A, stainless steel Industrial Valves cleaning steps: the Industrial Valves parts before assembly must go through the following process: 1, according to the processing requirements, some parts need to do polishing processing, surface can't be machining burrs, etc. ; 2, all parts for degreasing process; 3, degrease pickling passivation, after the completion of cleaning agent does not contain phosphorus; 4, rinse clean with clean water after pickling passivation, there can be no drug residues, carbon steel parts leave out this step; 5 parts with non-woven fabric, shot for dry, not cable MAO retained components surface, or use a clean dry nitrogen; 6, with non-woven fabric or precision filter analysis of pure alcohol to wipe components one by one, until no dirty color. Second, the assembly requirements: clean the parts must be kept sealed, for installation. Requirements for the installation process is as follows: 1, the installation must ensure that the workshop clean, or clean up temporary area, for example with the new purchase of striped cloth or plastic film, etc. , to prevent dust during the installation process has entered. 2, the assembly workers must be dressed in a clean, pure cotton overalls, head Dai Chun cotton padded cap, hair can't leakage, foot wear clean shoes, hand wear plastic gloves, skim. 3, erection tools must be clean before assembly to skim, ensure clean. Other requirements: 1, assembling complete valve with nitrogen purging at least 1 minute. 2, air test must be with pure nitrogen. , air test qualified junior 3 d package, with a clean PE cap seal, polyethylene cap before using organic solvent soak, wipe clean. 4, then the seal in the vacuum bag. 5, the final packing. 6, in the process of transportation to take measures to ensure the coating is not damaged. Acceptance follow HG 20202-4 and acceptance requirements 2000 the degreasing engineering construction and acceptance standard, each part before assembly precision filter paper to wipe clean, select parts dead Angle, filter the same color as qualified.
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