A tanker truck is a special vehicle that is mainly used to transport petroleum-derived products such as kerosene, gasoline, diesel, and lubricants. According to the function, there are two types of tankers, the oil tanker and the refuelling tanker, which are used to carry the liquid oil. It is mainly composed of oil tanks, filling ports, drain valves, manhole covers, oil hoses, grounding chains, etc.; while the refueling car not only has the function of the oil tanker, but also can be used as a mobile pump station. It has added functions such as pump oil, metering, and control devices. The tanker we see at the gas station is a refuelling vehicle. The most important thing for a tanker is its tank body. Most of the material is welded with a low-carbon steel plate. The two ends of the tank body are sealed with a head and the center is an oval interface tank. There are longitudinal and transverse wave barriers around. The interior is equipped with a partition. When the capacity is not large, the interior is a single room; if there is a large amount of oil to be installed, the entire tank body needs to be partitioned into several independent single rooms. Because when the vehicle is running, there is a certain gap in the liquid tank or it is not full, the liquid fluctuates in the container before and after, left and right, if the capacity of the container is large, the kinetic energy of the fluctuation is great, and the change of the mass center is also great. It will cause drastic changes in the axle load of the vehicle, which will seriously affect the stability of the car. Especially when the tank semi-trailer train runs uphill, if the container is large without partitions, the liquid flows to the rear of the container, resulting in a significant reduction of the axle load of the traction automobile drive shaft, which reduces the passability of the car train and makes The traction of the traction car is not fully utilized, and when the vehicle runs downhill, the liquid flows to the front of the container, which also causes the axle load of the traction car to change. Dividing a large-capacity liquid tank into several single chambers can improve the above situation. It is also possible to ship several different liquid cargos simultaneously on the same tank truck.
Thermoforming is a manufacturing process used to shape plastic sheets into various custom design products. It involves heating a plastic sheet until it becomes pliable, then using a mold or a vacuum to form it into the desired custom shape.
Thermoforming and vacuum forming are both processes used to shape plastic sheets into specific forms. However, there are some differences between the two techniques:
Thermoforming is a versatile process that is widely used in industries such as packaging, automotive, aerospace, and medical. It offers advantages such as cost-effectiveness, quick turnaround times, and the ability to produce complex shapes with high precision.
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1. Process: In thermoforming, a plastic sheet is heated until it becomes pliable, and then it is pressed against a mold using pressure or a vacuum. Vacuum forming, on the other hand, relies solely on the use of a vacuum to draw the heated plastic sheet onto the mold.
2. Mold complexity: Thermoforming is typically used for more complex shapes and intricate molds, as it allows for greater detail and precision. Vacuum forming, on the other hand, is better suited for simpler shapes and molds that do not require as much detail.
3. Material thickness: Thermoforming is often used for thicker plastic sheets, typically ranging from 0.030 to 0.250 inches in thickness. Vacuum forming is more commonly used for thinner plastic sheets, typically ranging from 0.005 to 0.060 inches in thickness.
4. Production volume: Thermoforming is generally more suitable for high-volume production due to its faster cycle times and ability to handle larger sheets of plastic. Vacuum forming is better suited for low to medium volume production, as it has slower cycle times and is limited by the size of the vacuum forming machine.
5. Cost: Thermoforming typically requires more expensive equipment and molds, making it a more costly process compared to vacuum forming. Vacuum forming, on the other hand, is a more cost-effective option for smaller production runs or prototypes.
Overall, thermoforming is a more advanced and versatile process that offers greater precision and complexity, while vacuum forming is a simpler and more cost-effective option for less complex shapes and smaller production volumes.