Copper nuts are nuts made of copper materials (usually lead brass, such as H59, H62). The copper nuts we come into contact with are mainly hexagonal nuts or other copper nuts that match the bolts.
Because copper nuts have the advantages of not being easy to rust, anti-corrosion, easy to conduct heat and strong electrical conductivity, they are generally used in anti-rust, high temperature, electrical, and thermal conductive environments, such as faucets, valves, electrical switches, etc.
Another main purpose of copper nuts is injection molding. After heating, they are embedded into plastic parts or direct injection molding. As mentioned above, brass has good thermal conductivity. If heated copper nuts are used for embedding, on the one hand, copper nuts It can quickly heat up and speed up the work efficiency.On the other hand, the heated copper nut can quickly transfer heat to the plastic part, so that the periphery of the plastic hole becomes soft, which is conducive to pressing into the hole; then, if the mold is used for injection molding, the effect will be What if? As we all know, the melting point of PA/NYLOY/PET is above 200 °C, and the temperature of the copper nut is quickly increased after being hot melted into the plastic part. After injection molding, the plastic body is rapidly cooled and crystallized and hardened. If the temperature of the copper nut is still At high temperature, the place where the copper nut is in contact with the plastic part develops looseness or cracks. Therefore, copper nuts are used in injection molding instead of steel nuts.
According to the purpose, it can be divided into three categories: machine screws, set screws and special purpose screws. The machine screw is mainly used for a part that tightens the threaded hole. The screw is also a type of fastener composed of two parts: the head and the screw. The fastening connection with a part with a through hole does not require nut fitting (this connection form is called a screw connection, which is also a detachable connection; it can also be matched with a nut for two through holes Fastening connection between parts. Set screws are mainly used to fix the relative position between two parts. Special purpose screws such as eye screws are used for hoisting parts. The shape is generally flat hexagonal column, nut: with There are internal threaded holes. There are also flat square cylinders or flat cylinders, with bolts, studs or machine screws, which are used to fasten and connect two parts to make them into a whole.
High-strength self-locking copper nut
With high strength, it is a classification of self-locking nuts. The strong side of reliability. It is mainly based on the introduction of European technology as a prerequisite for use in road construction machinery, mining machinery, vibration machinery and equipment, etc. At present, there are very few domestic manufacturers of such products.
Nylon self-locking copper nut
It can be used in various mechanical and electrical products at a temperature of -50100°C. Nylon self-locking nuts are a new type of high-vibration and anti-loose fastening parts. The demand for nylon self-locking nuts for aerospace, aviation, tanks, mining machinery, automobile transportation machinery, agricultural machinery, textile machinery, electrical products and all kinds of machinery has increased sharply This is because its anti-vibration and anti-loose performance is much higher than other copper inserts.