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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 30. Отображено 30.
12-08-2009 дата публикации

Cogged ingot continuous casting crystallizer protecting slag and preparation method thereof

Номер: CN0101502871A
Автор: HE QINGWEN, WANG GUANGLIAN, SHEN JINGXIA, ZHANG PENG, LI MENG, LIANG JIANGUO, DIAO FENG, QINGWEN HE, GUANGLIAN WANG, JINGXIA SHEN, PENG ZHANG, MENG LI, JIANGUO LIANG, FENG DIAO
Принадлежит:

The invention relates to a cogged ingot continuous casting mold powder, belonging to the iron and steel smelting technical field. The mold powder comprises the following chemical components with the weight percent of 30-35 percent of SiO2, 25-30 percent of CaO, 2.5-3.5 percent of MgO, 1.5-2.5 percent of Fe2O3, 3.5-4.5 percent of Al2O3, 4.5-5.5 percent of NaF2+CaF2, 5.5-6.5 percent of Na2O+K2O, 11-14.5 percent of solid carbon, and the rest is binder used for pelleting and water. A preparation method of the mold powder is also provided by the invention. The mold powder is exclusively applied to the cogged ingot continuous casting mold powder, in particular to cogged ingot 27SiMn continuous casting mold. The zero defect production of continuous casting can be realized, the hot delivery and hot charging of the continuous casting can be guaranteed, the systematic energy consumption from the continuous casting to rolled products can be lowered, the production cycle from the continuous casting ...

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Номер записи: 1
07-09-2011 дата публикации

Low-carbon Mn-Cr steel for engine camshaft and manufacturing method thereof

Номер: CN0101805874B
Автор: SHENGPENG DOU, LIMING FAN, WENYING GE, AIFENG LU, DONG LU, CHUANQING MA, JINGXIA SHEN, FENGJUN SUN, ZHENGLONG ZHAI, HAIXIA ZHANG, HUI ZHUANG, DOU SHENGPENG, FAN LIMING, GE WENYING, LU AIFENG, LU DONG, MA CHUANQING, SHEN JINGXIA, SUN FENGJUN, ZHAI ZHENGLONG, ZHANG HAIXIA, ZHUANG HUI
Принадлежит:

The invention relates to a low-carbon Mn-Cr steel for a camshaft and a manufacturing method thereof. The steel comprises the following components in percentage by weight: 0.17-0.22% of C, 0.17-0.37% of Si, 1.00-1.50% of Mn, 1.00-1.50% of Cr, 0.005-0.025% of P, 0.001-0.020% of S, 0.01-0.20% of Cu, 0.01-0.20% of Ni, 0.010-0.060% of Al, 0-0.15*10-4% of <0> and the balance of Fe and inevitable impurity. The manufacturing method comprises: smelting, alloying, continuously casting, pouring, casting blank, carrying out hot rolling technology and electrosmelting; the terminal point =>0.10%, P <=0.015%, and steel tapping is carried out at the temperature of 1620-1650 DEG C; and LF external refining is carried out, and VD vacuum deaeration is carried out. The invention adopts complete-protection continuously casting, pouring, casting blank and hot rolling to prepare the material. The low-carbon Mn-Cr steel of the invention has high quenching degree and high purity and is used for manufacturing ...

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Номер записи: 2
25-08-2010 дата публикации

Boracic pinion steel and preparation method thereof

Номер: CN0101812643A
Автор: CHENG GUOGUANG, LI FAXING, MA ZUOCANG, SHAO HAIFENG, SHEN JINGXIA, SHI JUNQIANG, SUN YONGXI, WANG GUANGLIAN, WANG XUELI, YU DEHE, ZHANG JUNPING, ZHANG WEI, ZHENG GUIYUN, GUOGUANG CHENG, FAXING LI, ZUOCANG MA, HAIFENG SHAO, JINGXIA SHEN, JUNQIANG SHI, YONGXI SUN, GUANGLIAN WANG, XUELI WANG, DEHE YU, JUNPING ZHANG, WEI ZHANG, GUIYUN ZHENG
Принадлежит:

The invention relates to boracic pinion steel and a preparation method thereof. The boracic pinion steel comprises the following component by weight percent: 0.16 to 0.24 percent of C, less than or equal to 0.35 percent of Si, 0.70 to 1.25 percent of Mn, less than or equal to 0.030 percent of P, less than or equal to 0.03 percent of S, 0.80 to 1.45 percent of Cr, 0.020 to 0.080 percent of Ti, 0.005 to 0.003 percent of B, 0.015 to 0.05 percent of Al, less than 2.5*10-4 percent of H, 30*10-4 to 120 *10-4 percent of N, and less than or equal to 18 *10-4 percent of T.O, Fe and unavoidable foreign matters. The following process route can be adopted for the production: primary smelting furnace (electric furnace or revolving furnace) - refining furnace (LF furnace and the like) - vacuum refining furnace (VD furnace or RH furnace, etc.) - continuous casting - rolling. Compared with 20CrMnTiH and sub-steel number thereof, the boracic pinion steel has high hardenability, stability and narrow flap ...

