Copper nuts, also known as embedded nuts and embedded copper nuts or plastic embedded nuts, are also divided into hot-melt copper nuts, hot-pressed copper nuts, embedded copper nuts and ultrasonic copper nuts according to different methods of use. This product is widely used in mobile phones. Housing/Pen housing This housing/injection part/insert for plastic parts is used as an internal thread. Generally cylindrical embossed to prevent sliding.
Nuts
The nut specification table is a detailed and detailed combination of all kinds of nuts and uses a table to subdivide some specifications of the nuts. There are many types of nuts, but also nuts of different materials. Each type of nut has different specifications, and each type of screw also has its mechanical properties and effects. Copper nuts made of various embossed wires (usually lead brass, such as H59, 3604, 3602). The embedded knurled copper nuts that we come in contact with are all machined from precision automatic lathes.
The reference standard of the embedded knurled copper nut comes from the national standard GB/T809. The main operation method of embedded knurled copper nut is injection molding, which is embedded in plastic parts after heating or direct injection molding. If mold injection molding is adopted, the melting point of PA/NYLOY/PET is above 200°C, and the embedded nut is melted. After entering the plastic parts, the temperature rapidly increases, after injection molding
The plastic body rapidly cools and crystallizes. If the temperature of the embedded nut is still at a high temperature, it may fall to the point where the copper nut and the plastic part come into contact with each other and begin to loosen or crack. Therefore, copper nuts are used instead of carbon steel nuts in the injection molding of the insert nuts.
There are two ways to form knurling of the embedded copper nut. One is to use brass material to draw and form on the upper equipment. Generally, the pattern is drawn in the pattern, and the other is used. The round copper material is directly embossed on the side during the production process. This process can produce some non-standard knurled copper nuts. The shape of the embossed copper nut can be selected according to the user, such as textured, Embossed characters, herringbone embossing and other rolling patterns.