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Preparation of the surface of used cylindrical steel cases for zinc recoating | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 10, Issue 1, 2010, Pages 70-76 | ||
| Author | ||
| Abdulrasoul Salih Altaei | ||
| Abstract | ||
| Used cylindrical steel case usually plated with zinc, to reuse these cases, dirt, oil, grease, rust and old layer of zinc coat must be removed and again replated. In an mechanical complex, cleaning and surface preparation of used steel case was carried by mechanical method. Sanding lathe machines with an emery sandpapers were used to do this job, this method has many disadvantages, some of are the low production rate , the need for large manpower , original metal damage , it is expensive and dust occur during sandering cause environmental problems at the jobsite. In this case study cheap, and high production rate chemical method was proposed and executed to clean and prepare steel case surface for recoating as alternative to the mechanical method, the production rate increased more than ten fold compared with mechanical method. . The concentration of the consistent of the chemical solutions and operation conditions were determined as a result of several experiments. Eight steps technological procedure was suggested. | ||
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