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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 25. Отображено 25.
12-11-2008 дата публикации

Tundish covering agent special for smelting pipeline steel

Номер: CN0101301679A
Автор: ZHENMING WANG, XIAODONG XU, ZHIYUAN ZHU, WENJUN WANG, JIANPING YANG, SHUOMENG SUN, WANG ZHENMING, XU XIAODONG, ZHU ZHIYUAN, WANG WENJUN, YANG JIANPING, SUN SHUOMENG
Принадлежит:

The invention provides a tundish covering agent specially used for pipeline steelmaking. According to the weight percentage, the covering agent comprises 4-6% of C, 20-40% of CaO, 7-9% of MgO, 2.13-17% of SiO, 5-7% of NaO, 18-20% of Al2O3 and the rest are minute quantities of FeT and KO. The tundish covering agent has the advantages that the low carbon high alkalinity tundish covering agent ensures the continuous casting carbon increasing is less tan 0.005% or even without carbon increasing, and effectively reduces the content of sundries in the molten steel.

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Номер записи: 1
13-04-2011 дата публикации

Ladle furnace refining stirring process for preventing large quantity of slags from lumping by weak bottom blowing

Номер: CN0102010937A
Автор: Bai Xuejun, Chai Yuguo, Chen Xia, Hao Ning, Jiang Dongcai, Jiang Zhongxing, Jiang Haitao, Li Benhai, Li Tao, Li Yongdong, Li Zhanjun, Liu Cheng, Liu Jingang, Shi Lei, Shi Zhiqiang, Sun Qisong, Sun Shuomeng, Wang Dongzhu, Wang Lifeng, Wang Sen, Wang Wenjun, Wang Yanfeng, Xu Li, Yan Xinhui, Zhang Jianshi, Zhang Lijun, Zhu Zhiyuan
Принадлежит:

The invention discloses a ladle furnace refining stirring process for preventing large quantity of slags from lumping by weak bottom blowing, belonging to the technical filed of ladle refining. The process of the invention is realized by an on-line wire feeding device and a bottom blowing process as follows: controlling the aluminum content in the steel before the ladle refining to be 0.02-0.04%, and starting ladle bottom blowing for stirring; adding 2/1-2/3 of the required amount of the slags; feeding aluminium wires into a steel ladle by the wire feeding device, wherein the wire feeding rate is 2-3m/second, the time for starting wire feeding is the same as the time for starting adding the slags or is one-third of the time of adding the slags, and the aluminum content in the steel after the wires are fed is 0.04-0.10%;and smoothly dispersing and smelting the slag under the conditions of the aluminium wire mechanical rabbling and bottom blowing stirring, and then normally refining, thus ...

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Номер записи: 2
20-04-2011 дата публикации

Smelting method for controlling content of nitrogen in low-carbon steel

Номер: CN0101760582B
Автор: XIA CHEN, CHUNYANG GUAN, NING HAO, ZHONGHANG JIANG, HAITAO JIANG, GUANGSHUANG LI, ZHANJUN LI, CHENG LIU, JIANMING LIU, JINGANG LIU, YANG LIU, YANCHUN LU, QINGSHEN MA, SHUDONG SHI, ZHIQIANG SHI, SHUOMENG SUN, XIAO WAN, DONGZHU WANG, WENJUN WANG, YANFENG WANG, SHANGHAO WEI, YAOHUAN WEI, CUIHONG XIE, GUOWEI YANG, ZHIYUAN ZHU, CHEN XIA, GUAN CHUNYANG, HAO NING, JIANG ZHONGHANG, JIANG HAITAO, LI GUANGSHUANG, LI ZHANJUN, LIU CHENG, LIU JIANMING, LIU JINGANG, LIU YANG, LU YANCHUN, MA QINGSHEN, SHI SHUDONG, SHI ZHIQIANG, SUN SHUOMENG, WAN XIAO, WANG DONGZHU, WANG WENJUN, WANG YANFENG, WEI SHANGHAO, WEI YAOHUAN, XIE CUIHONG, YANG GUOWEI, ZHU ZHIYUAN
Принадлежит:

The invention relates to a smelting method for controlling the content of nitrogen in low-carbon steel, which belongs to the technical field of steelmaking. The process characteristics are as follows: the smelting slag of a converter is controlled to be 60kg/t steel-120kg/t steel, and the alkalinity is 5 to 7; the circular flow is tapped and strongly deoxidized, and slag is added into the bottom of a ladle before tapping; the arrival temperature of an LF furnace is ensured, the LF furnace refines and the primary heating time is controlled to be 1min to 15min, so as to reduce nitrogen increase; through RH vacuum treatment, the flow of argon is controlled and increased, the vacuum treatment time is more than or equal to 10min and the vacuum degree, and heat insulation agent is uniformly spread on the surface of the ladle after the vacuum treatment; a double-loop suture sleeve and a 3mm-7mm washer are adopted in the casting process and are sealed and protected by argon; and covering agent ...

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Номер записи: 3
24-06-2009 дата публикации

Deep desulfurization method using premelted slag in RH vacuum furnace

Номер: CN0101463412A
Автор: SHI SHUDONG, XU XIAODONG, ZHU ZHIYUAN, WANG HAORAN, JIANG HAITAO, SUN SHUOMENG, SHI ZHIQIANG, SHUDONG SHI, XIAODONG XU, ZHIYUAN ZHU, HAORAN WANG, HAITAO JIANG, SHUOMENG SUN, ZHIQIANG SHI
Принадлежит:

The invention relates to a pre-melted slag deep desulphurization method in a RH vacuum furnace, belonging to the vacuum steelmaking technical field. 300-800Kg/t of pre-melted desulphurized slag is added by an alloy feeding chute during the vacuum treatment of the RH furnace to realize the molten steel deep desulphurization. The pre-melted desulphurized slag comprises the following components by weight percentage of 55-60% of CaO, 15-25% of Al2O3, 2-8% of SiO2, 0-5% of MgO, 0-0.06% of S, 0-0.5% of water and 0-1.89% of impurities. The pre-melted slag deep desulphurization method has the advantages of simple equipment, no powder injection desulphurization top lance and low operating cost. Compared with a powder injection desulphurization mode, the pre-melted slag deep desulphurization method has larger added pre-melted slag amount and is beneficial for improving the desulphurization rate of molten steel.

