"NdFeB magnet materials are produced from the rare earth resources of Huaxia, but the countries that profit the most from NdFeB magnet materials are Japan, Europe and the United States." Dr. Zhang Yanhua reached out and picked up a material on the table, opened it and said, "I have a material here." In 2000, the global output of sintered NdFeB magnets was about 15,090 tons, Huaxia's output was 5,550 tons, accounting for about 37 percent of the world's total output, and Japan's output was 7,700 tons, accounting for about 51 percent of the world's total output. Production in the United States and Europe is one thousand and twenty tons, respectively. ”

Zhang Yanhua pointed to the materials and said: "Judging from statistics, the output value of 5,550 tons of sintered NdFeB in our country is only 200 million US dollars, while the output value of more than 7,700 tons in Japan has reached 1 billion US dollars. In other words, the price of NdFeB materials in China is only more than 30 US dollars per kilogram, while the price of NdFeB materials produced in Japan is as high as 130 US dollars per kilogram. ”

"There is such a huge disparity?" Zhao Changfeng was very surprised, and he asked: "Dr. Zhang, it is also a NdFeB permanent magnet, why is there such a big difference in price?" ”

Zhang Yanhua sighed, shook his head and said: "Huaxia Guo has not mastered the patented technology, so it can only simply produce some low-grade NdFeB permanent magnets that are easy to imitate, and the added value of the product is low, and the price will not go up. ”

Although he made up for the knowledge of NdFeB permanent magnets for a few days, Zhao Changfeng was still a layman, so he asked: "Dr. Zhang, what is the difference between the use of this high-grade NdFeB product and a low-grade product?" ”

Zhang Yanhua has been idle in the laboratory for ** months. Facing two old partners every day, it is rare for a guest to come over. Today, this county magistrate Xiao Zhao does not have a little official spirit, just like a humble gentleman asking him for advice, Zhang Yanhua came to talk. He said: "The general performance of NdFeB products produced by Huaxia is around N35, that is to say, the magnetic energy product is 35MGOE. The grade of NdFeB produced in Japan and the United States has reached N50. As for high coercivity grades. There is also a big gap between us and Japanese and American companies. ”

The so-called magnetic energy product, simply put, is how many units of magnetic energy can be stored in a certain volume of magnet. Other words. The greater the volume of magnetic energy of the earth permanent magnet, the stronger the magnetic force contained in the unit volume. As for coercivity, it is an indicator of how much of the original magnetization state can be maintained when the magnet encounters an external magnetic field in the opposite direction. In layman's terms, it is the magnitude of the demagnetization effect. The higher the coercivity of a permanent magnet, the greater its ability to resist demagnetization when encountering an external magnetic field in the opposite direction. Same as the product of magnetic energy. Coercivity is also an important indicator of permanent magnet materials.

"From the point of view of use, Huaxia's low-end products are mainly used in the audio field. The NdFeB magnets of Japan, the United States and Europe and other Western countries are mainly used in the field of motors, especially computer hard disk drives, floppy disk drives, in addition to communication products, nuclear magnetic resonance and other fields, so the price greatly exceeds our low-end products, in the world there is a Chinese production of rare earths, but it is the situation of the Japanese and the United States and Europeans who make money. ”

Speaking of this, Zhang Yanhua threw the materials in his hand on the table. looked at Zhao Changfeng and said: "I came back from the United States with two old partners to engage in this permanent magnet material laboratory. That is, we want to change this situation, so that we can also produce high-grade permanent magnets. Let the rare earth resources of Huaxia make money for the Chinese people. The reason why we didn't leave after the bankruptcy of the Riyadh Group this time is that we are still waiting and watching. Let's see if there's a chance to continue our research on NdFeB production patents and fulfill the wishes of these three old guys. ”

Although Zhao Changfeng was also moved by Zhang Yanhua's sentiments, sentiment could not replace reality, and the key to the problem was whether this laboratory could study the patented technology of NdFeB production, otherwise no matter how good the wish was, it would be just a bottomless pit that could never be filled.

"Dr. Zhang. It's been almost three years since you and your two partners returned to China, right? Zhao Changfeng asked with a smile. What is the current status of this NdFeB production patent? ”

Zhang Yanhua looked at Gao Shengqiang. Didn't speak.

Gao Shengqiang hurriedly introduced: "Dr. Zhang." Our city is a small city in the mainland. Limited economic strength. I want to transfer this laboratory to Yuehai County, which is more economically powerful. It's also about making the lab better and faster. This time, the magistrate of Yuehai County Zhao came over. It is a preliminary inspection of the laboratory. How to fit. Yuehai County will succeed Bibei City as the new owner of the permanent magnet materials laboratory......"

