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板形 · 浪形 · 瓢曲 · 凸度 · 楔形 · 术语

板形术语:浪形、瓢曲、楔形、凸度与边浪怎么看

板形问题影响开平、分条与冲压。浪形/瓢曲/边浪属平整度,楔形/凸度属横断面厚度分布,验收要分开约定。
板形(flatness / shape)是不锈钢板带验收的高频争议点,先把术语分清:
1) 浪形(waviness):沿长度方向出现的波浪起伏,分边浪(edge wave)、中间浪(center buckle)、1/4 浪;通常用不平度(mm/m 或 I 单位)衡量。 2) 瓢曲(crossbow / lengthwise bow):横向或纵向整体弯曲,像"弓"一样。 3) 边浪:带钢两侧延伸不均造成,分条或开平后明显。 4) 楔形(wedge):横断面一侧厚一侧薄,厚度差沿宽度方向。 5) 凸度(crown):横断面中间厚、两边薄的程度,热轧/冷轧控制指标。 6) 镰刀弯(camber):带钢中心线偏离直线的弯曲。
验收建议:
• 平整度(浪形/瓢曲)按标准或合同约定(如 ≤10mm/m,或按 I 单位); • 横断面(楔形/凸度)约定测量位置与允许值; • 开平、分条、冲压用途要明确更严的板形要求,因为下游会放大缺陷; • 现场测量用塞尺、平台或专用板形仪,保留记录。
板形问题往往与轧制、矫平、冷却和卷取张力有关,来料验收与工艺参数要一起看。
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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