As soon as Luo Jia's voice fell, the scene was in an uproar.

Everyone can understand that many members of the brainstorming group who are familiar with motor technology have long expected that Luo Jia will challenge the apex of electromagnetic motors, permanent magnet vectors.

But the ultrasonic motor is completely different from all the current motors, which is like an abacus and a computer, both of which are calculation tools, but there is a generational gap between each other, and they are not at all a product of the times.

Luo Jia's ambition shocked everyone again, they seemed to go back to more than a year ago, when Luo Jia suddenly proposed to build a power generation on Carmen Vortex Street, his huge idea made everyone thunder inside and out.

But if you think about it carefully, this is also very in line with Luo Jia's style, with the enhancement of the strength of Xingchen Technology, Luo Jia's ambition is also getting bigger and bigger, and he began to try to challenge the peak of Star Technology.

What is Planet Technology?

It is the strongest technology that human beings can achieve before entering the age of the stars and seas.

Take the Kármán vortex power generation as an example, it is the best power generation technology outside of nuclear fusion, even if one day, human beings really go to the sea of stars, the Kármán vortex power generation technology will still not be eliminated, and can still be used in many fields.

The same is true for ultrasonic motors, a technology that, if developed, will benefit humanity for many, many years to come.

This kind of technology that has reached the apex of planetary science and technology is very difficult to achieve, as strong as the members of the brainstorming group, they also began to scratch their heads, feeling that this time it is troublesome, the ultrasonic motor is really not easy to get.

Luo Jia continued: "Permanent magnet vector motor and ultrasonic motor are two completely different technologies, and the reason why I put it forward at one time is for objective reasons. ”

"First of all, let's take a look at the permanent magnet vector motor, to engage in permanent magnet materials, it needs to consume a lot of rare earths, and which country has more rare earths?"

"Of course, it is China, and China's rare earth reserves account for 70% of the world."

"So we have a strong basic condition, and we don't need to have such good conditions, aren't we stupid?"

"Let's go back to Tesla, in the past few years, Tesla actually did not use permanent magnet motors, but induction motors, although Musk is very clear that permanent magnet motors are much more powerful than induction motors, but he understands better that permanent magnet materials depend on my country's face, and if he doesn't sell them rare earths one day, his plan will be in vain."

"Everyone knows that Musk has built a large factory in Shanghai to produce electric vehicles, and the reason why he built a factory in China is really because he likes China's developed infrastructure and high production efficiency?"

"The answer is no, China's industrial efficiency is high, the whole world is clear, if he really has the heart, the factory would have been built a long time ago, the reason why he has been waiting until now, is because he realized that the road of induction motor on electric vehicles is not passable, can only be on the permanent magnet motor, and the permanent magnet motor needs rare earths, we have rare earths, so he came."

"There is another interesting story, it is about neon, it is said that over the years, they have been studying hard, and they do not use rare earth permanent magnet materials, but they are afraid that if our country does not supply rare earths one day, they will be stuck."

When Luo Jia said this, everyone chuckled, and being able to jam the foreigner's neck still boosted everyone's morale.

Although China has a large land, but the products are not rich, rare earth is one of the few upstream raw materials that we can control, and the rest of the precious metals such as copper, iron, lithium, etc., need to be imported from the world.

The reason why Luo Jia engages in silicon anode batteries instead of lithium anodes includes concerns about the lack of lithium ore resources in China.

At this moment, Luo Jia's words suddenly changed and said something that made everyone's smiles freeze.

Luo Jia said lightly, "In this world, although China occupies 70% of the rare earth resources, the production of 80% of the permanent magnet material NdFeB, but are very primary products, in the field of advanced NdFeB, our technical strength is miserable, the world's three major advanced NdFeB producers, all from neon." ”

"Sumitomo Special Metals ranks first in the world, and the material NdFeB itself was discovered in 1982 by Mato Sagawa, a researcher at Sumitomo Special Metals."

"Shin-Etsu Chemical ranks second in the world, TDK ranks third, and Germany VAC ranks fourth, these four companies dominate the world's high-end NdFeB field, and even our Kármán vortex street power generation array also uses NdFeB produced by Sumitomo Metals."

"This is the cold reality, Neon buys rare earths from us, manufactures them into high-end NdFeB, and then sells them back to us, making a lot of money from them, so why don't we make them ourselves, it's very simple, because we can't make them."

