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1. 发明授权

US06290787B1 Process for manufacturing drawable sheet by direct casting of thin strip, and sheet thus obtained 有权
标题翻译：通过直接铸造薄带来制造可拉伸片材的方法，以及由此获得的片材
公开(公告)号：US06290787B1
公开(公告)日：2001-09-18
申请号：US09597407
申请日：2000-06-19
申请人： Michel Babbit , Michel Faral , Catherine Juckum , Hélène Regle
发明人： Michel Babbit , Michel Faral , Catherine Juckum , Hélène Regle
IPC分类号： C21D802
CPC分类号： C22C38/04 , C21D8/0415 , C21D8/0426 , C21D8/0436 , C21D8/0463 , C22C38/004 , C23C2/02
摘要： The subject for the invention is a process for manufacturing strip. The process includes casting directly from liquid metal a steel strip 1.5 to 10 mm in thickness, subjecting the cast steel strip, in the austenitic phase, to a first hot rolling operation in one or more steps at a temperature of between 950° C. and the Ar3 temperature of said strip with an overall reduction ratio of at least 10%, then subjecting the hot rolled strip, in the ferritic phase, to a second hot rolling operation in one or more steps at a temperature below 850° C., with an overall reduction ratio of at least 50% in the presence of a lubricant, so as to obtain a hot-rolled sheet with a thickness of less than or equal to 2 mm, and recrystallizing the hot rolled sheet at a temperature between 700 and 800° C. The composition of the steel strip comprises (in weight %): carbon less than 0.1%, manganese from 0.03 to 2%, silicon from 0 to 0.5%, phosphorus from 0 to 0.1%, boron from 0 to 0.002%, titanium from 0 to 0.15%, balance iron and impurities.
摘要翻译：本发明的主题是制造带材的方法。该方法包括直接从液态金属浇铸厚度为1.5至10mm的钢带，将奥氏体相中的铸钢带在950℃至950℃的温度下以一个或多个步骤进行第一次热轧操作，所述条带的Ar 3温度总体减小率至少为10％，然后在低于850℃的温度下，在一个或多个步骤中对铁素体相中的热轧带材进行第二次热轧操作，在润滑剂的存在下的总减速比为至少50％，以获得厚度小于或等于2mm的热轧板，并且在700-800℃的温度下对热轧板进行再结晶钢带的组成包括（重量％）：小于0.1％的碳，0.03％至2％的锰，0至0.5％的硅，0至0.1％的磷，0至0.002％的硼，钛0〜0.15％，铁和杂质平衡。

2. 发明授权

US06328826B1 Method of fabricating “TRIP” steel in the form of thin strip, and thin strip obtained in this way 失效
标题翻译：以薄带形式制造“TRIP”钢的方法，以这种方式获得的薄带
公开(公告)号：US06328826B1
公开(公告)日：2001-12-11
申请号：US09621089
申请日：2000-07-21
申请人： Thierry Iung , Odile Faral , Michel Faral , Michel Babbit , Christophe Issartel
发明人： Thierry Iung , Odile Faral , Michel Faral , Michel Babbit , Christophe Issartel
IPC分类号： C21D800
CPC分类号： C21D8/0215 , C21D1/20 , C21D8/0226 , C21D2211/001 , C21D2211/002
摘要： The invention provides a method of fabricating “TRIP” steel in the form of thin strip, wherein: a strip from 1.5 to 10 mm thick, preferably from 1 to 5 mm thick, is cast directly from liquid steel having the composition (in weight percent) C % from 0.05 to 0.25, (Mn+Cu+Ni) % from 0.5 to 3, (Si+Al) % from 0.1 to 4, (P+Sn+As+Sb) % not greater than 0.1, (Ti+Nb+V+Zr+rare earths) % less than 0.3, Cr % less than 1, Mo % less than 1, V % less than 1, the remainder being iron and manufacturing impurities; said strip is hot rolled on-line in one or more passes at a temperature higher than the Ar3 temperature of said steel and with a reduction ratio from 25 to 70%; first forced cooling of said strip is carried out at a cooling rate from 5 to 100° C./s; the strip remains at temperatures from 550 to 400° C. for the time needed for bainitic transformation to occur therein with a residual austenite content greater than 5%, while preventing the formation of perlite, after which the transformation is interrupted by second forced cooling of said strip to a temperature below 400° C.; and said strip is coiled at a temperature below 350° C.
摘要翻译：本发明提供一种以薄带形式制造“TRIP”钢的方法，其中：从1.5至10mm厚，优选1至5mm厚的条直接从具有组成（以重量百分比计））C％为0.05〜0.25，（Mn + Cu + Ni）％为0.5〜3，（Si + Al）％为0.1〜4，（P + Sn + As + Sb）％为0.1以下，（Ti + Nb + V + Zr +稀土）％小于0.3，Cr％小于1，Mo％小于1，V％小于1，余量为铁和制造杂质;所述条在一起热轧在一起或更高的温度在高于所述钢的Ar 3温度的温度下进行，并且压缩比为25至70％;所述条的首先强制冷却以5至100℃/ s的冷却速率进行在550至400℃的温度下保持贝氏体转变所需的时间，残余奥氏体含量大于5％，同时防止珍珠岩的形成，之后转变为通过将所述条的第二次强制冷却至低于400℃的温度来破坏; 在350度以下的温度下盘卷

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