Friday, October 12, 2007

How to make a glass

Several steps are required in the production of a glass. First, the materials which include sand, soda and limestone are reduced to powder. After the coarse parts are sifted, they are heated within a furnace of high temperature for five or six days. The result of the heating process, which appear in liquid form, will be sent to two places. The first place liquid will be shaped by rollers and later be cooled to form a flat shape. This process will produce the a plate glass. The second place liquid is put in a mould and be blown by air. The liquid is then cooled and removed from the mould when it is cool enough. This process is meant to create a bottle glass. These are the basic steps for producing the two type of glasses.

Daniel
16507183

Wednesday, October 10, 2007

Glass Making Process

There are three steps in the glass making process. First, we have to collect some materials such as sand, limestone, and soda. Then, put the materials in the furnace which have thousands celsius degree temperatures. In the furnace, those materials will be melted and mixed. After that, to make a plate glass, pour the mixture into roller pins, let the roller pins pressed it, cool it down, and get the thin flat glass. To make a bottle glass, pour the mixture into a removable mould, blow by air, cool it down, remove the mould, and get the bottle shaped glass.



Annisa Fitri
16507140

Monday, October 8, 2007

How to Make a Glass

           There are some steps in making glass. The first step is mixing the basic materials (that is sand, soda, and limestone) in a furnace. Next step is melting the materials in a certain temperature in the furnace. The mixture from the melting process then divided based on the product that wanted to be created. To make a plate glass, the mixture is flattened using a roller. To make a bottle glass, the mixture is placed in a removable mould and then blown by air to make a bottle shape. The last step is cooling the mixture so it last appearance is a glass.

Sunday, October 7, 2007

Process of Making Glass...

Making glass has several steps, which can’t be rearranged. First, we have to prepare the materials used to make glass, such as sand, soda, and limestone, and the tools like furnace, roller, and removable mould. Then, the materials are mixed (by reducing them into powder). After that, they’re heated in the furnace, preferable in the constant temperature for about 5 to 6 hours. The result of this heating is divided into two places according the shape desired. In the first place, the melted mixture is flattened by rollers and cooled into a solid plate glass. In the second one, the melted mixture is distributed into the mould, given air pressure, and then cooled. After the solid bottle glass obtained, the mould can be removed. Finally, the glass products are ready to sell or use.


Martin Sirait (16507338)

Have a nice holiday..!!


glass making

There are several steps to produce glass. First, the materials such as sand, soda, and limestone must be reduced to powder. After the coarse parts are sifted, the mixed materials are heated in a furnace for five or six hours in very high temperature. Then the result of the heating process, which is liquid form, will be distributed to two places. In the first place, the result will be shaped by rollers and then cooled to form a flat shape which process will produce plate glass as the result. In the second place, the result of the heating process is put in removable mould and blown with air. After the mixture is cooled, the mould can be removed and a bottle glass has been formed.

How the Glass is Made

I will explain how the glass is made, generally, in 3 steps:

First, gathering the materials for making glass. The materials are sand, limestone, flint, spar, or some other silicious substances, with one or other of the fixed alkalies, and in some cases with a metallic oxide. The silicious substances are lead, borax, arsenic, nitre, or any alkaline matter such as soda, pearlash, sea-salt, and wood-ashes.

Second, processing the materials. The coarse goods must be washed in water. Then it must be reduced to powder. After sifting out the coarse parts, the proper proportions are mixed together, and put it into the calcining furnace, where they are kept in a moderate heat for 5 or 6 hours, being frequently stirred about during the process.

Third, forming the glass. The melted glass from furnace is divided into two places with two purpose; making plate glass and making bottle glass. To make plate glass, the melted glass is flattened and cooled by rollers, and the result is thin plate glass. At the other place, to make bottle glass, the melted glass is flowed into removable mould then blown by air. The glass is cooled and the mould is removed, then the result is bottle glass.

Now we know the production of glass. Do you know how you were made by God?



Nurfitri Anbarsanti
16507029