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Bolts are used to connect and fasten two pieces of the same material or two materials of different materials. The screws have a head in different shapes that can be used to screw the screw by different types of screwdrivers, wrenches and. . . It is larger than the body of the screw and is mounted on the stem of the screw.
Screws are generally made of steel wire, which is coiled. The wires should be soaked in hot solution for 30 minutes before preparation to reach the required softness and be ready for the production process.
After being removed from the heating solution, these screws must be immediately placed in a bath of sulfuric acid to remove all their impurities, and a protective layer is applied on them to prevent them from rusting.
After this step, the wire is placed in a cold sulfate bath to be slightly sulfated, and finally the surface of the wire is lubricated to make it easier to form.
Using a forging machine, we first pass the wires through the coils so that their surface is smooth. Then we cut these wires in different dimensions according to their characteristics. Coils that are initially cut are usually longer. The last stage of forming the screws is the stage of forming the flowers of the screws. These screws are created by a press and three blows. On average, three screw flowers can be created per minute.
During the production of bolts, after producing a number of products, several samples of bolts are tested for appearance and dimensions. To do this, they usually use a digital micrometer to measure the length of the screw and a digital clamp to measure the diameter of the screw. After that, they test how and how easily the screw nuts are fastened on the screws.
1. Better and more efficient use of materials
2. Very high efficiency
3. The accuracy and quality of the dimensions of the manufactured products increase dramatically
4. Increase the strength property through strain hardening
To polish the surface of the bolts, tools are pulled along the bolts being produced, which greatly contribute to the beauty of the surface of the bolt connectors.
Ahan Pouya with more than a decade of best-selling experience, adheres to professional and ethical principles in the field of selling and buying at inside and outside the borders of Iran, helping you in the steel industry.
