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Mixing
The silica sand, borax and boric acid are delivered into the mixer with the force of air and then mixed. The mixed ingredients are then sent to the melting furnace via a computer-controlled conveyer.
The silica sand, borax and boric acid are delivered into the mixer with the force of air and then mixed. The mixed ingredients are then sent to the melting furnace via a computer-controlled conveyer.
Melting
The center of the electric melting furnace is about 1600℃. The ingredients for the heatproof glass only melts at extremely high temperatures. The glass itself can act as a conductor inside the furnace and about 20 tons of glass can be melted per day.
The center of the electric melting furnace is about 1600℃. The ingredients for the heatproof glass only melts at extremely high temperatures. The glass itself can act as a conductor inside the furnace and about 20 tons of glass can be melted per day.
Mold
blowing
The 16-head automatic blow-molding machine stretches out the sphere of glass that is heated to around 1300℃. It spins the glass and gives the blow pressure and centrifugal force to form the shape. About 25 of the basic forms of the product are made per minute.
The 16-head automatic blow-molding machine stretches out the sphere of glass that is heated to around 1300℃. It spins the glass and gives the blow pressure and centrifugal force to form the shape. About 25 of the basic forms of the product are made per minute.
Annealing
The lehr (annealing furnace) heats the glass up to 620℃ and then slowly cools it, which removes the stressses that are developed. Removing these stresses makes the next processing step easier.
The lehr (annealing furnace) heats the glass up to 620℃ and then slowly cools it, which removes the stressses that are developed. Removing these stresses makes the next processing step easier.
Processing
Machine work
Once in the finishing steps, the product is processed based on the different categories using a computer-controlled chill cut machine that adjusts the size and shape of the glass.
Machine work
Once in the finishing steps, the product is processed based on the different categories using a computer-controlled chill cut machine that adjusts the size and shape of the glass.
Handwork
Products with complex and special parts, such as the neck of a syphon bowl or a glass handle, are processed by hand.
Handwork
Products with complex and special parts, such as the neck of a syphon bowl or a glass handle, are processed by hand.
Printing
Products that have been processed have designs and marks printed on them using a color auto-printer.
Products that have been processed have designs and marks printed on them using a color auto-printer.
Glazing
The prints are then baked onto the products with a baking furnace called a decorating lehr. The products are then dried.
The prints are then baked onto the products with a baking furnace called a decorating lehr. The products are then dried.
Assembling

For completion, the handles, lids and other accessories are installed, sorted into different categories and packed into boxes.
For completion, the handles, lids and other accessories are installed, sorted into different categories and packed into boxes.

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