Matters needing attention in the construction of high-strength bolts

1. Matters needing attention in product quality

(1), the surface floating rust, oil stains, burrs on the bolt hole wall, welding bead, etc. should be cleaned up.

(2) After the contact friction surface is processed, the specified anti-scratch coefficient requirements must be met. The high-strength bolts used should have matching nuts and washers. They should be used as a set when in use, and should not be interchanged.

(3). When installing the friction surface of the processed component, it is not allowed to be stained with oil, dirt, etc.

(4). The friction surface of the module should be kept dry during installation and should not be operated in the rain. (Guide: List several formulas of cutting fluids for thread tapping (mass score))

(5). Strictly check and correct the deformation of the connected steel plates before installation.

(6). It is forbidden to hammer into the bolt during installation to prevent damage to the bolt thread.

(7). The electric wrench that is tested regularly when in use, to ensure the accuracy of the torque, and operate in the correct tightening sequence.

2. Main safety technical measures

(1). The size of the spanner of the adjustable wrench should be consistent with the size of the nut, and a small spanner should not be used to add casing. A dead wrench should be used for high-altitude operations. For example, when using an adjustable wrench, use a rope to fasten it, and people must wear a seat belt.

(2). When assembling the connecting bolts of steel components, it is strictly prohibited to insert the connecting surface or probe the screw holes by hand.

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