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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

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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5. Отображено 5.
13-06-2023 дата публикации

Production method for improving mechanical property uniformity of chromium-molybdenum steel wire rod

Номер: CN116254466A
Автор: AN JINGTAO, TIAN XINZHONG, DONG QING, LIU HUI, ZHANG JIAN, LI YONGCHAO, LI YASHUO, CUI JIE, LYU HAOJIE, FAN YAPENG, QIN SHUCHAO, HUO LIGUO, WANG DONGCHEN, MA HONGLEI, WEN NANA, KONG LINGBO
Принадлежит:

The invention discloses a production method for improving mechanical property uniformity of a chromium-molybdenum steel wire rod, and belongs to the technical field of steel wire rod production. Comprising the steps of smelting, continuous casting, rolling and cooling. A casting blank comprises the following chemical components in percentage by weight: 0.35 to 0.37 percent of C, 0.15 to 0.30 percent of Si, 0.70 to 0.80 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.020 percent of S, 0.95 to 1.05 percent of Cr, 0.15 to 0.25 percent of Mo and the balance of iron and inevitable impurities. The first three heat preservation covers are opened after spinning, the roller way speed of the first section is 0.12 m/s, and the roller way speed of the tail section is 0.35 m/s; according to the invention, the hot-rolled wire rod with uniform mechanical properties is obtained through component control, controlled rolling and controlled cooling technologies.

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Номер записи: 1
30-05-2023 дата публикации

Production method for improving hot charging rate of bloom low-carbon aluminum killed steel billet

Номер: CN116174668A
Автор: LYU HAOJIE, TIAN XINZHONG, DONG QING, CUI JIE, LI YONGCHAO, FAN YAPENG, WANG DONGCHEN, AN JINGTAO, QIN SHUCHAO, RONG FEI, HUO LIGUO, KONG LINGBO, LIU HUI, ZHANG JIAN
Принадлежит:

The invention discloses a production method for improving the hot charging rate of a bloom low-carbon aluminum killed steel billet, and belongs to the technical field of metallurgy. The production method comprises the procedures of molten iron desulfurization, converter treatment, LF furnace treatment, RH furnace treatment, continuous casting, cogging and rolling. A continuous casting procedure: the surface temperature of a casting blank after three times of cooling is less than or equal to 300 DEG C, and the temperature after surface temperature return before hot charging is less than or equal to 600 DEG C; the surface temperature of the steel billet before entering the furnace is greater than or equal to 450 DEG C; on the premise that the product quality is guaranteed, hot charging is carried out on the steel billets, pile cooling treatment is not needed any more, the purposes of saving energy, reducing consumption and improving the yield are achieved, meanwhile, the product surface quality ...

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Номер записи: 2
28-07-2023 дата публикации

Method for identifying cold resistance of upland cotton in different growth periods

Номер: CN116491385A
Автор: WANG JUNJUAN, YE WUWEI, WANG YANQIN, YIN ZUJUN, LU XUKE, CHEN XIUGUI, WANG SHUAI, ZHOU DAYUN, FU XIAOQIONG, WANG DELONG, JIA YINHUA, GUO LIXUE, CHEN CHAO, ZHAO LANJIE, HAN YINGCHUN, SUN LIANGQING, ZHANG YUEXIN, FAN YAPENG, HAN MINGGE, FENG XIXIAN
Принадлежит:

The invention discloses a method for identifying cold resistance of upland cotton in different growth periods. Belongs to the technical field of upland cotton identification. The method provided by the invention is used for identifying the cold resistance of the upland cotton in a germination stage, a bud stage, a cotyledon stage or a trefoil stage. Identifying the cold resistance in the germination period: treating the seeds at 4 DEG C for 7-10 days, and then recovering to grow for 4 days; identifying the cold resistance in the bud stage: treating the buds at 4 DEG C for 3-5 days, and then restoring to grow for 10-14 days; cold resistance identification in a cotyledon stage: treating cotyledons for 3-5 days under the conditions of illumination and 4 DEG C, and then restoring growth for 10-14 days; and identifying the cold resistance at the trefoil stage: when the culture is carried out to the trefoil stage under normal conditions, treating for 3-5 days under the conditions of illumination ...

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Номер записи: 3
04-08-2023 дата публикации

Method for improving surface quality of wire rod for piston rod of automobile shock absorber

Номер: CN116532496A
Автор: LI YONGCHAO, TIAN XINZHONG, DONG QING, WANG DONGCHEN, FAN YAPENG, LYU HAOJIE, AN JINGTAO, WEN NANA, MA HONGLEI, YAN CONG, SHEN TONGQIANG, RONG FEI, LI YASHUO
Принадлежит:

The invention discloses a method for improving the surface quality of a wire rod for a piston rod of an automobile shock absorber. The method comprises the working procedures of spinning, coiling and packaging. The specification of the wire rod for the piston rod of the automobile shock absorber is phi 12-20 mm, and the spinning parameters are as follows: the amplitude is 2.5-5.5%, the period is 3-6 s, and the advance coefficient is 1-2.5%. By optimizing spinning process parameters and a coil collecting mode and reducing packaging pressure, coil discharging quality and coil rod packaging quality are improved, the defects of surface scratches of coil rods, pits of finished piston rods and pocking marks are reduced, the reject ratio of products is reduced to be smaller than or equal to 3% from 11%, the yield of the products is increased, and customer losses are reduced.

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Номер записи: 4
04-08-2010 дата публикации

Method for synthesizing methyl N-phenyl carbamate via microwave assistance

Номер: CN0101792404A
Автор: YAPENG FAN, BO LIU, YI WANG, YOU JUN, FAN YAPENG, LIU BO, WANG YI
Принадлежит:

The invention discloses a method for synthesizing methyl N-phenyl carbamate via microwave assistance and relates to a synthesizing method of methyl N-phenyl carbamate. The invention solves the problems of high production cost, long reaction time and small industrialization prospects of the existing synthesizing method of the methyl N-phenyl carbamate. The synthesizing method comprises the following steps: mixing aniline and dimethyl carbonate, adding a load type acetate catalyst, and then reacting for 0.5-10 min under the microwave condition of 60-250 W at the temperature of 100-170 DEG C. The synthesizing method has the advantages of short reaction time, simple process, easy operation and low production cost and is suitable for industrialized application. The conversion rate of the aniline is 45.9% to 99.4%, and the yield of the dimethyl carbonate is 36.8% to 98.5%.

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Номер записи: 5