5.0 Borosilicate Tube Glass Transparent Sample Free

Borosilicate5.0 Glass Borosilicate Glass Tubing Transparent

raw material

Including main raw materials and auxiliary raw materials. The former refers to the introduction of raw materials such as the oxides that form the network structure of the glass, the intermediate oxides and the oxides outside the network; the latter can accelerate the melting of the glass or make it obtain certain necessary properties.

batch preparation

First, the raw materials are pre-processed, including crushing of bulk raw materials, pre-drying of wet raw materials, and iron removal of iron-containing raw materials. The particle size of pulverization is preferably 0.25-0.5mm. Too coarse particles are not easy to be fully melted, and residual powder stones or silicon-rich nodules will be formed in the glass; too fine particles are easy to fly or agglomerate into agglomerates. The raw materials with a certain particle size are precisely weighed according to the formula, and then mixed with a drum, paddle or disc mixer

Glass tube blowing method: used to manufacture hollow glass products, such as water cups, utensils, bottles, jars, light bulbs, etc. For manual blowing, a hollow iron blowing pipe with a length of about 1.5m is used, one end is dipped in glass liquid (picking material), and the other end is a blowing nozzle. After picking the material, roll it evenly on the rolling plate (bowl) and blow air to form a glass frit, which is blown into the product in the mold; it can also be freely blown without a mold, and finally knocked off from the blow pipe. When large-scale products are formed, it is necessary to repeatedly pick and roll evenly to collect enough material. During mechanical blowing, the molten glass flows out from the outlet of the glass melting furnace, and is formed into gobs with a set weight and shape through the feeder, which is cut into the preliminary mold to be blown or pressed into the preliminary shape, and then transferred to the forming mold for blowing. product. The blow-blowing method, which is blown into a preliminary shape and then blown into a finished product, is suitable for making small-mouthed utensils and bottles. The weighing-blowing method of pressing into a primary shape and then blowing it into a finished product is suitable for making large-mouthed utensils and thin-walled bottles and cans

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