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Номер записи: 4
14-01-2009 дата публикации

Carbureting prevention processing method for quiet steel smelting LF stove

Номер: CN0101343678A
Автор: XU XIAODONG, ZHU ZHIYUAN, YANG JIANPING, SUN SHUOMENG, XIAODONG XU, ZHIYUAN ZHU, JIANPING YANG, SHUOMENG SUN
Принадлежит:

The invention relates to an anti-carburetion treatment method for a low carbon steel smelting LF furnace, which belongs to the technical filed of the refinement through an LF furnace. When low carbon steel is smelted, the slag melting operation is independently completed in a refining position, three to five minutes before the heating operation is performed on the molten steel, the agitation to argon gas is performed during slag melting, the flow quantity of argon gas is 700 L/ min to 800 L/ min, and the pressure is 0.2 MPa to 0.8 MPa; the heating and the desulphurization operation are performed by utilizing an electrode after the slag material is melted, to prevent the carburetion during the refining process. The anti-carburetion treatment method has the advantages that the average carburetion of 0.033 percent during the pipeline steel smelting is reduced to the average carburetion of 0.023 percent to 0.018 percent during the pipeline steel smelting; the average carbon dropping in the ...

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Номер записи: 5
11-08-2010 дата публикации

Alloying process for stably and precisely controlling molybdenum content in steel

Номер: CN0101525718B
Автор: HAO NING, SHI LEI, SUN SHUOMENG, WANG DONGZHU, LIU JINGANG, WANG WENJUN, JIANG ZHONGHANG, ZHANG LIJUN, MA QINGSHEN, SHI ZHIQIANG, LIU CHENG, ZHU ZHIYUAN, LI ZHANJUN, SHEN FENG, LIU YANG, WANG YANFENG, SHI SHUDONG, NING HAO, LEI SHI, SHUOMENG SUN, DONGZHU WANG, JINGANG LIU, WENJUN WANG, ZHONGHANG JIANG, LIJUN ZHANG, QINGSHEN MA, ZHIQIANG SHI, CHENG LIU, ZHIYUAN ZHU, ZHANJUN LI, FENG SHEN, YANG LIU, YANFENG WANG, SHUDONG SHI
Принадлежит:

The invention relates to an alloying process for stably and precisely controlling molybdenum content in steel, belonging to the technical field of steel production. The process comprises that deoxidizer and ferro molybdenum are sequentially added when tapping reaches 1/5-1/4; the ferro molybdenum is block-shaped ferro molybdenum with granularity of 20-50mm, wherein, the ferro molybdenum with granularity smaller than 20mm is not more than 5%; addition of the ferro molybdenum is controlled according to target content or content lower than target; ferro molybdenum yield is calculated as 95%-100%; however, the standard is that molybdenum content in steel is not more than the target content. Argon blowing flux from bottom of the ladle during the whole tapping process is controlled at 6-8 Nl/(min.t); the tapping temperature is 1680-1740 DEG C; block-shaped ferro molybdenum of 5-30mm is used in refining; refined initial steel sample is examined and ferro molybdenum is complemented according to ...

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Номер записи: 6
30-06-2010 дата публикации

RH-DS furnace convenient for deep sulfur removal vacuum treatment

Номер: CN0101760584A
Автор: SHI SHUDONG, SHI ZHIQIANG, SUN SHUOMENG, WANG FENGQIN, WANG WENJUN, XU XIAODONG, ZHU ZHIYUAN, SHUDONG SHI, ZHIQIANG SHI, SHUOMENG SUN, FENGQIN WANG, WENJUN WANG, XIAODONG XU, ZHIYUAN ZHU
Принадлежит:

The invention provides a RH-DS furnace convenient for deep sulfur removal vacuum treatment and belongs to the technical field of molten steel secondary refining. The furnace comprises an oxygen lance, a vacuum pump system, a vacuum chamber main body, a charging chute, a dip pipe, a steel ladle and a steel ladle bottom blowing argon permeable brick, wherein a top blowing oxygen lance is arranged on the top of the vacuum chamber main body; the upper part of the vacuum chamber is connected with the vacuum pump system; the charging chute is arranged on one side of the vacuum chamber main body; the lower part of the vacuum chamber is connected with the dip pipe by a flange; the dip pipe is inserted in the molten steel in the lower part of the steel ladle in the process of vacuum treatment; and the blowing argon permeable brick is arranged on the eccentric position of the steel ladle bottom. The furnace of the invention has the advantages that the temperature in the vacuum chamber can be ensured ...

