Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 5. Отображено 5.
27-06-2023 дата публикации

Production method of high-reliability large-specification welded H-shaped steel

Номер: CN116329710A
Автор: LIU XIZHANG, SONG TAIHUA, LI HAIGONG, CHENG XIAOLONG, ZHOU LANJU, SUN JINGBO, ZHANG YINGJIE, CHEN CHUANLEI, FANG ZHENYE, HAO YANSEN, LI GUOBAO, HU SHU'E, TAN GANG
Принадлежит:

The invention discloses a high-reliability large-specification welded H-shaped steel production method which comprises the following steps: casting blank production: smelting by adopting a 210-ton top-bottom combined blown converter and LF and RH vacuum refining, and adopting a low-superheat-degree casting, steady-speed steel drawing and casting blank soft reduction technology to ensure that the macrosegregation of a casting blank is lower than class-C 1.5 level and internal cracks do not exist; the heating temperature of the casting blank ranges from 1100 DEG C to 1180 DEG C, and the heating time ranges from 9 min/cm to 14 min/cm; the tapping temperature is 1090 to 1180 DEG C; t-shaped steel rolling is conducted, specifically, after a casting blank is discharged out of a furnace and descaled, multi-pass rolling is conducted on a multi-pass profile rolling machine, the rolling starting temperature is 1120 DEG C, and the final rolling temperature is 810-850 DEG C; h-shaped steel is combined ...

Подробнее
Номер записи: 1
04-07-2023 дата публикации

Smelting method of low-cost high-purity plastic die steel

Номер: CN116377174A
Автор: HU XIAOYING, HU SHU'E, WANG NANHUI, LIU JIANWEI, SONG ZHENHUA, HAN QIBIAO, WANG PENGFEI
Принадлежит:

The invention relates to the technical field of smelting, in particular to a smelting method of low-cost high-purity plastic die steel. The smelting method sequentially comprises the steps of converter smelting, CAS smelting, LF refining and RH refining, the mass ratio of molten iron to scrap steel to iron blocks in the converter smelting step is 185: 33: 20, lime is added for blowing after charging, the bottom blowing flow is increased to 330-350 Nm < 3 >/h after blowing is carried out for 7-9 min, static stirring is carried out for 2 min after blowing is finished, and the converter end point C/P ratio gt is obtained; and 10, the content of FeO in the slag is 10%-16%. Through optimization of the converter smelting process, high-carbon, low-phosphorus and low-oxidability smelting tapping is achieved, the oxidability of converter molten steel is reduced, the purity of the molten steel is improved, conditions are provided for follow-up adoption of silicon-manganese alloy, high-carbon ferromanganese ...

Подробнее
Номер записи: 2
23-06-2023 дата публикации

Steel with high fatigue ultimate strength and homogenization manufacturing method thereof

Номер: CN116288004A
Автор: HU SHU'E, WU KAIMING, HAN QIBIAO, HU FENG, HU XIAOYING, CONG LIN, LI KAITAO, HAN LIQIANG, WANG JUN, LI GUOZHU, ZHANG HUI
Принадлежит:

The invention relates to the technical field of preparation of fatigue-resistant structural steel, in particular to high fatigue ultimate strength steel and a homogenization manufacturing method thereof. The high-fatigue-limit steel is obtained through the processes of smelting, deoxidizing, alloying, refining and continuous casting of raw materials and the processes of normalizing and tempering after rolling of the raw materials. The high-fatigue-limit steel comprises the following chemical components in percentage by mass: 0.03%-0.08% of C, 0.05%-0.20% of Si, 0.60%-1.00% of Mn and Plt. 0.010%, Slt; the alloy comprises the following components in percentage by weight: 0.003% of Fe, 0.010%-0.030% of Nb, 3.0%-3.5% of Ni, less than or equal to 0.006% of Alt, 0.008%-0.015% of Ti, 0.001%-0.005% of Mg and the balance of Fe and inevitable impurities. The method ensures that the obtained steel has high fatigue ultimate strength and low fatigue ductile-brittle transition temperature.

Подробнее
Номер записи: 3
21-07-2023 дата публикации

High-wear-resistance steel plate and online manufacturing method thereof

Номер: CN116463549A
Автор: HU SHU'E, HU XIAOYING, CONG LIN, XIE JINGQUAN, SHEN SHIGANG, HAO WENYUE, LIU CAIYUAN, ZHANG KANG, QIN CHEN, ZHANG TONGTONG, ZHANG NAN
Принадлежит:

The invention relates to the technical field of wear-resistant steel preparation, in particular to a high-wear-resistance steel plate and an online manufacturing method thereof. The steel plate comprises the following chemical components in percentage by weight: 0.18%-0.35% of C, 1.00%-1.50% of Si, 1.80%-2.50% of Mn, 0.18%-0.35% of Plt, 0.20%-0.30% of Cr, 0.20% 0.010%, Slt; the steel plate comprises the following components in percentage by weight: 0.003% of Fe, 0.015%-0.035% of Al, 0.20%-0.40% of Cr, 0.020%-0.060% of V and the balance of Fe and inevitable impurities, wherein C + Mn/10 + Cr/15 + 3V is less than or equal to 0.65%. By reducing the carbon content, reasonably adjusting the relative content of economic elements such as Si, Mn, Cr and V and controlling C + Mn/10 + Cr/15 + 3V which has important influence on wear resistance, a long-process off-line quenching and tempering process of traditional wear-resistant steel is omitted, and a proper on-line air cooling short-process process ...

Подробнее
Номер записи: 4
04-07-2023 дата публикации

Production method of pre-hardened plastic die steel with same blank and multiple hardness levels

Номер: CN116377326A
Автор: HU XIAOYING, HU SHU'E, ZHOU LANJU, WANG NANHUI, HAO YANSEN
Принадлежит:

The invention relates to the field of metallurgical material manufacturing, in particular to a production method of pre-hardened plastic die steel with the same blank and multiple hardness levels. The pre-hardened plastic die steel comprises the following chemical components in percentage by mass: 0.37%-0.42% of C, 0.30%-0.50% of Si, 1.30%-1.60% of Mn, less than or equal to 0.030% of P, less than or equal to 0.010% of S, 1.60%-2.0% of Cr, 0.15%-0.27% of Mo, less than or equal to 0.30% of Cu and the balance of Fe and inevitable impurities. The production method comprises the steps of casting blank heating, descaling, rough rolling, finish rolling and tempering heat treatment. The pre-hardened plastic die steel with the hardness value of 29-34 HRC and the hardness value of 34-37 HRC is produced through the blank of one component system by adopting different rolling processes and heat treatment processes, production of the pre-hardened plastic die steel with the hardness value of 29-34 HRC ...

Подробнее
Номер записи: 5