The automobile has brought great convenience and convenience to the travel of human society. It can be said that it has become one of the indispensable tools in people's lives. In recent years, the development of the domestic car rental industry has provided the travel conditions that could not have been enjoyed in the past for the “books†outside the car race and the travel of business travelers. The status quo of the rise of the local car rental industry is increasingly clear. For example, the success of a car rental on the NYSE IPO confirms the unlimited potential of the industry.
According to official data, China’s auto drivers have exceeded 200 million, and the number of drivers with a driver’s license is approximately 3 times that of a car population. Under the stimulation of increasingly large demand for vehicles and restrictions on purchases, there is no doubt that car leasing is widely used in China. foreseeable.
As we all know, the increasing number of car ownership in China's first-tier cities in recent years has brought problems such as difficult parking, serious congestion, and air pollution. If China’s automobile penetration rate reaches the level of the United States, by the time China’s population reaches 1.5 billion by 2050, China’s auto ownership will exceed 1 billion vehicles, not only more than the sum of the global auto ownership, but also the energy, land, and The pressure caused by the environment will far exceed the present, and it is unacceptable.
According to statistics, one car of the car rental company can meet the demand of about 40 users. After the demand for 1 billion vehicles in China is absorbed by the car rental industry, it is expected to be reduced to 25 million vehicles, and the city will be able to get a smoother flow. Transportation, adequate parking spaces, clean environment, and increased utilization of automotive resources are also the true meaning of the development of the car rental industry.
In the past few years, through the constant innovation, the chain car rental industry represented by a car rental car has made the car rental related service process more convenient and complete. The car rental, car collection, and car retiring have been greatly simplified, and the scale development has also made Car rental fees have become more favorable and ordinary families are fully able to accept them. In addition, the introduction of various humanized and targeted car services, such as returning cars in different places, delivering cars to homes, and providing 24-hour service, also make it easier for them to accept car rentals and develop the habit of car rental.
Industry insiders pointed out that the car rental industry with the concept of car sharing will become the cornerstone for the Chinese people to enjoy the benefits of travel in the automobile society, and it will also bring more ideas to solve the series of urban diseases and promote low-carbon emission reduction.
Aluminum roll is widely used in electronics, packaging, construction, machinery and other aspects, our country's aluminum roll production enterprise is more, the production technology has caught up with developed countries, according to the metal elements aluminum roll contains are different, aluminum roll can probably be divided into 9 big categories, that is, can be divided into 9 series, are roughly introduced:
1000 series
On behalf of 1000 series aluminum plate is also known as pure aluminum plate, in all series 1000 series belong to a series containing the most aluminum. Purity can reach more than 99.00%. Because it does not contain other technical elements, the production process is relatively simple and the price is relatively cheap. It is the most commonly used series in conventional industry at present. Most of the 1050 and 1060 series are in circulation in the market. The minimum aluminum content of 1000 series aluminum plate is determined according to the last two Arabic digits of this series, such as the last two Arabic digits of 1050 series is 50. According to the international brand naming principle, the aluminum content must reach more than 99.5% for qualified products. China's aluminum alloy technical standard (gB/T3880-2006) also clearly stipulates that the aluminum content of 1050 can reach 99.5%. In the same way, the aluminum content of 1060 series aluminum plate must reach more than 99.6%.
2000 series aluminum plate
On behalf of 2A16 (LY16) 2A06 (LY6) 2000 series aluminum plate is characterized by high hardness, among which the content of Copper is the highest, about 3-5%. 2000 series aluminum plate belongs to aviation aluminum material, is not often used in conventional industry. Our manufacturers of 2000 series aluminum plate are few. The quality cannot be compared with abroad. Korean and German manufacturers mainly supply the imported aluminum sheet. With the development of Chinese aerospace industry, the production technology of aluminum plate in 2000 series will further improve.
3000 series aluminum plate
Indicates 3003 3003 3A21. It can also be called rust-proof aluminum plate. Our production process of 3000 series aluminum plate is excellent. 3000 series aluminum plate is made of manganese element as the main component. The content is between 1.0 and 1.5. It is a series with good rust prevention function. Commonly used in air conditioning, refrigerator, car under humid environment, price higher than 1000 series, is a more commonly used alloy series.
4000 series aluminum plate
On behalf of 4A01 4000 series of aluminum plate belongs to the high silicon content of the series. The silicon content is usually between 4.5 and 6.0%. It belongs to building materials, mechanical parts, forging materials, welding materials; Low melting point, good corrosion resistance Product Description: With heat and wear resistance
5000 series
Stands for 5052.5005.5083.5A05 series. 5000 series aluminum plate belongs to the more commonly used alloy aluminum plate series, the main element is magnesium, the magnesium content is between 3-5%. Also known as aluminum magnesium alloy. The main characteristics are low density, high tensile strength and high elongation. The weight of aluminum magnesium alloy is lower than that of other series under the same area. Often used in aviation, such as aircraft fuel tanks. It is also widely used in conventional industry. The processing technology is continuous casting and rolling, which belongs to the hot rolled aluminum plate series, so it can do oxidation deep processing. In our country 5000 series aluminum plate belongs to one of more mature aluminum plate series.
6000 series
Represents 6061 mainly contains magnesium and silicon two elements, so concentrated the advantages of 4000 series and 5000 series 6061 is a cold treatment aluminum forging products, suitable for corrosion resistance, oxidation requirements of high applications. Good usability, excellent interface characteristics, easy coating, good processing. Can be used in low pressure weapons and aircraft joints.
General characteristics of 6061: excellent interface characteristics, easy coating, high strength, good usability, strong corrosion resistance.
Typical uses of 6061 aluminum: aircraft parts, camera parts, couplers, Marine fittings and hardware, electronic fittings and joints, decorative or various hardware, hinge heads, magnetic heads, brake pistons, hydraulic pistons, electrical fittings, valves and valve parts.
7000 series
Represents 7075 mainly contains zinc. Also belongs to aviation series, is aluminum magnesium zinc copper alloy, heat treatment alloy, belongs to super dural alloy, has good wear resistance.7075 aluminum plate is stress-relieved, after processing will not deformation, warping. All super thick 7075 aluminum plate by ultrasonic detection, can ensure that no sand holes, impurities.7075 aluminum plate has high thermal conductivity, can shorten the molding time, improve the work efficiency. 7075 is a high hardness, high strength aluminum alloy, often used in the manufacture of aircraft structure and futures. It requires high strength, corrosion resistance of high stress structural parts, mold manufacturing. Rely on import basically, our country production technique still need to be improved. (The company once had a foreign company proposed that the domestic 7075 aluminum plate annealing is not uniform, the surface and internal hardness of aluminum plate is inconsistent)
8000 series
The more commonly used 8011 belongs to other series. In my memory, aluminum plate is mainly used for bottle caps. It is also used for radiators, most of which are aluminum foil. It's not very common.
9000 series
Belongs to the standby series, so developed technology, in order to cope with the appearance of aluminum plate containing other alloying elements, the international aluminum plate Federation shows that 9000 series for the standby series, waiting for a new variety to appear to fill the gap of 9000 series.
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Shandong Longhao Steel Group Co., Ltd. , https://www.longhaosteels.com