althoughcarThe glass industry and the glass industry belong to two different industries. The former belongs to the machinery manufacturing industry and the latter belongs to the light industry. However, from the perspective of the development of automobiles, the relationship between the two is getting closer and closer. Glass technology has completely penetrated into the automotive industry and has become an indispensable member in the field of automotive technology.Now, people always research and develop from the perspective of car safety and appearancecar windscreen, And constantly introduce new varieties. Automobile glass used to be mainly windshield. As early as more than 80 years ago, glass was installed on the T-car produced by the Ford factory in the United States. At that time, flat glass was installed on the front end of the compartment, which freed the driver from wind and rain. In the decades since then, the glass industry has gradually stepped into the automotive industry, creating a variety of safety glass-laminated glass, tempered glass and regional tempered glass, which greatly improved the performance of automotive glass.
Among them, laminated glass refers to the use of a transparent adhesive plastic film attached between two or three layers of glass, which combines the strength and toughness of the plastic with the rigidity of the glass, which increases the resistance of the glass to breakage. Tempered glass refers to the quenching of ordinary glass to form a certain internal stress in the internal structure, thereby strengthening the strength of the glass. When it is impacted and broken, the glass will split into small pieces with blunt edges, which is not easy to cause damage to the occupants.
Regional toughened glass is a new type of toughened glass. It has been specially treated to ensure that the cracks of the glass can still maintain a certain degree of clarity when it is broken by impact, ensuring that the driver's field of vision is not affected. At present, the automobile front windshield is mainly composed of laminated tempered glass and laminated area tempered glass, which can withstand strong impact.
The appearance of modern cars is closely related to the development of glass craftsmanship. As early as more than 40 years ago, the front windshield of a car had adopted a single-piece curved windshield, and gradually abandoned the flat windshield. Today's car windshields are generally made of a large curved surface, with a certain degree of curvature on the top, bottom, left, and right. This kind of curved glass is a product with very high technical requirements, whether from the processing process or from the coordination of assembly, because it involves many issues such as car models, strength, heat insulation, and assembly.
The car windshield adopts curved glass, starting from the perspective of aerodynamics. Because the normal speed of modern cars is mostly more than 100 kilometers per hour, the oncoming air flowing through the curved glass can reduce turbulence and turbulence, thereby reducing air resistance.
Coupled with the smooth transition between the edge of the window frame and the surface of the car body, the glass and the car body are integrated, visually feeling the overall coordination and beauty, and can reduce the drag coefficient of the whole vehicle. In addition, curved glass has higher strength, and thinner glass can be used, which has a certain significance for the lightweight of cars.
The curved windshield of a modern car must have a high degree of flatness at the curved corners, without optical distortion, and viewing external objects from any angle on the driver's seat will not be deformed or dazzling. In the past, car glass was usually decorated or protected with neat strips along the edge of the glass. Now the glass on the car uses ceramic glaze, the so-called "black frame."
Many car windshields are also coated, using reflective coating technology or improving the composition of the glass, allowing only visible sunlight to enter the cabin, blocking ultraviolet and infrared rays, and greatly reducing the heat suffered by the occupants. This kind of modern car glass called "green glass" has been widely used. (Dahe Net)
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