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 4. Отображено 4.
23-05-2023 дата публикации

Composite alloy head manufacturing process, strong-connection high-wear-resistance cutting pick and manufacturing process

Номер: CN116140624A
Автор: GUO HAO, ZHANG YAOXIN, WANG KAI, LI HUANXU, WEI JIN, SHANG YONG, JIANG HAIFENG, LI YINGFA, HU ANQING, ZENG JING, CHEN YANTAO
Принадлежит:

The invention belongs to the technical field of cutting picks for tunneling excavation. The composite alloy head manufacturing process comprises three process stages of sintering of a composite alloy head, quenching and tempering heat treatment and machining. In the composite alloy head sintering stage, a structural steel head, transition powder and hard alloy powder are sequentially put into a sintering mold of a discharge plasma sintering furnace, the composite alloy head with the high-abrasion-resistant hard alloy outside and the high-toughness structural steel inside is obtained through electrifying, heating and sintering, and the transition powder is mixed powder of the structural steel powder and the hard alloy powder. And after the sintered composite alloy head is subjected to quenching and tempering heat treatment, a threaded blind hole is machined in the bottom of the composite alloy head. The invention further discloses a strong-connection high-wear-resistance cutting pick and ...

Подробнее
Номер записи: 1
13-06-2023 дата публикации

Hob cylinder, cutting cutterhead and cantilever type heading machine

Номер: CN116255157A
Автор: JIANG HAIFENG, SHANG YONG, WEI JIN, HU ANQING, DENG TONGBO, CHEN YANTAO, ZHANG YAOXIN, LI HUANXU
Принадлежит:

The invention belongs to the technical field of tunneling equipment, and particularly discloses a hob cylinder, a cutting cutterhead and a cantilever type tunneling machine. The hobbing cutter cylinder comprises a cylinder body, the cylinder body is provided with a mounting position for mounting a hobbing cutter, the cylinder body is provided with a rotating axis, the hobbing cutter is provided with a rotating axis, the mounting position is provided with an axis which is correspondingly positioned and coincided with the rotating axis of the hobbing cutter, and the rotating axis of the cylinder body is vertical to the axis of the mounting position in different planes. The cutting cutter head comprises the hobbing cutter cylinder. The cantilever type heading machine comprises the cutting cutterhead. In the practical application, when the cutting cutterhead swings in a reversing mode along with the cutting big arm, the hobbing cutter is subjected to lateral force, and the cutter cylinder rotates ...

Подробнее
Номер записи: 2
04-08-2023 дата публикации

Multi-size TiC and VC composite reinforced ceramic phase reinforced cladding layer and preparation method thereof

Номер: CN116536661A
Автор: LU HAIJUN, CHEN YANTAO, SHANG YONG, WANG DONGHONG, WEI JIN, LI HUANXU, LI YINGFA, JIANG HAIFENG, HU ANQING, ZENG JING, ZHANG YAOXIN
Принадлежит:

The invention belongs to the field of ceramic particle reinforced iron-based cladding layers, and particularly relates to a multi-size TiC and VC composite reinforced ceramic phase reinforced cladding layer and a preparation method thereof. According to the preparation method of the multi-size TiC and VC composite reinforced ceramic phase reinforced cladding layer, an iron-based matrix, a large-size TiC ceramic phase and a small-size VC ceramic phase are included, wherein the large-size TiC ceramic phase and the small-size VC ceramic phase are dispersed in the iron-based matrix; raw material powder for preparing the cladding layer contains V and C elements and the TiC ceramic phase particles, and the VC ceramic phase is formed in situ after cladding. According to the preparation method of the multi-size TiC and VC composite reinforced ceramic phase reinforced cladding layer provided by the invention, composite reinforcement of ceramic phases of different types and sizes in the cladding ...

Подробнее
Номер записи: 3
04-08-2023 дата публикации

Preparation method of composite iron-based wear-resistant layer

Номер: CN116536662A
Автор: LU HAIJUN, SHANG YONG, JIANG HAIFENG, WEI JIN, LI YINGFA, HU ANQING, ZENG JING, LI HUANXU, CHEN YANTAO, ZHANG YAOXIN, WANG KAI, LIAO YONGFA
Принадлежит:

The invention belongs to the field of ceramic phase reinforced iron-based composite materials, and particularly relates to a preparation method of a composite iron-based wear-resistant layer. The TiC and WC ceramic phase composite reinforced iron-based wear-resistant layer is prepared by adopting a cladding method; the cladding method comprises the steps that main powder and auxiliary powder are fed in sequence in the cladding direction, during cladding, the main powder forms a molten pool on the surface of a to-be-cladded base body, and the auxiliary powder falls on the rear portion of the molten pool; the main powder is composed of iron-based powder and TiC ceramic phase powder, and the auxiliary powder is WC ceramic phase powder. According to the preparation method of the composite iron-based wear-resistant layer, the density of the WC ceramic phase for later powder feeding is large, the powder feeding position is controlled at the rear portion of the molten pool, the solidification ...

Подробнее
Номер записи: 4