High-strength nuts are nuts that are made of high-strength construction steel or that must be clamped with great effort. Generally speaking, high-strength nuts are widely used in bridge construction, construction steel production and connection of some high-voltage equipment. The requirements for high-strength nuts are mainly reflected in their technical standards, and thicker nuts are generally used. High-strength nuts are made of high-strength steel, in other words, nuts that require a large force to clamp, can be called high-strength nuts. High-strength nuts are mostly used on bridges and rails or some high-pressure and high-pressure equipment connections. The fracture method of high-strength nuts is generally brittle fracture. - Generally, in order to ensure the tightness of the container, we require a larger prestressed steel bar when using high-pressure equipment. The use of high-strength nuts At present, many generator equipment and transportation I, such as airports, cars, trains and ships, are in the process of rapid and rapid development. Therefore, clamping components such as our own nuts must also follow the trend and develop rapidly to keep pace with the development trend. Maijin introduced that high-strength bolts are mainly used in the connection of some important mechanical equipment, especially the nuts that will be repeatedly disassembled and assembled and their various assembly methods are very demanding. The surface condition and precision of the screw teeth will affect the use of equipment and safety performance of the equipment. Generally, in order to adjust the frictional resistance and avoid corrosion and jamming during use, it is generally required to plate a layer of nickel-phosphorus on the surface. The thickness of the coating is generally kept in the range of 0.02~0.03mm, and it is necessary to ensure that the coating is uniform, the structure is high-density, and there are no pinholes. The production process of nickel-phosphorus plating for high-strength nuts is composed of three parts. The key lies in the pre-plating treatment, which mainly includes the pre-plating precision of high-strength nuts and the inspection of the appearance to see if there are cracks or defects. Oil stains can be removed through work, or soaked to remove them, and can also be passivated by pickling, followed by the use of electricity to activate nuts and rapid nickel plating. Processes such as heat treatment, grinding and polishing, and finished product inspection. High-strength nuts should pay attention to some problems. The key is to pay attention to the quality of surface cleaning must be complete, and then the friction resistance needs to meet the technical standards. When using it, it should be carried out in the absence of water, and it should be repaired and calibrated immediately.