And there are many such stories in the country.

With Li Yifan's influence, the other one with the most famous one is probably Professor Yao Chongshan from Bincheng University of Technology, where he is from his hometown.

Professor Yao is a professor in the School of Materials Engineering at Bincheng University of Technology. In this year, he had just graduated with a doctorate. It was during this period that when he was reading foreign scientific research materials, he noticed a new technology such as 3D printing.

Professor Yao was a founding major when he was in the undergraduate program and had a deep understanding of the domestic casting industry and the backwardness of materials science.

He once learned after graduating from his PhD that if he wanted to create a world in the domestic casting industry, it would be almost impossible based on the current domestic material science foundation.

After all, if you want to make a breakthrough in the field of casting, you must have material alloys that can keep up with international standards. If you want to work hard on material alloys, then there is no other shortcut to take besides decades and trillions of dollars in capital investment.

In this regard, whether it is time or capital investment, it is simply impossible in the current domestic scientific research environment.

After all, we are not a little behind foreign countries in the field of materials science. If we want to keep up with the pace of foreign countries in this field, we must find another way out, and it is best to be able to overtake on detours.

It was at this time that he began to learn about the new technology of 3D printing technology.

So from that time on, he began to contact some like-minded colleagues and began to form a team to work hard on 3D printing technology.

After ten years of uninterrupted efforts, he led his team and finally built the world's largest printer, and it was a world-leading printer.

The most important thing is that the printer developed by him and his team can be used in the field of metal casting processing.

Since the birth of 3D printing technology, some people have asserted that this technology is just a gimmick, and it is impossible to truly replace the existing metal processing industry.

The reason is very simple, because of modern metal processing. Some special superhard metal alloys are often processed, and these metal alloys are processed into various mechanical parts you need.

However, such functions are exactly what 3D printing technology does not have.

Because the basis of 3D printing technology is to melt different materials, and then spray these materials through the nozzles according to the settings of the computer program, according to different motion trajectories, then stack them layer by layer, and finally form them.

The key is the melting of this material. The current melting material technology cannot reach the point of melting super hard metals.

Even if you develop laser sintering technology and use high-intensity and high-temperature lasers to melt metals, you will also face the problem of quenching and annealing.

You should know that many super hard special alloys will have several quenching or annealing processes during smelting and processing to ensure the characteristics of these metals after they are produced.

During the subsequent processing, if these metal casting blanks encounter high temperature heating and melting, they will cause annealing problems. Even if you solidify this metal using cooling technology again.

However, some characteristics unique to this metal, such as corrosion resistance, high temperature resistance, high strength, and high life, will be lost with this annealing process.

This causes 3D printing technology to face the problem of changing material characteristics when processing metals.

For example, the special bearings required for high-speed trains are required to be used, which require corrosion resistance, high temperature resistance, wear resistance and durability.

This requires selecting a specific and suitable special steel material when processing this bearing. After casting into blanks, this special steel can be put down on the machine tool for reduced processing. If a five-axis CNC center is used, it is very likely that it will be processed and molded in one go.

However, if 3D printing technology is used, although it will save more material and time, during the processing process, you must melt the blank material using laser sintering technology, and then spray and superimpose it according to specific procedures.

Such processed bearings are likely to melt the special steel by using laser sintering technology during the homework process, resulting in some characteristics of this special steel disappearing, such as the high-strength characteristic or corrosion-resistant characteristic.

The disappearance of these characteristics will lead to the durability and life of the bearings processed using 3D printing technology, which are much shorter than those processed using machining methods.

This makes it particularly worth the loss!

The most amazing thing about the 3D printing technology developed by the team led by Professor Yao Chongshan is that he is not specialized in producing such industrial components.

Instead, it is used to produce casting models of some industrial parts. The industrial models produced using this 3D printing technology save 35% of the processing time compared to traditional methods, and can save 40% of the cost.

Once this model is manufactured, if you use casting technology, you can manufacture such industrial parts in large quantities.

If stamping technology is used, then such molds can also be used to produce industrial parts in large quantities.

Moreover, the industrial parts produced can only be polished afterwards to become finished parts.

Although such technology has no breakthrough for parts that require machining, it is a blessing for industrial parts that require a lot of use of casting and stamping technology.

You should know that the most cost-saving process in the industrial field, the process of processing metal parts is to use large amounts of casting or stamping, especially in the field of automobile manufacturing.

Before using such manufacturing methods, the most important preparation is to open the mold, that is, to be the first to make a suitable mold, and then use this mold as a model to carry out large-scale processing.

Due to the problem of precision machining, our country's industrial mold opening technology has never been very advanced, just take the automotive field as an example.

When many private capitals in my country entered the field of automobile manufacturing, when people did not open the mold for automobile splicing, the finished products produced were splicing together, and the gaps at the splicing were amazing.

For example, the joints of the car engine cover, the joints of the headlights, or the joints of the trunk cover. At the earliest, someone measured them and the thickest parts were twice as high as those of Japanese or German cars.

Such a rough style will make customers afraid on the one hand, and on the other hand, due to insufficient mold accuracy and excessive errors during splicing, the car will have irregular noises and minor problems after use for a period of time.

This will not only lead to a large-scale car repair wave, but will also greatly reduce the reputation of your own brand among customers.

In the previous life, such problems have not attracted much attention from domestic private automobile practitioners until their products, due to their rough workmanship, attracted their attention.

This problem has been delayed for five or six years before it can be solved.

Their solution was to take the drawings and go to Japan to find someone to help drive the model whenever they designed a new car. This not only wasted time, but the most important thing was the money.

Moreover, when there is friction with Japan due to political issues in China, they will also suffer a lot of difficulties in Japan.

This situation can be solved well in China, namely BYD, because in 2008, taking advantage of the outbreak of the international financial crisis, they simply spent a huge amount of money to directly acquire a molding tool company in Japan and mastered this technology, which solved their own problems.

Other domestic automobile practitioners do not have the courage of BYD at all.

This also shows that my country has a gap in the mold field compared to Japan, Germany and the United States with advanced technology-developed countries in the field of molds.

Even if we can acquire their technology, we are still worse than them in the field of precision manufacturing. After all, they have been exploring this field for decades and have sufficient technical experience, but this aspect is something we do not have.

However, if we use 3D printing technology, we can definitely take a different approach to overtaking in the field of precision manufacturing.

After all, what they rely on is their high-precision machining tools and means, while 3D printing technology relies on finding a different approach and reinventing a suitable development path.

Moreover, this road saves more time and costs than their road.

When Li Yifan thought of this, he couldn't help but feel a little anxious.

When Professor Yao Chongshan was noticed in his previous life, he was the time when he achieved his goal and developed their world's largest 3D printer.

At that time, because the development of 3D printing technology in the international community was in full swing, the country also attached great importance to this new technology and was looking for professional talents who had experience in this area across the country. It was at this time that Yao Chongshan entered the vision of domestic senior management.
Chapter completed!