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Номер записи: 7
30-06-2010 дата публикации

Smelting method for controlling content of nitrogen in low-carbon steel

Номер: CN0101760582A
Автор: XIA CHEN, CHUNYANG GUAN, NING HAO, ZHONGHANG JIANG, HAITAO JIANG, GUANGSHUANG LI, ZHANJUN LI, CHENG LIU, JIANMING LIU, JINGANG LIU, YANG LIU, YANCHUN LU, QINGSHEN MA, SHUDONG SHI, ZHIQIANG SHI, SHUOMENG SUN, XIAO WAN, DONGZHU WANG, WENJUN WANG, YANFENG WANG, SHANGHAO WEI, YAOHUAN WEI, CUIHONG XIE, GUOWEI YANG, ZHIYUAN ZHU, CHEN XIA, GUAN CHUNYANG, HAO NING, JIANG ZHONGHANG, JIANG HAITAO, LI GUANGSHUANG, LI ZHANJUN, LIU CHENG, LIU JIANMING, LIU JINGANG, LIU YANG, LU YANCHUN, MA QINGSHEN, SHI SHUDONG, SHI ZHIQIANG, SUN SHUOMENG, WAN XIAO, WANG DONGZHU, WANG WENJUN, WANG YANFENG, WEI SHANGHAO, WEI YAOHUAN, XIE CUIHONG, YANG GUOWEI, ZHU ZHIYUAN
Принадлежит:

The invention relates to a smelting method for controlling the content of nitrogen in low-carbon steel, which belongs to the technical field of steelmaking. The process characteristics are as follows: the smelting slag of a converter is controlled to be 60kg/t steel-120kg/t steel, and the alkalinity is 5 to 7; the circular flow is tapped and strongly deoxidized, and slag is added into the bottom of a ladle before tapping; the arrival temperature of an LF furnace is ensured, the LF furnace refines and the primary heating time is controlled to be 1min to 15min, so as to reduce nitrogen increase; through RH vacuum treatment, the flow of argon is controlled and increased, the vacuum treatment time is more than or equal to 10min and the vacuum degree, and heat insulation agent is uniformly spread on the surface of the ladle after the vacuum treatment; a double-loop suture sleeve and a 3mm-7mm washer are adopted in the casting process and are sealed and protected by argon; and covering agent ...

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Номер записи: 8
09-09-2009 дата публикации

Alloying process for stably and precisely controlling molybdenum content in steel

Номер: CN0101525718A
Автор: LIU JINGANG, ZHU ZHIYUAN, LIU YANG, LI ZHANJUN, HAO NING, SUN SHUOMENG, WANG YANFENG, WANG WENJUN, JIANG ZHONGHANG, MA QINGSHEN, SHI ZHIQIANG, WANG DONGZHU, LIU CHENG, SHI SHUDONG, SHI LEI, SHEN FENG, ZHANG LIJUN, JINGANG LIU, ZHIYUAN ZHU, YANG LIU, ZHANJUN LI, NING HAO, SHUOMENG SUN, YANFENG WANG, WENJUN WANG, ZHONGHANG JIANG, QINGSHEN MA, ZHIQIANG SHI, DONGZHU WANG, CHENG LIU, SHUDONG SHI, LEI SHI, FENG SHEN, LIJUN ZHANG
Принадлежит:

The invention relates to an alloying process for stably and precisely controlling molybdenum content in steel, belonging to the technical field of steel production. The process comprises that deoxidizer and ferro molybdenum are sequentially added when tapping reaches 1/5-1/4; the ferro molybdenum is block-shaped ferro molybdenum with granularity of 20-50mm, wherein, the ferro molybdenum with granularity smaller than 20mm is not more than 5%; addition of the ferro molybdenum is controlled according to target content or content lower than target; ferro molybdenum yield is calculated as 95%-100%; however, the standard is that molybdenum content in steel is not more than the target content. Argon blowing flux from bottom of the ladle during the whole tapping process is controlled at 6-8 Nl/(min.t); the tapping temperature is 1680-1740 DEG C; block-shaped ferro molybdenum of 5-30mm is used in refining; refined initial steel sample is examined and ferro molybdenum is complemented according to ...

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Номер записи: 9
17-12-2008 дата публикации

Refined-smelting ladle furnace carbon control deep desulphurization method for ultra-low-carbon steel production

Номер: CN0101323896A
Автор: ZHANJUN LI, WENJUN WANG, JINGANG LIU, YANCHUN LU, NING HAO, FENG SHEN, YANFENG WANG, QINGSHEN MA, ZHONGHANG JIANG, SHUOMENG SUN, ZHIYUAN ZHU, LI ZHANJUN, WANG WENJUN, LIU JINGANG, LU YANCHUN, HAO NING, SHEN FENG, WANG YANFENG, MA QINGSHEN, JIANG ZHONGHANG, SUN SHUOMENG, ZHU ZHIYUAN
Принадлежит:

The invention discloses a method for controlling carbon and deep desulphurization by a refined-smelting ladle furnace in the production of extreme low carbon steel, pertaining to the technical field of ladle refining. The technology of the invention is that the amount of roughing slag of a converter is controlled and the thickness of the slag is 30 mm to 60mm; the temperature of molten steel in an LF furnace ranges from 1590 DEG C to 1640 DEG C and the content of Al in the steel is equal to 0.05 percent to 0.09 percent; 6 to 12 kg/ton of refining slag with high basicity and 0.4 to 1.0 kg/ton of Al granules are added; the flow of bottom-blowing argon gas is controlled during the rapid deep desulphurization refining process. On the condition that no electrode is available, argon gas with mass flow of 6 to 8NL/ (min question mark t) is adopted for melting slag. After slag melting, the electrode is arranged to control the flow of argon gas to 4.8-6NL/ (min question mark t) and carbon pickup ...

