专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09038429B2 Method for manufacturing grain-oriented silicon steel with single cold rolling 有权
标题翻译：单次冷轧制造晶粒取向硅钢的方法
公开(公告)号：US09038429B2
公开(公告)日：2015-05-26
申请号：US13142955
申请日：2009-12-31
申请人： Guobao Li , Pijun Zhang , Yongjie Yang , Kanyi Shen , Zhuochao Hu , Peiwen Wu , Weizhong Jin , Quanli Jiang
发明人： Guobao Li , Pijun Zhang , Yongjie Yang , Kanyi Shen , Zhuochao Hu , Peiwen Wu , Weizhong Jin , Quanli Jiang
IPC分类号： C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/147 , B21B1/36 , B21B3/00 , B21B9/00 , C21D1/28
CPC分类号： C21D8/12 , B21B1/36 , B21B3/00 , B21B9/00 , C21D1/28 , C21D8/1233 , C21D8/1255 , C21D8/1272 , C21D8/1283 , C21D9/46 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/14775
摘要： The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [O] in the surface of the decarburized sheet: 171/t≦[O]≦313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing. The invention may control the primary recrystallization microstructure of steel sheet effectively by controlling the normalization process of hot rolled sheet to form sufficient favorable (Al, Si)N inclusions from nitrogen absorbed by slab during decarburizing annealing and low-temperature holding of high-temperature annealing, facilitating the generation of stable, perfect secondary recrystallization microstructure of the final products. In addition, the invention avoids the impact of nitridation using ammonia on the underlying layer in prior art, and thus the formation of a good glass film underlying layer is favored.
摘要翻译：本发明提供一种单次冷轧生产晶粒取向硅钢的方法，包括：1）熔炼，精炼和连续铸造得到铸坯; 2）热轧; 3）归一化，即归一化退火和冷却; 4）冷轧，即以75-92％的冷轧压下率进行单次冷轧; 5）在适当点为40-80℃的保护气氛中，在780-880℃下进行80-350秒的脱碳退火，其中脱碳片表面的总氧[O]为171 / t·nlE ; [O]＆nlE; 313 / t（t表示钢板的实际厚度，单位为mm），吸附氮量：2-10ppm; 6）高温退火，其中保护气氛的露点为0-50℃，第一阶段的保温时间为6-30h，高温退火时吸收的氮量为10-40 ppm; 7）热水平退火。本发明可以通过控制热轧板的归一化过程来控制钢板的一次再结晶微观结构，从而在脱碳退火和低温保持低温退火过程中形成足够的（Al，Si）N夹杂物，，促进了最终产品的稳定，完美的二次再结晶微观结构的产生。此外，本发明避免了使用氨氮在现有技术中对下层的影响，因此有利于形成良好的玻璃膜下层。

2. 发明申请

US20120000262A1 METHOD FOR MANUFACTURING GRAIN-ORIENTED SILICON STEEL WITH SINGLE COLD ROLLING 有权
标题翻译：用单辊冷轧制造面向导向的硅钢的方法
公开(公告)号：US20120000262A1
公开(公告)日：2012-01-05
申请号：US13142955
申请日：2009-12-31
申请人： Guobao Li , Pijun Zhang , Yongjie Yang , Kanyi Shen , Zhuochao Hu , Peiwen Wu , Weizhong Jin , Quanli Jiang
发明人： Guobao Li , Pijun Zhang , Yongjie Yang , Kanyi Shen , Zhuochao Hu , Peiwen Wu , Weizhong Jin , Quanli Jiang
IPC分类号： B21B27/06
CPC分类号： C21D8/12 , B21B1/36 , B21B3/00 , B21B9/00 , C21D1/28 , C21D8/1233 , C21D8/1255 , C21D8/1272 , C21D8/1283 , C21D9/46 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , H01F1/14775
摘要： The invention provides a method for producing grain-oriented silicon steel with single cold rolling, comprising: 1) smelting, refining and continuous casting to obtain a casting blank; 2) hot rolling; 3) normalization, i.e. normalizing annealing and cooling; 4) cold-rolling, i.e. single cold rolling at a cold rolling reduction rate of 75-92%; 5) decarburizing annealing at 780-880° C. for 80-350 s in a protective atmosphere having a due point of 40-80° C., wherein the total oxygen [0] in the surface of the decarburized sheet: 171/t≦[O]≦313/t (t represents the actual thickness of the steel sheet in mm), the amount of absorbed nitrogen: 2-10 ppm; 6) high temperature annealing, wherein the dew point of the protective atmosphere: 0-50° C., the temperature holding time at the first stage: 6-30 h, the amount of absorbed nitrogen during high-temperature annealing: 10-40 ppm; 7) hot-leveling annealing. The invention may control the primary recrystallization microstructure of steel sheet effectively by controlling the normalization process of hot rolled sheet to form sufficient favorable (Al, Si)N inclusions from nitrogen absorbed by slab during decarburizing annealing and low-temperature holding of high-temperature annealing, facilitating the generation of stable, perfect secondary recrystallization microstructure of the final products. In addition, the invention avoids the impact of nitridation using ammonia on the underlying layer in prior art, and thus the formation of a good glass film underlying layer is favored.
摘要翻译：本发明提供一种单次冷轧生产晶粒取向硅钢的方法，包括：1）熔炼，精炼和连续铸造得到铸坯; 2）热轧; 3）归一化，即归一化退火和冷却; 4）冷轧，即以75-92％的冷轧压下率进行单次冷轧; 5）在正常点为40-80℃的保护气氛中，在780-880℃下进行80-350秒的脱碳退火，其中脱碳薄片表面的总氧[0]为171 / t＆ ; [O]＆nlE; 313 / t（t表示钢板的实际厚度，单位为mm），吸附氮量：2-10ppm; 6）高温退火，其中保护气氛的露点为0-50℃，第一阶段的保温时间为6-30h，高温退火时吸收的氮量为10-40 ppm; 7）热水平退火。本发明可以通过控制热轧板的归一化过程来控制钢板的一次再结晶微观结构，从而在脱碳退火和低温保持低温退火过程中形成足够的（Al，Si）N夹杂物，，促进了最终产品的稳定，完美的二次再结晶微观结构的产生。此外，本发明避免了使用氨氮在现有技术中对下层的影响，因此有利于形成良好的玻璃膜下层。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式