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Production technology of automobile glass
Sep 17, 2018

1. Heat bending glass technology

The curved glass is made by heating and softening the plate glass in the mold and then annealing.

2. Toughened glass technology

Toughened glass is glass of a kind of prestressing force actually, to enhance the strength of the glass, use the method of chemistry or physics normally, form in vitreous surface press stress, glass bears offset above all when outside force surface layer stress, so as to improve the bearing capacity, improved vitreous tensile strength. The main good point of toughened glass has two, first it is intensity rises than common glass multiple, bending strength is common glass 3 ~ 5 times, the impact strength is common glass 5 to 10 times, increase strength while also improves security. Use safety is toughened glass The second major advantages, increase its bearing capacity improved brittle quality, even if small shards of toughened glass damage has no acute Angle, dramatically reduced the harm of human body. Of toughened glass be able to bear or endure urgent cold urgent hot property has 2 ~ 3 times than common glass, can generally be above 150 ℃ under temperature change, to prevent thermal cracking has obvious effect.

Toughened glass is processed with ordinary flat glass or float glass. Float glass requires grade a or grade a.

Production process of toughened glass has two kinds: one kind is ordinary flat glass or float glass under certain technological conditions, the quenching method or air cooling quenching method processing. The other is a ordinary flat glass or float glass by ion exchange method, the surface of glass composition change, to form a compressive stress layer on the surface of glass processing.

Tempered glass is characterized by high impact strength (4~5 times higher than normal plate glass), high bending strength (5 times higher than normal plate glass), good thermal stability, as well as smooth, transparent and cutting. In case of ultra-strong impact damage, the fragments are dispersed fine particles without sharp edges and angles, so it is also called safety glass.

Tempered glass can be divided into plane tempered glass and curved tempered glass according to its shape. Surface toughened glass thickness is 5, 6, 8mm 3 kinds.

Tempered glass is divided into two categories according to its appearance quality: excellent and qualified.

Toughened glass according to the state of debris can be divided into: I, Ⅱ and Ⅲ class.

The black edge and dividing line above are printed by screen printing, which can be done on the surface. The ink is printed through the holes of the screen, but the holes are too small to be seen by the naked eye. You can see clearly with a magnifying glass.

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