发明名称 |
HOT ROLLED STEEL COILS PRODUCING METHOD |
摘要 |
FIELD: processes for making hot rolled wide strips of steels for rolling tubes. ^ SUBSTANCE: method is designed for hot rolling of wide strips having thickness 8 - 13 mm of steel kinds with carbon content no less than 11% of. Method comprises steps of heating slab for hot rolling; rolling it in rough and finish continuous groups of stands of wide strip rolling mill; differentiated cooling of strip with water from upwards and from downwards by means of sprinkling devices in outlet roller table for further coiling it; heating slab for hot rolling till temperature no more than 1220°C ; keeping temperature of rolling termination in rough group of stands no more than 1030°C; setting rate of rolling strip in first stand of finish group of stands no less than 0.7 m/s; setting total percentage reduction in finish group of stands no less than 70%; setting range of rolling process termination temperatures 840 -780°C; then performing differentiated cooling of rolled piece in outlet roller table while gradually increasing delay value from 14 s for strip with thickness 8 mm till 20 s for strip with thickness 13 mm; setting temperature of strip coiling no more than 610°C. ^ EFFECT: possibility for providing desired physical and mechanical properties hot rolled products of steels for rolling tube. ^ 1 ex |
申请公布号 |
RU2268793(C1) |
申请公布日期 |
2006.01.27 |
申请号 |
RU20040122329 |
申请日期 |
2004.07.20 |
申请人 |
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发明人 |
KUZNETSOV VLADIMIR GEORGIEVICH;SMIRNOV PAVEL NIKOLAEVICH;GOLUBCHIK EHDUARD MIKHAJLOVICH;DENISOV SERGEJ VLADIMIROVICH |
分类号 |
B21B1/26 |
主分类号 |
B21B1/26 |
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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