发明名称 |
COIL ANNEALING METHOD IN HOOD FURNACE |
摘要 |
FIELD: heat treatment of ferrous and non-ferrous metals, possibly production of cold rolled strip steel for forming complex-configuration parts. ^ SUBSTANCE: method comprises steps of heating coils with rolling emulsion applied on strip surface till temperature 690 - 710°C; slowing temperature rise in temperature range that is by 50 -150°C lower than temperature of recrystallization starting of annealed metal in hydrogen medium at flow rate 3.5 - 4.5 m3/h; increasing flow rate by 6 - 7 times for period of slowing heating consisting of 0.17 -0.23 of heating period; cooling coils under heating hood after termination of their heating for time period consisting of 0.33 - 1.0 of slowing period of temperature rise at heating; then dismounting hood and cooling coils under muffle till temperature 130 - 150°C in zone of the most slow cooling of coil stack. ^ EFFECT: improved quality of products, increased yield of complex-elongation strip and strip with first group of surface finishing, energy saving. ^ 6 tbl, 1 dwg, 1 ex |
申请公布号 |
RU2293772(C1) |
申请公布日期 |
2007.02.20 |
申请号 |
RU20050120965 |
申请日期 |
2005.07.04 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "MAGNITOGORSKIJMETALLURGICHESKIJ KOMBINAT" |
发明人 |
TAKHAUTDINOV RAFKAT SPARTAKOVICH;SARYCHEV ALEKSANDR FEDOROVICH;MISHIN MIKHAIL PETROVICH;KUZNETSOV VLADIMIR GEORGIEVICH;ANTIPENKO ANATOLIJ IVANOVICH;MALOVA NINA IVANOVNA;GORBULIN VALENTIN NIKOLAEVICH |
分类号 |
C21D9/663;C21D1/26;C21D1/74 |
主分类号 |
C21D9/663 |
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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