What are the advantages of a rotomolding fuel tank over an iron fuel tank?
With the rapid development of rotomolding technology, more and more products are selected by rotomolding process. More and more engineering fuel tanks choose the rotomolding process. So compared with traditional iron fuel tanks, what are the advantages of the fuel tank，which is using polyethylene as raw material?
The advantages of rotomolding fuel tank over traditional fuel tank are introduced:
First, Light weight. When the engine power is fixed, the lighter the vehicle weight is, the greater the effective load capacity is. Therefore, from the premise of saving fuel, designers try their best to reduce the weight of the car and improve the economy of the car. Since the relative density of plastic is only about 1/7 of that of metal, the weight of plastic can be reduced by about 1/3 to half compared with the metal fuel tank of the same volume.
Second, the shape is arbitrary. Modern cars are becoming more and more compact, and there are more and more configurations in the car. Therefore, making full use of the available space on the car is an effective way to improve the utilization rate of the car. Since the process of manufacturing a plastic fuel tank is different from that of a metal fuel tank, a one-time rotational molding can be used to make a shaped fuel tank with a complicated shape.Therefore, when the general layout of the vehicle has been determined, the shape of the fuel tank can be adjusted to the space position, the remaining space of the chassis can be fully utilized, the fuel tank volume can be expanded, the fuel storage capacity can be increased, and the driving mileage of the vehicle can be increased.
Third, it will not explode. Metal fuel tank is easy to explode in case of fire. As the plastic fuel tank is made of high molecular weight polyethylene, its thermal conductivity is very low, only 1% of the metal. At the same time, high molecular weight polyethylene is elastic and rigid. It still has excellent impact resistance and mechanical properties in the environment of - 40℃ to - 60℃, and is not easy to spark when impact and friction occur. Even if the car accidentally catches fire, it will not explode due to the thermal expansion of the plastic fuel tank, and the passengers in the car have sufficient time to transfer.
Fourth, others. 100% cleanliness, anti-static, anti-corrosion, easy to handle, shockproof, impact resistant, especially in cold areas can prevent metal corrosion caused by ice and salt. Due to the high molecular weight stability, the plastic fuel tank has a long service life.
Rotomolding fuel tank has excellent corrosion resistance to all kinds of acids and alkalis. The appearance streamline is beautiful and not easy to be dirty. It can easily remove the dirt. It is economical and durable. The box body is integrally formed without any bonding point, and it is not easy to crack. It has good heat and frost resistance. The outlet joint is made of the same material as the can body. It is processed by the method of heat and melt connection, which can always save the trouble of liquid leakage.