Scandium alloy can achieve a light weight close to that of carbon fiber under the condition of obtaining safe impact strength in terms of light weight, but it can still maintain very high rigidity, and even can be extended to the limit wall thickness of 0.6mm aluminum alloy. The aluminum alloy frame is favored by many riders in the cycling circle, and has occupied a large part of the cycling market with its more beautiful appearance and coating, higher cost performance, lighter weight and other cutting-edge frame technologies.
Scandium alloy frame can greatly improve the strength of the frame. The use of tube drawing technology can make the frame thinner and lighter. However, the price of a sufficient amount of scandium is bound to be very expensive. It makes the weight lighter while ensuring the strength. The weight is basically close to that of carbon fiber, but the price is very expensive. The price of scandium alloy used in the frame of more than 1000 grams is more than 1000, not including the cost of aluminum alloy and manual processing.
The vast majority of modern cars have a frame as the frame of the whole vehicle. Most parts and assemblies of the automobile are fixed by the frame, such as the engine, transmission, suspension, steering system, cab, cargo box and related operating mechanism. The frame plays the role of supporting and connecting various parts of the vehicle, and bears various loads from inside and outside the vehicle. The structural form of the frame shall first meet the requirements of the general layout of the vehicle. In the complex driving process of a car, the assemblies and components fixed on the frame should not interfere with each other. When a car is traveling on a rough road, the frame may produce torsional deformation and bending deformation in the longitudinal plane under the load.
When one wheel encounters an obstacle, the whole frame may also be twisted into a rhombic shape. These deformations will change the relative positions of the components installed on the frame, thus affecting their normal operation. Therefore, the frame shall also have sufficient strength and appropriate stiffness. In order to improve the lightweight level of the whole vehicle, the frame mass is required to be as small as possible. In addition, the frame should be arranged closer to the ground to lower the vehicle's center of gravity and improve the vehicle's driving stability. This is particularly important for passenger cars and sedans.
