Ceiling light PT017-8+4 - PT017-8+4

How to produce the glass? This problem may be simple for experts but for ordinary consumers may be interested to learn more.The glass manufacturing process comprising the step of batching, melting,forming, annealing, etc....

1. Ingredients, square single material in accordance with well design, after weighing out various raw materials and mixed in a blender uniform. The main raw material of glass: quartz sand, limestone, feldspar, soda ash, and boric acid.

2. Melting, with good raw material heated at high temperatures to form a homogeneous bubble-free liquid glass. This is a very complex physical and chemical reaction process. The melting of the glass inside the furnace. Most of the melting temperature of the glass in 1300 ~ 1600 0C.

3. Forming, it is to put melting glass into a solid product with a fixed shape. Forming must be made within a certain temperature range, which is a cooling process.the glass must be first go by a viscous liquid plasticizer state, then transferred into a brittle solid state. The molding method can be divided into manual forming and mechanical forming two categories.

4. The annealed. glass molded subjected to intense temperature change and the shape change, this change in the glass leaving the thermal stress. This thermal stress will reduce the strength and thermal stability of the glass article. If cool directly , it is possible to rupture in the cooling process or after storage, transport and use of the process itself (commonly known as a cold glass Crit). In order to eliminate the phenomenon of cold Crit, glassware must be annealed after forming. Annealing insulation or slow cooling for a period of time in order to eliminate or reduce the thermal stress in the glass to allow the value is within a certain temperature range.

In addition, some glass products in order to increase its strength can be stiffening process. Include,physical stiffening (hardening) for thicker glass, desktop glass, windshields, etc.; stiffening and chemical (ion exchange), used to watch the windshield glass, Aero Glass. Stiffening of the principle is the compressive stress is generated in the glass surface layer, in order to increase its strength.