Welding and compression rivet nuts have their own advan […]
Welding and compression rivet nuts have their own advantages and disadvantages, such as welding, relatively high strength, etc., and compression rivet nuts are simple to install and can be disassembled for easy installation and transportation.
Welding is equivalent to turning two separate pieces into a whole, melting the metal at high temperature, mixing them together, and then cooling. An alloy will be added in the middle, and the internal force is the role of molecular force. The strength is generally greater than the strength of the parent body.
Rivet nuts are generally used for thin-walled plates and are embedded by pressure. The contact surface is contact stress, which means that the strength depends on the connection piece and the parent body. The nut is subject to shear stress, so if the strength of the nut is not enough, it will be sheared. Shear failure, and the strength of the parent body is not enough, the plastic crushing deformation will fail,
These two types have their own advantages and disadvantages, such as welding, relatively high strength, wide range of use, thin and thick, but due to high temperature will cause deformation of the connected parts, and can not be disassembled, and some active metals can not be welded by the usual methods, such as aluminum , Magnesium, etc., require shielding gas or argon arc welding, require processing technology and precision, and the pressure riveting nut is simple to install, can be disassembled, easy to install and transport, etc., almost suitable for any metal that can be punched, but the scope of use is narrow, only Used for thin-walled or sheet metal connection.