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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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Применить Всего найдено 6. Отображено 6.
11-02-2009 дата публикации

Control method of natural roll-gap thermal-contraction technique based on bloom

Номер: CN0101362196A
Автор: YONG CHEN, MIAOYONG ZHU, SUBO YANG, CHENG JI, XUEQIAN CAO, GUORONG WU, JIANHUA ZENG, CHEN YONG, ZHU MIAOYONG, YANG SUBO, JI CHENG, CAO XUEQIAN, WU GUORONG, ZENG JIANHUA
Принадлежит:

The invention discloses a billet continuous casting roll gap technology in metallurgical production and more particularly relates to a control method based on the technology of bloom natural thermal contraction roll gaps. The control process provided by the invention for controlling the roll gaps by the thermal contraction values of casting billets includes the following steps of: (1) the calculation of real-time temperature fields: building a solidification and heat transfer model of casting billets to obtain temperature fields of different times; (2) thermal coupling calculation: obtaining the natural thermal contraction values of casting billets in the direction of the casting billets at different times according to corresponding calculated temperature fields and strain distribution of the casting billets; (3) calculation verification and field feedback: comparing with the actual situations of fields according to results calculated by simulation; and (4) the determination of the system ...

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Номер записи: 1
24-08-2011 дата публикации

Method for distributing and controlling tension leveler torque in bloom continuous casting dynamic soft reduction process

Номер: CN0101648264B
Автор: JI CHENG, HU LINING, HOU YUEHUA, LI YAKE, ZHONG BAOJUN, ZHU MIAOYONG, ZHANG ZHIGUANG, LIU JINGJUN, ZHAO ZHONGYI, ZHAO HECHAO, WANG ZHENSHAN, LIU XIAOSAN, CAO XUEQIAN, CAO LEI, CHENG JI, LINING HU, YUEHUA HOU, YAKE LI, BAOJUN ZHONG, MIAOYONG ZHU, ZHIGUANG ZHANG, JINGJUN LIU, ZHONGYI ZHAO, HECHAO ZHAO, ZHENSHAN WANG, XIAOSAN LIU, XUEQIAN CAO, LEI CAO
Принадлежит:

The invention relates to a method for distributing and controlling tension leveler torque in a bloom continuous casting dynamic soft reduction process, belonging to the technical field of metallurgy continuous casting and used for solving the problem of uneven torque distribution of a tension leveler when the tension leveler implements dynamic soft reduction. The invention adopts the technical scheme of selecting measuring rollers; calculating a set value of torque of each drive roller; and comparing a set value with an actual measured value of the torque of each drive roller, and carrying out casting speed regulation. The three steps are continuously carried out in a circulating way to realize torque dynamic distribution. The method distributes the torque in the soft reduction process ofa continuous casting machine by dynamically regulating casting speed thereof according to the torque of each drive roller, thereby realizing tension operation of a casting billet in the tension leveler ...

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Номер записи: 2
20-04-2011 дата публикации

Control method of natural roll-gap thermal-contraction technique based on bloom

Номер: CN0101362196B
Автор: YANG SUBO, CHEN YONG, JI CHENG, CAO XUEQIAN, WU GUORONG, ZENG JIANHUA, ZHU MIAOYONG, SUBO YANG, YONG CHEN, CHENG JI, XUEQIAN CAO, GUORONG WU, JIANHUA ZENG, MIAOYONG ZHU
Принадлежит:

The invention discloses a billet continuous casting roll gap technology in metallurgical production and more particularly relates to a control method based on the technology of bloom natural thermal contraction roll gaps. The control process provided by the invention for controlling the roll gaps by the thermal contraction values of casting billets includes the following steps of: (1) the calculation of real-time temperature fields: building a solidification and heat transfer model of casting billets to obtain temperature fields of different times; (2) thermal coupling calculation: obtaining the natural thermal contraction values of casting billets in the direction of the casting billets at different times according to corresponding calculated temperature fields and strain distribution ofthe casting billets; (3) calculation verification and field feedback: comparing with the actual situations of fields according to results calculated by simulation; and (4) the determination of the system ...

