This year is the 100th anniversary of the founding of the Communist Party of China. In the process of studying and educating the party history, we sorted out the development history of enterprises and found that behind each material, there is the care of the leaders of the party and the state, the needs of China's economic and social development, and the people of building materials. A story of overcoming difficulties and becoming self-reliant.

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China's first bulletproof glass China's first glass fiber reinforced plastic The first modern cement factory in Northwest China China Cement's "special forces" Jiahua cement Yaohua glass An oil painting + two photos China's first quartz glass (click the blue word to Check)

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China's first synthetic mica from the Institute of Artificial Crystallography Synthetic mica has many properties better than natural mica, such as temperature resistance up to 1200 ℃, under high temperature conditions, the volume resistivity of synthetic fluorphlogopite is 1000 times higher than that of natural mica, and electrical insulation It has good properties, extremely low vacuum outgassing at high temperature, and has the characteristics of acid and alkali resistance, transparency, separability and elasticity.

The birth of the first piece of synthetic mica in New China On February 8, 1963, the Ministry of Construction Engineering issued a decision on the establishment of the Institute of Non-Metallic Mines, and the Institute of Non-Metallic Mines (the predecessor of Sinoma Artificial Crystal Research Institute) was officially established. Four months after the establishment of the non-mining institute, the Ministry of Construction and Engineering assigned 18 scientific research projects to the institute, the first of which was "internal thermal synthesis of mica" (Guozhong "Silicon Crystal No. 06").

At that time, there were only 4 college graduates in the synthetic mica group of the non-mining institute, and no one had been exposed to synthetic mica before. Under the leadership of Wang Guofang, the leader of the research group, everyone started from reading the materials, and prepared to build a laboratory while studying. In order to complete the task as soon as possible, everyone started the "white and black" work mode with no rest days and working more than 13 hours a day. If you have any new ideas, you can explore step by step through small experiments, and finally successfully selected the raw materials, formula and process. plan. After nearly a hundred failures and improvements, a millimeter-scale synthetic mica sample was successfully trial-produced in December 1963. It is confirmed by the national physical and chemical test that it is synthetic fluorophlogopite KMg₃ (AlSi3 O10) F₂. Everyone cheered for finding the right direction, marking the birth of the first piece of synthetic mica in my country. This not only fills the domestic gap, but also lays a solid foundation for the rapid development of my country's synthetic mica business.

Bravely shoulder the heavy responsibility to help the country's construction

With the development of modern industry, the demand for synthetic mica is becoming more and more obvious. After continuous improvement and expansion of experiments, the non-mining institute finally grew a synthetic mica sheet with an area of 32cm⊃2; in June 1964, which met the requirements of matching larger than or equal to 4 square centimeters in Europe. After hard work, it was finally successfully tested on the electronic tube and the microwave output window of the vehicle radar. Since synthetic mica does not contain structural water, its operating temperature can reach 1100 °C, which is twice as high as that of natural muscovite. In the production of electronic tubes, the vacuum degree can be increased by increasing the exhaust temperature, thereby greatly improving the technical parameters of electronic tubes, fully meeting the technical requirements of "high reliability and long life electronic tubes", and increasing the yield from 50% to more than 98%. It was soon extended to the electronic tube factories of the Fourth Machinery Department and other fields such as scintillation counter tubes, digital tubes and photomultiplier tubes, resulting in huge economic and social benefits. Especially in December 1964, He Zehui, a well-known nuclear physicist from the Institute of Atomic Energy of the Chinese Academy of Sciences, came to study and visit, and asked for help to synthesize mica sheets. The institute actively cooperated and finally applied synthetic mica to the nuclear industry, providing high-quality insulating materials for important national engineering fields.

Due to the obvious effect of converting synthetic mica into productivity, in 1972, the National Construction Committee approved the expansion of the institute to build a 500-square-meter synthetic mica workshop, and more than 10 young technical backbones were added. In 1980, a large piece of synthetic mica of 506 square centimeters was grown in a melting furnace with a melting capacity of 10 tons, which was the largest synthetic mica piece in the world at that time.

In March 1978, the Party Central Committee held a National Science Conference in the Great Hall of the People in Beijing. Zhang Jingzhi, director of the institute and secretary of the Party Committee, and Wang Guofang, head of the synthetic mica project team, attended the conference. The conference awarded the Institute's internal thermal synthesis mica group "National Advanced Science and Technology Collective", and awarded Wang Guofang the title of "National Advanced Science and Technology Worker". meet.

Do not forget the original intention, inherit and innovate Today, the high temperature resistant insulating mica material is one of the important products of the artificial crystal institute. Now it produces mica insulators, which are mainly used in the power facilities of high-speed trains. The trial production was successful in 2008, replacing similar products from foreign manufacturers. Self-controllable. However, over the years, the degree of mechanization of the product process is not high, and although the product has first-class performance, the cost remains high. At the end of 2019, with the support of the engineering innovation fund project of Crystal Company, the mica ceramics division started related research work on the basis of the "Phase I Automatic Transformation of Mica Insulator Production Line" project, and the first phase took the lead in the automatic transformation of the hot pressing link. In March 2021, the company organized the pre-acceptance of the first phase of automation transformation project, and the project entered the final stage. This automation transformation has effectively improved the production efficiency of mica products and expanded the production scale. It is believed that mica products will make better progress in the modern industrial field in the future.