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For the current rapid rise of 3D printing, He Qinghua appears calm. “The depth and breadth of 3D printing introduced by different industries may be different. The manufacturing industry is relatively traditional and may not be used in large areas at the moment,†but he changed his mind. “This is not to say that 3D printing is useless. In fact, our Wuxi manufacturing base has begun to adopt this technology in the ginning casting process. We have our own intellectual property rights, but it is still produced in small quantities."
He Qinghua told us that the design of some parts is very complicated. Because the design is not yet mature, if you open the mold and open the metal mold, the cost will be very high. Now with 3D printing, although the efficiency is relatively low, when the production volume is not very large, you can use 3D printing model, print it out according to the design, and then modify it easily.
With the increase of output, whether to continue to use 3D printing this method depends on the efficiency of the 3D printing technology itself. If the technology is mature, it may replace the existing method in many cases. "So, we can only use 3D printing when it meets the current performance and the cost is acceptable. We can't just use 3D printing to get trendy. It's not enough. But it is definitely a direction. As for future 3D printing, it will be The development of the industry, I think it is still difficult to predict.†He Qinghua said.
In fact, He Qinghua's attitude towards 3D printing is mainly tangled in two points: one is the printing efficiency, and the other is the technological maturity. He believes that 3D printing uses laser methods or other methods to melt the material and then connect it, from point to surface, from surface to space, so how to improve the efficiency of 3D printing is an important issue that must be resolved. The technology maturity involves various processing steps of materials, such as heat treatment on the manufacturing process, to achieve the process requirements of traditional methods through 3D printing, such as the mechanical properties of the material, chemical properties, stability, strength, etc. itself is not easy. For this reason, 3D printing is still only used in the toy industry.
China lacks a dedicated research team He Qinghua always keeps a clear understanding of the growing Chinese manufacturing industry. He frankly admits that China's equipment manufacturing industry has obvious shortcomings in special processing, special materials, and special heat treatment. The reason for this is that the threshold for entry into the equipment manufacturing industry is relatively high. It requires a lot of money to be invested, and the output is limited. Achieving a leap will require a process of accumulation.
In addition, He Qinghua believes that China's manufacturing industry is lacking in excellence. He told reporters that he had gone to France to negotiate a cooperation project on aero-engines. He met several French companies and found that each of them had done one thing for many years, such as specializing in preventing overheating. “There are too few professional R&D teams in China. We have a so-called fresh idea and eat all over the sky. China lacks some very accurate companies that are doing in a certain area. This has caused a lot of inaccuracies in our products. This may be related to our society. More impetuous related." He Qinghua said with emotion.
Made in China towards Digital Development
He Qinghua believes that digital design and digital manufacturing provide the most powerful tools for the Chinese to catch up with the advanced world level. For example, he said that the surface of an accessory for a screw-type air compressor is very complicated, and each company has its own unique curved surface for efficiency. This surface is difficult to machine with conventional machine tools and is manufactured by special machine tools. These special machine tools are all made by foreign companies relying on years of accumulated technological processes. Chinese companies have no money and no technical deposits. It is difficult to cross this road. But with digitalization, the problem is much simpler. "Digital design and digital manufacturing are very important tools. Otherwise, it will be difficult to accumulate years of experience and surpass the world advanced level by human experience. Now I am very confident," He Qinghua said.