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Номер записи: 10
18-05-2011 дата публикации

Method for producing ultra-low-carbon steel

Номер: CN0101550475B
Автор: LI ZHANJUN, WANG WENJUN, ZHU ZHIYUAN, JIANG HAITAO, JIANG ZHONGHANG, SHI SHUDONG, LIU JINGANG, HAO NING, LU YANCHUN, LIU YANG, SUN SHUOMENG, WANG DONGZHU, SHI ZHIQIANG, MA QINGSHEN, LIU JIANMING, WANG YANFENG, WAN XIAO, WANG ZHENMING, XIE CUIHONG, LI GUANGSHUANG, GUAN CHUNYANG, WEI YAOHUAN, YANG GUOWEI, ZHANJUN LI, WENJUN WANG, ZHIYUAN ZHU, HAITAO JIANG, ZHONGHANG JIANG, SHUDONG SHI, JINGANG LIU, NING HAO, YANCHUN LU, YANG LIU, SHUOMENG SUN, DONGZHU WANG, ZHIQIANG SHI, QINGSHEN MA, JIANMING LIU, YANFENG WANG, XIAO WAN, ZHENMING WANG, CUIHONG XIE, GUANGSHUANG LI, CHUNYANG GUAN, YAOHUAN WEI, GUOWEI YANG
Принадлежит:

A method for producing ultra-low-carbon steel belongs to steel-making technology field. The process route is: molten iron desulfuration preprocess -converter smelting -RH vacuum process -slab continuous casting. The iron desulfuration preprocess applies blowing magnesium granules for desulfuration; the converter smelting terminal carbon content and oxygen activity of molten steel; applying slag dam operation when tapping without deoxidation; the ladle furnace proceeds operation of top slag modification and temperature controlling; RH vacuum processing to control the maximum vacuum; applying Alfor deoxidation when the decarburization is finished, and alloying if the deoxidation is finished and assuring the deep vacuum processing time after the deoxidation; calming the molten steel when thevacuum is finished; applying non-carbon covering agent and non-carbon protection slag in the slab casting process; the continuous casting process uses full protection casting, and the casting processcontrols ...

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Номер записи: 11
01-12-2010 дата публикации

RH vacuum processing technique for molten steel dehydrogenation

Номер: CN0101525681B
Автор: LIU JINGANG, SHI SHUDONG, XIE CUIHONG, HAO NING, SUN SHUOMENG, JIANG ZHONGHANG, LI GUANGSHUANG, WANG WENJUN, SHI ZHIQIANG, WANG YANFENG, GUAN CHUNYANG, WAN XIAO, MA QINGSHEN, LIU JIANMING, WEI SHANGHAO, LIU CHENG, ZHU ZHIYUAN, LU YANCHUN, JIANG HAITAO, LI ZHANJUN, WANG DONGZHU, JINGANG LIU, SHUDONG SHI, CUIHONG XIE, NING HAO, SHUOMENG SUN, ZHONGHANG JIANG, GUANGSHUANG LI, WENJUN WANG, ZHIQIANG SHI, YANFENG WANG, CHUNYANG GUAN, XIAO WAN, QINGSHEN MA, JIANMING LIU, SHANGHAO WEI, CHENG LIU, ZHIYUAN ZHU, YANCHUN LU, HAITAO JIANG, ZHANJUN LI, DONGZHU WANG
Принадлежит:

The invention relates to an RH vacuum processing technique for molten steel dehydrogenation, belonging to the technical field of steel production. The process comprises that alloys and raw and accessory materials, which are used by a RH furnace, are baked; the alloy components are adjusted into internal control range before molten steel enters the RH furnace, thereby ensuring reduction of component adjustment to the maximum degree in the RH vacuum treating process; an RH vacuum chamber is baked before vacuum treatment is carried out on the molten steel, thereby ensuring temperature of flame-proof material in the vacuum chamber is at 1100-1200 DEG C; oxygen activity of the molten steel into the RH furnace is not higher than 8ppm; flux of argon is raised at 8-12 NL/(min.t); time between start of vacuum treatment and deep vacuum is controlled at 2.5-4 minutes; high vacuum of the vacuum chamber is maintained at 10-100Pa; the RH vacuum treatment time is controlled at 15-30min, wherein, thedeep ...

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Номер записи: 12
13-04-2011 дата публикации

Desulphurization powder used in steel ladle powder injection refining process and production method thereof

Номер: CN0102010935A
Автор: Bai Xuejun, Chai Yuguo, Chen Xia, Dong Zhimin, Guan Chunyang, Hao Ning, Jiang Dongcai, Jiang Zhongxing, Jiang Haitao, Li Guangshuang, Li Tao, Li Zhanjun, Liu Cheng, Liu Jingang, Shi Zhiqiang, Sun Shuomeng, Wan Xiao, Wang Dongzhu, Wang Haoran, Wang Lifeng, Wang Wenjun, Wang Yanfeng, Wei Shanghao, Wei Yaohuan, Wu Bin, Xie Cuihong, Yang Guowei, Yang Rongguang, Zhang Jianshi, Zhu Zhiyuan
Принадлежит:

The invention provides a desulphurization powder used in steel ladle powder injection refining process and a production method thereof. The powder injection desulphurization powder comprises the following components by weight percent: 75-90% of CaO, 0-5% of SiO2, 0-8% of MgO, 0-7% of CaF2, 0-0.035% of S, and the balance of impurities. The production method comprises: three-level common metallurgical lime and fluorite ore fines FF-95 are mechanically mixed at the matching ratio of 16: 1; and then a pulverizing mill is adopted to grind the mixture to obtain powder with the particle size of 100-200. The invention has the advantages that the steel ladle powder injection refining process can meet the demand of different steel types with different sulphur contents by adopting the desulphurization powder, the usage amount of desulphurization powder is different, and desulphurization rate is 20-80%; a low-cost short flow simplex process production can be directly carried out, and a duplex process ...

