The next day, Wang Yong gave Zhang Zhidong a question of choosing one of the two, either choosing another project or choosing to purchase imported permanent magnet materials. As for the reason, he did not say.

Zhang Zhidong chose to purchase imported permanent magnet materials without hesitation. After in-depth understanding, in addition to material problems, although there are many other problems, there are no hurdles that cannot be overcome. It is nothing more than spending more time.

Of course, there are also problems with precision bearings, but this problem seems to be more difficult than permanent magnet materials. He has decided to buy imported precision bearings long ago.

Due to Liu Meijuan's reasons, Dolphin Technology has extremely high requirements for product quality, at least it is the top standard for similar international products.

Therefore, the heads of each project have high standards and high starting point from the beginning. Zhang Zhidong used the highest standards in the world to manufacture servo motors, and the displacement accuracy requirement is oooo1 mm level.

It is very difficult to meet this standard, so it must start with basic materials and basic processes.

The same is true for Zhu Tao, who chose CNC machine tools. He is even more serious than Zhang Zhidong and is more cautious because he was demoted, which left a stain on his boss's heart.

It should be said that the difficulty of CNC machine tools without servo motor research tasks has been reduced by n levels, which is also the reason why he chose CNC machine tool research projects.

But after in-depth understanding, he realized that things didn’t seem that simple. On the road of scientific research, it can be said that there is a mountain and a mountain high.

In addition to the big problem of servo motors, there are two big problems of precision measurement and alloy tools.

Because CNC machine tools are fully automatic, the system must be able to accurately measure the size of the part to be processed so that high-precision workpieces can be truly processed.

For example, we not only need to see, but also measure with a ruler.

But this ruler is very not simple, and grating measurement technology is used abroad.

This technique was proposed by British physicist 1    ray1eigh.

Foreign countries have been researching and applying it since the 2o-5o era. After decades of exhibitions and several generations of technology upgrades, foreign countries have now developed the accuracy level of diffraction grating technology.

The principle can be said to be very simple, but the difficult thing is how to implement it. This involves cutting-edge basic technologies such as precision optics, ion evaporation, and photoelectric induction.

Almost all the mountains that cannot be climbed up make Zhu Tao almost desperate.

The same difficulty is also the high hardness alloy cutting head material technology.

Metal material technology has always been the cutting-edge technology of industrial technology and is the standard for measuring a country's industrial strength. It is the most difficult technology to imitate. Major enterprises have treasured their own skills and have never applied for patent protection. This shows how difficult it is to research.

Needless to say more, these two problems alone scared Zhu Tao.

When he saw Zhang Zhidong encountering a problem, he reported it to his boss, and the boss allowed him to import the materials. The problem naturally no longer exists. It is as good as it should be.

With Zhang Zhidong's example, he had a speculative heart and also reported Wang Yong to two major problems.

Although Liu Meijuan asked Wang Yong to set up a technical argumentation decision-making committee, the two major problems reported by Zhu Tao were not computer technology at all, and the committee was definitely unsolvable, so Wang Yong also handed over the report to Liu Meijuan.

He could only hope for her, hoping that she could find a solution.

After dinner, because Wang Yong had already gotten off work, Liu's mother took Xiao Liuxing and Liu Meihua's cute little kid back to her dormitory to watch TV. She didn't want to disturb Wang Yong and his wife's world.

Wang Yong accompanied Liu Meijuan to have a meal and had tea after a meal at the leisure tea on the balcony. Wang Yong handed her the report.

"Wife, this is the report Zhu Tao gave me today. There are two problems that cannot be solved. Please take a look."

Liu Meijuan unconsciously took the report and read it. The report was very short, only two pages. She finished reading it in one minute.

It's really a big problem. In fact, she couldn't help researching CNC machine tools, because until 2018, China was not even a little different from Europe and the United States in the field of CNC machine tools.

When it comes to foreign CNC machine tools, we ordinary people think that their processing accuracy is unattainable, but it is actually wrong.

The components processed by CNC machine tools are used for industrial machinery, automobiles, trains, aircrafts, ships, etc. that require frequent movement in harsh environments, so the more precise the better, it needs to obtain an optimal value.

Because it is too precise, it is not durable. It may be very good at the beginning, but after using it for a long time, even if a trace of the surface of the parts is spent, it may get stuck, making sharp noises and other situations that cannot be used normally.

Its optimal value is micro (u) meters, and the mechanical accuracy of the processing chip is hundreds and thousands of times, which is nanometers.

Some people may have seen a video of a carved steel plate representing the highest craftsmanship of Riben. There is a set of English letters, which are tightly sealed after being embedded. With only the naked eye, it cannot be seen at all that this is a carved steel plate.

We should not be deceived. In fact, we cannot process the carving crafts with the most precise CNC machine tools, because CNC machine tools are only at the micron level.

It's a bit of a blow to people. It's precisely because CNC machine tools only have micron-level accuracy that Europe and the United States reached that level as early as the early 1980s, and China did not reach it in the 21st century.

The key to achieving micron-level accuracy in Europe and the United States is grating measurement technology. It seems that my country has only broken through this technology in 2017.

It has been more than 30 years since it was a pain for China and one of China's biggest shortcomings.

Do you have any now? Since my country announced that it has broken through nanograting technology, foreign countries have no restrictions on the import of precision machine tools in my country.

Speaking of this, I have to say one more thing: the breakthroughs in many cutting-edge fields in our country are really the ones that have made breakthroughs under the leadership of talents who have studied in the United States.

For example, nanograting technology, ion etching machine technology of five-nanometer processes, quantum technology, optical stealth technology, radar stealth materials, chip technology, AI artificial intelligence technology, etc.

But no matter what, it is the achievements made by us Chinese, and we have reason to be proud, which is inseparable from Mr. Deng’s foresight and visionary advocacy of talents to go global.

Science is systematic. In a poor and insignificant country, it is simply a dream to achieve any scientific research achievements.

So far, Dolphin Technology has not dared to get involved in basic scientific research fields such as materials, precision crafts, optics, chemistry, and physics.

It is because China's foundation is really bad. It is said that it has the most complete categories of industries, but in fact it is not proficient in everything, which means there is nothing.

Liu Meijuan proposed to enter the rare earth field, hoping to open a breakthrough in the field of rare metal materials, hoping to lead the whole and drive the development of other basic fields with the point.

The two problems raised by Zhu Tao now are almost unsolvable. If you want to catch up with the cutting-edge level of foreign countries with conventional thinking, it is really a dream.

Chasers are always chasers. Only by breaking out of the rules and regulations of European and American thinking can you truly make a bend.

Liu Meijuan threw the report in her hand on the tea table and fell into deep thought.
Chapter completed!