Химически разширителен болт

Chemical expansion bolts generally consist of a screw, an expansion sleeve, a chemical and a nut. The screw has threads and is used to connect the object to be fixed and transmit the tightening force. The expansion sleeve is attached to the screw and is made of elastic material, usually containing a special structure or material that can expand under certain conditions. Chemicals are used to fill the gap between the bolt and the drilled hole. On the one hand, they are cured by a chemical reaction and are tightly bonded to the base material and the bolt. On the other hand, it induces the expansion of the expansion sleeve, thus creating a double anchoring effect. Nuts are used to tighten the screws so that the bolts play a tightening роля .

Compared to simple expansion bolts, chemical expansion bolts do not generate excessive expansion stresses during installation, reducing the risk of cracking or damage to the substrate (especially brittle materials). This is important in scenarios where the integrity of the substrate is required to be high, such as ancient building restoration and precision equipment foundation fixing.

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