, impact riveting and rotary riveting. Each method has its unique characteristics and application scenarios.

Pull Riveting:

Pull riveting is a cold riveting method driven by hand or compressed air. It uses special rivets and pneumatic riveting guns to apply force to the rivets and the connecting parts, causing them to undergo plastic deformation, thereby achieving fastening. A notable feature of pull riveting is the blind riveting function, which means that there is no need to perform a rivet operation on the reverse side of the connecting part, which is extremely convenient for reverse parts with complex structures or difficult to access.

Punch Riveting:

Punch riveting is a method of connecting parts by applying pressure to cause plastic deformation of the rivet or connecting material. This process belongs to the category of cold heading process, which does not require heat input, so it will not damage the coating on the surface of the material, nor will it produce welding spatter and deformation. The riveting process is fast and efficient, and the materials at the connection point are embedded in each other, forming a tight connection without burrs or burrs.

Span Riveting:

Spin riveting is a riveting method that gradually forms the rivet rod by applying local pressure and swinging it around the center. According to the different spin riveting paths, it can be divided into swing riveting and radial riveting. The swing riveting method is relatively simple, and the rivet head only swings and rolls in the circumferential direction; while the radial riveting method is more complicated, and the rivet head movement trajectory is plum blossom-shaped, moving in the circumferential direction and swinging and rolling in the radial direction.

In Conclusion

Rivets are key fasteners that connect two or more pieces of material and are indispensable in modern manufacturing. They are of various types and widely used. With the development of CNC machining technology, manufacturing accuracy and efficiency are constantly improving. Understanding rivet types and their riveting processes is of great significance for optimizing production and improving efficiency.