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1.发明授权Method for producing ferritic stainless steel sheets or strips containing aluminum 失效制造含有铝的铁素体不锈钢板或带材的方法
公开(公告)号：US4515644A
公开(公告)日：1985-05-07
申请号：US312848
申请日：1981-10-19
CPC分类号： C21D8/0405
摘要： The ferritic stainless steel sheet involves a problem that the ridging is likely to generate at the forming step, such as the deep drawing step. The ridging is believed to be caused by a band structure in the hot rolled band, which structure exerting an influence on the formability of a cold rolled sheet. The ridging is prevented in the present invention by means of the combination of the three technical measures: incorporating aluminum into a ferritic stainless steel; heating a slab to a low temperature of 1200.degree. C. or less; and, carrying out a drastic hot rolling of at least one pass with the draft of 20%/pass or more. As a result of these technical measures, the structure of a hot rolled band is made and uniform and thus both the formability and anti-ridging property are enhanced.
摘要翻译： 铁素体系不锈钢板存在在深冲压成形工序中可能产生隆起的问题。 据信这种皱纹是由热轧带中的带状结构引起的，该结构对冷轧板的成形性产生影响。 在本发明中通过三种技术措施的结合防止了脊部：将铝结合到铁素体不锈钢中; 将板坯加热到1200℃以下的低温; 并且进行至少一次通过的剧烈热轧，其中通过量为20％/通过以上。 作为这些技术措施的结果，制成热轧带的结构并且均匀，从而增强了成形性和抗皱纹性。
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2.发明授权Process for the production of ferritic stainless steel sheets or strips and products produced by said process 失效用于生产铁素体不锈钢板或带材的方法和由所述方法生产的产品
公开(公告)号：US4373971A
公开(公告)日：1983-02-15
申请号：US222762
申请日：1981-01-06
CPC分类号： C22C38/18 , C21D8/0205
摘要： In a process for the production of cold rolled ferritic stainless steel sheets or strips, a hot rolled strips has been annealed by a long time batchwise annealing and cold rolling and recrystallization annealing have been repeated usually twice. In the present invention, a hot rolled steel strip of an Al-containing ferritic stainless steel is heated by continuous annealing to a temperature of from 850.degree. to 1100.degree. C., AlN (aluminum nitride) is precipitated in the dispersed state and then cooling the strip to a temperature of 700.degree. to 900.degree. C., performing subsequent cooling to a level not higher than 200.degree. C. at such a cooling rate that a chromium depletion layer, which causes a gold dust defect, is not formed around the chromium carbonitride. Single cold rolling and recrystallization annealing are carried out in combination until the thickness is reduced to the gauge thickness.
摘要翻译： 在制造冷轧铁素体不锈钢板或带材的方法中，通过长时间间歇退火退火热轧带材，冷轧和重结晶退火通常重复两次。 在本发明中，通过连续退火将含Al铁素体系不锈钢的热轧钢带加热至850〜1100℃的温度，在分散状态下析出AlN（氮化铝），然后冷却 将该条带放置在700℃至900℃的温度下，以这样的冷却速度进行随后的冷却至不高于200℃的水平，使得在其周围不形成导致金粉尘缺陷的铬耗尽层 碳氮化铬。 进行单次冷轧和再结晶退火，直到厚度减小到规格厚度。
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公开(公告)号：US4465525A
公开(公告)日：1984-08-14
申请号：US453954
申请日：1982-12-28
CPC分类号： C22C38/32
摘要： A ferritic stainless steel having excellent formability, for example, in a deep drawing procedure, contains 0.04 to 0.1 weight % of C, 1.0 weight % or less of Si, 0.75 weight % or less of Mn, 10 to 30 weight % of Cr, 0.5 weight % or less of Ni, 0.025 weight % or les of N, 2 to 30 ppm of boron, and optionally, 0.005 to 0.4 weight % of an additional alloy component consisting of Al and, further optionally, a further additional alloy component consisting of at least one member selected from 0.005 to 0.6 weight % of Ti, 0.005 to 0.4 weight % of Nb, V, and Zr, 0.02 to 0.50 weight % of Cu, and 0.05 weight % or less of Ca and Ce, the sum of the contents of C and N being 0.0502 weight % or more.
摘要翻译： 具有优异成型性的铁素体不锈钢例如在深拉伸工序中，含有C：0.04〜0.1重量％，Si：1.0重量％以下，Mn：0.75重量％以下，Cr：10〜30重量％ 0.5重量％以下的Ni，0.025重量％的N，2〜30ppm的硼，以及任选的0.005〜0.4重量％的由Al构成的附加合金成分，以及进一步任选的另外的附加合金成分， 的选自0.005〜0.6重量％的Ti，0.005〜0.4重量％的Nb，V，Zr，0.02〜0.50重量％的Cu和0.05重量％以下的Ca和Ce的总和， C和N的含量为0.0502重量％以上。
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