发明名称 |
СПОСОБ ПРОИЗВОДСТВА ХОЛОДНОКАТАНОЙ ПОЛОСЫ ИЗ МАЛОУГЛЕРОДИСТОЙ СТАЛИ |
摘要 |
FIELD: metallurgy; production of cold-rolled strips made from low-carbon nonaging steel stabilized with aluminum which possesses high drawing properties for cold stamping of car parts. ^ SUBSTANCE: strip rolls are subjected to re-crystallization annealing by heating them first to intermediate temperature at rate of 60-160°C/h; then they are heated at rate of 7-9°C/h to temperature of 570-630°C; final heating is carried out at rate of 30-50°C/h; holding time at annealing temperature ranges from 12 to 18 h. Then, rolls are cooled to temperature of 680-695°C at rate of 10-50°C/h and cooling procedure is completed at arbitrary rate; cold rolling which is previous relative to annealing is performed at total cogging of 70-86%. Besides that, low-carbon steel has the following chemical composition, mass-%: 0.020-0.050 of C; 0.08-0.28 of Mn; Si£0.020; 0.01-0.06 of Al; N£0.01; the remainder being Fe and unavoidable admixtures. ^ EFFECT: improved quality of good-to-bad yield of cold-rolled strips. ^ 4 cl, 4 tbl, 1 ex |
申请公布号 |
RU2005130549(A) |
申请公布日期 |
2007.04.10 |
申请号 |
RU20050130549 |
申请日期 |
2005.10.03 |
申请人 |
Открытое акционерное общество "Северсталь" (RU) |
发明人 |
Немтинов Александр Анатольевич (RU);Ордин Владимир Георгиевич (RU);Л тин Андрей Борисович (RU);Скорохватов Николай Борисович (RU);Попов Евгений Сергеевич (RU);Степаненко Владислав Владимирович (RU);Павлов Сергей Игоревич (RU);Горелик Павел Борисович (RU);Зинченко Сергей Дмитриевич (RU);Росл кова Наталь Евгеньевна (RU);Трайно Александр Иванович (RU) |
分类号 |
C21D8/02 |
主分类号 |
C21D8/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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