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Номер записи: 3
20-07-2011 дата публикации

Medium-carbon multi-alloying wear-resistant hot rolling round steel and production method thereof

Номер: CN0101792889B
Автор: FANG KUANJUN, GE WENYING, LU AIFENG, QIN DONG, SHEN JINGXIA, WANG XUELI, XU XIKUN, ZHAI ZHENGLONG, ZHOU YANLI, ZHUANG HUI, KUANJUN FANG, WENYING GE, AIFENG LU, DONG QIN, JINGXIA SHEN, XUELI WANG, XIKUN XU, ZHENGLONG ZHAI, YANLI ZHOU, HUI ZHUANG
Принадлежит:

The invention relates to a medium-carbon multi-alloying wear-resistant hot rolling round steel and a production method thereof, wherein the steel comprises the following compositions in percentage by weight: 0.55-0.65% of C, 0.20-0.37% of Si, 0.75-0.90% of Mn, 0.85-1.20% of Cr, 0.03-0.20% of V, 0.05-0.20% of Mo, 0.010-0.060% of Ti, 0.005-0.025% of P, 0.001-0.020% of S, 0.01-0.20% of Cu, 0.01-0.20of Ni, 0.010-0.060% of Al, the balance of Fe and unavoidable impurities. When manufacturing, the smelting end point of an electric furnace satisfies the relations that C is more than or equal to 0.30% and P is less than or equal to 0.015%, and tapping is carried out when the temperature of molten steel reaches 1630-1670 DEG C; LF external refining adopts continuous casting, pouring and billet casting, the temperature of the molten steel of a continuous casting tundish is controlled within 1500-1520 DEG C, the continuous casting speed is controlled within 0.55-0.75m/min, the soaking temperature of ...

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Номер записи: 4
03-08-2011 дата публикации

Hot-rolled round steel for high carbon manganese and chrome grinding ball and method for producing same

Номер: CN0101792885B
Автор: KUANJUN FANG, WENYING GE, AIFENG LU, DONG LU, BINGTAO MA, DONG QIN, JINGXIA SHEN, FENGJUN SUN, XIKUN XU, ZHENGLONG ZHAI, FANG KUANJUN, GE WENYING, LU AIFENG, LU DONG, MA BINGTAO, QIN DONG, SHEN JINGXIA, SUN FENGJUN, XU XIKUN, ZHAI ZHENGLONG
Принадлежит:

The invention relates to hot-rolled round steel for high carbon manganese and chrome grinding ball and a method for producing the same. The hot-rolled round steel comprises the following components by weight percent: 0.75-0.85 percent of C, 0.17-0.35 percent of Si, 0.70-0.90 percent of Mn, 0.40-0.60 percent of Cr, 0.001-0.020 percent of S, 0.01-0.20 percent of Cu, 0.01-0.20 percent of Ni, 0.010-0.060 percent of Al, 0.005-0.025 percent of P and the balance of Fe and inevitable impurities. The method for producing the hot-rolled round steel comprises the steps of smelting, alloying, casting androlling. The end-point furnace-smelting C is controlled to be 0.4 percent or higher and the end-point furnace-smelting P is controlled to be 0.015 percent or lower; the steel is tapped when the temperature of the molten steel reaches 1630-1670 DEG C; the steel billet is cast continuously; the temperature of the molten steel in a continuously cast tundish is controlled at 1480-1495 DEG C; the continuous ...

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Номер записи: 5
01-06-2011 дата публикации

CrNiMo series easily cut pinion steel and manufacturing method thereof

Номер: CN0102080188A
Автор: WEI ZHANG, GUANGLIAN WANG, JINGXIA SHEN, ZHENGLONG ZHAI, YANMEI JU, MENG LI, GUANGYAN LI, SHENGPENG DOU, FAXING LI, ZHANG WEI, WANG GUANGLIAN, SHEN JINGXIA, ZHAI ZHENGLONG, JU YANMEI, LI MENG, LI GUANGYAN, DOU SHENGPENG, LI FAXING
Принадлежит:

The invention relates to a CrNiMo series easily cut pinion steel and a manufacturing method thereof. The steel comprises the following chemical compositions by weight percent: 0.17-0.23% of C, 0.15-0.37% of Si, 0.60-0.95% of Mn, 0.35-0.65% of Cr, 0.35-0.75% of Ni, 0.15-0.25% of Mo, less than or equal to 0.030% of P, 0.010-0.040% of S, 0.005-0.050% of Al, 0.3-0.6% of Ca/S, and the balance of Fe and micro-impurities. The manufacturing method comprises the following steps: smelting in a primary refining furnace (electric furnace or converter); and carrying out LF+VD (ladle refining + vacuum degassing) or RH external refining, continuous casting and rolling, wherein through the external refining and vacuum degassing treatment, the content of the oxygen in the steel is not more than 15*16<-6>,the content of microelement S is controlled, the cutting property of the CrNiMo series pinion steel is improved, and the steel is suitable for speedily cutting and processing important precision parts.

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Номер записи: 6
03-03-2010 дата публикации

Steel for low-carbon wear-resistant engineering machinery creeper tread and manufacturing method thereof

Номер: CN0101660101A
Автор: ZHAI ZHENGLONG, GE WENYING, WANG GUANGLIAN, XU XIKUN, ZHANG JIKUI, SHEN JINGXIA, SUN FENGJUN, ZHENG GUIYUN, LU DONG, MA ZUOCANG, WANG XUELI, LIANG JIANGUO, MA CHUANQING, ZHENGLONG ZHAI, WENYING GE, GUANGLIAN WANG, XIKUN XU, JIKUI ZHANG, JINGXIA SHEN, FENGJUN SUN, GUIYUN ZHENG, DONG LU, ZUOCANG MA, XUELI WANG, JIANGUO LIANG, CHUANQING MA
Принадлежит:

The invention relates to steel for a low-carbon wear-resistant engineering machinery creeper tread and a manufacturing method thereof. The steel comprises the following chemical components in percentage by weight: 0.17-0.27 percent of C, 0.17-0.37 percent of Si, 0.85-1.20 percent of Mn, 0.10-0.30 percent of Cr, 0.010-0.060 percent of Al, 0.010-0.20 percent of Cu, 0.01-0.20 percent of Ni, 0.003-0.025 percent of P, 0.001-0.025 percent of S, 0.020-0.060 percent of Ti, 0.0005-0.0035 percent of B, 5-20*10<-6> percent of [O], 40-90*10<-6> percent of [N] and the balance of Fe and inevitable impurities. The manufacturing method adopts an electric furnace for smelting and making steel, an LF furnace for external refining and VD for vacuum degassing treatment. The steel and the manufacturing methodhave excellent technical effects.

