To put it bluntly, mechanical anchor bolts are a general term for a class of standard parts that use non-organic chemical adhesion methods to carry out steel anchoring. Generally, the basic engineering mechanical anchors include rear-expanded bottom anchors, super-heavy anchors, anchor anchors and multi-level expansion bolts.
Bottom-expanded anchors are also called rear-cut anchors, die-expanded anchors, and rear-cut anchors. The major difference from other mechanical anchors is that the rear-expanded bottom anchors are anchored by steel reinforcement technology, and the bottom end of the anchor is completely inserted to achieve the actual effect of mechanical equipment locking. What are the normal shortcomings of the rear expanded bottom mechanical anchor bolt, the following is an introduction for you:
The normal shortcomings of the rear-expanded bottom mechanical anchor:
1. Dent marks are shallow pits or dents that appear on the surface of anchor bolts or screws because the metal material is not covered in the whole process of forging or upsetting. The dents are caused by cutting or shearing burrs or the rust layer of the raw material, or stamped and cannot be removed in the forging or upsetting process.
2. Shear burst, which will cause shear burst during the whole forging process, such as on the round mouth or flange surface of the product, or on the circle of the flange surface, which is generally about the axis of the product pivot. Shear bursting may also be allowed within a certain range on the plan view of the opposite side of the hexagonal head product.
3. Forging gaps. Forging gaps will be created in the cutting or forging process, and the length, depth, or total width of the gaps on the top of the anchor bolts and screws are allowed within a certain range.