Release time：2020-01-16 18:44 Browse：
First, the basic structure of the cylindrical head hexagon bolt
Cylindrical head hexagon bolt, as the name suggests, the head is designed to be cylindrical, easy to install in a limited space, reducing the requirements of the assembly environment. The design of the hex provides higher torque transmission efficiency, compared with the traditional outer hex bolt, the hex bolt can effectively prevent the damage of the bolt head in the tightening process, but also avoid the possible slip-off phenomenon when using the wrench, improve the safety and efficiency of the operation.
Second, the necessity of lengthening the design
The word "lengthening" means that the bolt exceeds the conventional standard in length, which is usually designed to meet the connection needs under specific working conditions. In large mechanical equipment, heavy structures or connections that need to penetrate multiple layers of material, ordinary length bolts are often inadequate. The lengthened bolt not only ensures the firmness of the connection, but also effectively distributes the stress and reduces the risk of fatigue fracture caused by the concentrated force on the connection point.
Third, the mystery of oxidation black treatment
Oxidation blackening, as an important method of bolt surface treatment, aims to improve the corrosion resistance, wear resistance and appearance quality of bolts. This process forms a dense oxide film on the surface of the bolt by chemical or electrochemical methods, which can not only effectively isolate the direct contact between the corrosive medium such as air and water and the substrate, but also resist mechanical wear to a certain extent and extend the service life of the bolt. In addition, the oxidized black bolt surface shows a deep black, not only beautiful and generous, but also has a certain degree of concealment, suitable for industrial occasions with low appearance requirements.
Four, three combination of the unique design
The "three combination" design usually refers to the matching use of bolts, washers and nuts, which further enhances the stability and reliability of the connection. By reasonably selecting the material and thickness of the washer, the preload of the connector can be effectively controlled to prevent loosening. At the same time, the three-combination design is also easy to disassemble and maintain, improving the maintainability of the equipment. This design is particularly important in complex or demanding industrial applications.
5. Industrial applications and advantages
Cylindrical head hexagon hexagon oxidation blackening three combination lengthening bolts are widely used in automobile manufacturing, aerospace, heavy machinery, bridge construction, petrochemical and other fields. In automotive manufacturing, they are used to connect key components such as engines and transmissions; In the aerospace field, it is favored for its high strength, high corrosion resistance and lightweight characteristics; In heavy machinery and bridge construction, it is an indispensable foundation connection, carrying huge loads and complex stress changes.
Its advantages are not only the advantages of the above mentioned structural characteristics, surface treatment technology and combined design, but also that they can significantly improve the overall performance of the equipment, reduce the failure rate, extend the service life, so as to bring considerable economic and social benefits to the enterprise.