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Номер записи: 7
30-05-2012 дата публикации

Boracic pinion steel and preparation method thereof

Номер: CN0101812643B
Автор: CHENG GUOGUANG, LI FAXING, MA ZUOCANG, SHAO HAIFENG, SHEN JINGXIA, SHI JUNQIANG, SUN YONGXI, WANG GUANGLIAN, WANG XUELI, YU DEHE, ZHANG JUNPING, ZHANG WEI, ZHENG GUIYUN, GUOGUANG CHENG, FAXING LI, ZUOCANG MA, HAIFENG SHAO, JINGXIA SHEN, JUNQIANG SHI, YONGXI SUN, GUANGLIAN WANG, XUELI WANG, DEHE YU, JUNPING ZHANG, WEI ZHANG, GUIYUN ZHENG
Принадлежит:

The invention relates to boracic pinion steel and a preparation method thereof. The boracic pinion steel comprises the following component by weight percent: 0.16 to 0.24 percent of C, less than or equal to 0.35 percent of Si, 0.70 to 1.25 percent of Mn, less than or equal to 0.030 percent of P, less than or equal to 0.03 percent of S, 0.80 to 1.45 percent of Cr, 0.020 to 0.080 percent of Ti, 0.005 to 0.003 percent of B, 0.015 to 0.05 percent of Al, less than 2.5*10-4 percent of H, 30*10-4 to 120 *10-4 percent of N, and less than or equal to 18 *10-4 percent of T.O, Fe and unavoidable foreign matters. The following process route can be adopted for the production: primary smelting furnace (electric furnace or revolving furnace) - refining furnace (LF furnace and the like) - vacuum refining furnace (VD furnace or RH furnace, etc.) - continuous casting - rolling. Compared with 20CrMnTiH and sub-steel number thereof, the boracic pinion steel has high hardenability, stability and narrow flap ...

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Номер записи: 8
03-06-2009 дата публикации

Boron-iron and iron-titanium composite cored wire and application thereof

Номер: CN0101445855A
Автор: SUN YONGXI, WANG GUANGLIAN, SHEN JINGXIA, ZHANG XICHANG, WANG XUELI, LI MENG, ZHAI ZHENGLONG, YONGXI SUN, GUANGLIAN WANG, JINGXIA SHEN, XICHANG ZHANG, XUELI WANG, MENG LI, ZHENGLONG ZHAI
Принадлежит:

The invention relates to a boron-iron and iron-titanium composite cored wire and the application thereof. The powdery raw materials of the boron-iron and iron-titanium composite cored wire include boron iron and iron titanium, wherein the boron content of boron iron is not less than 9wt%, the titanium content of iron titanium is not less than 25wt%, and the mixing ratio of boron iron to iron titanium depends on the actual needs. The boron-iron and iron-titanium composite cored wire is manufactured by adding boron iron and iron titanium to molten steel at the same time, thereby simplifying the alloying operation in boron steel smelting and stabilizing the control of boron content in steel. Compared with the prior boron iron cored wire, the boron-iron and iron-titanium composite cored wire has the advantages of low proportion of boron iron, small fluctuation of deviation of the addition amount of boron iron, less loss, adequate protection of each boron iron fine particle by titanium element ...

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Номер записи: 9
07-04-2010 дата публикации

Method for vacuum smelting titanium alloy containing titanor metal

Номер: CN0101250660B
Автор: SUN YONGXI, WANG GUANGLIAN, LI MENG, ZHAI ZHENGLONG, SHEN JINGXIA, WANG XUELI, MENG XIANHUA, YONGXI SUN, GUANGLIAN WANG, MENG LI, ZHENGLONG ZHAI, JINGXIA SHEN, XUELI WANG, XIANHUA MENG
Принадлежит:

The invention belongs to the iron and steel smelting field, which particularly relates to a method for smelting titanium-added steel in vacuum and alloying titanium. The invention is characterized inthat titanium alloying is carried on before vacuum treatment. The loss of titanium oxidation in the process of processing molten water in vacuum is no bigger than 0.010%. the problems of unstable titanium content control after molten water is processed in vacuum to alloy titanium and secondary pollution to molten water which is caused in the process of alloying titanium.

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Номер записи: 10
24-02-2010 дата публикации

Continuous casting tundish hollow particle carbon-free covering agent and preparation method thereof

Номер: CN0101653819A
Автор: HE QINGWEN, PENG BAIQUAN, WANG GUANGLIAN, SHEN JINGXIA, ZHAO WEICHENG, FANG XUJIANG, LIANG JIANGUO, MAO CHENGJIE, DIAO FENG, QINGWEN HE, BAIQUAN PENG, GUANGLIAN WANG, JINGXIA SHEN, WEICHENG ZHAO, XUJIANG FANG, JIANGUO LIANG, CHENGJIE MAO, FENG DIAO
Принадлежит:

The invention relates to a continuous casting tundish hollow particle carbon-free covering agent, belonging to the iron and steel smelting field. The carbon-free covering agent comprises the followingcomponents by weight percent: 25-35% of SiO2, 8-20% of Al2O3, less than 1.5% of Fe2O3, 25-35% of CaO, 8-16% of MgO and less than 0.5% of H2O, wherein 0.15-1.0mm of particles account for 90-100% and the bulk specific weight is 0.6-0.9g/cm<3>. The continuous casting tundish hollow particle carbon-free covering agent has good spreadability, when added the covering agent can be molten fast and can cover the whole surface of molten steel, thus avoiding the secondary oxidation of molten steel; the covering agent has function of absorbing inclusion, can purify molten steel and increase the casting blank quality; the covering agent has good thermal insulation property, thus significantly reducing the temperature loss of molten steel; the slag of the covering agent can not incrust and stick to thestopper ...

