Ultra-white glass storage and maintenance
In order to strengthen the quality control of ultra-white glass and reduce the second pollution, since the ultra-white glass raw materials are easily contaminated, it is necessary to strictly control the control of the feeding and conveying system, prevent secondary pollution, and reduce the storage of ultra-white glass. The possibility of secondary pollution.
Because of the use of tons of bags as much as possible, the purpose of transportation and handling is convenient and flexible. Raw materials are also susceptible to pollution. Sandstone powder is used in large quantities. It can be used in bulk. The secondary pollution of ultra-white glass should be reduced by lining the PE board or using stainless steel lining around the vehicle and regularly spraying paint. For the purpose of turning the sandstone powder for the forklift truck, minimize the chance of contact with the iron equipment.
Ultra-white glass mildew countermeasures
Due to the composition of the ultra-clear glass and the thermal history, it is more susceptible to mildew than ordinary float glass.
Ultra-white glass mold is the result of the exchange of alkali metal ions R+ with external ions. The more the R+ content, the more serious the problem of mildewed glass. Ultra-white glass has an alkali metal oxide content of up to 15%, and ordinary float glass is about 14%, so ultra-white glass is more susceptible to mildew than ordinary float glass.
In the ultra-white glass formulation design, the amount of CaO and MgO is not reduced as much as possible to obtain a good pressing effect of the divalent metal oxide. However, the design of the ultra-white glass formula should be considered in an integrated manner to prevent this from happening.
Appropriate adjustment of the annealing system to obtain good annealing performance.
Suitable mild powder for mild white glass should be used. In the case of existing ultra-clear glass, the composition and structural characteristics cannot be changed, and the efficacy of the anti-mold material becomes the key to reducing the risk of mold. Since ultra-white glass is prone to mildew, it is obviously not enough to simply use ordinary float glass mildew-proof powder on ultra-white glass. We must use mold-proof powder with higher mold-proof efficiency.
Vacuum packed. Similar to the principle of vacuum packaging of food, it is effective even if it is impossible to achieve such a high degree of vacuum. The method is to use a thick plastic film or aluminum foil to wrap the ultra-white glass when packaging the ultra-white glass, and to remove the internal air and seal the edge.
In order to minimize the impact of a small amount of gas on the ultra-white glass, a certain amount of desiccant is placed in the package. Practices at home and abroad have shown that this method has a significant effect on the anti-mildew effect of glass. One company in China adopts this method, and its ultra-white glass is basically free of mold after one year.
Summary:
It is necessary to fully understand and understand the importance of glass raw material control, strengthen the control of raw materials to prevent secondary pollution, and ensure the stability of iron content is the key to the production of ultra-white float glass; strengthen the control of melting and clarification, reduce micro-bubbles in glass, It is an effective way to improve the quality of ultra-clear glass; to understand the mildew mechanism of ultra-white glass, to master its characteristics, and to take targeted anti-mildew measures, to minimize the moldy risk of ultra-white glass, and to create more for enterprises benefit.