Home > News > Content
The Production Process Of Tempered Glass Door
Jul 13, 2017

The production process of Tempered Glass Door

Tempered Glass Door with high impact strength (4 ~ 5 times higher than ordinary plate glass), large bending strength (5 times higher than ordinary flat glass), thermal stability and bright and clean, transparent and can be cut, etc. In the case of super shock damage, the debris is scattered fine grained, no sharp edges, so it is also called safety glass.

There are two kinds of steel glass door process: one is to process the normal plate glass or float glass under certain technological conditions, which is processed by quenching or cold quenching. The other is to use normal plate glass or float glass through ion exchange method, change glass surface composition, make the glass surface form a layer of pressure layer processing treatment.

The Tempered Glass Door is divided into planar Tempered Glass Doors and curved glass doors. The thickness of the flat steel glass door is 4, 5, 6, 8, 10, 12, 15 and 19mm. Surface Tempered Glass Door thickness has 5, 6, 8 mm 3 kinds. The price of Tempered Glass Door varies from thickness to thickness, with a thickness of 12mm as an example (not exceeding the previous size), the general price is 100-140 yuan/m2, and the grinding edge costs 3-5 yuan/meter. The commonly used thickness is 10mm, 8mm. The price is lower.

Tempered Glass Door is glass heated to a temperature of about 700 ℃, and then rapidly cooling, make the glass surface compressive stress, according to different degree of processing and can be divided into full toughened and semi-Tempered Glass Door (also called heat strengthened glass).

The strength of the Tempered Glass Door is 3-4 times that of ordinary glass. When the glass is destroyed by external forces, it becomes the size of the pea grain size, reducing the harm to the human body; Resistant to rapid temperature change (example: 5 mm Tempered Glass Door can be resistant to about 200 ℃ range of temperature change).

The steel glass door is divided by the quality of its appearance: the superior and the conforming products.

Tempered Glass Door according to the state of debris can be divided into: I, Ⅱ and Ⅲ class.

How to reduce the self-detonation rate of Tempered Glass Doors at normal temperature? Will be reheated Tempered Glass Door to 280-300 ℃, then heat preservation 2-4 hours, to make conditional happen since the blowout of Tempered Glass Door in the process of blasting. The homogeneity of the Tempered Glass Door is also called the detonation treatment of the Tempered Glass Door or the hot dipping treatment of the Tempered Glass Door. The probability of the molten glass door detonation will be greatly reduced, and the probability of a self-implosion of one piece of glass in one year will be less than 1% for every 10,000 square meters of glass.

If the nickel sulfide crystal appears in the tensile stress zone of the Tempered Glass Door, the self-implosion is certain to occur if the crystal type changes. Due to the uncertainty of the change of the crystal type, the self-detonation of the steel glass door at normal temperature is completely uncertain, and the detonation of the steel glass door factory is low. The steel glass door at this time can be called the real safe glass.

When the nickel sulfide crystal is transformed from alpha phase to beta phase, the volume of the crystal will change by 2-4 percent, and the diameter of the nickel sulphide crystal that causes the molten glass door is about 0.2mm. Tempered Glass Door explosive Qingdao Tempered Glass Door factory, as a result of the glass manufacturing process, the raw material or refractory material melt out of the content of some nickel impurities, these impurities in glass melting process, using each other to form the nickel sulfide crystals. More than 380 ℃ high temperature nickel sulfide crystals is alpha phase, room temperature is beta phase.

In cooling air cooling speed is very fast under the influence of glass, when Tempered Glass Door factory glass is cooled to room temperature, structure completely fixed, nickel sulfide crystals could convert low temperature state of the beta phase, but still exist in the alpha phase of high temperature. When the original glass is formed, it is necessary to pass a slow annealing process. The nickel sulfide crystal will not affect the strength of the glass. But when the glass is tempered the situation is very different. Because the Tempered Glass Door adopts the quenching process.