Composite tanks fittings

Fusion-Cast Shapes. Refractory compositions are arc-melted and cast into shapes, eg, glass-tank flux blocks as large as 305 X 610 X 1219 mm. After casting and annealing, the blocks are accurately diamond ground to ensure a precise fit. 

Another problem encountered in processing of filled composites by the RIM-process is sedimentation of the filler in tanks, transport tubes, etc. In order to overcome this problem the tanks are fitted with stirrers, so that the filled liquid is forced to circulate in the intervals between shots. Finally, it is necessary to consider the possibility of breakdown of the filler structure if this occurs, there is usually an adverse effect on the properties of a final product. 

Fresh water. Aluminum and its alloys are not prone to corrosion on exposure to distilled water up to 180°C. Thus storage tanks, piping and fittings of the alloy can be used for handling distilled water. The composition of natural fresh water is variable. In spite of this restriction, the alloys are not attacked, even at 180°C in natural waters. It should be noted that pitting may occur when a small thickness of the sample is exposed. In this case Alclad 3003 is recommended for use to avoid failure due to pitting. 

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