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Номер записи: 13
11-08-2010 дата публикации

Process for washing, pre-desulfurizing and refining tapping steel slag of converter

Номер: CN0101798612A
Автор: XIA CHEN, CHUNYANG GUAN, NING HAO, ZHONGHANG JIANG, HAITAO JIANG, GUANGSHUANG LI, ZHANJUN LI, CHENG LIU, JIANMING LIU, JINGANG LIU, YANG LIU, YANCHUN LU, QINGSHEN MA, SHUDONG SHI, ZHIQIANG SHI, SHUOMENG SUN, XIAO WAN, DONGZHU WANG, WENJUN WANG, YANFENG WANG, SHANGHAO WEI, YAOHUAN WEI, CUIHONG XIE, GUOWEI YANG, JIANSHI ZHANG, ZHIYUAN ZHU, CHEN XIA, GUAN CHUNYANG, HAO NING, JIANG ZHONGHANG, JIANG HAITAO, LI GUANGSHUANG, LI ZHANJUN, LIU CHENG, LIU JIANMING, LIU JINGANG, LIU YANG, LU YANCHUN, MA QINGSHEN, SHI SHUDONG, SHI ZHIQIANG, SUN SHUOMENG, WAN XIAO, WANG DONGZHU, WANG WENJUN, WANG YANFENG, WEI SHANGHAO, WEI YAOHUAN, XIE CUIHONG, YANG GUOWEI, ZHANG JIANSHI, ZHU ZHIYUAN
Принадлежит:

The invention relates to a process for washing, pre-desulfurizing and refining tapping steel slag of a converter, which belongs to the technical field of steel making. The process is characterized in that the steel-tapping temperature of the converter is 1,650-1,720DEG C; strongly deoxidizing by adopting ferro-aluminium the addition of which is 3-5kg/t of steel when the steel is tapped for 1.5min; adding synthetic slag the addition of which is 5-8kg/t of steel at the bottom of a steel ladle before tapping steel; lime the addition of which is 4-6kg/t of steel is continuously added along steel stream when the steel is tapped for 2 min; the flow rate of argon gas bottom blowing from the ladle in the steel tapping process is controlled to be 3-5NL/(min.t); aluminum particles the addition of which is 0.5-0.8kg/t of steel are added into a slag surface after finishing tapping for deoxidizing the slag surface; and after finishing slag washing, the oxidability of steel slag is expressed by the following ...

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Номер записи: 14
09-06-2010 дата публикации

Production method of steel plate for blast furnace jacket

Номер: CN0101306499B
Автор: HELONG SUI, YINLIANG LIU, JINMING ZHOU, SHIPING TIAN, DONGZHU WANG, QINGSHEN MA, CHUNWEI YANG, XIAODONG XU, JIANPING YANG, LIJIAN WANG, ZHONGHANG JIANG, WEIXING ZHANG, YUANCHUN HE, KAIZHAO SHEN, XUEJUN BAI, LEI SHI, YIPING SHEN, GUANGSHU WU, WANG SEN, CHANGHAO HUO, LIUXIAOHUI, SHUOMENG SUN, ZHIYUAN ZHU, SUI HELONG, LIU YINLIANG, ZHOU JINMING, TIAN SHIPING, WANG DONGZHU, MA QINGSHEN, YANG CHUNWEI, XU XIAODONG, YANG JIANPING, WANG LIJIAN, JIANG ZHONGHANG, ZHANG WEIXING, HE YUANCHUN, SHEN KAIZHAO, BAI XUEJUN, SHI LEI, SHEN YIPING, WU GUANGSHU, HUO CHANGHAO, SUN SHUOMENG, ZHU ZHIYUAN
Принадлежит:

A method for producing a blast furnace mantle used armor plate belongs to the medium plate production technology field. The production process includes the following steps: molten steel is smelted bya converter and treated by LF and RH furnaces, thereby obtaining the accredited 250mm continuous casting via casting; then the continuous casting is heated to 1150-1300 DEG C in the furnace for 200-300min, and subjected to high-pressure water scale removal after being out of the furnace and rolling after entering a 4300mm rolling mill; the rolled armor plate is subjected to water-cooling with thefinal cooling temperature of 670-720 DEG C; the water-cooled armor plate is subjected to normalizing treatment at the normalizing temperature of 890-930 DEG C after off-line-stacking for 36-48h, and the cooling manner is air-cooling. The method has the advantages of higher armor plate yield, reduced production cost and simple process flow.

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Номер записи: 15
09-12-2009 дата публикации

Method for improving molten steel cleanness of medium plate low carbon aluminum-killed steel

Номер: CN0101597666A
Автор: NING HAO, WENJUN WANG, ZHIYUAN ZHU, JINGANG LIU, ZHANJUN LI, YANFENG WANG, ZHONGHANG JIANG, QINGSHEN MA, JIANMING LIU, LIFENG WANG, SHUOMENG SUN, HAITAO JIANG, YANCHUN LU, HAO NING, WANG WENJUN, ZHU ZHIYUAN, LIU JINGANG, LI ZHANJUN, WANG YANFENG, JIANG ZHONGHANG, MA QINGSHEN, LIU JIANMING, WANG LIFENG, SUN SHUOMENG, JIANG HAITAO, LU YANCHUN
Принадлежит:

The invention is a method for improving molten steel cleanness of medium plate low carbon aluminum-killed steel, belonging to the technical field of steelmaking. The method comprises the following steps: controlling the slag composition in an Ladle Furnace (LF), the white slag refining time in the LF being 40-60min, and the target value of the acid-soluble aluminum (Als) in the refining process being 0.030-0.080%; the blowing argon content from ladle bottom being 3-8NL/min-t; a RH furnace adopting a directly pumping deep vacuum treating mode, controlling the highest vacuum level at 10-100Pa, and ensuring the vacuum processing time to be 10-30 min; feeding 400-600m SiCa line in the molten steel after finishing vacuuming of the RH furnace, ensuring Ca in the molten steel to be 10-40ppm, and carrying out soft blowing on the molten steel after wire feeding. Finally the TO in the molten steel is up to 5-100ppm before the RH bull ladle is sent to a casting machine and the content of the impurity ...

