What Is The Difference Between The Often Mentioned Large Hexagonal High-Strength Bolts ？

September 20, 2022

What is the difference between the often mentioned large hexagonal high-strength bolts ？

High-strength bolts are mainly used in steel structure engineering to connect the connection points of steel structure steel plates. According to the construction process, high-strength bolts are divided into two types: large hexagonal head high-strength bolts and torsional shear type high-strength bolts. Their connection performance and their own mechanical properties are the same, and the axial force of the bolt is determined by the torque. The size of the bolts, but at the root, the two are still very different. The following Xiaobian will come to see the difference between the large hexagonal head high-strength bolts and the torsional shear type high-strength bolts.

1. In terms of appearance.

Large hexagon head high-strength bolts and torsional shear type high-strength bolts have different shapes, and the large hexagon head is hexagonal. The torsion scissor head is semi-circular, and there is a torx head at the end of the bolt.

2. From the installation method.

The large hexagon head high-strength bolts are installed with a torque wrench. The torsional shear type high-strength bolt is controlled by the plum blossom head at the tail during the installation process, and the bolt is reversely tightened by the reaction force of the torque until the straight-toothed end of the bolt is broken.

3. From the point of view of the matching method.

Large hexagon head high-strength bolts and torsional shear type high-strength bolts are not the same. Each set of large hexagon is equipped with one bolt, one nut, and two flat washers. The torsional shear type is a bolt, a nut and a flat washer.

4. From the perspective of torque control.

The torque of the large hexagonal high-strength bolts is controlled by the construction tools, and the torsional shear type high-strength bolts are self-scalar bolts. Torsional moment to control, special electric wrench should be used during construction.

In general, large hexagonal high-strength bolts belong to the high-strength grade of ordinary screws, while torsional shear type high-strength bolts are an improved version of large hexagonal high-strength bolts. Although they are the same bolt, they are still very different in some subtle aspects. . Compared with the two, the torsional shear type high-strength bolts have the advantages of convenient construction, intuitive inspection, good stress, and guaranteed quality. Most of the high-rise steel structure projects use this form.

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Автор:

Mr. Johnson Zhang

Phone/WhatsApp:

+8613587599266

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