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Heat soaked glass
Tempered heat soaked glass has similar characteristics to tempered glass. The process begins with heating tempered glass to 290 ºC and remaining at that temperature for 2 hours, which does not affect any properties of tempered glass. The overall process is more than 4-5 hours as it has to begin with normal temperature until reach high degree at 290 ºC, following by decrease it to ambient temperature afterwards.
The main purpose of this action is to accelerate molecules of nickel sulfide (NiS) until tempered glass contained with NiS break in heat soaking furnace. This conduct is waste of energy as the chance of contaminating NiS is only 8 from 1,000 sheets. In some areas, it is important to ensure that there will be no spontaneous glass breakage because it is complex to substitute new glass, and assuredly come with a high cost of installment. Areas required high security are necessary to use tempered heat socked glass as well. Please be informed that tempered heat soaked glass still has a possibility of spontaneous glass breakage phenomenon; however, the risk will be lowered from 8 from 1,000 sheets to 4 from 10,000 sheets (reduced by 95 percent).
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