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2023
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09
Warmly welcome the experts from the Henan Refractory Materials Industry Association to visit Kechuang New Materials
Source： Ke Chuang Xin Cai
Release time：2023-09-17 13:00
2023 On the morning of September 17, experts from the Henan Provincial Refractory Materials Industry Association, including Li Yong from Beijing University of Science and Technology, Wang Zhanmin from Luoyang Refractory Materials Research Institute of China Steel Group, Jia Quanli from Zhengzhou University, Ding Donghai from Xi'an University of Architecture and Technology, Shi Kai from Henan University of Technology, Yang Zhongzheng from North China University of Water Resources and Electric Power, and Jin Qinguo from the Henan Provincial Refractory Materials Industry Association, visited Luoyang Kechuang New Materials Co., Ltd.
2023 On the morning of September 17, experts from the Henan Provincial Refractory Materials Industry Association, including Li Yong from Beijing University of Science and Technology, Wang Zhanmin from Luoyang Refractory Materials Research Institute of China Steel Group, Jia Quanli from Zhengzhou University, Ding Donghai from Xi'an University of Architecture and Technology, Shi Kai from Henan University of Technology, Yang Zhongzheng from North China University of Water Resources and Electric Power, and Jin Qinguo from the Henan Provincial Refractory Materials Industry Association, visited Luoyang Kechuang New Materials Co., Ltd. (hereinafter referred to as: Kechuang New Materials) Development and Application of a New Type of Microporous, Anti-Seepage, Air-Permeable Component and "Development and Application of High-Strength, Low-Thermal Conductivity, Composite Air-Permeable Components" for technical evaluation. The evaluation experts inspected the production site, listened to the project team's report, and provided valuable comments.
Project Source: Luoyang's 2021-2023 Major Science and Technology Projects. The secondary refining technology is a crucial refining process in steelmaking, regulating the steel composition and the temperature of the molten steel. The air-permeable component is the most critical functional material for the successful implementation of this process and plays a vital role in the reliability and completeness of secondary refining. The project content is as follows:
1、“ Development and Application of a New Type of Microporous, Anti-Seepage, Air-Permeable Component ”
The project, using finite element analysis, water simulation experiments, and comparative analysis of actual application data, studied the influence of pore size, pore distribution, and pore shape on the argon blowing process, as well as the fluid characteristics of gas, liquid, and non-metallic inclusions during argon blowing. By using a unique micro-pore forming agent and preparation process, the controllable preparation of brick pore structure (small and evenly distributed pores) was realized. The micropores are connected by tiny air-permeable channels, resulting in stable gas flow, significantly improving the thermal shock resistance and erosion resistance of the air-permeable component, and extending its service life. After discussion, the experts concluded that:
This project uses emulsion pore-forming technology to prepare microporous, anti-seepage, air-permeable components. It innovatively combines this microporous, anti-seepage, air-permeable component with a slit-type air-permeable component, realizing controllable micropore preparation and achieving synergistic improvement in air permeability and anti-seepage functions, developing a new type of microporous, anti-seepage, air-permeable component; The product has been mass-produced, with stable quality. It has been used by many companies with good results and significantly improved service life, achieving significant economic and social benefits. The project has a leading role in the industrialization of anti-seepage, long-life, air-permeable components, the technology is original, and the overall technology has reached the internationally advanced level.
2 "Development and Application of High-Strength, Low-Thermal Conductivity, Composite Air-Permeable Components"
The project prepared SiC-Si 3 N 4 reinforced composite air-permeable components through in-situ synthesis. Through the molding, drying, curing, and firing processes, a composite structure of multiple ceramic phases was formed, exhibiting excellent properties, blocking crack expansion, and introducing pore-forming microspheres to obtain uniform and regular porous ceramics. After discussion, the experts concluded that:
The project introduces pore-forming microspheres into the air-permeable component, controlling the pore structure and distribution to achieve low thermal conductivity of the anti-seepage, air-permeable component. Simultaneously, silicon nitride iron is introduced, utilizing iron to catalyze the in-situ formation of non-oxide ceramic phases, improving the performance of the air-permeable component. The project revealed the in-situ formation laws of gas phase control and non-oxide reinforcing phases in this system, developing a high-strength, low-thermal conductivity, composite air-permeable component; The product is mass-produced with stable quality,
and has been used by many companies, including Baogang Steel Union Co., Ltd., with significantly improved service life and significant economic and social benefits. The project has a leading role in the industrialization of high-strength, low-thermal conductivity, air-permeable components; the technology is original and the overall technology has reached the internationally advanced level.
Figure 1: Kechuang New Materials Chairman Wei Wenxu (left) accompanies Henan Provincial Refractory Materials in visiting the prefabricated component workshop
Figure 2: Kechuang New Materials General Manager Ma Junqiang (left) accompanies Henan Provincial Refractory Materials in visiting the air-permeable brick workshop
Figure 3: Meeting Scene
Source: Luoyang Kechuang New Materials Co., Ltd.: https://www.kcnh.com/
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