Construction preparation and operation steps of large hexagonal bolts

There are two steps in the construction preparation of large hexagonal bolts: 1. Before the construction of large hexagonal bolts, the preparations for each process should be formulated according to the processing technology; 2. The materials and machine parts required for construction should be Comply with the requirements of the process regulations; 3. Carry out pre-employment learning and training to let workers understand the characteristics of relevant high-strength bolts and what should be paid attention to during operation; 4. Before construction, it is necessary to check and detect torque wrenches and other parts. What are the operation steps? 1. The form, specification and technical standard of the large hexagonal high-strength bolt connection shall comply with the design requirements and the requirements of the national industry standard, and the manufacturer of the bolt shall also produce a certificate of qualification; 2. The bolt Storage and transportation should comply with the following requirements; (1) The storage place of the hexagonal bolts should be in a waterproof, rainproof and smoke-proof place, and be classified and stored according to the type and size; Under normal circumstances, it should be handled with care to avoid collision, damage to the packaging and damage to the outer thread of the bolt; (3) For long-term storage or unreasonable storage, the corrosion of the bolts and dirt may cause damage to the bolts. If the torque index of the bolt changes, it should be cleaned and lubricated according to the actual situation. If necessary, the torque index or pre-tension force of the bolt should be tested, and it can be used after passing the inspection; Large The test of hexagonal bolts on the connection site should meet the following requirements: 1. In each work, before making a joint installation, it should be closely combined according to the steel type of each prefabricated component and the new century of surface technology , Carry out continuous experiments on the anti-movement index of the joint surface; 2. The number of each experiment is three groups; the results meet the standards and can be constructed.