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Номер записи: 11
13-01-2010 дата публикации

Method for improving and stabilizing boron recovery rate for vacuum smelting steel containing boron

Номер: CN0100580117C
Автор: YONGXI SUN, XUELI WANG, GUANGLIAN WANG, JINGXIA SHEN, MENG LI, ZHENGLONG ZHAI, XIANHUA MENG, SUN YONGXI, WANG XUELI, WANG GUANGLIAN, SHEN JINGXIA, LI MENG, ZHAI ZHENGLONG, MENG XIANHUA
Принадлежит:

The invention belongs to the iron and steel smelting field, which particularly relates to a method for smelting boron steel in vacuum and improving and stabilizing boron recovery ratio. The invention is characterized in that the method comprises the following steps: alloying boron before molten water vacuum disposal, getting molten water sample to analyze after processing molten water in vacuum, wherein boron recovery ratio is stabilized over 90%, achieving the purpose of producing a same boron containing steel grade, wherein the content deviation of smelting component boron among furnaces is less than 2ppm(namely 0.0002%). And the problems of unstable boron recovery ratio after molten water is processed in vacuum to alloy boron and secondary pollution to molten water which is caused in the process of alloying boron.

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Номер записи: 12
19-11-2008 дата публикации

Steel for high performance manganese-containing engineering machinery wheel and method for preparing same

Номер: CN0101307414A
Автор: ZHANG LIPING, SHEN JINGXIA, ZHAI ZHENGLONG, DU XIANBIN, ZHANG CHUNMIAO, ZHANG JINGHAI, LIPING ZHANG, JINGXIA SHEN, ZHENGLONG ZHAI, XIANBIN DU, CHUNMIAO ZHANG, JINGHAI ZHANG
Принадлежит:

The invention relates to a manganese-containing steel and a method for preparing the same. The manganese-containing steel comprises the following chemical compositions in percentage by weight: 0.39 to 0.42 percent of C, 0.17 to 0.37 percent of Si, 1.30 to 1.60 percent of Mn, less than or equal to 0.030 percent of P, less than or equal to 0.030 percent of S, 0.09 to 0.15 percent of Cr, less than or equal to 0.20 percent of Cu, less than or equal to 0.30 percent of Ni, less than or equal to 0.30 percent of Mo and the balance being Fe and microimpurities. The preparation method comprises smelting in an electric furnace, refining outside the furnace, steel billet continuous casting and semicontinuous rolling; after the refining outside the furnace, steel is treated by vacuum degassing in order that the nitrogen content in the steel is not more than 80x10<-6> and the oxygen content in the steel is not more than 15x10<-6>; the soaking temperature of a casting blank in a heating furnace is between ...

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Номер записи: 13
18-08-2010 дата публикации

Low-carbon Mn-Cr steel for engine camshaft and manufacturing method thereof

Номер: CN0101805874A
Автор: SHENGPENG DOU, LIMING FAN, WENYING GE, AIFENG LU, DONG LU, CHUANQING MA, JINGXIA SHEN, FENGJUN SUN, ZHENGLONG ZHAI, HAIXIA ZHANG, HUI ZHUANG, DOU SHENGPENG, FAN LIMING, GE WENYING, LU AIFENG, LU DONG, MA CHUANQING, SHEN JINGXIA, SUN FENGJUN, ZHAI ZHENGLONG, ZHANG HAIXIA, ZHUANG HUI
Принадлежит:

The invention relates to a low-carbon Mn-Cr steel for a camshaft and a manufacturing method thereof. The steel comprises the following components in percentage by weight: 0.17-0.22% of C, 0.17-0.37% of Si, 1.00-1.50% of Mn, 1.00-1.50% of Cr, 0.005-0.025% of P, 0.001-0.020% of S, 0.01-0.20% of Cu, 0.01-0.20% of Ni, 0.010-0.060% of Al, 0-0.15*10-4% of <0> and the balance of Fe and inevitable impurity. The manufacturing method comprises: smelting, alloying, continuously casting, pouring, casting blank, carrying out hot rolling technology and electrosmelting; the terminal point =>0.10%, P <=0.015%, and steel tapping is carried out at the temperature of 1620-1650 DEG C; and LF external refining is carried out, and VD vacuum deaeration is carried out. The invention adopts complete-protection continuously casting, pouring, casting blank and hot rolling to prepare the material. The low-carbon Mn-Cr steel of the invention has high quenching degree and high purity and is used for manufacturing ...

