Flat Tapered Head Rivet

The flat tapered head rivet is another common type of rivet. The following is a detailed introduction to the flat tapered head rivet:

Structural Features of the Flat Tapered Head Rivet

Head Shape: The head of the flat tapered head rivet is in the shape of a flat cone, consisting of a flat surface and a conical surface. This shape enables the head of the rivet to fit well with the surface of the connected part after installation. Especially in some situations where a flat surface is required, the flat tapered head rivet can provide a more aesthetically pleasing appearance. At the same time, the design of the flat tapered head also helps to guide the rivet accurately into the installation hole during the riveting process.

Shank Structure: Similar to the round head rivet, it usually has a solid cylindrical shank. This structure ensures that the rivet has sufficient strength and rigidity to withstand the tensile and shear forces during the connection process, ensuring a firm connection between the connected parts.

Material Selection of the Flat Tapered Head Rivet

Carbon Steel: It has high strength and hardness and can bear large loads. It is suitable for occasions with high requirements for connection strength in the general industrial field, such as machinery manufacturing, building structures, etc. Its cost is relatively low, and it has a high cost-performance ratio.

Stainless Steel: It has excellent corrosion resistance and oxidation resistance and is suitable for harsh environments, such as humid outdoor environments, chemical production workshops, etc. It can ensure that the rivet will not be corroded during long-term use and maintain good connection performance. It is often used in equipment and structures with high requirements for corrosion resistance.

Aluminum Alloy: It is light in weight and has a certain degree of corrosion resistance. It is often used in fields that are sensitive to weight, such as aerospace, electronic equipment manufacturing, etc. While ensuring the connection strength, it helps to reduce the overall structural weight and improve the performance and portability of the product.

Manufacturing Process of the Flat Tapered Head Rivet

Forging: First, heat the metal material to an appropriate temperature, and then process it into the approximate shape of the rivet through the forging process, including the preliminary forming of the head and the shank. During the forging process, the grains inside the metal material are refined, and the structure becomes denser, thus improving the strength and toughness of the rivet.

Machining: Carry out precise machining on the forged rivet to ensure its dimensional accuracy. This includes fine processing of the shape and size of the flat tapered head to make it meet the design requirements, as well as precise cutting of the length and diameter of the shank to ensure that all dimensions of the rivet meet relevant standards. At the same time, carry out surface grinding and polishing treatment to reduce surface roughness and improve surface quality, so that the rivet can fit better with the connected part after installation.

Heat Treatment: For some flat tapered head rivets with high performance requirements, heat treatment processes such as quenching and tempering will be carried out. Through heat treatment, the mechanical properties of the rivet, such as hardness, strength, and wear resistance, can be further improved to meet the usage requirements under different working conditions.

Application Fields of the Flat Tapered Head Rivet

Railway Transportation: In the manufacturing and maintenance of railway vehicles, flat tapered head rivets are often used to connect vehicle body structural components, seat brackets, etc. The shape of the flat tapered head can fit better with the surface of the vehicle body, ensuring the smoothness of the vehicle's appearance, and at the same time providing reliable connection strength to withstand various forces during the operation of the train.

Architectural Decoration: In the field of architectural decoration, flat tapered head rivets can be used to connect some decorative panels, such as aluminum panel curtain walls, ceilings, etc. It can make the connection between the panels closer, and at the same time, the appearance of the flat tapered head can be consistent with the decorative surface, improving the overall decorative effect.

Shipbuilding: In the structural connection of ships, flat tapered head rivets are often used to connect the outer shell plates and internal frameworks of the ship's hull. Its good corrosion resistance and connection strength can meet the usage requirements of ships in harsh marine environments, and the design of the flat tapered head helps to reduce water flow resistance.

Metal Products Processing: In the manufacturing of various metal products, such as metal cabinets, shelves, etc., flat tapered head rivets can be used to connect different components. It can provide a firm connection, and the appearance of the flat tapered head can make the products more beautiful.

Marking Method of the Flat Tapered Head Rivet

The marking of the flat tapered head rivet usually also includes information such as the product name, nominal diameter, nominal length, material, and surface treatment. For example, the marking "Rivet, Flat Tapered Head, GB/T xxx - xxxx, 6×30 - Carbon Steel, Galvanized" indicates a flat tapered head rivet with a nominal diameter of 6mm, a nominal length of 30mm, a material of carbon steel, and a surface treatment of galvanization. Among them, GB/T xxx - xxxx is the corresponding national standard number, and different types and specifications of flat tapered head rivets should be marked in accordance with the corresponding standards for easy identification and selection.

Installation Precautions of the Flat Tapered Head Rivet

Aperture and Hole Depth: During installation, it is necessary to ensure that the diameter of the installation hole on the connected part matches the nominal diameter of the rivet. Generally, the aperture is slightly larger than the diameter of the shank of the rivet to facilitate the insertion of the rivet. The hole depth should be controlled according to the size and design requirements of the rivet head. It is necessary to ensure that the head of the rivet can completely cover the installation hole, but it should not be too deep to cause the shank of the rivet to be loose in the hole, affecting the connection strength.

Riveting Tools and Pressure: Select appropriate riveting tools according to the material and specifications of the rivet, such as pneumatic riveting machines, hydraulic riveting machines, or manual rivet guns. During the riveting process, the magnitude of the pressure should be precisely controlled. If the pressure is too small, the rivet may not be able to deform sufficiently and will not be closely combined with the connected part; if the pressure is too large, the head of the rivet may be overly deformed or the shank may break, affecting the connection performance and appearance effect.

Verticality and Concentricity: When inserting the rivet into the installation hole, it is necessary to ensure that the axis of the rivet is perpendicular to the surface of the connected part and concentric with the installation hole. This can enable the rivet to be evenly stressed during the riveting process, ensure that the head can completely form a flat cone shape, and at the same time ensure that the shank is closely matched with the hole wall, improving the strength and stability of the connection.