发明名称 |
CONTINUOUS CASTING PROCESS FOR PRODUCING LOW CARBON STEEL STRIPS AND STRIPS SO OBTAINABLE WITH GOOD AS CAST MECHANICAL PROPERTIES |
摘要 |
A process for the production of low carbon steel strips having a good combination of strength an formability, as cast, and a good weldability after the pickling by usual processes, comprising the following steps: casting, in a twin rolls continuous casting machine (1) comprising pinch rolls (3), a strip with a thickness comprised between 1 and 8 mm, having the following composition as weight percentage of the total weight: C 0.02-0.10; Mn 0.1-0.6; Si 0.02-0.35; Al 0.01-0.05; S<0.015; P<0.02; Cr 0.05-0.35; Ni 0.05-0.3; N 0.003-0.012; and, optionally, Ti<0.03; V<0.10; Nb<0.035, the remaining part being substantially Fe; cooling the strip in the area comprised between the casting-rolls and the pinch rolls (3); hot deforming the strip cast through said pinch rolls (3) at a temperature comprised between 1000 and 1300 DEG C until reaching a thickness reduction less than 15 %, in order to encourage the closing of the shrinkage porosities; cooling the strip at a speed comprised between 5 and 80 DEG C/s down to a temperature (Tavv) comprised between 500 and 850 DEG C; and coiling into a reel (5) the so obtainable strip. |
申请公布号 |
WO9857767(A1) |
申请公布日期 |
1998.12.23 |
申请号 |
WO1998IT00168 |
申请日期 |
1998.06.19 |
申请人 |
ACCIAI SPECIALI TERNI S.P.A.;VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH;MASCANZONI, ANTONIO;ANELLI, ETTORE |
发明人 |
MASCANZONI, ANTONIO;ANELLI, ETTORE |
分类号 |
B22D11/00;B22D11/06;B22D11/124;B22D11/128 |
主分类号 |
B22D11/00 |
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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