Im Wan Bin, director of the cutting-edge sci-tech exchange centre under Kim Il Sung University, played a pivotal role in establishing the homemade combustion modelling casting process for the first time in the country.
In fact, he majored in a subject quite different from casting technology.
It was some ten years ago that he set to the research into and introduction of advanced casting technology in line with the specific conditions of the country.
He had worked in a university at that time and came to realize that the wear resistant part of crusher was imported from abroad in a mine.
Its volume was not so small.
He buckled down to ensuring its domestic production by himself.
Through repeated experiments, he drew a conclusion that traditional casting methods could not satisfactorily provide the qualitative indexes of parts and that the solution lies in the combustion modelling casting method.
Reading documents, he learned the fact that the technology is the first process in manufacturing machines beyond the mine and it is an advanced technology for developing the casting process, which takes the majority of workpiece production, onto a new higher stage. It was called an energy-saving green casting technology in the world as it helped reduce the production cost of castings as compared to the traditional method of sand casting, improve quality and ensure clean production environment.
But it was yet an untrodden path in the country at that time.
“It was an undertaking badly needed by the country and so anybody should do it without fail and no one could ignore it even though they were not specialized researchers in the field,” Im recalled.
While following the road of unfamiliar study, he did not waver even once.
Finding a solution to technical requirements arising in establishing each process of combustion modelling casting one by one, he realized its industrialization and localized necessary facilities and fire-proof paint.
And he solved sci-tech problems conducive to introducing homemade combustion modelling casting process into all casting-steel and casting production units throughout the country.
Also, he developed the shell vibration casting technology which is widely being used in the world to meet the actual condition of the country, making progress in improving the quality of castings.
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