What Material is Used for Automotive High-Pressure Cylinders?
2 Answers
Automotive high-pressure cylinders are typically made of cast iron (with ductile iron being the best material) and aluminum alloy, which are considered superior choices. Introduction to High-Pressure Cylinders: They are a component of steam turbines, available in single-flow and double-flow configurations. Similar to steam turbines, they are referred to as steam turbine engines internationally. Classification of High-Pressure Cylinders: High-pressure cylinders can be fixed with single or double arms via external threads. Their diameters range from 25 to 40 mm; they are categorized into single-acting and reciprocating types; and their rotation angles vary from 0 to 180 degrees. Rotary cylinders can automatically position the pressing arm onto the workpiece for clamping and retract to the original position after machining is completed.
After driving CNG vehicles for so many years, I've found that the material of the high-pressure cylinder is crucial. It's mainly about the gas storage tank section. Older versions mostly used high-strength steel, which is indeed sturdy but makes the vehicle heavier and affects fuel consumption. Modern improvements use aluminum alloy as the inner lining, wrapped with a layer of carbon fiber composite material. This ensures it doesn't burst under high pressure while being lightweight. A lighter vehicle accelerates faster and saves fuel on long trips. In terms of safety, composite materials are less prone to fragmentation, reducing risks during collisions. Maintenance requires attention to corrosion issues and regular checks on seals to prevent gas leaks. Overall, when choosing a vehicle, the material affects long-term usage experience, so I recommend opting for the new composite type.
