The matching of bolts and nuts plays a key role in the assembly of industrial aluminum profile frames. The specific matching method depends on the connection requirements and profile specifications.
For external connections, the commonly used matching method is to use angle pieces with T-bolts and flange nuts. For example, when using 4040 aluminum profiles, angle pieces that match the profile specifications, as well as T-bolts M8*20 and flange nuts M8 should be selected. This matching method is suitable for frame connections that need to bear a certain weight.
For internal connections, especially when two profiles or T-shaped connections are used, elastic fasteners can be used with semicircular head bolts and hexagon socket bolts. For example, when using 4040 profiles, elastic fasteners with matching specifications and M820mm semicircular head bolts and M845mm hexagon socket bolts 1 should be used.
In the case of vertical connection of three profiles, a combination of semicircular bolts, elastic fasteners and hexagon socket bolts is usually used. In addition, this can be achieved by using built-in connectors with hexagon socket bolts and elastic nuts/spring nuts, or by using a combination of anchor pins.
When selecting bolts and nuts, it is also necessary to consider the matching of their performance grades and specifications. For example, grade 8 nuts can be matched with grade 8.8 bolts, grade 10 nuts can be matched with grade 10.9 bolts, and so on. Ensure that the matching of bolts and nuts can meet the required mechanical properties and safety requirements.
In summary, there are various ways to match bolts and nuts, and the specific choice depends on the specific needs and profile specifications of the connection. The correct matching not only ensures the firmness and safety of the connection, but also improves the stability and durability of the overall structure.