Jo Aug 5, 2019
The research group led by Choe Ji Myong, the head of a laboratory in the Faculty of Electronics Engineering, developed a new grounding resistance electrometer that can measure the grounding resistance of the power electronic system with the correctness of below ±0.1Ω, opening up the broad prospect of preventing the destruction of electric and electronic products and ensuring the safe management by designing and manufacturing with their own efforts the devices with the automatic switching function on a measuring zone of 0.1~1kΩ. Now, the group is continuously pushing forward the research project to develop the wireless power transmitting system.
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Jo Jul 10, 2019
Pak Se Il and his research team of the Faculty of Heat Engineering succeeded in establishing the hot blast drying process for CMYK which is using electrically heated air.
They proposed to use electrically heated air instead of propane gas to dry the printing material in the CMYK hot blast offset duplicator and made clear the characteristics of drying printing material and the relationship of different elements which have influence on the quality and output of products and consumption of electricity of the printing material while they are dried.
They also designed the new heat switchboard which is capable of making an effective use of the heat of waste air at different temperatures of more than 110℃ giving off during the period of drying so that they could economize a large amount of energy needed in drying the printing material.
They constructed the control system in keeping with the operation conditions so that rational indices of the operation were determined which made it possible to establish the hot blast drying process using electrically heated air.
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Jo Jul 6, 2019
Ra Chung Yol and Cho Yong Yon, researchers from the Faculty of Resources Probing Engineering have developed white magnesia cement, green building material, from our own brucite marble, and greatly contributed to the industrialization.
Newly developed white magnesia cement can be produced in the existing process in the factory without establishing a new process and its pressure strength is42MPa.
As the burning temperature is 100~200℃ lower in comparison with dolomitecement and the range is between 400℃ and 700℃, it consumes less fuel andconvenient to produce. In particular the whiteness is over 88%, so it is far superior to another magnesia cement. Therefore, it is being used as good finishing building materials.
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Jo Jun 7, 2019
The research group in the Semiconductor Institute including Rim Chang Sik, Ri Won U has made a great achievement in the researchwork to develop the differential pressure transducer necessary for measuring the fluid amount.
This project is the tiezo resistive differential pressure transducer which measures the high-temperature steam fluid in the thermal power station and the flowing amount of fluid with high pressure and temperature in the chemical industry.
The research group selected a lot of materials appropriate to different differential pressure forming modes, reliable in high pressure and temperature and sensitive to the variation of pressure and designed and trialed while precisely changing the shape and structure of the diaphragm, thereby solving many scientific and technological problems such as the material and structure of the diaphragm, the manufacture, and the placement of the diaphragm, and the sensitivity and the precision.
By doing so, they have opened a bright prospect of developing with our own technology the differential pressure measuring device which is cheap and has great precision of 1%FS in measuring the pressure difference of various bands from 1 to 50KPa
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Jo Jun 5, 2019
Li Gyong Il, lecturer of the Faculty of Automation Engineering has developed a cubic structure attitude control experimental instrument.
Though in need of reference data, he mathematically modeled the geometrical size, material selection, centre of mass of each part and inertial moment to develop a system of attitude stabilization control system and confirmed the reliability of the instrument through scores of simulations and linkage experiments.
The cubic structure attitude control experimental instrument he developed is a valuable one not only for the students’ experiment but also for checking up the efficiency of the attitude control algorithm used in the ultra-miniature equipment.
Not satisfied with his result, he keeps making a profound research to develop the attitude stabilization control system with jump-up and corner as a fulcrum.
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Jo May 16, 2019
National Public Presentation Meeting and Exhibition of Welding Science and Technology was held from May 13 to 14 under the auspices of the Central Committee of the General Federation of Science and Technology of Korea.
This exhibition was attended by teachers, researchers, postgraduates and officials from scores of units including Kim Chaek University of Technology, the Welding Research Institute of the State Academy of Sciences, Pyongyang University of Architecture, Pyongyang University of Machine Engineering and Kumgang Refinery in Munchon.
They presented over 700 pieces of valuable papers and exhibitions that can be contributed to the research and development of welding methods and equipment and making welding materials Juche-oriented, upholding our Party’s idea of attaching importance to science and technology.
The “Inversion-style multi-functional welder”, which was newly invented by brainstorming, took the first place in team standings. The “Titanium slag linking welding rod” presented by Jong Song Gil, a teacher from the College of Materials Science and Technology, took the first place in the final standing of individuals. “Research on the titanium concentrate linking welding rod” by Ri Won Jun, a teacher from the College of Materials Science and Technology and other six papers took the second place. In addition, “Device for measuring the length of the electric arc” by Kang Yun Sok and other 3 pieces took the third place. Thus, KUT took the first place in total.
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