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繁體中文1. Hot Dip Galvanized
The hot-dip galvanizing process consists of three steps: surface preparation, galvanizing, and inspection.
Surface treatment: For high-quality hot-dip galvanizing, steel must be properly prepared prior to immersion in a molten zinc bath. During the surface preparation stage, the material going through degreasing /corrosively cleaning, pickling and fluxing.Galvanizing: After surface treatment, the steel is immersed in a bath of molten zinc. The zinc pot contains at least 98% pure zinc and is maintained at a temperature between 815º-850º F (435º-455º C). When the steel is immersed in the kettle, the zinc reacts with the iron in the steel to form a series of metallurgically bonded zinc-iron alloy layers, with the final top layer being 100% zinc.
Inspection: The inspection process for galvanized steel is quite simple. Zinc does not react with unclean steel, so a visual inspection of the product provides a good assessment of the quality of the coating. Coating thickness tests and ASTM-compliant tests will also be performed.
2. Satin Brushed Finish
Brushing the stainless steel produces a distinctive look with a muted luster and a pattern of fine parallel lines. It has strong decorative appeal without being too reflective, as too much reflectiveness can be undesirable. For example, overly reflective stainless steel accents on a building could be blinding in bright sunlight. The drawbacks to this finish include reduced corrosion resistance because the grooves of the finish are susceptible to rust.
3. Mirror Finish
Mirror polishing is highly reflective and is made of polished stainless steel. The polishing process enhances appearance and consistency, making cleaning easier. It also masks the sequelae of soldering and masks surface damage.
Mirror polishing is made by mechanically treating the surface with a series of tapered abrasives. Alternatively, a special rolling procedure can be used which simulates the appearance of mechanical wear. At this stage, deep scratches must be removed because any surface defects are very noticeable on the finished product. The final process involves polishing the surface for 5-10 minutes to form a mirror-like highly reflective surface.