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Номер записи: 16
22-09-2010 дата публикации

Refined-smelting ladle furnace carbon control deep desulphurization method for ultra-low-carbon steel production

Номер: CN0101323896B
Автор: WENJUN WANG, ZHONGHANG JIANG, NING HAO, ZHIYUAN ZHU, QINGSHEN MA, JINGANG LIU, YANFENG WANG, SHUOMENG SUN, ZHANJUN LI, YANCHUN LU, FENG SHEN, WANG WENJUN, JIANG ZHONGHANG, HAO NING, ZHU ZHIYUAN, MA QINGSHEN, LIU JINGANG, WANG YANFENG, SUN SHUOMENG, LI ZHANJUN, LU YANCHUN, SHEN FENG
Принадлежит:

The invention discloses a method for controlling carbon and deep desulphurization by a refined-smelting ladle furnace in the production of extreme low carbon steel, pertaining to the technical field of ladle refining. The technology of the invention is that the amount of roughing slag of a converter is controlled and the thickness of the slag is 30 mm to 60mm; the temperature of molten steel in an LF furnace ranges from 1590 DEG C to 1640 DEG C and the content of Al in the steel is equal to 0.05 percent to 0.09 percent; 6 to 12 kg/ton of refining slag with high basicity and 0.4 to 1.0 kg/ton of Al granules are added; the flow of bottom-blowing argon gas is controlled during the rapid deep desulphurization refining process. On the condition that no electrode is available, argon gas with mass flow of 6 to 8NL/ (min question mark t) is adopted for melting slag. After slag melting, the electrode is arranged to control the flow of argon gas to 4.8-6NL/ (min question mark t) and carbon pickup ...

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Номер записи: 17
08-12-2010 дата публикации

Calcium treating method for reducing size of D and Ds type of inclusions containing aluminum steel

Номер: CN0101906502A
Автор: YANCHUN LV, WENJUN WANG, YANG LIU, WEIHUA JIANG, ZHIYUAN ZHU, ZHONGHANG JIANG, QINGSHEN MA, RU JIN, ZHANJUN LI, HAIBAO WANG, YULONG WANG, SHUOMENG SUN, SHANGHAO WEI, YAOHUAN WEI, SHUDONG SHI, XING WANG, LV YANCHUN, WANG WENJUN, LIU YANG, JIANG WEIHUA, ZHU ZHIYUAN, JIANG ZHONGHANG, MA QINGSHEN, JIN RU, LI ZHANJUN, WANG HAIBAO, WANG YULONG, SUN SHUOMENG, WEI SHANGHAO, WEI YAOHUAN, SHI SHUDONG, WANG XING
Принадлежит:

The invention discloses a calcium treating method for reducing the size of D and Ds types of inclusions containing aluminum steel, belonging to the field of steelmaking and refining and mainly relating to the steel ladle bottom blowing strength before and after calcium treatment, the control of inclusion denaturation treatment time and the selection of the calcium treatment time. In the invention, the calcium treatment is carried out after soft blowing ends, and at the moment, large grain inclusions sufficiently float upwards; and small grain inclusions left in steel are subjected to denaturation treatment, and then pouring is carried out, wherein the soft blowing time before the calcium treatment is controlled to be 5-20min, the soft bottom blowing flow rate is controlled to be smaller than 2L/min.t, the calcium content of molten steel after the calcium treatment is controlled to be 5-20ppm, the bottom blowing strength during the calcium treatment is smaller than 5L/min.t, the soft blowing ...

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Номер записи: 18
25-07-2012 дата публикации

Ladle furnace refining stirring process for preventing large quantity of slags from lumping by weak bottom blowing

Номер: CN0102010937B
Автор: JINGANG LIU, YONGDONG LI, BENHAI LI, ZHONGHANG JIANG, ZHIYUAN ZHU, ZHANJUN LI, ZHIQIANG SHI, WENJUN WANG, NING HAO, YANFENG WANG, LIFENG WANG, HAITAO JIANG, XUEJUN BAI, SHUOMENG SUN, DONGCAI JIANG, QISONG SUN, DONGZHU WANG, WANG SEN, CHENG LIU, LEI SHI, LI XU, YUGUO CHAI, XIA CHEN, JIANSHI ZHANG, XINHUI YAN, LIJUN ZHANG, TAO LI, LIU JINGANG, LI YONGDONG, LI BENHAI, JIANG ZHONGHANG, ZHU ZHIYUAN, LI ZHANJUN, SHI ZHIQIANG, WANG WENJUN, HAO NING, WANG YANFENG, WANG LIFENG, JIANG HAITAO, BAI XUEJUN, SUN SHUOMENG, JIANG DONGCAI, SUN QISONG, WANG DONGZHU, LIU CHENG, SHI LEI, XU LI, CHAI YUGUO, CHEN XIA, ZHANG JIANSHI, YAN XINHUI, ZHANG LIJUN, LI TAO
Принадлежит:

The invention discloses a ladle furnace refining stirring process for preventing large quantity of slags from lumping by weak bottom blowing, belonging to the technical filed of ladle refining. The process of the invention is realized by an on-line wire feeding device and a bottom blowing process as follows: controlling the aluminum content in the steel before the ladle refining to be 0.02-0.04%,and starting ladle bottom blowing for stirring; adding 2/1-2/3 of the required amount of the slags; feeding aluminium wires into a steel ladle by the wire feeding device, wherein the wire feeding rate is 2-3m/second, the time for starting wire feeding is the same as the time for starting adding the slags or is one-third of the time of adding the slags, and the aluminum content in the steel after the wires are fed is 0.04-0.10%;and smoothly dispersing and smelting the slag under the conditions of the aluminium wire mechanical rabbling and bottom blowing stirring, and then normally refining, thus ...

