Carbon fiber bicycle popular bicycle to sell a car price

2016-09-02

"Along with the rapid development of modern material manufacturing technology and the expansion of the bicycle market at home and abroad, advanced composite materials such as carbon fiber, silicon carbide fiber and Kevlar fiber, high performance fiber composites began to get used in bicycle industry, make traditional bicycle to high-tech production technology, eventually lead to the costliness, light-duty and new type of bicycle." A bicycle industry officials said.

The bike since born more than 200 years, the manufacturing has been given priority to with metal material, such as from ordinary steel to chrome molybdenum steel, manganese molybdenum steel, stainless steel and special steel, and aluminum alloy, magnesium alloy, titanium alloy, such as light alloy, material every update, its performance further. And carbon fiber composite material cycling, has become outstanding in the kingdom of bicycles at present, the research and development, production has developed countries all over the world.

Xi 'an institute of aerospace composites Wu Dayun thinks, carbon fiber and its composite material with high specific strength, high specific modulus, corrosion resistance, impact resistance, fatigue resistance and dimensional stability of higher a series of excellent performance. Bikes are made using carbon fiber composite materials can effectively reduce the bicycle weight in the first place. The density of carbon fiber resin matrix composites are usually is 1.6 g/cm3, is steel l / 5, the aluminum is about 40% weight loss. Be said in bicycle industry in Taiwan, "the bicycle weight reduce 1 g, price can raise $1". According to professional, on a bicycle the same structure, if the weight difference between 4 pounds (1.8 kg), the same player in 2 km trip, the weight of the car is slower, 193 feet (58.82 meters).

The whole stiffness of the body, by improving safety. Wu Dayun pointed out that the carbon fiber composite materials in the form of continuous phase in the substrates surrounded by a large number of independent existence of the fiber, the composed of multiphase material under impact, even if there is a small amount of fiber fracture, its load quickly reassigned to not damage the fiber, can make the structure bearing, greatly improved the security of the ride. And general fatigue failure of metal material is not obvious signs of accidental damage. Research shows that carbon fiber composite frame crashworthiness test can reach more than 1 million times, far more than the JIS - 100000 standard stipulated in the 9401-1984.

Is significantly improved the earthquake-resistance of bicycle again. Good frame stiffness is advantageous to the driving force of transformation, manipulate performance improvement. Carbon fiber composite bicycle structure strong, not easy deformation, and the damping effect is prominent. According to the report, for the same shape and size of frame test show that the aluminum alloy frame need to 9 seconds to stop the vibration, and only 2.5 seconds to carbon fiber composite frame can stop, good damping composite material to reduce the bike. Not only that, compared to metal, made of carbon fiber bicycle but also has good corrosion resistance. Polymer materials of acid and alkali industrial atmosphere, good performance, so the use of carbon fiber resin matrix composites made of bicycle parts have no doubt of environmental performance.

According to industry experts, although the excellent performance, but the composite material design and manufacture of bicycle far is more complex than general metal material cycling, at present our country and foreign advanced level in this field there is a big gap.

Xi 'an aerospace composite materials research institute Braun c a.manufacturing process controls, Stanley cheung, according to European and American countries such as bicycle manufacturers in close cooperation with research department, on the bike computer aided stress analysis and strength calculation, to shape the bicycle more in line with the requirements of ergonomics.

Giant companies in Taiwan and Taiwan material laboratory in 1985 to develop carbon fiber bike, in a short time is successfully developed aluminium alloy metal injection joint bonding carbon fiber bike frame. In 1988, giant companies began to batch production of joint development of carbon fiber bicycle frame, and assemble cars, has caused great repercussions in the bicycle market outside the island.

Flying pigeon bicycle (group) company in 1993, tianjin and Beijing circumnavigate company joint investment in the development of composite material bonding carbon fiber bicycle. Shenzhen Chinese bicycle company self-raised funds at the end of 1993 to build a factory, the production bike with carbon fiber tube, has now developed to welding carbon fiber tube of bicycle. In recent years, some domestic enterprises in the development of the composite bicycle also made progress, but the price is on the high side, has not been mass production and sales.

According to introducing, the home in this area started late, at present has not been mass production and application. The personage inside course of study thinks, in addition to the research, development, production technology, raw materials, also become the bottleneck of composite bicycle development in our country.

Meet wild goose new materials co., LTD. Lianyungang Zhou Hengxiang said, polyacrylonitrile based carbon fiber research in China began in the late 1960 s, due to the carbon fiber is an important military materials, abroad of our country has carried on the strict technology blockade and embargo, independent research and development of carbon fiber in China is basically give priority to. From 1976 shanxi MeiHuaSuo first PAN base carbon fiber production line was built has been boosted by lianyungang seals carbon fiber co., LTD., jilin petrochemical company, the development of weihai company has production capacity of T300 carbon fiber precursor and carbon filament. But most of the small production scale of the enterprise, only partial application military-industrial complex products, the dosage of the civilian market's largest 12 k carbon fiber only a few firms to stable production.

It is reported, a few years ago because of the high carbon fiber raw material prices, the market price of the imported carbon fiber during peak 12 k is in 500 yuan/kg, the market price of the 3 k in 2000 yuan/kg, the domestic carbon fiber is not used on the production of bicycle, so the price of a bicycle in the tens of thousands of yuan of above. In recent years, the domestic carbon fiber has been able to mature and steady production, breaking the foreign technology of carbon fiber, blockade, carbon fiber prices return to rational, now the price of domestic carbon fiber is imported carbon fiber at the height of a quarter, domestic enterprises can use the domestic carbon fiber design, the production of carbon fiber bicycle parts, carbon fiber bicycle will no longer be "high culture". "Of course, we also need to focus on craft, continuously improve the automation level of carbon fiber bicycle parts production, further reduce production cost, make carbon fiber bicycle from for a return to a reasonable price level." Zhou Hengxiang said.

Amount of bicycle production more than 100 million vehicles worldwide each year, and carbon fiber bicycle only 700000 cars, performance so superior material in the production of bicycle accounts for only a very low proportion in the total. The personage inside course of study points out, as the development of domestic carbon fiber bicycle production, production of automation level unceasing enhancement, the carbon fiber bicycle can come into China ordinary people have far too.

At present, the foreign manufacturer developed in popularizing the application of carbon fiber bicycle at the same time, to strengthen enterprise's high-tech image, they are in the development of carbon fiber bicycle vocational has also done a lot of work and novelty.

American's ear sports company in order to further reduce the weight of the carbon fiber composite material cycling, the researchers used carbon fiber grid structure to design a bicycle, adopt the structure to create lightweight bicycle only 2.5 kg, but 180 kg heavy man sit on it, bicycle can also move forward with ease. Weight of the frame to make full use of the grid structure with high efficiency, good compressive and bending resistance, resistant to damage degree tall, easy detection and repair etc, and at the same time, the structure is novel, very popular with consumers.

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