[1]任娟红,陈安忠*,潘吉祥,等.doi: 10.3969/j.issn.1001-3849.2025.06.003439铁素体不锈钢表面色差缺陷分析与控制[J].电镀与精饰,2025,(06):16-22.
　Ren Juanhong,Chen Anzhong*,Pan Jixiang,et al.Analysis and control of surface color difference defects of 439 ferrite stainless steel[J].Plating & Finishing,2025,(06):16-22.
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doi: 10.3969/j.issn.1001-3849.2025.06.003439铁素体不锈钢表面色差缺陷分析与控制()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年06
页码:
16-22
栏目:
出版日期:
2025-06-30

文章信息/Info

Title:
Analysis and control of surface color difference defects of 439 ferrite stainless steel
作者:
任娟红1; 陈安忠1*; 潘吉祥2; 李具仓1
(1. 酒钢集团钢铁研究院,甘肃 嘉峪关 735100 ;2. 酒钢集团不锈钢分公司,甘肃 嘉峪关 735100)
Author(s):
Ren Juanhong1;  Chen Anzhong1*;  Pan Jixiang2;  Li Jucang1
(1. Research Institute, JISCO, Jiayuguan 735100, China; 2. Stainless Steel Branch, JISCO, Jiayuguan 735100, China)
关键词:
439不锈钢; 色差缺陷; 显微组织; 微观形貌; EDS能谱
Keywords:
439 stainless steel;  color difference defects;  microstructure;  micromorphology;  EDS energy spectrum
分类号:
TG142.71
文献标志码:
A
摘要:
针对439超纯铁素体不锈钢冷退火酸洗过程中酸洗表面频繁出现的泛蓝和白条色差缺陷，通过直读光谱仪、材料拉伸试验机、光学显微镜、场发射扫描电镜、EDS能谱等对439表面进行表征和分析。结果表明：439表面出现泛蓝缺陷是由于冷退火酸洗过程中酸洗强度不足，未将冷退火过程中生成的氧化皮酸洗干净，表面残留有蓝色光泽的致密的铁铬氧化物，宏观显示为表面泛蓝；而白条色差缺陷是因为冷退火酸洗过程中酸洗强度过大，过酸洗导致基体表面沿轧制方向形成了细小、密集、蜂窝状的点蚀坑，漫反射后宏观呈现出白条色差缺陷。调整冷退火酸洗过程中酸洗工艺，HF浓度按10 g/L、HNO3浓度按110 g/L、混酸温度按44 ℃控制后，439表面色差缺陷得到了有效控制，冷退火酸洗后表面均匀，再没有出现泛蓝和白条色差缺陷。
Abstract:
In view of the defects of blue and white strip on the surface of 439 ferrite stainless steel, the surface of 439 was characterized and analyzed by direct reading spectrometer, material tensile testing machine, optical microscope, field emission scanning electron microscope and EDS spectrum. The results show that the pan-blue defect on the surface is due to the lack of pickling strength. The oxidized skin generated during cold annealing is not cleaned, and the dense iron chromium oxide with blue luster remains on the surface, which shows blueness on the macro level. However, the color difference defect of white strip is because the strength of pickling is too large. Over-pickling causes the metal matrix to form a small and dense honeycomb pit on the surface of the metal matrix along the direction of rolling. After diffuse reflection, the color difference defect of white stripe appears at the macro level. After adjusting the pickling process during cold annealing and pickling, the HF concentration is controlled by 10 g/L, the HNO 3 concentration is controlled by 110 g/L, and the acid mixing temperature is controlled by 44 ℃, the surface color difference defect of 439 is effectively controlled. After cold annealing pickling, the surface is uniform, and there is no blue and white color difference defect

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更新日期/Last Update: 2025-06-18