Additional standards for high-strength bolt installations

2023/07/30

Whether it is the production and processing of high-strength bolts, to the quality inspection of high-strength bolts for safety products, and finally to the standard installation of storage and transportation for scientific research, I firmly believe that all partners have a very detailed grasp of it! As a standard part, the production process of high-strength bolts is very strict, and there are relatively strict operating specifications in the key steps, but some small key steps can be done by individuals, which must be sorted out and implemented. The following writing will sort out some key links. Another standard for high-strength bolt installation stipulates that when we install high-strength bolt joints, the side of the screw cap with a round table should face the chamfered side of the washer. In general, when installing a high-strength bolt connection pair with a large hexagonal head, the chamfered side of the washer under the bolt head should face the bolt head. When installing high-strength bolts, construction personnel should strictly prohibit the forced penetration of the bolts (here refers to hitting with a hammer). If you are not free to base, you should use a reamer to trim the hole. The relatively large diameter of the hole should be less than 1. 2 times the diameter of the bolt after development. When repairing the hole, in order to prevent the iron injection from entering the joint, all the nearby bolts should be tightened before drilling, and check whether it is firm, so that the steel plate can be tilted firmly during the operation. One of the areas that must be paid special attention to is the strict prohibition of gas fiber laser cutting to expand the hole. Cutting and drilling with a gas fiber laser is more likely to happen in the field and must be inspected especially.

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