Hollow board production line
DATE：2021/5/19 8:50:29 / READ： / SOURCE：This station
Hollow board production line
Plastic fuel tank for automobileAutomobile fuel tank is one of the important functional and safety parts in automobile parts. The traditional fuel tank is made of metal, because of the particularity of metal processing, forming is difficult, and the strength of welding seam is also low, the production qualification rate is low, so it often has problems in use. In recent years, in order to reduce the weight of the car and reduce the cost, it has been transformed from metal materials to plastic materials.
Plastic fuel tank can well solve the problems of metal fuel tank. After the process, chemical production, chemical prevention and control technology, the government has improved the working condition of Anjin
Compared with the net volume of golden rotten hot oil, its weight can be greatly reduced, which is conducive to the weight of light vehicles, its periodic injection, the set value of approval technology, material and its opened strand, and the actual removal of maintenance and control items, @ the relative density of plastic is only 1 "field of metal
In order to use the soft oil which can be used for daily use, and improve the vehicle's navigation power (e.g. Passat plastic Dexin)
5 kg, capacity 51 L, safety factor 7 L, compared with metal fuel tank, capacity 6 L, weight 1.5 Ke)@ The oil flow of the molding material has good thermal brilliance, and the key point in the fire times of the vehicle is that the silver will not heat up quickly and may explode late, so as to increase the survival hope of the passengers in the accident@ The durability of plastic fuel tank is excellent. It has excellent long-term stability. The service life of the oil tank can reach 20 years. When encountering collision, the plastic fuel tank still has excellent impact resistance and other mechanical properties at - 40 ~ 60C. Under normal temperature, the fuel tank with single layer or multi-layer structure is not easy to be damaged even if it falls to the cement ground from 8m to 10m, while the metal fuel tank will be damaged only when it falls from 8m to 10m. It can be seen that the impact resistance of plastic fuel tank is 2 ~ 4 times of that of metal fuel tank, and the @ fuel energy is small, according to ECE regl. No. 34 standard. After 56 days in (402) environment, the maximum average fuel loss was 20g / 24h. Due to the small amount of fuel leakage and less fuel evaporation pollutants discharged into the atmosphere, it is conducive to reducing environmental pollution. The plastic fuel tank with multi-layer composite structure has less fuel leakage, and its maximum average fuel leakage is less than 2G / 24h, which can fully meet the requirements of American shed standard.
Rotary molding: the light metal mold can be installed on the frame of rotary molding machine for three-dimensional rotation. The plastic powder is wrapped in the hot mold. When rotating, the plastic powder continuously melts and adheres to the inner wall of the hot mold until the required thickness is achieved. Inject cold water into the mold jacket for cooling, and then demould the product. The disadvantage of this method is that it is difficult to ensure the uniformity of wall thickness at corners and narrow sections.
This method is usually not used because it can fully meet the requirements of automobile fuel tank@ Cationic polymerization (monomer casting); Cationic polymerization is the process of injecting caprolactam monomer into heated rotary mould, ionic polymerization, cooling and demoulding. Its advantages are low cost of mould and easy painting. As this method is limited to casting nylon, it can not be used
Injection molding: due to the limitation of demoulding, the injection molding process is used to produce the fuel tank, which needs to be divided into two parts, and then used for injection molding
The parts of the utility model are integrated by injection@ In vacuum type, the plastic plate is heated, and the two-part fuel tank is made by vacuum molding, and then the fuel tank is reused. The qualified rate of production is low.
Author：admin