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Номер записи: 14
27-08-2008 дата публикации

Method for vacuum smelting titanium alloy containing titanor metal

Номер: CN0101250660A
Автор: SUN YONGXI, WANG XUELI, WANG GUANGLIAN, SHEN JINGXIA, LI MENG, ZHAI ZHENGLONG, MENG XIANHUA, YONGXI SUN, XUELI WANG, GUANGLIAN WANG, JINGXIA SHEN, MENG LI, ZHENGLONG ZHAI, XIANHUA MENG
Принадлежит:

The invention belongs to the iron and steel smelting field, which particularly relates to a method for smelting titanium-added steel in vacuum and alloying titanium. The invention is characterized in that titanium alloying is carried on before vacuum treatment. The loss of titanium oxidation in the process of processing molten water in vacuum is no bigger than 0.010%. the problems of unstable titanium content control after molten water is processed in vacuum to alloy titanium and secondary pollution to molten water which is caused in the process of alloying titanium.

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Номер записи: 15
02-06-2010 дата публикации

Steel for high performance manganese-containing engineering machinery wheel and method for preparing same

Номер: CN0101307414B
Автор: ZHANG LIPING, ZHAI ZHENGLONG, ZHANG CHUNMIAO, ZHANG JINGHAI, SHEN JINGXIA, DU XIANBIN, LIPING ZHANG, ZHENGLONG ZHAI, CHUNMIAO ZHANG, JINGHAI ZHANG, JINGXIA SHEN, XIANBIN DU
Принадлежит:

The invention relates to a manganese-containing steel and a method for preparing the same. The manganese-containing steel comprises the following chemical compositions in percentage by weight: 0.39 to0.42 percent of C, 0.17 to 0.37 percent of Si, 1.30 to 1.60 percent of Mn, less than or equal to 0.030 percent of P, less than or equal to 0.030 percent of S, 0.09 to 0.15 percent of Cr, less than orequal to 0.20 percent of Cu, less than or equal to 0.30 percent of Ni, less than or equal to 0.30 percent of Mo and the balance being Fe and microimpurities. The preparation method comprises smeltingin an electric furnace, refining outside the furnace, steel billet continuous casting and semicontinuous rolling; after the refining outside the furnace, steel is treated by vacuum degassing in orderthat the nitrogen content in the steel is not more than 80x10<-6> and the oxygen content in the steel is not more than 15x10<-6>; the soaking temperature of a casting blank in a heating furnace is between ...

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Номер записи: 16
15-09-2010 дата публикации

Boron-iron and iron-titanium composite cored wire and application thereof

Номер: CN0101445855B
Автор: ZHAI ZHENGLONG, WANG XUELI, SUN YONGXI, WANG GUANGLIAN, ZHANG XICHANG, SHEN JINGXIA, LI MENG, ZHENGLONG ZHAI, XUELI WANG, YONGXI SUN, GUANGLIAN WANG, XICHANG ZHANG, JINGXIA SHEN, MENG LI
Принадлежит:

The invention relates to a boron-iron and iron-titanium composite cored wire and the application thereof. The powdery raw materials of the boron-iron and iron-titanium composite cored wire include boron iron and iron titanium, wherein the boron content of boron iron is not less than 9wt%, the titanium content of iron titanium is not less than 25wt%, and the mixing ratio of boron iron to iron titanium depends on the actual needs. The boron-iron and iron-titanium composite cored wire is manufactured by adding boron iron and iron titanium to molten steel at the same time, thereby simplifying thealloying operation in boron steel smelting and stabilizing the control of boron content in steel. Compared with the prior boron iron cored wire, the boron-iron and iron-titanium composite cored wire has the advantages of low proportion of boron iron, small fluctuation of deviation of the addition amount of boron iron, less loss, adequate protection of each boron iron fine particle by titanium element ...

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Номер записи: 17
30-03-2011 дата публикации

Arc furnace steelmaking method

Номер: CN0101993972A
Автор: Wang Guanglian, Shen Jingxia, Sun Yongxi, Ma Zhuanqing, Li Meng, Yang Miping, Zhao Guanfu, Liu Jinling, Fan Xirong, Ni Youlai, Zhang Junping
Принадлежит:

The invention discloses an arc furnace steelmaking method, comprising the following steps: preparing raw materials from 30-70% of molten iron, 5-20% of high quality scrap steel, 20-45% of cheap scrap steel and 4-5% of other auxiliary materials based on weight percentage; and refining the raw materials into molten steel by an arc furnace. By the steelmaking method of the invention, electric energyconsumption can be reduced so as to lower the steelmaking cost.

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Номер записи: 18
09-09-2009 дата публикации

Method for preparing carbonaceous autoreduction cold pressing block and application thereof

Номер: CN0101525689A
Автор: GUANGLIAN WANG, JINGXIA SHEN, MENG LI, QINGLU QI, SHULIN SUN, YOULAI NI, LIHUA YE, YANLI ZHOU, ZHENG HAN, WANG GUANGLIAN, SHEN JINGXIA, LI MENG, QI QINGLU, SUN SHULIN, NI YOULAI, YE LIHUA, ZHOU YANLI, HAN ZHENG
Принадлежит:

The invention relates to a method for preparing a carbonaceous autoreduction cold pressing block by using electric stove dust-removing ash and iron scales and the application thereof. The carbonaceous autoreduction cold pressing block comprises the following raw materials by the weight percent: 40 to 50 of iron scale, 20 to 30 of electric stove dust-removing ash, 20 to 25 of carbon powder and 5 to 8 of bonding agent. The method for preparing the carbonaceous autoreduction cold pressing block comprises the following steps: the raw materials are evenly stirred in proportion and are pressed and molded by a double-roll block-press machine of 190 tons, and a mold is placed in dry environment of above 50 DEG C for 30 to 36 hours to form the high-strength carbonaceous cold pressing block which is directly used for electric stove steelmaking smelting. The method has simple technology, low energy consumption, high strength and no environmental pollution. When the carbonaceous autoreduction cold ...