Zhao Changfeng stretched out his hand again. Said to Zhang Yanhua: "Dr. Zhang." Please advise. ”

Only then did Zhang Yanhua know that Zhao Changfeng had come here for this trip. Compared to the small city of Pibei City in the mainland. Yuehai County, a coastal area, obviously has more strength to develop NdFeB permanent magnet materials. He groaned. said: "County Magistrate Zhao." Three years is not a short time. However, it took seven or eight months to remove the bankruptcy site of the Riyadh Group and the construction of the laboratory. Our laboratory has been fully engaged in the research of NdFeB materials for a little more than a year. And because of the strength and cognitive problems of the Riyadh Group itself. There is a congenital lack of investment in the laboratory. Because the progress of the research of new neodymium iron-boron materials has been greatly affected. Even so. Our laboratory has also made great progress in the research of new neodymium-iron-boron materials. ”

Zhang Yanhua sighed. He paused for a long time. He continued: "But at the critical moment when a major breakthrough is about to be made in materials experiments. The Riyadh Group suddenly went bankrupt. The laboratory was experiencing significant difficulties in terms of funding and the supply of raw materials. So much so that it fell short! ”

Speaking of this, Zhang Yanhua looked sad: "If Riyadh Group can give me an extra month, even if it is half a month, we will also research the formula patent of the new permanent magnet material of NdFeB!" ”

Zhao Changfeng was overjoyed, if it was really like what Zhang Yanhua said, then Yuehai County would take over this permanent magnet material laboratory and do it casually, wouldn't it be possible to get out the formula patent of NdFeB?

"Dr. Zhang, if you invest enough, how long can you be sure that you will come up with this patented formula?" Zhao Changfeng's eyes were blazing.

Zhang Yanhua lowered his head and thought for a while, and said: "Although the laboratory has been suspended for more than eight months, and the technicians have also left, our three old partners are still here, and the main technical indicators are controlled by us. ”

Seeing that Zhao Changfeng was still suspicious, Zhang Yanhua got up and came to the solid wood filing cabinet in the corner of the office, opened it carefully, and took out three shiny cylinders made of stainless steel from inside.

"What is this?" Zhao Changfeng and Gao Shengqiang looked at the three small stainless steel cylinders in Zhang Yanhua's hands in amazement.

"This is the NdFeB permanent magnet we experimentally produced." Zhang Yanhua said with a smile: "I'll show you now." ”

As he spoke, Zhang Yanhua came to a place four meters away from the office security door and let go of the first stainless steel cylinder in his hand. I saw that the small cylinder seemed to have life, and it flew straight to the security door, only to hear a loud bang, and the small cylinder was tightly attached to the security door.

Gao Shengqiang and Fang Zhonghai's eyes widened, looking at this incredible scene, Bao Xiaofei was even more surprised "ah". Although Zhao Changfeng remained silent, he was secretly surprised in his heart. The magnetism of this permanent magnet is too strong, right?

"County Magistrate Zhao, you can move this permanent magnet and give it a try." Zhang Yanhua stood by the security door with a smile and sent an invitation to Zhao Changfeng.

Zhao Changfeng came to the security door curiously, and reached out to grab the permanent magnet attached to the door, but the permanent magnet seemed to grow on the security door, and he couldn't catch it at all.

Zhao Changfeng's competitiveness came up all of a sudden, how can he say that he is also a young and strong young man, it can't be said that he can't even deal with a small permanent magnet, right? He didn't dare to slack off, and used all his strength to grab it, but he could only let this permanent magnet roll back and forth on the security door, and if he wanted to catch it, he couldn't.

Gao Shengqiang and Bao Xiaofei next to him were also curious, they all stepped forward to try, and felt that this little cylinder was slippery, and they could only grasp it with a few fingers, and it was not easy to use force, so they held back their faces and used all their strength, but they still couldn't catch it.

Zhao Changfeng turned his head to look at Fang Zhonghai, who was smiling beside him, and said, "Xiao Fang, you come and give it a try." ”

The boss had orders, of course Fang Zhonghai didn't dare to slack off, he stepped forward with a dignified face, his five fingers were like hooks, firmly pinched the smooth surface of the permanent magnet, and then slowly exerted force, feeling the huge suction from the permanent magnet, so after two tests, Fang Zhonghai had a relatively clear grasp of the suction of the permanent magnet, he pressed the anti-theft door with his left hand, and suddenly exerted force with his right hand, only to hear a crisp sound, and the permanent magnet was dragged down by Fang Zhonghai.

"Good!" Bao Xiaofei watched excitedly from the sidelines, and couldn't help but shout hello for Fang Zhonghai.

Fang Zhonghai smiled and handed the permanent magnet to Zhao Changfeng, Zhao Changfeng looked at it over and over in his hand, if he hadn't seen it with his own eyes, he really couldn't believe that this small permanent magnet contained such a large magnetic force.

"This is the permanent magnet you experimented with?" Zhao Changfeng asked Zhang Yanhua, "It's very powerful." ”

Zhang Yanhua nodded and said: "The magnetic force of this permanent magnet exceeds 13,000 gauss, and the magnetic energy product reaches N65, and all technical indicators exceed those of Japanese and American products. ”