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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 3. Отображено 3.
03-12-2018 дата публикации

METHOD FOR REFINING MOLTEN IRON

Номер: KR1020180128152A
Автор: KIM, YOUNG HWA, AN, KYUNG SOO, LEE, SANG SU, JUNG, HWA SUN
Принадлежит:

Oxygen blowing in an electric wire, according to the present invention, comprises: a process of measuring a component content and temperature of a molten iron at a time point of 75-85% of the molten iron during a blasting section between a blasting start point and a blasting end point, and determining if KR is inputted or not according to a carbon content (C) in the measured charcoal. Thus, according to the embodiment of the present invention, the internal pressure of the furnace from becoming negative (-) at the end of the furnace is able to be prevented, by supplying carbon (C) such that external air can be prevented from flowing into a converter. Therefore, adsorption to the charcoal line is able to be prevented due to suction of the external air, and it is easy to manufacture low-quality low-carbon steel. COPYRIGHT KIPO 2019 (AA) Start (B1,B2,B3) No (C1,C2,C3) Yes (DD) End (S100) Start blowing (S200) Measure a component content and temperature of a molten iron at a time point of 75- ...

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Номер записи: 1
06-07-2018 дата публикации

MOLTEN STEEL MANUFACTURING METHOD

Номер: KR101875147B1
Автор: LEE, SANG SU, JUNG, HWA SUN, KIM, YOUNG HWA, AN, KYUNG SOO
Принадлежит: POSCO

A molten steel manufacturing method according to the present invention includes a process for charging molten iron into a furnace, a primary smelting process for oxygen introduction and auxiliary material feeding into the molten iron in the furnace, a process for discharging slag generated in the primary smelting process, a secondary smelting process for oxygen introduction and auxiliary material feeding into the slag-discharged molten iron, and a process for releasing the secondarily smelted molten iron from the furnace. The oxygen feeding amount is adjusted in accordance with the content of silicon (Si) in the molten iron. Therefore, according to the embodiment of the present invention, slag making can be promoted, tallin rate improvement can be achieved, and low-phosphorus molten steel can be easily manufactured. In addition, a reaction between Ni and Cu and oxygen, if any, can be compensated for during molten steel manufacturing for production of a ferroalloy containing at least one ...

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Номер записи: 2
19-12-2018 дата публикации

용선 정련 방법

Номер: KR0101930746B1
Автор: 김영화, 안경수, 이상수, 정화선
Принадлежит: 주식회사 포스코

... 본 발명에 따른 전로 내 용선으로 산소 취입을 개시하여, 취련을 개시하는 과정, 취련 개시 시점부터 상기 취련 종료 지점 사이의 취련 구간 중, 용선 취련 75% 이상 시점 내지 85% 미만 시점에서 상기 용선의 성분 함량 및 온도를 측정하는 과정 및 측정된 상기 용선 중 탄소(C) 함량에 따라 KR 지금 투입 여부를 결정하는 과정을 포함한다. 따라서, 본 발명의 실시형태에 의하면, 전로 취련 시에 탄소 농도에 따라 KR 지금을 투입하여 탄소(C)를 제공함으로써, 취련 말기에 노내 압력이 부압(-)이 되는 것을 방지할 수 있고, 이에 따라 전로 내로 외부 공기가 유입되는 것을 방지할 수 있다. 따라서, 외부 공기 흡입에 따른 용선으로의 흡질을 방지할 수 있으며, 저질소강의 제조가 용이하다.

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Номер записи: 3