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Номер записи: 19
25-01-2012 дата публикации

Process for washing, pre-desulfurizing and refining tapping steel slag of converter

Номер: CN0101798612B
Автор: CHEN XIA, GUAN CHUNYANG, HAO NING, JIANG ZHONGHANG, JIANG HAITAO, LI GUANGSHUANG, LI ZHANJUN, LIU CHENG, LIU JIANMING, LIU JINGANG, LIU YANG, LU YANCHUN, MA QINGSHEN, SHI SHUDONG, SHI ZHIQIANG, SUN SHUOMENG, WAN XIAO, WANG DONGZHU, WANG WENJUN, WANG YANFENG, WEI SHANGHAO, WEI YAOHUAN, XIE CUIHONG, YANG GUOWEI, ZHANG JIANSHI, ZHU ZHIYUAN, XIA CHEN, CHUNYANG GUAN, NING HAO, ZHONGHANG JIANG, HAITAO JIANG, GUANGSHUANG LI, ZHANJUN LI, CHENG LIU, JIANMING LIU, JINGANG LIU, YANG LIU, YANCHUN LU, QINGSHEN MA, SHUDONG SHI, ZHIQIANG SHI, SHUOMENG SUN, XIAO WAN, DONGZHU WANG, WENJUN WANG, YANFENG WANG, SHANGHAO WEI, YAOHUAN WEI, CUIHONG XIE, GUOWEI YANG, JIANSHI ZHANG, ZHIYUAN ZHU
Принадлежит:

The invention relates to a process for washing, pre-desulfurizing and refining tapping steel slag of a converter, which belongs to the technical field of steel making. The process is characterized in that the steel-tapping temperature of the converter is 1,650-1,720DEG C; strongly deoxidizing by adopting ferro-aluminium the addition of which is 3-5kg/t of steel when the steel is tapped for 1.5min; adding synthetic slag the addition of which is 5-8kg/t of steel at the bottom of a steel ladle before tapping steel; lime the addition of which is 4-6kg/t of steel is continuously added along steel stream when the steel is tapped for 2 min; the flow rate of argon gas bottom blowing from the ladle in the steel tapping process is controlled to be 3-5NL/(min.t); aluminum particles the addition of which is 0.5-0.8kg/t of steel are added into a slag surface after finishing tapping for deoxidizing the slag surface; and after finishing slag washing, the oxidability of steel slag is expressed by the following ...

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Номер записи: 20
07-10-2009 дата публикации

A method for fast and deep desulfurization of low-carbon aluminum-killed steel

Номер: CN0101550513A
Автор: NING HAO, WENJUN WANG, ZHIYUAN ZHU, JINGANG LIU, ZHANJUN LI, YANFENG WANG, ZHONGHANG JIANG, QINGSHEN MA, JIANMING LIU, LIFENG WANG, SHUOMENG SUN, HAITAO JIANG, YANCHUN LU, HAO NING, WANG WENJUN, ZHU ZHIYUAN, LIU JINGANG, LI ZHANJUN, WANG YANFENG, JIANG ZHONGHANG, MA QINGSHEN, LIU JIANMING, WANG LIFENG, SUN SHUOMENG, JIANG HAITAO, LU YANCHUN
Принадлежит:

A method for fast and deep desulfurization of low-carbon aluminum-killed steel pertains to the technical field of steel-making production. After desulfurization of molten iron, sulfur content is controlled <=0.005% and it is guaranteed that the area of the exposed molten iron is above 90% after slagging off; the sulfur content is controlled <=0.008% in the molten steel at the smelting end point of the converter, and slag is strictly pushed off during tapping; 3-10kg/t of CaO-based slag modifier is added from the bottom of the ladle before tapping, 4-8kg/t of ferro-aluminum is added during tapping, and 0.2-1.5kg/t of aluminum pellets are added on the slag surface after tapping; during LF refining, the composition of the slag is controlled as: 50-60% CaO, 0-8% SiO2, 25-35% Al2O3, 0-13% MgO, 3-5% CaF2, 0-2% (FeO+MnO) and other unavoidable impurities. During LF refining, the target value of acid-soluble aluminum [Als] in steel is 0.030-0.080%; argon flow rate at the bottom of the ladle is 3 ...

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Номер записи: 21
14-09-2011 дата публикации

New smelting process for producing medium carbon steel by adopting steel ladle powder injection technique