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Номер записи: 19
03-03-2010 дата публикации

Electric furnace burden process with high efficiency and low cost

Номер: CN0101660019A
Автор: JINGXIA SHEN, MENG LI, CHUANQING MA, JINLING LIU, JIANLU LIU, XIRONG FAN, YONGXI SUN, MIPING YANG, GUANFU ZHAO, YOULAI NI, SHEN JINGXIA, LI MENG, MA CHUANQING, LIU JINLING, LIU JIANLU, FAN XIRONG, SUN YONGXI, YANG MIPING, ZHAO GUANFU, NI YOULAI
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The invention relates to an electric furnace burden process with high efficiency and low cost. Main raw materials are molten iron accounting for 30-60 percent of metal adding amount, excellent scrap steel accounting for 5-10 percent of metal adding amount and low-lost scrap steel accounting for 30-35 percent of metal adding amount; auxiliary materials are lime and soft burning dolomite, wherein 3.0-3.5 percent of lime and 1.0-1.5 percent of soft burning dolomite are respectively added in each ton of molten steel; and through optimizing electric furnace slag discharge operation, using an oxygenlance and adopting power supply oxygen blowing control and other smelting processes, the electric furnace burden process greatly improves simultaneous hit rate of terminal point components and the temperature of an electric arc furnace, realizes the aims of improving the quality of the molten steel, shortening the smelting period and reducing the consumption and significantly reduces the full oxygen ...

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Номер записи: 20
23-05-2012 дата публикации

Cogged ingot continuous casting crystallizer protecting slag and preparation method thereof

Номер: CN0101502871B
Автор: ZHANG PENG, LIANG JIANGUO, DIAO FENG, HE QINGWEN, WANG GUANGLIAN, SHEN JINGXIA, LI MENG, PENG ZHANG, JIANGUO LIANG, FENG DIAO, QINGWEN HE, GUANGLIAN WANG, JINGXIA SHEN, MENG LI
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The invention relates to a cogged ingot continuous casting mold powder, belonging to the iron and steel smelting technical field. The mold powder comprises the following chemical components with the weight percent of 30-35 percent of SiO2, 25-30 percent of CaO, 2.5-3.5 percent of MgO, 1.5-2.5 percent of Fe2O3, 3.5-4.5 percent of Al2O3, 4.5-5.5 percent of NaF2+CaF2, 5.5-6.5 percent of Na2O+K2O, 11-14.5 percent of solid carbon, and the rest is binder used for pelleting and water. A preparation method of the mold powder is also provided by the invention. The mold powder is exclusively applied to the cogged ingot continuous casting mold powder, in particular to cogged ingot 27SiMn continuous casting mold. The zero defect production of continuous casting can be realized, the hot delivery and hot charging of the continuous casting can be guaranteed, the systematic energy consumption from the continuous casting to rolled products can be lowered, the production cycle from the continuous casting ...

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Номер записи: 21
04-08-2010 дата публикации

Hot-rolled round steel for high carbon manganese and chrome grinding ball and method for producing same

Номер: CN0101792885A
Автор: KUANJUN FANG, WENYING GE, AIFENG LU, DONG LU, BINGTAO MA, DONG QIN, JINGXIA SHEN, FENGJUN SUN, XIKUN XU, ZHENGLONG ZHAI, FANG KUANJUN, GE WENYING, LU AIFENG, LU DONG, MA BINGTAO, QIN DONG, SHEN JINGXIA, SUN FENGJUN, XU XIKUN, ZHAI ZHENGLONG
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The invention relates to hot-rolled round steel for high carbon manganese and chrome grinding ball and a method for producing the same. The hot-rolled round steel comprises the following components by weight percent: 0.75-0.85 percent of C, 0.17-0.35 percent of Si, 0.70-0.90 percent of Mn, 0.40-0.60 percent of Cr, 0.001-0.020 percent of S, 0.01-0.20 percent of Cu, 0.01-0.20 percent of Ni, 0.010-0.060 percent of Al, 0.005-0.025 percent of P and the balance of Fe and inevitable impurities. The method for producing the hot-rolled round steel comprises the steps of smelting, alloying, casting and rolling. The end-point furnace-smelting C is controlled to be 0.4 percent or higher and the end-point furnace-smelting P is controlled to be 0.015 percent or lower; the steel is tapped when the temperature of the molten steel reaches 1630-1670 DEG C; the steel billet is cast continuously; the temperature of the molten steel in a continuously cast tundish is controlled at 1480-1495 DEG C; the continuous ...

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Номер записи: 22
24-02-2010 дата публикации

Electric furnace continuous casting short process production method of oil well pipe billets

Номер: CN0101653822A
Автор: GUANGLIAN WANG, QINGWEN HE, JINGXIA SHEN, XUJIANG FANG, MENG LI, CHENGJIE MAO, JIANGUO LIANG, WANG GUANGLIAN, HE QINGWEN, SHEN JINGXIA, FANG XUJIANG, LI MENG, MAO CHENGJIE, LIANG JIANGUO
Принадлежит:

The invention relates to an electric furnace continuous casting short process production method of oil well pipe billets and the method comprises electric arc furnace smelting, LF external refining, VD vacuum treating, full protection pouring and continuous casting of round tube billet and tube rolling; a conticaster for both square and round billets is used, when producing square or round billets, only the crystallizer assembly and nozzles in second cooling zone first section, second cooling zone second section and second cooling zone third section are needed to change, in the crystallizer assembly, the conical degree of the crystallizer copper tube is parabolic shape, and the crystallizer adopts hydraulic non-sinusoidal oscillation, wherein the amplitude is 0+/-5mm, the vibration frequency is 40-360 times/min and the maximum skewness of non-sinusoidal wave is 40%. The method of the invention can realize the electric furnace continuous casting short process production method of zero defect ...

