The use of welding consumables for automatic welding machines for pipelines

1. When the welding consumables are brought back into the warehouse from the owner's warehouse, the person in charge of the materials should inspect them together with the technical quality personnel as required, and should confirm the product qualification certificate of the welding consumables and the quality certificate of the same batch number, and classify and register after passing the inspection and acceptance , Establish acceptance ledger.
2. Inspection points of welding materials Each batch number of welding materials should have a quality certificate, a certificate of conformity, a factory test report, a transportation storage or an instruction manual, and imported materials should also have a commodity inspection certificate. The welding consumables of each furnace batch number can only be used after passing the process evaluation. The surface of the welding consumables is smooth, clean, free of cracks, rust, oil and other dirt. It has good process performance and molding ability.
3. The storage of welding consumables should be moisture-proof, rain-proof, and oil-proof, and placed in a ventilated and dry place by category and specification, and the shelves for stacking welding consumables should be ≥300mm from the ground, ≥100mm from the wall, and the stacking height Do not exceed the specified number of layers. In order to prevent moisture deterioration, the relative humidity of the warehouse is required to be ≤60%, which is implemented by the custodian.
4. Avoid damage to welding materials and packaging during storage and handling. Designate a special person to store and distribute welding materials, and keep distribution and recovery records, meteorological records, and baking records. Welding rods can be used after unpacking if the original packaging is intact. Welding rods are distributed in barrels or root units, and can be brought to the site for use after being signed by the recipient.
5. On-site welding rods are taken at any time. If the coating of the welding rod is found to have defects such as shedding, cracks, and eccentricity, it must not be used for welding. During the welding process, once the coating is found to be red, the section of the electrode should be discarded.
6. The dried low-hydrogen electrodes should be stored in an incubator at a temperature of 100°C-150°C, and can be taken out whenever needed. The low-hydrogen welding rods used on site should be stored in a well-performing insulation cylinder. When the relative humidity of the environment is greater than 80%, it should be used within two hours. When the relative humidity is less than 80%, use within four hours. The welding rod must be placed in the heat preservation tube during receiving and using. Welding rods of different grades and specifications are strictly forbidden to be placed in the same insulation tube to avoid misuse by welders.
7. The welding rods that are not used up on the day must be recovered in full and stored separately. The recovered welding rods should be used first after re-drying. The number of re-drying should not exceed twice. Type welding rods do not need to be baked under any conditions. Once the basic welding rod can is opened, the unused welding rod should be kept in the sealed welding rod container until it is used for welding, and the broken can that has never been closed Electrodes that have been removed from the oven or those that have been kept in open storage for several hours should be re-dried at 300-350°C for at least 2 hours, with a maximum drying time of 10 hours.
8. The welding wire cannot be dried, and should be stored in a dry and ventilated room to keep it dry. When the welding wire is wound into the wire reel, hard bending and midway breakage of the welding wire should be avoided to prevent wire winding. The unused welding wire on the same day should be taken out and packed in airtight packaging to avoid rusting of the welding wire.