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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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Применить Всего найдено 6. Отображено 6.
26-02-2014 дата публикации

Method for leveling broken wave defects of ultra-thin plates and strips

Номер: CN103599963A
Автор: SONG SIHAI, YU YONG, WANG LANYU, WANG XINDONG, LI YIDONG, WANG CHUNFENG, LI JIANJUN, MA CHEN, WANG RUI, LV YAOQIANG, DONG YUEXING
Принадлежит:

The invention discloses a method for leveling broken wave defects of ultra-thin plates and strips, and belongs to the field of finishing technologies for rolled steel sheets. The method is used for overcoming the broken wave defects of the ultra-thin plates and strips. The technical scheme includes the defined convexity of a work roll of a leveler is -0.03mm; in a primary broken wave leveling and eliminating procedure, tension of a reeling machine ranges from 10000KG to 12000KG, tension of an uncoiling machine ranges from 1800KG to 2000KG, positive roll bending force ranges from 150KN to 200KN, and high rolling force ranges from 4000KN to 4500KN; in a second broken wave leveling and eliminating procedure for oblique waves formed when broken waves are leveled, the tension of the coiling machine, the tension of the uncoiling machine and the roll bending force are unchanged, and small rolling force ranges from 2000KN to 2500KN. The method has the advantages that proper leveling technological ...

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Номер записи: 1
22-04-2015 дата публикации

Method for producing low-carbon hot rolled strip steel with degenerated pseudopearlite structure

Номер: CN104525561A
Автор: LYU CHANGBAO, MA CHEN, BAI DONGMING, YANG XIAOBO, DONG YUEXING, TAO WEICHUN, MA CHUNHONG, LI YANG
Принадлежит:

The invention discloses a method for producing low-carbon hot rolled strip steel with a degenerated pseudopearlite structure. The method comprises the steps that heating, rolling, cooling after rolling and reeling processes are conducted on casting blanks or steel ingots with the carbon content being not less than 0.15 wt%, wherein in the post-rolling cooling, laminar cooling is adopted, the temperature of the strip steel existing before water cooling is larger than the air cooling Ar3 of the strip steel of the same specification, the water cooling speed is larger than 30 DEG C/s, the cooling mode can be any one of (1) continuous water cooling and (2) cooling water segmented cooling, and the segmented cooling mode is conducted under the following conditions that the temperature of the strip steel before water cooling and after water cooling is controlled to be within the air cooling temperature range from Ar3 to Ar3, and the air cooling time is not longer than 1.5 s when the thickness of ...

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Номер записи: 2
09-06-2023 дата публикации

Fatigue prediction method suitable for rollers of hot rolling and roughing rolling unit

Номер: CN116244850A
Автор: WANG RUI, LI YUELIN, DONG YUEXING, LIAN BO, MA WEINA, SUN ZHAOLIANG, WANG LIXUE, CHEN HONGBIN, LINGHU KEZHI
Принадлежит:

The invention relates to a roller fatigue prediction method suitable for a hot rolling and roughing mill unit, and belongs to the technical field of hot rolling and roughing mill protection methods. According to the technical scheme, a hot rolling roughing mill roller frequency correction function index and a roller surface stress concentration coefficient are controlled, and the tensile strength of a roller surface material, the fatigue density of the roller surface material, the yield limit of the roller surface material, the elastic modulus of the roller surface material and the percentage reduction of area of the roller surface material are comprehensively considered; and predicting the fatigue life of the roller of the hot-rolling roughing mill. The method has the beneficial effects that the fatigue life of the roller of the hot-rolling roughing mill under the specific condition is calculated, so that the fatigue life of the hot-rolling roughing mill is predicted, the fatigue life ...

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Номер записи: 3
25-06-2014 дата публикации

Method for producing ultrathin hot-rolled coils from sheet billets by continuous casting and rolling

Номер: CN103878178A
Автор: SONG SIHAI, YANG XIAOJIANG, WANG CHUNFENG, LI JIANHUI, LYU YAOQIANG, LI YANG, XIN XIAOBING, DONG YUEXING, MA CHEN, YIN GUOQIANG, AN YUCHAO, WANG JIZHOU, LI KUN, LYU XIAOHU
Принадлежит:

The invention discloses a method for producing ultrathin hot-rolled coils from sheet billets by continuous casting and rolling. The method includes the technologic steps of (1) steelmaking process, (2) continuous casting process, (3) heating process, (4) hot rolling process and (5) cooling and coiling process. The continuous casting process includes drawing steel balls into continuous casting billets by means of continuous casting, wherein casting speed is controlled to be 4.5-4.7 meters/minute, feeding-to-furnace temperature is within a range from 935 DEG C to 960 DEG C, and thickness and width of the casting billets are controlled to be 70mm and 1260mm respectively. The heating process includes heating the continuous casting billets by a heating furnace with a three-step furnace temperature control function. The hot rolling process includes producing the heated continuous casting billets into ultrathin hot-rolled sheets via a roughing mill and a finishing mill, and controlling finishing ...

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Номер записи: 4
30-05-2023 дата публикации

Surface wear forecasting method for flat roll and vertical roll of hot rolling and roughing mill unit

Номер: CN116186977A
Автор: WANG RUI, LI YUELIN, DONG YUEXING, LIAN BO, MA WEINA, SUN ZHAOLIANG, WANG LIXUE, CHEN HONGBIN, LINGHU KEZHI
Принадлежит:

The invention relates to a surface wear forecasting method for a flat roll and a vertical roll of a hot rolling roughing mill unit, and belongs to the technical field of hot rolling production methods. According to the technical scheme, a mathematical model of surface abrasion of the flat roll and the vertical roll is established, rolling force or inter-roll contact pressure of each section is obtained through a partitioning method, and the abrasion loss of the flat roll on each section and the total abrasion loss of the vertical roll are calculated by analyzing the abrasion rule of the flat roll. The method has the advantages that the surface abrasion loss of the flat roll and the vertical roll of the hot rolling four-roll mill is forecasted, the thickness and width control precision in the hot continuous rolling production process is improved, and the plate shape quality is improved.

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Номер записи: 5
12-08-2015 дата публикации

Production method of micro-titanium enhanced steel belt for hot rolling stamping based on sheet billet flow

Номер: CN104831152A
Автор: LIU LIPING, QIAO ZHIMING, LI MENGYING, YU SHICHUAN, FU JIANJUN, YIN KAI, MA GUANGZONG, HAO ZHANQUAN, FENG HUIXIAO, WU GUANHUA, DONG YUEXING, SONG HAIWU, WANG JIAN, TIAN XIUGANG
Принадлежит:

The invention discloses a production method of a micro-titanium enhanced steel belt for hot rolling stamping based on a sheet billet flow, and belongs to the technical field of metallurgy plate. The steel belt comprises the chemical components by the weight percentage: 0.04-0.06% of C, not more than 0.03% of Si, 1.30-1.50% of Mn, not more than 0.020% of P, not more than 0.008% of S, 0.020-0.040% of Ti, 0.020-0.040% of Als, not more than 0.0050% of N, and Fe and inevitable residual elements. The method adopts the processes: smelting with a revolving furnace, refining with a LF furnace, continuous casting, heating with a heating furnace, scale removal with high-pressure water before rough rolling, rough rolling with two machine frames, scale removal with high-pressure water before finish rolling, finish rolling with five machine frames, laminar cooling, and coiling. Through low carbon, high manganese and micro-titanium enhancement composition design and reasonable continuous casting, heating ...

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Номер записи: 6