共查询到19条相似文献,搜索用时 93 毫秒
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介绍了攀钢生产汽车用热轧、冷轧钢板及优质型钢的开发现状、存在问题,并提出了攀钢汽车用钢的未来发展分三步走的战略思路。 相似文献
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介绍了国内外激光毛化冷轧辊的发展和应用情况,比较了喷丸、电火花和激光毛化钢板的表面形貌和使用性能,以及CO2和YAG激光毛化的工艺特点。结合攀钢冷轧厂的设备现状,探讨了攀钢冷轧辊激光毛化的可行性并提出了相关建议。 相似文献
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���� ����������ʥ�ң����� 《钢铁研究学报》2013,25(10):42-46
Effect of double cold rolling on magnetic properties and microstructure of 3.98%Si-0.71%Al non-oriented silicon Steel Sheets cast by twin-roll thin strip casting process were investigated. The results show that the structure of the thin strip is equiaxed crystal, the recrystallization is complete and normalizing has lesser effect on microstructure. Using both cold rolled and double cold rolled process, the microstructure is equiaxed grain after final annealing. The average grain size of annealed sheet in double cold rolled specimen was smaller than single stage cold rolled sheet. Double cold rolling process is helpful for iron loss and magnetic flux density. 相似文献
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《Baosteel Technical Research》2010,(Z1):52
The paper shows the main surface defects of cold rolling automobile sheet in BX Steel.The main surface defects are unusual defects.The typical familiar defects are sliver and punctuates that are on the rolling direction.The inclusions of steel-making and scales of hot rolling process are the main causes of defects.They are the biggest problems puzzle cold rolled automobile sheet surface quality,and are the burning issues of BX Steel.We classify and analysis the defects.We observe the panorama of surface defects using portable video microscopy apparatus,and clean the sample using ultrasonic shaker,analysis the defects pattern and chemical composition using scanning electron microscope.At present the primary defects that impacted cold rolled automobile sheet quality are dark sliver defects.We control the steel-making and hot rolling process aiming at the cause and position of defects making.We fine control the operating of steel ladle,gating,casting system and continuous casting machine in steelmaking process.The scale defect is reduced by controlling furnace,high pressure water descaling system and finish mill descaling in hot rolling process.Alone with the reforming and renewing of equipment,gathering producing experience,the cold rolled automobile sheet quality made in BX Steel is upgrading gradually. 相似文献
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通过实验室4辊轧机和保护气氛管式退火炉,对0.04C钢CSP工艺生产的3姗热轧板进行冷轧(至0.8mm)和退火试验,并用蚀坑法对退火试样进行织构分析;同时对包钢薄板厂CSP3mm热轧板冷轧的1.2姗板卷退火试样进行了X-射线检测。结果表明,1.2mm SPCC冷轧板退火织构表层有较弱的{111}织构组分,中心层没有发现有利于提高钢的深冲性能的{111}织构。1.2mm板卷退火试样{111}/{100}取向密度比为2.0~3.0,与实验室蚀坑法的试验结果一致。 相似文献
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超薄热轧带钢生产技术 总被引:4,自引:0,他引:4
综述了超薄热轧带钢的生产意义、生产技术难点、国内外市场需求及生产现状,并介绍了无头轧制、薄板坯连铸连轧和铁素区轧制等相关生产技术。结合攀钢1.5、1.8mm超薄热轧带钢生产现状提出了建议。 相似文献
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针对热轧酸洗板的生产工艺特点,以带材前张应力横向分布均匀和辊间接触压力分布均匀作为目标函数,建立了一套针对热轧酸洗板平整机辊型优化的数学模型,并将其应用到攀钢热轧酸洗板平整机组中,提高了热轧酸洗板的平整质量. 相似文献
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条状缺陷是IF钢冷轧板常见的表面缺陷之一,针对邯钢IF钢冷轧板表面出现的条状缺陷,分析了该类条状缺陷的成因,并提出了合理的控制措施。通过SEM-EDS分析发现条状缺陷内部存在大量的小尺寸Al_2O_3颗粒,分析其来源于铸坯中大型Al_2O_3夹杂物。对不同浇注阶段铸坯进行SLIME法大样电解并采用SEM-EDS分析其大型夹杂物类型,发现在交接坯和换水口坯中存在较多的大型Al_2O_3夹杂物,分析其来源为水口结瘤物。综合分析后得出此类条状缺陷成因是水口结瘤物脱落被卷入结晶器,并在铸坯中形成大型Al_2O_3夹杂物,进而在冷轧板轧制过程中形成表面条状缺陷。 相似文献