High-end equipment manufacturing is an important direction for future development, but there are currently problems such as weak basic research, lack of advanced manufacturing methods, and high energy consumption in the manufacturing process, which severely restrict the development of the industry. Additive manufacturing (3D printing) has become the key technology to achieve this breakthrough. However, due to the three major problems of low efficiency, high cost and difficult quality control, it has become the main bottleneck for the realization of industrial applications at this stage.
In order to strengthen the “production, study, research and application”, the team innovatively integrated 3D printing and supersonic cold spray technology, and proposed the advantages of supersonic laser pointer deposition technology combined with cold spray and laser pointer cladding, which has high deposition efficiency, low temperature and low cost. , High performance and other advantages, it is a new type of metal additive manufacturing technology with great potential. In the laboratory, pointing to a blade to introduce to the reporter, “Take the steam turbine blade as an example. This technology can make a breakthrough in its corrosion resistance.”
Turbine blades with high corrosion resistance are sold at a unit price of 20,000 to 30,000 euros in the international market, which is equivalent to the price of an Audi. However, more than 1,000 different types of blades are needed in a domestic one million generator set. As the use time increases, the windward parts of the blades will be damaged, which is bound to require maintenance or blade replacement after the generator set is shut down. But with new metal additive manufacturing technology, this phenomenon can be fundamentally changed.
On the one hand, the maintenance cost of existing blades can be greatly reduced, and the damaged blades can be repaired by metal 3D printing with higher-strength materials; on the other hand, in the manufacturing process of new blades, in addition to green laser pointer surface strengthening In key parts, higher-strength materials can be used for integrated printing and manufacturing, which greatly improves the service life of the blades. It is expected that the new additive manufacturing technology will increase the efficiency and performance of the current single laser 3D printing at least several times, and The cost does not increase but decreases.
The team will continue to promote the transformation of scientific research results into actual productivity, use technological innovation to drive the economic transformation and upgrading of Zhejiang Province, and provide key technical support for the transformation and upgrading of Zhejiang and even the nation’s manufacturing industry. In our process, because the laser pointer is constantly moving, it is much more complicated to control. On the other hand, the test is carried out on laboratory equipment used in universities. To use this process on an industrial scale, it is very important to use more powerful, different lasers to test on different materials, and so on.