Compared with last year's FNX-16, the FNX-17 of CRT Racing Team of the School of Turbine and Steam Turbine of Changsha University of Science and Technology continued its mature experience in previous years and applied 3D printing technology to achieve lightweight and high-quality racing cars. Its steering wheel, column, air intake assembly, rocker and other key components are 41 Hua Shu Gaoke advanced 3D printing technology, of which 60% of the metal 3D printing technology. Car parts match seamlessly, body design, structure, lightweight and other properties more excellent, curb weight is only 225KG, after the installation of the maximum speed limit valve up to 140Km / h.

FNX series car, the name comes from the "Phoenix" the word, a symbol of the Phoenix Nirvana meaning, but also reflects the continuous innovation of CRT team, keep making progress. The car inherited the essence of the fleet design concept, a lot of innovation, and the use of Hunan Huashu high-tech limited liability company a number of 3D printing design and manufacturing technology.

From design to final completion, they spent a whole year. In FNX-17 design and manufacturing process, the use of a large number of virtual simulation analysis and optimization methods to achieve the vehicle lightweight, reliability and vehicle performance optimization. Such as through the hub spoke integrated design, 3D printing wheels, the total weight of the wheel 2kg. More using the same specifications of the ear or installation of joints, improve the versatility of parts and shorten the design and manufacturing cycle.

The integrated structure of the spoke wheel hub enables the car to achieve a better weight reduction. If the traditional method of reducing material consumption is used, the material removal rate will reach as high as 93%, resulting in serious waste. Metal 3D printing technology can make such shaped parts integrally formed. Surface-type parts manufacturing has the absolute advantage.

At the same time, the other performance of the car is also optimized. For example, the design of the coupling of the tripod shell improves the maintainability of the system. The dry lubrication system improves the lubricating performance of the engine when the car turns at a high speed, and the electric pump accurately controls Engine water temperature range to improve vehicle reliability, the use of electric pneumatic shift to achieve the start control and automatic upshift, shorten the shift time, the use of electronic throttle to improve the throttle response speed and accuracy and so on.

Changsha Polytechnic University and Hunan Huashu High-Tech Co., Ltd. have been cooperating since 2013 and have applied 3D printing technology to the Formula One race for four consecutive years. FNX-17 Hua Shu Gaoke customized version of racing, this year the team and its co-developed a racing car, and will serve as Gao Hua Gaoke 3D printing technology in the automotive industry demonstration.

Dozens of car racing on the shape and complexity of the complex components, the traditional processing difficult components, CRT team launched a 3D printing design and manufacturing. Such as two-in-one exhaust system interface, intake manifold and intake manifold, suspension system column, steering system support structure and steering wheel, most of the aerodynamic package. After 3D printing, the racing parts and components have been optimized and designed by Huashu Hi-Tech engineers and Changsha Polytechnic CRT Racing Team, taking into account the dual requirements of light weight and strength, which are of great significance to the performance improvement of racing fuel economy and safety.

The exhaust manifold with metal 3D printing, including its two-in-one manifold, eliminates the problems of poor sealing due to traditional soldering processes and smoothes the inner wall of the manifold to a smoother post-weld But also greatly reduced; the other hand, from the actual level of processing restrictions, the manifold shape can be completely based on simulation analysis of optimized data to make design intent to be the best embodiment.

There are 41 parts on the car that are using 3D printing technology and there will be more car parts available for 3D printing in the future. 3D printing is not only manufacturing technology, more designer's design opened up a whole new world. Taking the racing engine intake system as an example, a series of simulation and optimization of the new 3D racing racing air intake system are carried out. Based on the uniform flow of the intake system, the engine inflation coefficient is improved. Based on the 3D printing technology Intake manifolds allow designers to maximize the potential of the intake system without being subject to conventional machining processes.

Adopting nylon 3D printing technology to print the air inlet cavity, effectively avoiding the limitation of the traditional processing technology and meeting the requirements of light weight and high strength of the racing car.

Industrialization of 3D printing technology is developing rapidly, especially in the fields of automobile and aerospace. Formula racing is a typical automotive application that can fully exert the unique advantages of metal and nylon 3D printing.