7 Roof steel construction. The tin bath is made up of steel structures refractory structures heating elements cooling system shielding gas system and control system.
Fgc Group Llc Consulting Engineering Products Float Glass Industry
The surface in contact with the molten tin bath experiences tin diffusion and is referred to as the tin side while the top side often.
Improvement in tin bath float glass. The tin bath atmosphere is extracted at several points on both sides of the tin bath casing. Float glass owes its unique name to the process by which it is manufactured wherein the molten glass is introduced into a bath of molten tin causing the glass to float freely. In fact by converting from electric heating to gas heating with this new high efficiency system the user can realize up to a 70 savings in energy costs In a typical Float Fire system installation four Eclipse AutoRecupe Ultra single-ended recuperative gas burners are set up on each side of the tin bath to provide direct heat to the glass.
The float glass process involves floating a glass ribbon on a bath of molten tin and creates a smooth surface naturally. The tin cooler of Type HTICO 600 operates on the physical principle of convection cooling. Floating is possible because the density of a typical soda-lime-silica glass 23 gcm 3 is much less than that of tin 65 gcm 3 at the process temperature.
It is suitable for forming glass with thickness range of 2-19mm. The cooling pipe is submerged directly into the liquid tin. Basic float glass process.
Instead of venting the atmosphere outside the tin bath the mixture of NitrogenHydrogen is pumped out continuously purified to fresh N2H2 specifications and re-injected back into the tin bath. As the tin bath atmosphere. Installation of the infrared pyrometer.
It contains about 200 tons of pure molten tin at an average temperature of 1475F 800C. It is used to construct windows and doors the glass skins of modern skyscrapers tables shelving and display cases solar panels plasma LCD and LED screens automotive windshields and more. But the product has changed dramatically.
Improves the energy efficiency and control of the tin bath heating process. As a thin layer of floating glass forms called a ribbon and spreads in the entrance of the float. From a single equilibrium thickness of 68 mm to a range from sub-millimetre to 25 mm.
Molten glass is poured onto a liquid tin bath on which it cools and solidifies to produce two flat and parallel surfaces of a sheet. Infrared sensors should be mounted above the tin bath. History of Float Glass Float glass is the original piece of glass the progenitor to an endless generation of glass solutions.
The molten glass is fed into the tin bath which contains molten tin in an inert gas atmosphere. To prevent the tin. The molten glass at 1100C flows gently over a refractory and is spread evenly over the surface of this bath floating on the molten tin.
Stewarts superior custom design and operational know-how allows customers to operate with reduced utility costs reduced defects and increased throughput. The phrase to float means to be buoyant. The tin bath makes high quality products which are conforming to national standards of.
TIN BATH ROOF INCL. In the float glass process molten glass is fed onto a float bath of molten tin. To prevent the tin surface from oxidizing with the atmospheric oxygen the tin bath is placed under a protective gas atmosphere.
The glass mass spreads over the molten tin and forms a continuous ribbon. And this is basically the principle on which the float glass manufacturing process is based. Hydrogen and oxygen as a.
This atmosphere must be carefully controlled since its composition is instrumental for the properties of the contact surface between the glass and the tin which in turn influence the thickness of the glass. Richard travels to a glass factory in Wisconsin to see how plate glass is manufactured ThisOldHouse AskTOHSUBSCRIBE to This Old House. AL 390 Infrared pyrometer.
3 Liquid tin 600 950 C 4 Endless glass bath. The principle of float glass is unchanged from the 1950s. The float tin bath is a sealed unit with a controlled atmosphere of nitrogen and hydrogen and is approximately 26 ft.
The underside of the glass floats onto tin in the tin bath and is heated from above to achieve a distortion-free and exceptionally high-quality glass ribbon and planarity on both sides. The recycling system is a further development toward tin bath atmosphere quality improvement. First raw materials such as sand dolomite limestone carbonate and sodium sulfate as well as scrap glass are heated to extreme temperatures 1500C2800F to form molten glass.
Heater zone Fire polish zone and Cooling zone. It is oxidized in a natural atmosphere to form tin oxide TiO 2. Over 90 of the world production of flat glass is float glass.
Float technology 22 23. The float glass process involves floating a glass ribbon on a bath of molten tin and creates a smooth surface naturally. The roof consists the refractory lined casing along with roof suspension heating elements and thermocouples.
Floating is possible because the density of a typical soda-lime-silica glass 23 gcm 3 is much less than that of tin 65 gcm 3 at the process temperature. As the liquid tin flows along with the glass sheet in the direction of the colder sections near the exit end 600-500ºC the oxygen solubility decreases significantly. In the hot end area of the furnace 1100ºC a relatively large amount of oxygen enters the tin bath as a result of a high oxygen diffusivity at elevated temperatures.
Today float glass is everywhere. Hence to prevent oxidation tin bath is provided with pressure and. If you see a clear or tinted flat piece of glass it was most likely manufactured using the Float Glass.
Starting at 1100C and leaving the float bath as a solid ribbon at 600C. This glassy liquid then moves into the tin bath chamber which has a controlled atmosphere where it is poured. This tin bath is 4-8 meters wide and up to 60 meters long.
It is installed directly on the side walls of the tin bath. The tin cooler extracts heat from the tin so that the tin in turn could extract heat from the glass ribbon. Why tin bath is provided in float glass manufacturing.
The StewartFloat tin bath enables manufacturers to produce float glass with repeatable and accurate thicknesses between ultra-thin and ultra-thick. In the float glass process molten glass is fed onto a float bath of molten tin. As the glass flows down the tin bath temperature reduces down to 600C.
Tin Bath Equipment for Float Glass Production Line. THE PRODUCTION OF FLOAT GLASS Float glass is produced on a continuous production line. Tin is suitable for this type of glass manufacturing because of its higher specific gravity.
8 m wide and 196 ft. The tin bath has three different zones separately. The glass has no wave or distortion and is now the standard method for glass production.
Glass from the melter flows gently over a refractory spout on to the mirror-like surface of molten tin starting at 1100C and leaving the float bath as a solid ribbon at 600C. Also we have developed many other process improvement related to the float glass production like oxy-fuel burning glass level measurement extra thin glass furnace draining out fire resistant glass tin bath atmosphere recycling etc. The molten glass is smoothly and uniformly molded to the shape of the surface of the molten tin and leaves the float bath as a solid ribbon at 600C.
This tin bath is 4-8 meters wide and up to 60 meters long.
Tin Bath Cnud Efco International N 1 In The World
Fgc Group Llc Consulting Engineering Products Float Glass Industry
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