The mainstream models on the market today are divided into two parts by the rear door windows. Do not believe that everyone can look at the roadside cars. Most of them are like this? Why is this? Let Xiao Bian explain it.
Because the rear door is not enough to accommodate large windows, in order to ensure that the windows of the lift, to ensure normal ventilation, and take a compromise, a small piece of fixed glass, a large piece of glass can be lifted.
If you can't imagine it, look at the picture below. The outline of the front door is the red line, and the outline of the back door is the blue line.
Why are the front and rear door shapes so different? Because the back door has to make room for the rear wheel, it is designed as an oblique line or curve. This leads to the lack of space in the door to accommodate a large piece of glass. Therefore, it is divided into a large block, a small block, a small block fixed dead, large blocks can be raised and lowered. This satisfies the need for ventilation in the vehicle.
Laser processing technology uses laser beams and
Characteristics of material interactions A technique for cutting, welding, surface treatment, perforating, micromachining, and as a light source, identifying objects, etc. for materials (including metals and non-metals). The largest field of traditional applications is laser processing technology. Laser technology is a comprehensive technology involving many disciplines such as light, machine, electricity, materials and testing. Traditionally, its research scope can be generally divided into:
1. Laser processing system. Including lasers, light guide systems, processing machines, control systems and inspection systems.
2. Laser processing technology. Including laser cutting, laser welding, laser surface treatment, laser drilling, Laser Marking, laser scribing, laser micro-carving and other processing techniques.
Laser welding: automotive body thickness plates, automotive parts, lithium batteries, cardiac pacemakers, sealed relays and other sealing devices and a variety of devices that do not allow welding contamination and deformation. The lasers used in 2013 are YAG lasers, Co2 Lasers and semiconductor pump lasers.
Laser cutting: automotive industry, computer, electrical housing, wood knife mold industry, cutting of various metal parts and special materials, circular saw blades, acrylic, spring washers, copper plates for electronic parts below 2mm, some metals Stencil, steel pipe, tinplate, plated lead steel, phosphor bronze, bakelite, thin aluminum alloy, quartz glass, silicone rubber, alumina ceramics below 1mm, titanium alloy used in the aerospace industry, etc. The lasers used are YAG lasers and CO2 lasers.
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