Ensuring the quality of welding in the air compressor pipe layout requires a series of standards and measures to be , and here are some of the key points:
1.Welding process qualification: The welding process should be in accordance with the scope covered by the welding process qualification report. Ensure the welding quality when the pipe joint is positioned in the team, ensure that the back of the pipe joint forms a good curved surface, reduce the frequency of welding nodules and damage uneven inequality, ensure the concentricity of the pipe, and the amount of misalignment is also regulated.
2.Component quality inspection: Before installing the pressure pipeline, the components must be strictly inspected, and the inspection can not only be for the material, but also for its strength and tightness.
3.Processing and installation: In the actual installation process of pressure pipelines, installers need to process, cut and install the pipelines according to the needs of the actual situation. The whole process has extremely high requirements for the work experience of the installer, the understanding of raw materials, welding technology methods, etc.
4.Quality of welding materials: to ensure the quality of welding materials, high quality requires the use of high-quality raw materials, welding personnel must carry out complete inspection of all materials before welding work, and each step is recorded.
5.Inspection after welding: After the installation of the pipeline, it is necessary to carry out quality inspection work on the pressure pipeline after installation, including the quality inspection of the weld surface, non-destructive testing of the weld, and check whether the weld has porosity, slag inclusion, non-fusion, and non-weld penetration. A stress test is also required.
6.Welding process documents: Before construction, the welding technical responsible personnel should prepare the welding process documents according to the welding process qualification results, and make technical disclosures to the operators, and the provisions of the process documents should be strictly observed during construction.
7.Bevel and gap control: The bevel surface should be flat and smooth, and there should be no defects such as cracks, interlayers, processing damage, slag inclusions, burrs and flame cutting slag. When the groove assembly clearance exceeds the allowable deviation specification, it can be welded on one or both sides of the groove, and grind to meet the requirements.
8.Welder qualifications: The relevant construction personnel must have the special equipment welder certificate required by the state to provide a strong guarantee for the welding work, and operate carefully in the process of pipeline prefabrication and installation to avoid problems.
9.Welding environment control: welding work is carried out in the workshop or on the ground, the environmental impact is small, the quality is relatively easy to control, mainly control the quality of welding consumables, strictly follow the baking and distribution system, control the amount of welding rod each time, and supervise the normal use of welding rod barrels.
10.Quality control measures: establish a quality assurance system, organizational structure and quality management system, clarify the quality responsibilities of each management department, and implement the responsible persons. Conduct relevant training for welders and obtain welding qualifications for corresponding projects. According to the materials, specifications, models, and standards required by the material preparation plan, qualified material suppliers with processing and manufacturing capabilities and manufacturing qualifications should be selected.
By following these standards and measures, the quality of the welds in the compressor duct layout can be ensured, thus ensuring the safety and efficiency of the entire system.