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Minimum Order
Place of Origin:
China
Price for Minimum Order:
-
Minimum Order Quantity:
3000 Square Meter
Packaging Detail:
wooden or Plywood crates
Delivery Time:
30 days
Supplying Ability:
-
Payment Type:
T/T, Western Union
Hong Kong
連絡先担当者 Mr. Asif
kam tin road, kam tin
clear float glass:
1. high strength
2. the smooth surface
3. stable chemical stability
4. excellent optical performance
Clear Float Glass Production:
The raw materials ( silica sand , calcium , oxide , soda and magnesium ) are properly weighted and mixed , and then introduced into a
furnace where they are melted at ***0° C. The molten glass then flows from the glass furnace into a bath of molten tin in a continuous
ribbon. The glass, which is highly viscous, and the tin, which is very fluid,do not mix and the contact surface between these two materials
is perfect ly flat. When it leaves the bath of molten tin , the glass has cooled down sufficiently to pass to an annealing chamber called a lehr.
Here it is cooled at the controlled temperatures, until it is essentially at room temperature.
How Float Glass is Manufactured
1. Batching of raw materials
The main components of Soda Lime glass, Silica sand (*3%), Calcium oxide (9%), Soda (*3%) and Magnesium (4%), are weighed and mixed into
batches to which recycled glass (cullet) is added.
The use of cullet reduces the consumption of natural gas. The materials are tested and stored for later mixing under computer control.
2. Melting of raw materials in the furnace
The batched raw materials pass from a mixing silo to a five-chambered furnace, where they become molten at a temperature of approximately ***0 centi degree. Every operation is carefully monitored.
3. Drawing the molten glass onto the tin bath
The molten glass is "floated" onto a bath of molten tin at a temperature of about ***0°C. It forms a ribbon with a working width of ***0mm which is normally between 3 and *5mm thick. The glass which is highly viscous and the tin
which is very fluid do not mix and the contact surface between these two materials is perfectly flat.
4. Cooling the molten glass in the annealing lehr
On leaving the bath of molten tin, the glass - now at a temperature of **0°C
has cooled down sufficiently to pass to an annealing chamber called a lehr. The glass is now hard enough to pass over rollers and is annealed,
which modifies the internal stresses enabling it to be cut and worked in a predictable way and ensuring flatness of the glass. As both surfaces
are fire finished, they need no grinding or polishing.
5. Quality checks, automatic cutting, storage
After cooling, the glass undergoes rigorous quality checks and is washed. It is then cut into sheets up to ***0mm x ***0mm which are in turn
stacked and stored ready for transport. An automatic stacker takes plates of glass directly from the end of the production line. This is approximately
half a kilometre from the beginning of the float line. The entire production process from the batching of raw materials to cutting and stocking is fully