Special car chassis beginner basic knowledge

China's current commercial vehicles are divided into three categories: one for light vehicles, two for medium-sized vehicles, and three for heavy vehicles. In these three categories, there are seven sub-categories. In China, these three types of relatively complete manufacturers are: Liberation Dongfeng Jianghuai Beiqi Foton Heavy-duty Truck Manufacturers: Heavy Truck Shaanxi Automobile Red Rock Iron Horse Hualing Northern Benz Common Light Truck Chassis Manufacturers: Jiangling Isuzu Subdivision of Seven Small Classes Let's take ZZ1311N4711 as an example: The first “ 1 ” after the letter represents the general truck series. If “ 2 ”, it represents the full-drive series. If " 3 " represents the dump truck series, " 4 " represents the tractor series, " 5 " represents the tank truck series, and " 6 " is the passenger train series " 9 " represents the semi-trailer series. Under normal circumstances " 1 " and " 5 " can be used universally, while the " 2 " full-drive models also include: general trucks, dump trucks, tractors (gun cars, guided missile trucks) tank cars (rarely seen) Passenger cars these five small categories.
These manufacturers have their own production catalog, and its external identification model code is: Liberation CA Dongfeng EQ DFL DFAC Jianghuai HFC Beifutian BJ Northern Mercedes ND China National Heavy Duty Truck ZZ Shaanxi Heavy Duty Truck SX Chongqing Hongyan CQ Chongqing Iron Horse XC An Huai Hualing HN Jiangling JX Isuzu (Qingling) QL and so on.
The production bases and distributions of the above manufacturers are as follows: Liberation has Changchun, Qingdao, Chongqing, and Liuzhou. The main identification method is as follows: Example: The last letter of CA1170P7K2L11T4E is to identify the home base of its product. If the latter letter is A80, it will be the liberation Qingdao base, and A95 will be Liuzhou Special Steam.
Most of Dongfeng's products belong to the EQ series, including Dongfeng of Xinjiang, Dongfeng of Hubei, Dongfeng of Shenzhen, Dongfeng of Hangzhou (Dongfeng Nissan ( DN ) and Dongfeng DH ) and Dongfeng of LIU | (In the use of EQ catalog, it also obtained its own independent production catalogue for LZ. ), Yunnan Dongfeng. Hubei Dongfeng is divided into: EQ series DFL series (Tianlong Tianjin) DFAC series (Dongfeng light truck below 180 horsepower)
In addition to the above two large state-owned enterprises, other manufacturers are basically localized production, and their serial letters are very characteristic of geographical attributes.
Here I mainly explain the problem of “Steyr”: Most of the people in our automotive industry are often confused by Steyr in Shaanxi and Steyr in Shandong (China National Heavy Dumb), although they belong to different manufacturers but all Heavy trucks belong to the same class. I think this is the main reason to get everyone confused. In fact, as long as everyone understands the origins of Steyr, it will be very clear: “Steyr” was first appeared in Shaanxi as a heavy-duty automobile production line introduced by China to fill the domestic maladjustment, when the country was in Shaanxi. Established China Heavy-duty Truck Group Co., Ltd., and launched a full range of "Steyr" production lines for light, medium-sized, passenger, and heavy-duty vehicles. However, due to various reasons, Shaanxi-based "Steyr" only used heavy-duty vehicles and special-vehicle production lines. Leave other production equipment idle. In order to adapt to the development of the market, China Heavy-duty Truck Group Co., Ltd. obtained a naming rights for Shandong Heavy-duty Truck Group Co., Ltd. and obtained a set of production drawings and some equipment. Chongqing Hongyan received some technical support and production equipment. Chongqing later in the production process. The "Steyr" name is no longer used. The majority of the "Steyr" production platforms also belong to Shaanxi Zhongqi. After the separation, Shandong Heavy Duty Truck mainly focused on the development of autonomy of heavy vehicles. Since the joint venture with Hong Kong, Shandong Heavy Duty Truck Co., Ltd. has also developed the "Steyr" brand, such as: HOWO Haoyun Yellow Marshal Gold Prince and other series. (We often see in the car announcement Starsky - Steyr which has the existence of a gold prince such as: ZZ3251M3841C main identification method is: the fourth digit behind the letter is " 1 " if it is " 3 " represents "Tel" " 4 " on behalf of the Yellow River Marshal " 5 " represents Haoyun " 7 " on behalf of Hao Hao).
The meaning of the liberation chassis model: CA5253GJYP7K2L11T3E where P7 represents the high-top two-bedroom cab (if the PK2 represents a narrow-body cab) L11 represents 9.5 boxes of long T3 on behalf of the bridge E on behalf of Euro III emission standards.

Synthetic Cryolite

Synthetic cryolite is a white crystalline powder or a sandy-size granularity, and a pinkish crystalline powder or a sandy-size granularity as well. Sp.gr.2.95-3.01g/cm3, melting point about 1000°C, specific heat 1.056j/g°C at 18-100°C. It`s slightly soluble in water, but insoluble in anhydrous hydrogen fluoride. The content of its crystal water will be decreased while the increasing of the molecular ratio, therefore its loss on ignition will be also decreased while the increasing of the molecular ratio. After the paste of synthetic cryolite with different molecular ratio dehydrates, the loss on ignition at 800°C will appear 10.34%, 6.22% and 2.56% when the molecular ratio reaches 1.74, 2.14 and 2.63 reactively.

Uses:

It`s mainly used as a flux in the aluminum smelting by fused-salt electrolysis; also an opalizer in the manufacture of enamel; an opacifier and auxiliary solvent of glass and enamel; an insecticide of crops; a flux in aluminum alloy casting; and in the production of ferrous alloy and effervescing steel; as well as a wear-resistant filler for Resin and rubber-boned Abrasive wheels.

Synthetic Cryolite,Synthetic Cryolite Abrasive,Sodium Aluminum Hexafluoride,Industry Grade Synthetic Cryolite

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