| 摘要 |
Coating high-aluminum brown amber glass, suitable especially for automatic machine manufacturing of bottles and coating glass contains 60 to 70 per cent weight of silicon dioxide, 4,0 to 8,5 per cent weight of aluminum oxide, 10 to 15 per cent weight of sodium oxide, 0,5 to 5,0 per cent weight of potassium oxide, 7,0 to 11,0 per cent weight of calcium oxide, 3,0 to 6,0 per cent weight of magnesium oxide, 0,01 to 0,2 per cent weight of sulfuric oxide, 0,01 to 0,2 per cent weight of polysulfide of iron and alkali metals. Total contents of iron expressed as iron oxide is 0,27 to 0,8 per cent weight. Total contents of alkali metals is 11,5 per cent to 15,0 per cent weight of oxides of metals alkali soils is 13,0 to 14,5 per cent weight. Total sum of oxides of alkali metals and metals of alkali soils is 26 to 28 per cent of weight.
|
