Rivets are commonly used as small components in our daily lives. They are mainly used to connect two parts or components with through-holes, where one end has a cap-like object and the other end is a nail-shaped object. In riveting, the rivet deforms or forms an interference fit to connect the parts together. There are many types of rivets, including R-type rivets, fan rivets, core-pulling rivets (impact rivets), tree rivets, half-round head rivets, flat head rivets, semi-hollow rivets, solid rivets, countersunk rivets, and more.
In the industrial use of large-scale fans, rivets are mainly used for the connection between the blades and the blade handles. For example, Amberma industrial energy-saving fans use 24 rivets to fix each blade to the blade handle, reducing the shear forces on each blade. This type of riveting commonly uses new core-pulling rivets as fasteners. Core-pulling rivets make various structural components compact, lightweight, aesthetically pleasing, easy to use, and cost-effective. Therefore, they are widely applied in industries such as aviation, shipbuilding, automobile manufacturing, machinery, household appliances, electrical instrumentation, building decoration, luggage, and container manufacturing.
Core-pulling rivets are a type of rivet used for single-sided riveting. They require dedicated tools such as rivet guns (manual, electric, or pneumatic) for installation. These rivets are particularly suitable for situations where it is inconvenient to use ordinary rivets that require riveting from both sides. Among them, the open-ended flat head core-pulling rivet is the most widely used, the countersunk core-pulling rivet is suitable for applications requiring a smooth riveting appearance, and the sealed core-pulling rivet is suitable for high load-bearing and sealing requirements.
The international standard for core-pulling rivets is DIN7337, which has many classifications in terms of performance, specifications, etc. Whether used in industrial large-scale fans or other mechanical and electrical equipment, it is important to carefully check and compare, understand the purpose, familiarize oneself with the usage, and choose the appropriate matching rivets.