我們在義大利穆拉諾島上的製造商發明瞭一種離心機,能夠使熔融玻璃在高速旋轉後形成盤狀,再由匠人手工將盤子壓製成各種形狀。在離心機運作過程中,玻璃會自然形成不同的顏色和外貌。溫熱的玻璃成品從機器中取出後還需轉入隧道式窯爐進行低溫退火處理,這道工序的時長從幾小時到幾天不等,取決於玻璃本身的厚度。過程雖然緩慢費時,但足以保證玻璃盤更加堅固不易碎裂。
This manufacturer in Murano invented a centrifuge machine and technique that spins molten glass into discs that are then manipulated by hand into various organic shapes. During the process varying colors and finishes are applied to the glass. Still warm pieces are put through an annealing process in a tunnel oven to cool tehm slowly so they do not explode. The annealing process can take anywhere from hours to many days, depending on the thickness of the glass.
Annealing is a process of slowly cooling glass to relieve internal stresses after it was formed. The process may be carried out in a temperature-controlled kiln known as a Lehr.[1] Glass which has not been annealed is liable to crack or shatter when subjected to a relatively small temperature change or mechanical shock. Annealing glass is critical to its durability. If glass is not annealed, it will retain many of the thermal stresses caused by quenching and significantly decrease the overall strength of the glass. (from Wikipedia)