Rust proof function of car plate processing should not be ignored
CCTV 315 evening exposure Jianghuai Tongyue car using general steel plate instead of better corrosion-resistant galvanized plate, forming steel plate rust. Most owners find their vehicles more or less rusty after more than a year. The first batch of heavily corroded car owners have now undergone a cut-off skirt treatment, but still can not prevent the spread of body rust to the vicious development of the beam.

In the past, consumers paid more attention to whether the car body is strong or not. In the impression of many consumers, the thicker the body steel plate, the safer it is. In fact, the car industry has developed to this day, it has been unable to judge whether the car body is safe simply from the thickness, and the steel plate strength and rust prevention function is worthy of attention.
In modern car production, the most widely used low-carbon steel plate is still used. Low carbon steel plate has a good plastic processing function, strength and stiffness can also meet the requirements of car body, together with the requirements of car body tailor-welded, so it is widely used in car body. Some high strength steel sheets are used in the interior panel of the car, such as the roof panel, the interior panel of the door watch, the engine compartment cover, the luggage compartment cover and so on. However, the appearance of these steel plates have to undergo some special treatment, can be useful to avoid steel rust, and then affect the strength of the steel plate.
Reporters learned that galvanized steel sheet is to avoid corrosion of the steel sheet surface to extend its service life, in the steel sheet surface coated with a layer of metal zinc and manufactured. But the general steel plate, especially the high carbon content may be in the imperfect rust prevention treatment, very simple rust situation. This is the main reason for the rust of Jianghuai Tongyue car steel plate, which has seriously affected the bump safety function of the car body.
The reporter interviewed the State Key Laboratory of Advanced Planning and Manufacturing of Car Body of Hunan University on car body safety. Researchers informed reporters that the thickness and strength of steel plates on the car's safety has a certain effect, but not the first, the body of passive safety appropriate disorder, the body's structure, shape, stiffness, load-bearing ways, structural energy absorption area planning, including two aspects: the body as a whole and binding system The restraint system mainly includes seats, steering wheels, seat belts and other passenger peripheral parts. These parts simply deform when bumping, causing damage to passengers. The overall body planning includes front suspension and rear suspension, which can absorb kinetic energy. The damage degree to the head and chest of passengers is the most important consideration in evaluating the bump test of car safety, which is not directly related to the thickness of steel plate.
Now the car has been widely used galvanized steel sheet, thickness of 0.5 to 3.0 mm, of which the body cover is mostly 0.6 to 0.8 mm galvanized steel sheet. Consumers should pay more attention to steel plate material and overall safety equipment when buying cars.
A thin layer of membrane has many ways to go.
Claiming to be originated from "Israeli military technology" car sticker brand Coosidy, Santa Roh claimed not to enter, and has a number of national certification letters, the most expensive to sell to 30,000 yuan, it was also shot in 3?15. Authoritative departments test results show that the two products are not up to the relevant national product specifications, car sticker market chaos also exposed.
In the Changsha shopping mall, there are more than 2,000 brands of automotive coatings, ranging in price from several hundred to tens of thousands of yuan, ranging from "tea-colored" coatings on a polyester film, which can only insulate light and ultraviolet rays, to explosion-proof coatings with metallic elements that can prevent glass from splashing, from solar films that can prevent heat, to the latest ultraviolet rays. The "smart spectrum selection film" for thermal insulation and explosion protection has many thin doors.
Qiu Gang, general manager of Weigu China, informed reporters that the regular car coating process is more messy, including anti-wear layer, metal insulation layer, colored PET safety bottom layer and other different functional layer composition, and many of the Shanzhai film is basically "only a layer of plastic", not only can not play an anti-ultraviolet, thermal insulation effect, but also It also has poor durability, blister and light transmittance. In addition, in order to save costs, the film will use residual glue, tear off when the release of toxic gases.
"There is no so-called original film, 4S shop said that the special film is generally car manufacturers and a film brand open cooperation recommended by the use of." In some 4S stores where new cars are purchased, the manager of the exhibition hall notified reporters that the cost of the car film is usually several hundred yuan, but it is claimed to be more than 2000 yuan.
Reporters understand that, in addition to the public security department on the car before the wind shield transmittance of more than 70% of the rules, the state on the film shop and no special norms, Weigu China's general agent sales director Liang Qiaojun informed reporters, car film development to date, the first effect is to avoid ultraviolet radiation. Otherwise, when the window glass of the car is broken, it will form into a piece and will not splash, which is its explosion-proof function. Therefore, some of the so-called explosion-proof and bullet-proof functions advocated by the film on the contrary bring potential safety hazards, because once the risk is presented, it is difficult for the people in the car to escape from smashing the windows inside the car.