Happy report!my country's low oxygen rare earth steel research has made important progress. What is "black technology"?

According to CCTV News September 13th, the electronic structure of rare earth elements is unique and has excellent physical and chemical characteristics such as magnetic, light, electricity, etc., and plays an important role in various materials. Since the addition of rare earths in the 1920s, a large number of studies at home and abroad have shown that trace rare earth has significantly improved the tough plasticity, abrasion, heat resistance, and corrosion resistance of steel.

Through more than ten years of mechanism research and industrial experiments, recently, the research team of Shenyang Materials Science National Research Center of the Institute of Metal Research of the Institute of Metals of the Chinese Academy of Sciences was inspired by the new mechanism of the preliminary oxygen bias, and found that the roots of rare earth steel performance fluctuations and poured outlets. It is oxygen content. By reducing the oxygen content in the steel and rare earth metals, they combined with experiments, computing, and representation revealing the key mechanism of rare earth in the steel, controlling the solid solution of mixed objects and rare earth, and preparing superior and stable low oxygen rare earth steel. Related research results were published in the "Natural Materials" of Nature magazine.

Comparison of mixed steel (left) in an imported bearing steel (left) and dual -hypoxia rare earth bearing steel (right)

Studies have found that not only the oxygen content in the steel liquid affects the performance of rare earth steel, but also more importantly, the oxygen content in rare earth metals ignored by the academic and industrial circles for a long time has a very important impact on the performance of rare earth steel. Because rare earth metals are extremely lively, large -sized rare earth oxides are easily formed when preparing rare earth metal electrolytes. These rare earth oxides are added to the steel fluid with rare earth metals. And respond to the refractory material to block the mouth.

Based on the above discovery, researchers have further developed the "dual hypoxia rare earth steel" technology, that is, the control technology of steel liquid hypoxic and rare earth metal hypoxia, which effectively solves the bottleneck problem in the application of rare earth steel industry. After being applied in the high -purity GCR15 bearing steel, compared with the bearing steel without rare earth, the rare earth bearing steel ± 800MPA pierced fatigue life increased by 40 times, and the 40%increased rolling fatigue life under the contact stress of 4.2GPa.

The study revealed the root cause of the performance fluctuations of rare earth steel. It is found that only the rare earth can stabilize the effects of deep purification steel in the steel under the conditions of low oxygen conditions, refine the change of miscellaneous objects and strong micro -alloy. This research shows that tons of steel only needs to add more than a hundred grams of light and rare earth, which can significantly improve the performance of the steel under the condition that the cost is basically not increased and the process process is basically not changed. The use of rare earth resources is of great significance to improve the quality of Youte Steel.

In addition, high -grade materials for new energy vehicles in my country have also been broken. According to CCTV News on September 1st, on August 31, the high -level non -income from my country ’s independent research and development and construction of the electrician steel production line was put into production in Hebei Qian'an. New materials will greatly improve the power density and motor efficiency of new energy vehicle motor.

The two new energy vehicle electric steel products put into production in this production line, as the core functional materials of new energy vehicle drive motors, can meet the high efficiency of driving motors.

Picture source: CCTV News Video Screenshot

Hu Zhiyuan, deputy general manager of Shougang Zhixin Qian'an Electromagnetic Materials Co., Ltd.: The efficiency of the motor can be increased by more than 0.8%. If you calculate 50 kilometers per car every day, 20 million cars can save 5 million yuan per day. It took 6 years, independently developed and constructed new energy vehicle -driven motor for high -grade non -pick -up and non -electrical steel production line. The annual high -level production of 350,000 tons of electric steel is 350,000 tons, which can meet 5 million new energy vehicles supporting facilities.

Picture source: CCTV News Video Screenshot

Ma Jiayu, chief engineer of Beijing Shougang Co., Ltd.: "After this production line is put into production, we will open a new process path to lead the new energy vehicle material industry."

A few days ago, the data released by the China Automobile Association recently showed that in August, the production and sales of new energy vehicles in my country reached 691,000 and 666,000 respectively. Strong.

Recently, policies have been introduced in many places to increase their efforts to support the development of the new energy vehicle industry. At the press conference held a few days ago, Sun Dawei, a second -level inspector of the Jilin Provincial Department of Industry and Information Technology, said that the winter in the northeast is cold, and prominent issues such as the long -term charging time of new energy vehicles and short single charging driving mileage. Energy vehicle power replacement mode.

"In the next step, Jilin Province will continue to develop the new energy vehicle industry, give play to the role of China's FAW leader, and accelerate the launch of better new energy vehicle products; improve the layout of new energy charging and replacement infrastructure to ensure sufficient basic service capabilities, solve the solution New energy vehicle users face the problem of charging and replacement anxiety. "Sun Dawei said that he will create a" Jilin model "with scientific planning and pragmatic measures to explore the effective path of promoting and copying new energy vehicles that can be promoted and copied in the Northeast.

Henan Province recently held a special work conference on the economic market held by Henan Province that it is necessary to further study and introduce policies and measures to support new energy vehicle consumption, actively promote the electrification replacement of vehicles in the public field, organize various promotional activities, and release consumption potential.

The promotion of automobile consumption activities in Hebei Province will be launched on September 10. It will carry out a series of activities such as new car promotions, use the old replacement, new energy vehicle promotion, and the promotion of new energy vehicles.In addition, Zhengzhou, Taiyuan and other cities have recently introduced new energy vehicle consumption subsidies to support new energy vehicle consumption.According to the Federation of Federation, the current consumption policy of new energy models is not lower than fuel vehicles in terms of subsidy or coverage, which helps to maintain a high growth trend in the new energy vehicle market.Daily Economic News Comprehensive CCTV News

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