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2B · 表面缺陷 · 冷轧 · 验收 · 缺陷

冷轧 2B 表面常见缺陷与判定(附英文对照)

2B 表面常见辊印、划伤、氧化色、酸洗不良、板形波浪等缺陷;验收要按标准与封样,区分可修与不可修。
冷轧 2B 表面是最常见的交货状态,验收时常见缺陷与判定:
| 缺陷 | 英文 | 常见原因 | 判定/处理 | |---|---|---|---| | 辊印 | roll mark | 轧辊表面损伤/异物 | 轻微可修磨,明显降级 | | 划伤 | scratch | 搬运/开平/分条接触 | 按深度与长度判定 | | 氧化色 | oxidation tint | 退火气氛不良 | 影响外观与耐蚀,严重判废 | | 酸洗不良 | poor pickling | 酸液/温度/时间不足 | 可返酸洗,严重降级 | | 板形波浪 | waviness | 轧制/平整/卷取张力 | 按不平度 mm/m 判定 | | 色差 | color difference | 钝化/清洗不均 | 外观件严控,结构件可让步 | | 麻点 | pitting | 腐蚀或压入 | 按深度与数量判定 |
验收建议:
1) 按标准(GB/T 3280、ASTM A240/A480、EN 10088-2)与封样判定; 2) 明确"允许缺陷"与"可修/不可修",避免全批退货; 3) 记录缺陷位置、尺寸、数量与照片; 4) 外观件与结构件可设不同验收等级。
2B 表面缺陷多与轧制、退火、酸洗、平整及物流环节相关,追溯工序比争论"谁的责任"更有效。
Compiled by SteelWe editors and industry experts. For industry exchange only; not trading or investment advice. Cite the source when quoting.
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