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Номер записи: 23
16-02-2011 дата публикации

45BM steel for caterpillar track pin roll and manufacturing method thereof

Номер: CN0101624675B
Автор: ZHENGLONG ZHAI, WENYING GE, XIKUN XU, JINGXIA SHEN, YECAI LI, DONG LU, ZUOCANG MA, ZHENMING SHI, BINGTAO MA, ZHAI ZHENGLONG, GE WENYING, XU XIKUN, SHEN JINGXIA, LI YECAI, LU DONG, MA ZUOCANG, SHI ZHENMING, MA BINGTAO
Принадлежит:

The invention discloses a 45BM steel for a caterpillar track pin roll, comprising the components by weight percent: 0.43-0.47% of C, 0.17-0.35% of Si, 0.60-0.80% of Mn, 0.005-0.025% of P, 0.001-0.020% of S, 0.01-0.20% of Cr, 0.01-0.20% of Ni, 0.01-0.20% of Cu, 0.0005-0.0030% of B, 0.020-0.060% of Ti, 0.01-0.06% of Al and the rest of Fe and unavoidable impurities. A manufacturing method of the 45BM steel comprises: electric furnace smelting, steel tapping, LF external refining and vacuum degassing (VD) treatment. The reduced molten steel is added with aluminium for finally deoxidization, titanium for nitrogen fixation and ferroboron for alloying after the VD treatment; casting blank is poured by continuous casting; the superheat temperature is 20-30 DEG C, the continuous casting speed is 0.9-1.20m/min, the uniform heating temperature of billet steel in a heating furnace is 1180-1220 DEG C, the heating time is 2.5-3h, the initial rolling temperature is 1100-1150 DEG C, and the final rolling ...

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Номер записи: 24
04-08-2010 дата публикации

Medium-carbon multi-alloying wear-resistant hot rolling round steel and production method thereof

Номер: CN0101792889A
Автор: KUANJUN FANG, WENYING GE, AIFENG LU, DONG QIN, JINGXIA SHEN, XUELI WANG, XIKUN XU, ZHENGLONG ZHAI, YANLI ZHOU, HUI ZHUANG, FANG KUANJUN, GE WENYING, LU AIFENG, QIN DONG, SHEN JINGXIA, WANG XUELI, XU XIKUN, ZHAI ZHENGLONG, ZHOU YANLI, ZHUANG HUI
Принадлежит:

The invention relates to a medium-carbon multi-alloying wear-resistant hot rolling round steel and a production method thereof, wherein the steel comprises the following compositions in percentage by weight: 0.55-0.65% of C, 0.20-0.37% of Si, 0.75-0.90% of Mn, 0.85-1.20% of Cr, 0.03-0.20% of V, 0.05-0.20% of Mo, 0.010-0.060% of Ti, 0.005-0.025% of P, 0.001-0.020% of S, 0.01-0.20% of Cu, 0.01-0.20 of Ni, 0.010-0.060% of Al, the balance of Fe and unavoidable impurities. When manufacturing, the smelting end point of an electric furnace satisfies the relations that C is more than or equal to 0.30% and P is less than or equal to 0.015%, and tapping is carried out when the temperature of molten steel reaches 1630-1670 DEG C; LF external refining adopts continuous casting, pouring and billet casting, the temperature of the molten steel of a continuous casting tundish is controlled within 1500-1520 DEG C, the continuous casting speed is controlled within 0.55-0.75m/min, the soaking temperature ...

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Номер записи: 25
04-04-2012 дата публикации

Continuous casting tundish hollow particle carbon-free covering agent and preparation method thereof

Номер: CN0101653819B
Автор: HE QINGWEN, PENG BAIQUAN, WANG GUANGLIAN, SHEN JINGXIA, ZHAO WEICHENG, FANG XUJIANG, LIANG JIANGUO, MAO CHENGJIE, DIAO FENG, QINGWEN HE, BAIQUAN PENG, GUANGLIAN WANG, JINGXIA SHEN, WEICHENG ZHAO, XUJIANG FANG, JIANGUO LIANG, CHENGJIE MAO, FENG DIAO
Принадлежит:

The invention relates to a continuous casting tundish hollow particle carbon-free covering agent, belonging to the iron and steel smelting field. The carbon-free covering agent comprises the following components by weight percent: 25-35% of SiO2, 8-20% of Al2O3, less than 1.5% of Fe2O3, 25-35% of CaO, 8-16% of MgO and less than 0.5% of H2O, wherein 0.15-1.0mm of particles account for 90-100% and the bulk specific weight is 0.6-0.9g/cm<3>. The continuous casting tundish hollow particle carbon-free covering agent has good spreadability, when added the covering agent can be molten fast and can cover the whole surface of molten steel, thus avoiding the secondary oxidation of molten steel; the covering agent has function of absorbing inclusion, can purify molten steel and increase the casting blank quality; the covering agent has good thermal insulation property, thus significantly reducing the temperature loss of molten steel; the slag of the covering agent can not incrust and stick to the ...