Номер: CN0102181604A
Автор: LI ZHANJUN, LI BENHAI, LI YONGDONG, LIU JINGANG, JIANG ZHONGXING, WANG WENJUN, ZHU ZHIYUAN, WANG YANFENG, CHAI YUGUO, CHEN XIA, HAO NING, WU BIN, YUAN HUI, BAI XUEJUN, WANG HAORAN, JIANG HAITAO, SUN SHUOMENG, WANG DONGZHU, SHI ZHIQIANG, ZHANG JIANSHI, YANG RONGGUANG, WANG LIFENG, WEI SHANGHAO, ZHOU JINMING, LI GUANGSHUANG, WANG ZHIGANG, WAN XIAO, XIE CUIHONG, LIU CHENG, YAN XINHUI, YANG GUOWEI, WEI YAOHUAN, GUAN CHUNYANG, LI TAO, GAO YUAN, DONG ZHIMIN, ZHANJUN LI, BENHAI LI, YONGDONG LI, JINGANG LIU, ZHONGXING JIANG, WENJUN WANG, ZHIYUAN ZHU, YANFENG WANG, YUGUO CHAI, XIA CHEN, NING HAO, BIN WU, HUI YUAN, XUEJUN BAI, HAORAN WANG, HAITAO JIANG, SHUOMENG SUN, DONGZHU WANG, ZHIQIANG SHI, JIANSHI ZHANG, RONGGUANG YANG, LIFENG WANG, SHANGHAO WEI, JINMING ZHOU, GUANGSHUANG LI, ZHIGANG WANG, XIAO WAN, CUIHONG XIE, CHENG LIU, XINHUI YAN, GUOWEI YANG, YAOHUAN WEI, CHUNYANG GUAN, TAO LI, YUAN GAO, ZHIMIN DONG
Принадлежит:

The invention discloses a new smelting process for producing medium carbon steel by adopting a steel ladle powder injection technique, belonging to the technical field of steel smelting. The smelting process route is as follows: smelting by a converter; injecting power and refining the steel ladle and continuously casting, wherein carbon content, phosphorus content, sulfur content and tapping temperature at the end point are controlled by smelting by the converter; ferro-aluminium deoxygenation and carbon dust are adopted to blend the carbon in tapping; a power injection process in steel ladle injection power and refining is controlled to convey carrier gas flow rate and power injection velocity; powder consumption is controlled according to the initial sulfur content, so as to realize rapid desulfuration; fine tuning is carried out on the components in the steel when power injection is finished; full-protection casting is adopted in the casting process; and reasonable casting speed is ...

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Номер записи: 22
24-02-2010 дата публикации

External refining ternary synthetic slag for pipe line steel and using method

Номер: CN0101654722A
Автор: WANG WENJUN, SUN SHUOMENG, YANG JIANPING, SHI SHUDONG, XU XIAODONG, WENJUN WANG, SHUOMENG SUN, JIANPING YANG, SHUDONG SHI, XIAODONG XU
Принадлежит:

The invention relates to an external refining ternary synthetic slag for pipe line steel and a using method, belonging to the technical field of external refining of steelmaking; the ingredients of the slag are as follows by weight percent: 80-85 percent of active ash, 8-13 percent of bauxite, 7-12 percent of fine fluorite; the granularity is 5-10mm. in the using method, the ingredients are addedin batches in the refining process, and the total adding amount is 8-15kg steel of per ton; the specific using steps are that: 50-60 percent of total amount of the needed synthetic slag is added whenmolten steel is arranged at a processing position of an LF furnace, argon flow rate is set as 600-700NL/min, after the synthetic slag is completely molten, bottom electrode temperature-rising desulfuration is carried out; after smelting is carried out for 8-12 minutes, the remaining 30-40 percent of the synthetic slag is added, and the temperature-rising desulfuration is carried out continuously;after ...

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Номер записи: 23
03-03-2010 дата публикации

Steel ladle bottom argon blowing technology for removing non-metallic inclusion in molten steel

Номер: CN0101660023A
Автор: WANG WENJUN, LI ZHANJUN, LIU JINGANG, HAO NING, ZHU ZHIYUAN, JIANG ZHONGHANG, LU YANCHUN, WANG DONGZHU, SHI ZHIQIANG, SUN SHUOMENG, LIU YANG, WENJUN WANG, ZHANJUN LI, JINGANG LIU, NING HAO, ZHIYUAN ZHU, ZHONGHANG JIANG, YANCHUN LU, DONGZHU WANG, ZHIQIANG SHI, SHUOMENG SUN, YANG LIU
Принадлежит:

A steel ladle bottom argon blowing technology for removing non-metallic inclusion in molten steel belongs to the technical field of steelmaking. The specific technical processes are as follows: afterrefining of the molten steel in LF or RH is completed, oxygen activity of the molten steel is guaranteed to 25-30ppm, slag oxidability (FeO% plus MnO%) is within 0-2%, slag CaO/Al2O3 is equal to 1.6-2.2, the temperature of the molten steel is 40-70 DEG C above the temperature of liquid phase line, and the speed of the temperature reduction of the steel ladle is less than 1.5 DEG C/min; after feeding CaSi line in the molten steel, Ca/Al is equal to 0.05-0.09 in the molten steel; the steel ladle adopts double-hole argon blowing at the bottom, the flow of argon blowing is controlled to be 0.6-1.5L/(min t steel), and the time of argon blowing is controlled to be 10-20min. By adopting the argon blowing technology, the total oxygen content of a steel plate can be controlled to be 10-15 ppm, therefore ...

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Номер записи: 24
02-03-2011 дата публикации

Tundish covering agent special for smelting pipeline steel

Номер: CN0101301679B
Автор: ZHIYUAN ZHU, XIAODONG XU, WENJUN WANG, JIANPING YANG, ZHENMING WANG, SHUOMENG SUN, ZHU ZHIYUAN, XU XIAODONG, WANG WENJUN, YANG JIANPING, WANG ZHENMING, SUN SHUOMENG
Принадлежит:

The invention provides a tundish covering agent specially used for pipeline steelmaking. According to the weight percentage, the covering agent comprises 4-6% of C, 20-40% of CaO, 7-9% of MgO, 2.13-17% of SiO, 5-7% of NaO, 18-20% of Al2O3 and the rest are minute quantities of FeT and KO. The tundish covering agent has the advantages that the low carbon high alkalinity tundish covering agent ensures the continuous casting carbon increasing is less tan 0.005% or even without carbon increasing, and effectively reduces the content of sundries in the molten steel.

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Номер записи: 25