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Номер записи: 3
26-01-2011 дата публикации

Method for controlling online calibration of pulling-straightening roller gap under light pressure of bloom caster

Номер: CN0101554650B
Автор: JI CHENG, ZHU MIAOYONG, CAO XUEQIAN, CHENG JI, MIAOYONG ZHU, XUEQIAN CAO
Принадлежит:

A method for controlling the online calibration of a pulling-straightening roller gap under the light pressure of a bloom caster belongs to the process field of the bloom caster under the light pressure in steel production. The method comprises the following steps of: (1) determining the object pulling rate v0 of the online calibration roll gap; (2) recording the roll gap value and the number of instantaneous roll gaps; (3) calculating the average value Si of each roll gap and the difference Di between the average value Si and the average S1 of a No. 1 roll gap; (4) calibrating the roll gap and implementation calibration on each pulling-straightening roller according to the roll gap Di from step (3), with the roll gap value of a pulling-straightening roller equal to the roll gap value of No. 1 roller plus Di. The online roll gap calibration method can calibrate the roll gap when in pouring for each time, can ensure the accurate implementation of the proposal under presupposition pressure ...

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Номер записи: 4
17-02-2010 дата публикации

Method for distributing and controlling tension leveler torque in bloom continuous casting dynamic soft reduction process

Номер: CN0101648264A
Автор: JI CHENG, HU LINING, HOU YUEHUA, LI YAKE, ZHONG BAOJUN, ZHU MIAOYONG, ZHANG ZHIGUANG, LIU JINGJUN, ZHAO ZHONGYI, ZHAO HECHAO, WANG ZHENSHAN, LIU XIAOSAN, CAO XUEQIAN, CAO LEI, CHENG JI, LINING HU, YUEHUA HOU, YAKE LI, BAOJUN ZHONG, MIAOYONG ZHU, ZHIGUANG ZHANG, JINGJUN LIU, ZHONGYI ZHAO, HECHAO ZHAO, ZHENSHAN WANG, XIAOSAN LIU, XUEQIAN CAO, LEI CAO
Принадлежит:

The invention relates to a method for distributing and controlling tension leveler torque in a bloom continuous casting dynamic soft reduction process, belonging to the technical field of metallurgy continuous casting and used for solving the problem of uneven torque distribution of a tension leveler when the tension leveler implements dynamic soft reduction. The invention adopts the technical scheme of selecting measuring rollers; calculating a set value of torque of each drive roller; and comparing a set value with an actual measured value of the torque of each drive roller, and carrying outcasting speed regulation. The three steps are continuously carried out in a circulating way to realize torque dynamic distribution. The method distributes the torque in the soft reduction process ofa continuous casting machine by dynamically regulating casting speed thereof according to the torque of each drive roller, thereby realizing tension operation of a casting billet in the tension leveler and ...

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Номер записи: 5
14-10-2009 дата публикации

Method for controlling online calibration of pulling-straightening roller gap under light pressure of bloom caster

Номер: CN0101554650A
Автор: JI CHENG, ZHU MIAOYONG, CAO XUEQIAN, CHENG JI, MIAOYONG ZHU, XUEQIAN CAO
Принадлежит:

A method for controlling the online calibration of a pulling-straightening roller gap under the light pressure of a bloom caster belongs to the process field of the bloom caster under the light pressure in steel production. The method comprises the following steps of: (1) determining the object pulling rate v0 of the online calibration roll gap; (2) recording the roll gap value and the number of instantaneous roll gaps; (3) calculating the average value Si of each roll gap and the difference Di between the average value Si and the average S1 of a No. 1 roll gap; (4) calibrating the roll gap and implementation calibration on each pulling-straightening roller according to the roll gap Di from step (3), with the roll gap value of a pulling-straightening roller equal to the roll gap value of No. 1 roller plus Di. The online roll gap calibration method can calibrate the roll gap when in pouring for each time, can ensure the accurate implementation of the proposal under presupposition pressure ...

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Номер записи: 6