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Номер записи: 26
13-01-2010 дата публикации

45BM steel for caterpillar track pin roll and manufacturing method thereof

Номер: CN0101624675A
Автор: ZHENGLONG ZHAI, WENYING GE, XIKUN XU, JINGXIA SHEN, YECAI LI, DONG LU, ZUOCANG MA, ZHENMING SHI, BINGTAO MA, ZHAI ZHENGLONG, GE WENYING, XU XIKUN, SHEN JINGXIA, LI YECAI, LU DONG, MA ZUOCANG, SHI ZHENMING, MA BINGTAO
Принадлежит:

The invention discloses a 45BM steel for a caterpillar track pin roll, comprising the components by weight percent: 0.43-0.47% of C, 0.17-0.35% of Si, 0.60-0.80% of Mn, 0.005-0.025% of P, 0.001-0.020% of S, 0.01-0.20% of Cr, 0.01-0.20% of Ni, 0.01-0.20% of Cu, 0.0005-0.0030% of B, 0.020-0.060% of Ti, 0.01-0.06% of Al and the rest of Fe and unavoidable impurities. A manufacturing method of the 45BM steel comprises: electric furnace smelting, steel tapping, LF external refining and vacuum degassing (VD) treatment. The reduced molten steel is added with aluminium for finally deoxidization, titanium for nitrogen fixation and ferroboron for alloying after the VD treatment; casting blank is poured by continuous casting; the superheat temperature is 20-30 DEG C, the continuous casting speed is 0.9-1.20m/min, the uniform heating temperature of billet steel in a heating furnace is 1180-1220 DEG C, the heating time is 2.5-3h, the initial rolling temperature is 1100-1150 DEG C, and the final rolling ...

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Номер записи: 27
27-08-2008 дата публикации

Method for improving and stabilising boron recovery rate for vacuum smelting steel containing boron

Номер: CN0101250659A
Автор: SUN YONGXI, WANG XUELI, WANG GUANGLIAN, SHEN JINGXIA, LI MENG, ZHAI ZHENGLONG, MENG XIANHUA, YONGXI SUN, XUELI WANG, GUANGLIAN WANG, JINGXIA SHEN, MENG LI, ZHENGLONG ZHAI, XIANHUA MENG
Принадлежит:

The invention belongs to the iron and steel smelting field, which particularly relates to a method for smelting boron steel in vacuum and improving and stabilizing boron recovery ratio. The invention is characterized in that the method comprises the following steps: alloying boron before molten water vacuum disposal, getting molten water sample to analyze after processing molten water in vacuum, wherein boron recovery ratio is stabilized over 90%, achieving the purpose of producing a same boron containing steel grade, wherein the content deviation of smelting component boron among furnaces is less than 2ppm(namely 0.0002%). And the problems of unstable boron recovery ratio after molten water is processed in vacuum to alloy boron and secondary pollution to molten water which is caused in the process of alloying boron.

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Номер записи: 28
03-09-2008 дата публикации

Production method of low-Ti pinion steel

Номер: CN0101255531A
Автор: DONG JIEJI, ZHANG LIPING, DU XIANBIN, SHEN JINGXIA, XU RONGCHANG, LI MENG, ZHAI ZHENGLONG, ZHANG HAIXIA, SUN JIN, YAN ZHIHUA, ZHANG WEI, JIEJI DONG, LIPING ZHANG, XIANBIN DU, JINGXIA SHEN, RONGCHANG XU, MENG LI, ZHENGLONG ZHAI, HAIXIA ZHANG, JIN SUN, ZHIHUA YAN, WEI ZHANG
Принадлежит:

The invention relates to a low-Ti pinion steel in metallurgy industry and the production method thereof. The low-Ti pinion steel is composed of 0.17% to 0.23% by weight percentage of C, 0.17% to 0.37% by weight percentage of Si, 0.8% to 1.15% by weight percentage of Mn, no more than 0.035% by weight percentage of S, 0.035% by weight percentage of P, 1.0% to 1.35% by weight percentage of Cr, 0.01% to 0.038% by weight percentage of Ti, no more than 20PPM of O, no less than 30PPM and no more than 120PPM of N, and the balance Fe and unavoidable impurity. The production method comprises the steps of initial melting with an electric furnace or converter, LF refining, processing refining steel liquid by a vacuum furnace, full protection continuous casting and roll forming. The CrMnTi pinion steel produced by the invention has high purity, Ti content in the steel is controlled between 0.01% to 0.038%, so that grains are prevented from growing under carburizing temperature, doping is reduced, and ...

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Номер записи: 29
01-12-2010 дата публикации

Method for preparing carbonaceous autoreduction cold pressing block and application thereof

Номер: CN0101525689B
Автор: LIHUA YE, YOULAI NI, QINGLU QI, SHULIN SUN, MENG LI, YANLI ZHOU, ZHENG HAN, JINGXIA SHEN, GUANGLIAN WANG, YE LIHUA, NI YOULAI, QI QINGLU, SUN SHULIN, LI MENG, ZHOU YANLI, HAN ZHENG, SHEN JINGXIA, WANG GUANGLIAN
Принадлежит:

The invention relates to a method for preparing a carbonaceous autoreduction cold pressing block by using electric stove dust-removing ash and iron scales and the application thereof. The carbonaceous autoreduction cold pressing block comprises the following raw materials by the weight percent: 40 to 50 of iron scale, 20 to 30 of electric stove dust-removing ash, 20 to 25 of carbon powder and 5 to 8 of bonding agent. The method for preparing the carbonaceous autoreduction cold pressing block comprises the following steps: the raw materials are evenly stirred in proportion and are pressed and molded by a double-roll block-press machine of 190 tons, and a mold is placed in dry environment of above 50 DEG C for 30 to 36 hours to form the high-strength carbonaceous cold pressing block which is directly used for electric stove steelmaking smelting. The method has simple technology, low energy consumption, high strength and no environmental pollution. When the carbonaceous autoreduction cold ...

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Номер записи: 30