Standard for projection weld bolts on bearing surface

1. Overview

Bearing surface projection welding bolt is an important mechanical connection element, which is widely used in all kinds of steel structures, mechanical equipment and construction projects. The bolt has the characteristics of high strength, high reliability and good bearing capacity, which plays a key role in ensuring product quality and safety.

2. main parameters

1. Bolt diameter: choose according to the actual demand, common M10, M16, M20, etc;
2. Bolt length: determined according to the actual needs of the connector, as described in the title, the bolt length can be 600mm;
3. Material: generally use high-strength steel, such as Q345, etc;
4. intensity level: according to the use of the scene to choose, common 8.8 level, 10.9 level and so on.

3. main features

Bearing surface projection welding bolts have the following characteristics:

1. The surface is smooth, without cracks, rust and other phenomena;
2. The thread shall be clear and free of random lines, mutilations and other phenomena;
3. The projection welding part shall be firmly connected with the bolt shank without looseness;
4. It has good bearing capacity and fatigue resistance.

4. Application and Precautions

Bearing surface projection welding bolts are widely used in bridges, buildings, machinery and equipment and other fields. In the process of use, the following matters need to be paid attention:

1. In strict accordance with national standards and design requirements to select bolt specifications and performance grade;
2. In the installation process, to ensure that the bolt is clean, to avoid oil, impurities and other effects on it;
3. Use appropriate tools for installation to ensure that the tightening force of the bolts meets the design requirements;
4. During use, check the status of the bolts regularly, and deal with them in time if they are loose or damaged.

5. Summary

As an important mechanical connection element, the quality of projection welding bolt plays a key role in ensuring product quality and safety. Therefore, when purchasing and using the bearing surface projection welding bolts, they should be selected and used in strict accordance with the relevant standards to ensure that their performance meets the actual needs. At the same time, regular inspection and maintenance should be carried out during use to ensure that it is in good working condition.