"In China, Zhongke Sanhuan, Zhenghai Magnetics, Ningbo Yunsheng, are the three largest enterprises, Sanhuan can produce 18,000 tons per year, and the production capacity of the other two is about 10,000 tons, but unfortunately, they can not provide the high-performance NdFeB required by the Carmen vortex street power generation array, at that time, due to the tight time and heavy tasks, so I directly asked Sumitomo to buy some."

"Although we have made some achievements in recent years, we are still far from the final victory, although in the power generation array, the proportion of NdFeB materials is not high, but it must not be missing, in case Sumitomo no longer supplies us, the new energy plan will be interrupted."

"Fortunately, we have now freed up our hands and have enough time and people, so next, we will take the opportunity of developing permanent magnet vector motors to solve the problem of high-grade NdFeB."

"This is the reason for the start of permanent magnet vector motor research, this project is not too difficult to develop, and it can solve the important raw material problem of our wind turbine array, which is a double win."

Everyone nodded, and the smile in their eyes quickly disappeared, replaced by a resolute look and a strong sense of mission, especially the three heads of the company's materials science, Ji Ming, Chao Anbang and Cao Yuan, who had already straightened their waists and secretly rubbed their hands.

Shen Lang was stunned, he found that his teacher was really a speech genius, his logic was clear and rational, and between talking and laughing, everyone quickly formed a strong consensus, and gathered tightly around the teacher to perform every task he assigned.

"Then there's the ultrasonic motor." Luo Jia continued: "The permanent magnet vector motor is the strongest motor technology under the current scientific and technological conditions, but this is not enough, we also need to research the next generation of motor products to ensure that in the next few decades, no one can surpass us." ”

"The frequencies of sound that can be heard by the human ear range from about 20 hertz to 20 kilohertz, and more than 20 kilohertz, which is a frequency that cannot be recognized by the human ear, is called ultrasound."

"So what is an ultrasonic motor?"

"To put it simply, the piezoelectric material is used to input voltage to deform to produce mechanical vibration at ultrasonic frequency, and then through the mechanical design of friction drive, the ultrasonic motor is like an electromagnetic motor, doing rotary or linear motion, which is an ultrasonic motor."

"Ultrasonic motors are not like traditional motors, using electromagnetic cross force to obtain motion and torque, ultrasonic motors use the inverse piezoelectric effect of piezoelectric ceramics, and ultrasonic oscillation to move, so that the microscopic deformation of the material, through mechanical resonance amplification, coupled with friction coupling, converted into the movement of the rotor, compared with the electromagnetic motor, it uses piezoelectric ceramic material disk, instead of complex copper coils and cores."

"This is a good thing, the ultrasonic motor responds quickly, the control can be accurate to the nanometer level, there is no need for reduction gears, the shape is smaller, the electromagnetic compatibility is good, it is not interfered by the magnetic field, and it can also be used in various complex environments, such as vacuum, extremely high or low temperatures, strong torque, no noise."

"These superior characteristics are all gathered in the ultrasonic motor, so that it has extraordinary use value, I call this thing space motor, because it is a top technology that can be used from now until the human space age!"

"All in all, ultrasonic motors are of great significance, and we have three main opponents, the first is the North American Jet Propulsion Laboratory, which uses ultrasonic linear motors in a crawler that detects damage to the outer shell of the space shuttle, and it is said that its load-bearing and self-weight ratio can reach an astonishing 10 to 1."

"The second is the Neon Space Research Institute, which has two ultrasonic linear motors for use in the satellite field, and is also purchased by North America and Germany for use as precision measuring instruments in the missile field."

"The last one is the well-known NASA, although NASA has never admitted it, but according to rumors, their Mars rover uses a new generation of miniature robotic arms based on ultrasonic motors, Mars Arm II."

"Due to the advancement of ultrasonic motors, the weight of the Mars Arm II robotic arm has been reduced by a full 40 percent, and you should understand what it means to reduce the weight of 40 percent for aerospace science and technology."

With Luo Jia's introduction, everyone's expressions became serious.

NASA, the world's largest black technology concentration camp, has used ultrasonic motors on Mars rovers, which is by no means good news.

。 Nine Heavenly God Emperors